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Infusing High-density Polyethylene with Graphene-Zinc Oxide to Produce Antibacterial Nanocomposites with Improved Properties

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Chinese Journal of polymer Science 2020年第8期38卷 898-907,I0008页

作者： You-Li Yao Manuel Reves De Guzman Hong Duan Chen Gao Xu Lin Yi-Hua Wen Juan Du Li Lin Jui-Chin Chen Chin-San Wu Maw-Cherng Suen Ya-Li Sun Wei-Song Hung Chi-Hui Tsou Material Corrosion and Protection Key Laboratory of Sichuan Province Sichuan University of Science and EngineeringZigong 643000China Department of Orthopedics West China School of Medicine/West China HospitalSichuan UniversityChengdu 610041China Department of Orthopedics Fourth People's Hospital of ZigongZigong 643000China Department of Materials and Textiles Oriental Institute of TechnologyNew Taipei City 22061China Department of Applied Cosmetology Kao Yuan UniversityKaohsiung 82101China Department of Fashion Business Administration Lee-Ming Institute of TechnologyNew Taipei City 24305China Graduate institute of Applied Science and technology Department of Materials Science and EngineeringNational Taiwan University of Science and TechnologyTaipei 10607China R&D Center for Membrane technology Department of Chemical EngineeringChung Yuan UniversityChung-Li 32023China Sichuan Zhixiangyi technology Co. Ltd.Chengdu 610051China Department of Materials Science Chulalongkorn UniversityBangkok 10330Thailand

Nanocomposites of high-density polyethylene(HDPE)modified with 0.2 phr graphene-zinc oxide(GN-ZnO)exhibited optimal mechanical properties and thermal *** other nano-materials—GN and nano-ZnO—were also used to compare them with *** the content of GN-ZnO gradually enhanced the antibacterial and barrier properties,but the addition of 0.3 phr GN-ZnO led to agglomeration that caused defects in the ***,we investigated the antibacterial and barrier properties of HDPE nanocomposites infused with different nanoparticles(GN,ZnO,GN-ZnO)of varying *** and the nanoparticles were meltblended together in a Haake-Buchler Rheomixer to produce a new environment-friendly nano-material with improved physical and chemical *** following characterizations were conducted:tensile test,thermogravimetric analysis,morphology,differential scanning calorimetry,X-ray diffraction,antibacterial test,and oxygen and water vapor permeation *** results showed that the crystallinity of HDPE was affected with the addition of GN-ZnO,and the nanocomposites had effective antibacterial capacity,strong mechanical properties,high thermal stability,and excellent barrier *** type of HDPE nanocomposites reinforced with GN-ZnO would be attractive for packaging industries.

关键词： High-density polyethylene Zinc oxide Nanocomposite material Antibacterial properties Barrier performance

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Selective potassium uptake via biocompatible zeolite–polymer hybrid microbeads as promising binders for hyperkalemia

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Bioactive Materials 2021年第2期6卷 543-558页

作者： Zhoujun Wang Wei Sun Zhiwei Wei Jianxu Bao Xin Song Yupei Li Haifeng Ji Jue Zhang Chao He Baihai Su Weifeng Zhao Changsheng Zhao College of polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu610065China Laboratory Department of General Hospital of western Theatek Command Chengdu610000China Department of Nephrology West China HospitalSichuan UniversityChengdu610041China institute for Disaster Management and Reconstruction Sichuan UniversityChengdu610207China College of Chemical Engineering Sichuan UniversityChengdu610065China College of Biomedical Engineering Sichuan UniversityChengdu610064China

Patients with chronic kidney disease are at high risk of hyperkalemia that is associated with various lifethreatening *** primarily rely on orally administered potassium binding agents,along with low curative effects and various side ***,direct serum potassium uptake was realized via zeolite–heparin-mimicking-polymer hybrid *** preparation process involved the synthesis of the heparin-mimicking polymer via the in situ cross-linking polymerization of acrylic acid and N-vinylpyrrolidone in polyethersulfone solution,the fabrication of microbeads via zeolite-mixing,electro-spraying and phase-inversion,and the subsequent aqueous-phase modifications based on ion-exchange and *** ultra-high(about 88%)amount of zeolite could be incorporated and well locked inside the polymer *** uptake capability was verified in water,normal saline and human serum,showing high selectivity and fast *** microbeads exhibited satisfying blood compatibility,negligible hemolysis ratio,prolonged clotting time,inhibited contact activation,and enhanced antifouling property toward serum proteins and *** proposed approach toward zeolite–heparin-mimicking-polymer hybrid microbeads provided a cheap,efficient and safe treatment protocol of hyperkalemia for the high-risk patients.

关键词： Potassium uptake Competitive adsorption Microbead Zeolite Blood compatibility

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Dense Hydrogen-Bonding Network Boosts Ionic Conductive Hydrogels with Extremely High Toughness,Rapid Self-Recovery,and Autonomous Adhesion for Human-Motion Detection

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Research 2021年第1期2021卷 713-726页

作者： Bing Zhang Xu Zhang Kening Wan Jixin Zhu Jingsan Xu Chao Zhang Tianxi Liu State Key Laboratory for Modification of Chemical Fibers and polymer Materials College of Materials Science and EngineeringInnovation Center for Textile Science and TechnologyDonghua UniversityShanghai 201620China School of Engineering and Materials Science Queen Mary University of LondonMile End RoadLondon E14NSUK Shaanxi institute of Flexible Electronics(SIFE) Northwestern Polytechnical University(NPU)127 West Youyi RoadXi’an 710072China School of Chemistry Physics and Mechanical EngineeringQueensland University of TechnologyBrisbaneQLD 4001Australia Key Laboratory of Synthetic and Biological Colloids Ministry of EducationSchool of Chemical and Material EngineeringJiangnan UniversityWuxi 214122China

The construction of ionic conductive hydrogels with high transparency,excellent mechanical robustness,high toughness,and rapid self-recovery is highly desired yet ***,a hydrogen-bonding network densification strategy is presented for preparing a highly stretchable and transparent poly(ionic liquid)hydrogel(PAM-r-MVIC)from the perspective of random copolymerization of 1-methyl-3-(4-vinylbenzyl)imidazolium chloride and acrylamide in *** to the formation of a dense hydrogen-bonding network,the resultant PAM-r-MVIC exhibited an intrinsically high stretchability(>1000%)and compressibility(90%),fast self-recovery with high toughness(2950 kJ m^(-3)),and excellent fatigue resistance with no deviation for 100 *** particle dynamics simulations revealed that the orientation of hydrogen bonds along the stretching direction boosted mechanical strength and toughness,which were further proved by the restriction of molecular chain movements ascribing to the formation of a dense hydrogen-bonding network from mean square displacement *** with high ionic conductivity over a wide temperature range and autonomous adhesion on various surfaces with tailored adhesive strength,the PAM-r-MVIC can readily work as a highly stretchable and healable ionic conductor for a capacitive/resistive bimodal sensor with self-adhesion,high sensitivity,excellent linearity,and great *** study might provide a new path of designing and fabricating ionic conductive hydrogels with high mechanical elasticity,high toughness,and excellent fatigue resilience for skin-inspired ionic sensors in detecting complex human motions.

关键词： toughness fatigue bonding

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Rapid sterilisation and diabetic cutaneous regeneration using cascade bio-heterojunctions through glucose oxidase-primed therapy

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Bioactive Materials 2023年第7期25卷 748-765页

作者： Yi Deng Xumei Ouyang Jiyu Sun Xiuyuan Shi Yunfei Li Yau Kei Chan Weizhong Yang Shaojun Peng College of Biomedical Engineering School of Chemical EngineeringSichuan UniversityChengdu610065China State Key Laboratory of polymer Materials Engineering Sichuan UniversityChengdu610065China Zhuhai institute of Translational Medicine Zhuhai People’s Hospital(Zhuhai Hospital Affiliated with Jinan University)ZhuhaiGuangdong519000China State Key Laboratory of Oral Diseases National Clinical Research Center for Oral DiseasesWest China Hospital of StomatologySichuan UniversityChengdu610041China Department of Materials Imperial College LondonSW72AZLondonUnited Kingdom Department of Biomedical Engineering The City College of the City University of New YorkNew YorkUnited States Department of Mechanical Engineering The University of Hong KongHong KongChina Department of Ophthalmology The University of Hong KongHong KongChina

The cutaneous wound in diabetic patients frequently encounters intractable pathogenic infections due to the hyperglycemia micromilieu which is conducive to bacterial growth and *** the extensive clinical use of antibiotics to treat bacterial infections,the emergence of drug-resistant and super pathogens as well as the potential side effects of antibiotics have elicited alarming challenges to public *** address this daunting concern,we devise and develop a photo-activated cascade bio-heterojunctions(C-bio-HJs)for rapid sterilization and diabetic cutaneous *** the designed C-bio-HJs,photo-generated electron-hole pairs of graphite-phase carbon nitride(g-C_(3)N_(4))are effectively separated with the marriage of molybdenum disulfide(MoS_(2)),which achieves the augmented photodynamic antibacterial ***,glucose oxidase(GOx)tethered on the bio-HJs catalyzes glucose into hydrogen peroxide(H_(2)O_(2))in diabetic wounds for starvation ***,Mo4+enables the catalysis of H_(2)O_(2)into a highly effective hydroxyl radical(⋅OH)for chemodynamic-photothermal combined antibacterial *** in vitro and in vivo results authenticate the cascading antibacterial properties and skin regeneration-promoting effects of the C-bio-HJs,which provide a facile strategy to combat diabetic wound healing through the synergistic GOx-primed dynamic therapies.

关键词： Antibacterial therapy Bio-heterojunction g-C_(3)N_(4) Rapid sterilization Tissue regeneration

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Control of the interparticle spacing in superparamagnetic iron oxide nanoparticle clusters by surface ligand engineering

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Chinese Physics B 2016年第7期25卷 427-434页

作者：王丹林兵兵申太鹏吴君豪富华夏春潮龚启勇唐惠儒宋彬艾华 National Engineering Research Center for Biomaterials Sichuan University Wuhan institute of Physics and Mathematics Chinese Academy of Sciences Department of Radiology West China Hospital Sichuan University

polymer-mediated self-assembly of superparamagnetic iron oxide（SPIO） nanoparticles allows modulation of the structure of SPIO nanocrystal cluster and their magnetic properties. In this study, dopamine-functionalized polyesters（DApolyester） were used to directly control the magnetic nanoparticle spacing and its effect on magnetic resonance relaxation properties of these clusters was investigated. Monodisperse SPIO nanocrystals with different surface coating materials（poly（ε-caprolactone）, poly（lactic acid）） of different molecular weights containing dopamine（DA） structure（DA-PCL2k,DA-PCL1k, DA-PLA1k）） were prepared via ligand exchange reaction, and these nanocrystals were encapsulated inside amphiphilic polymer micelles to modulate the SPIO nanocrystal interparticle spacing. Small-angle x-ray scattering（SAXS）was applied to quantify the interparticle spacing of SPIO clusters. The results demonstrated that the tailored magnetic nanoparticle clusters featured controllable interparticle spacing providing directly by the different surface coating of SPIO nanocrystals. Systematic modulation of SPIO nanocrystal interparticle spacing can regulate the saturation magnetization（Ms） and T2 relaxation of the aggregation, and lead to increased magnetic resonance（MR） relaxation properties with decreased interparticle spacing.

关键词： nanoparticle clusters interparticle spacing ligand exchange magnetization

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Advancing collagen-based biomaterials for oral and craniofacial tissue regeneration

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Collagen and Leather 2023年第2期5卷 1-20页

作者： Bo Zhang Yunxiang He Jialing Liu Jiaojiao Shang Chider Chen Tianyi Wang Mei Chen Yifei Li Guidong Gong Jie Fang Zhihe Zhao Junling Guo State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases West China Hospital of StomatologySichuan UniversityChengdu 610041SichuanChina BMI Center for Biomass Materials and Nanointerfaces College of Biomass Science and EngineeringSichuan UniversityChengdu 610065SichuanChina Department of Oral and Maxil-lofacial Surgery and Pharmacology School of Dental MedicineUniversity of PennsylvaniaPhiladelphiaPA 19104USA Center of Innovation and Precision Dentistry School of Dental MedicineSchool of Engineering and Applied SciencesUniversity of PennsylvaniaPhiladelphiaPA 19104USA Key Laboratory of Birth Defects and Related Diseases of Women and Children of Ministry of Education(MOE) Department of PediatricsWest China Second University HospitalSichuan UniversityChengdu 640041SichuanChina Department of Chemical and Biological Engineering Bioproducts InstituteUniversity of British ColumbiaVancouverBC V6T 1Z4Canada Key Laboratory of polymer Materials Engineering Sichuan UniversityChengdu 610065SichuanChina

The oral and craniofacial region consists of various types of hard and soft tissues with the intricate *** the high prevalence of tissue defects in this specific region,it is highly desirable to enhance tissue regeneration through the development and use of engineered ***,the major component of tissue extracellular matrix,has come into the limelight in regenerative *** collagen has been widely used as an essential component in biomaterial engineering owing to its low immunogenicity,high biocompatibility,and convenient extraction procedures,there is a limited number of reviews on this specific clinic *** need for mechanical enhancement and functional engineering drives intensive efforts in collagen-based biomaterials concentrating on therapeutical outcomes and clinical translation in oral and craniofacial tissue ***,we highlighted the status quo of the design and applications of collagen-based biomaterials in oral and craniofacial tissue *** discussion expanded on the inspiration from the leather tanning process on modifications of collagen-based biomaterials and the prospects of multi-tissue reconstruction in this particular dynamic *** existing findings will lay a new foundation for the optimization of current collagen-based biomaterials for rebuilding oral and craniofacial tissues in the future.

关键词： Collagen-based biomaterial Oral tissues Craniofacial tissues Tissue engineering Leather tanning process

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CNT Based and Graphene Based polymer Nanocomposites for Radar Absorbing Applications

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材料科学与工程（中英文B版） 2012年第6期2卷 368-375页

作者： Chapal Kumar Das Chakkirala Venkata Sudhakar Materials Science Centre Indian Institute of Technology Kharagpur West Bengal 721302 India

In the ongoing search for newer materials for investigating the microwave absorption, carbon nanotubes and graphene merit a special consideration which gives their outstanding properties. While on one hand, the mechanically strong and electrically conductive properties of CNTs grab the attention for developing conductive polymer composites for microwave absorption, on the other hand, graphene is not left any far behind in this application owing to its outstanding mechanical, thermal and electrical properties. In this work, four different samples have been prepared with two of them using CNT as a filler while the other two utilizing dispersed graphene in Thermoplastic polyurethane (TPU) matrix. Barium hexaferrite (BaFe12O19) which exhibits both magnetic and dielectric properties has been added as an additional filler in two of those samples. The microwave absorbing characteristics have been investigated in X band region (8-12 GHz) on a Vector Network Analyzer, morphology and structure were studied through XRD, SEM and FESEM, and elemental composition was confirmed by EDX. It has been observed that a reflection loss of -16.3 dB has been obtained by CNT/Fe3O4/TPU system and -9.7 dB has been obtained by graphene/Fe3O4/TPU system, while CNT/Fe3O4/BaHF/TPU system achieved a reflection loss of -18.9 dB and graphene/ Fe3O4/BaHF/TPU system achieved -13.3 dB.

关键词：聚合物纳米复合材料 CNT 石墨微波吸收特性高分子复合材料矢量网络分析仪 FESEM 应用

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Surface modification of YS-20 with polydopamine for improving the tribological properties of polyimide composites

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Friction 2022年第3期10卷 411-421页

作者： Liangfei WU Zhaozhu ZHANG Mingming YANG Junya YUAN Peilong LI Zujun CHEN Xuehu MEN State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China School of Physical Science and technology Lanzhou UniversityLanzhou 730000China

Recently,great effort has been devoted to prepare various reinforce fillers to improve polymer performances,but ignoring the importance of raw polymer powders which are indispensable parts of hot-pressed polymer ***,we engineer raw polyimide(PI)powders with the assistance of polydopamine(PDA)in aqueous *** the modification,polymer powders change from hydrophobic to hydrophilic,which makes it is possible to further modification of polymer powders in liquid *** the curing process of modified polymer powders,the partial dehydration of the catechol groups and crosslinking of PDA via C–O–C bonds are *** on the features of PDA,a non-destructive mixing method is utilized to realize homogeneous dispersion of multi-walled carbon nanotubes(MWCNTs)in polymer *** comparison with ball milling method,this way can preserve the integrated innate structure of MWCNTs ***,by taking full advantage of the reducing and metal-coordination capability of PDA,Cu2+is successfully loaded onto the surfaces of polymer *** related characterizations demonstrate that Cu2+in situ converts to metallic copper rather than copper oxide during the hot pressing *** tribological properties of corresponding polymer composites are also *** results indicate that modifying polymer powders with PDA is multi-profit and presents practical application prospect.

关键词： polydopamine(PDA) carbon nanotube metallic copper wear resistance

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Genome-wide analysis identify novel germline genetic variations in ADCY1 influencing platinum-based chemotherapy response in nonsmall cell lung cancer

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Acta Pharmaceutica Sinica B 2022年第3期12卷 1514-1522页

作者： Chenxue Mao Juan Chen Ting Zou Yuankang Zhou Junyan Liu Xi Li Xiangping Li Min Li Pinhua Pan Wei Zhuo Yang Gao Shuo Hu Desheng Xiao Lin Wu Zhan Wang Heng Xu Wen Yang Yingjie Xu Haihua Xiao Kazuhiko Hanada Wei Zhang Honghao Zhou Jiye Yin Zhaoqian Liu Departments of Clinical Pharmacology and Pharmacy Hunan Key Laboratory of Pharmacogeneticsand National Clinical Research Center for Geriatric DisordersXiangya HospitalCentral South UniversityChangsha 410008China institute of Clinical Pharmacology Engineering Research Center of Applied Technology of PharmacogenomicsMinistry of EducationCentral South UniversityChangsha 410078China Department of Respiratory Xiangya HospitalCentral South UniversityChangsha 410008China Department of Thoracic Surgery Xiangya HospitalCentral South UniversityChangsha 410008China Department of Nuclear Medicine Xiangya HospitalCentral South UniversityChangsha 410008China Department of Pathology Xiangya HospitalCentral South UniversityChangsha 410014China Department of Thoracic Medicine Hunan Cancer HospitalChangsha 410014China Department of Medical Oncology Lung Cancer and Gastrointestinal UnitHunan Cancer HospitalChengdu 610000China State Key Laboratory of Biotherapy and Cancer Center West China HospitalSichuan University and Collaborative Innovation Center of BiotherapyChengdu 610000China Department of Molecular and Cellular Biochemistry School of MedicineShanghai Jiaotong UniversityShanghai 200025China Beijing National Laboratory for Molecular Sciences State Key Laboratory of Polymer Physics and ChemistryInstitute of ChemistryChinese Academy of SciencesBeijing 100190China Department of Pharmacometrics and Pharmacokinetics Meiji Pharmaceutical University Tokyo 204-8588Japan

To explore the pharmacogenomic markers that affect the platinum-based chemotherapy response in non-small-cell lung carcinoma(NSCLC),we performed a two-cohort of genome-wide association studies(GWAS),including 34 for WES-based and 433 for microarray-based analyses,as well as two independent validation *** integrating the results of two studies,the genetic variations related to the platinum-based chemotherapy response were further determined by fine-mapping in 838 samples,and their potential functional impact were investigated by eQTL analysis and in vitro cell *** found that a total of 68 variations were significant at P<1×10^(-3)in cohort 1 discovery stage,of which 3 SNPs were verified in 262 independent samples.A total of541 SNPs were significant at P<1×10^(-4)in cohort 2 discovery stage,of which 8 SNPs were verified in 347 independent *** the validated SNPs in two GWAS,ADCY1 gene was verified in both independent *** results of fine-mapping showed that the G allele carriers of ADCY1rs2280496 and C allele carriers of rs189178649 were more likely to be resistant to platinum-based *** conclusion,our study found that rs2280496 and rs189178649 in ADCY1 gene were associated the sensitivity of platinum-based chemotherapy in NSCLC patients.

关键词： Pharmacogenomics NSCLC Platinum GWAS WES ADCY1 Precious medicine SNPs

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A pH-sensitive supramolecular nanosystem with chlorin e6 and triptolide co-delivery for chemo-photodynamic combination therapy

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Asian Journal of Pharmaceutical Sciences 2022年第2期17卷 206-218页

作者： Yihan Wu Jingjing Li Xuemei Zhong Jinfeng Shi Yanfen Cheng Chenglin He Jiaxin Li Liang Zou Chaomei Fu Meiwan Chen Jinming Zhang Huile Gao School of Pharmacy Chengdu University of Traditional Chinese MedicineChengdu 611137China Department of Pharmacology and Pharmacy The University of Hong KongHong Kong SARChina School of Food and Biological Engineering Chengdu UniversityChengdu 610106China institute of Chinese Medical Sciences University of MacaoMacaoChina west China School of Pharmacy Sichuan UniversityChengdu 610041China

The combination of Ce6,an acknowledged photosensitizer,and TPL,a natural anticancer agent,has been demonstrated as a useful strategy to reinforce the tumor growth suppression,as well as decrease the systemic side effects compared with their ***,in view of the optimal chemo-photodynamic combination efficiency,there is still short of the feasible nanovehicle to steadily co-deliver Ce6 and TPL,and stimuli-responsively burst release drugs in tumor ***,we described the synergistic antitumor performance of a pH-sensitive supramolecular nanosystem,mediated by the host–guest complexing betweenβ-CD and acid pH-responsive amphiphilic co-polymer mPEG-PBAE-mPEG,showing the shell–core structural micelles with the tightβ-CD layer *** Ce6 and TPLwere facilely co-loaded into the spherical supramolecular NPs(TPL+Ce6/NPs)by one-step nanoprecipitation method,with an ideal particle size(156.0 nm),acid pH-responsive drug release profile,and enhanced cellular internalization *** view of the combination benefit of photodynamic therapy and chemotherapy,as well as co-encapsulation in the fabricated pH-sensitive supramolecular NPs,TPL+Ce6/NPs exhibited significant efficacy to suppress cellular proliferation,boost ROS level,lower MMP,and promote cellular apoptosis in ***,fluorescence imaging revealed that TPL+Ce6/NPs preferentially accumulated in the tumor tissue area,with higher intensity than that of free *** expected,upon 650-nm laser irradiation,TPL+Ce6/NPs exhibited a cascade of amplified synergistic chemo-photodynamic therapeutic benefits to suppress tumor progression in both hepatoma H22 tumor-bearingmice and B16 *** importantly,lower systemic toxicitywas found in the tumor-bearingmice treated with TPL+Ce6/***,the designed supramolecular TPL+Ce6/NPs provided a promising alternative approach for chemo-photodynamic therapy in tumor treatment.

关键词： Triptolide Chemo-photodynamic pH-sensitive supramolecular Nanosystem Co-delivery

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