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Engineering Self-Healing adhesive hydrogels with antioxidant properties for intrauterine adhesion prevention

Bioactive Materials 2023年第9期27卷 82-97页

作者： Luyao Feng Liqun Wang Yao Ma Wanglin Duan Sergio Martin-Saldana Ye Zhu Xianpeng Zhang Bin Zhu Chaowei Li Shibo Hu Mingjie Bao Ting Wang Yuan Zhu Fei Yang Yazhong Bu Institute of Medical Engineering Department of BiophysicsSchool of Basic Medical SciencesHealth Science CenterXi’an Jiaotong UniversityXi’an710061China Department of Reproductive Health Jiangxi Maternal and Child Health HospitalNanchangJiangxi330006China POLYMAT Applied Chemistry DepartmentFaculty of ChemistryUniversity of the Basque Country UPV/EHUPaseo Manuel de Lardizabal 320018Donostia-San SebastianSpain JXHC Key Laboratory of Fertility Preservation Jiangxi Maternal and Child Health HospitalNanchangJiangxi330006China School of Chemical Sciences University of Chinese Academy of SciencesBeijing100049China Beijing National Laboratory for Molecular Sciences State Key Laboratory of Polymer Physics&ChemistryInstitute of ChemistryChinese Academy of SciencesBeijing100190China

Intrauterine adhesion (IUA) is the fibrosis within the uterine cavity. It is the second most common cause of female infertility, significantly affecting women’s physical and mental health. Current treatment strategies fail to provide a satisfactory therapeutic outcome for IUA patients, leaving an enormous challenge for reproductive science. A Self-Healing adhesive hydrogel with antioxidant properties will be highly helpful in IUA prevention. In this work, we prepare a series of Self-Healing hydrogels (P10G15, P10G20, and P10G25) with antioxidant and adhesive properties. Those hydrogels exhibit good Self-Healing properties and can adapt themselves to different structures. They possess good injectability and fit the shape of the human uterus. Moreover, the hydrogels exhibit good tissue adhesiveness, which is desirable for stable retention and therapeutic efficacy. The in vitro experiments using P10G20 show that the adhesive effectively scavenges ABTS+, DPPH, and hydroxyl radicals, rescuing cells from oxidative stress. In addition, P10G20 offers good hemocompatibility and in vitro and in vivo biocompatibility. Furthermore, P10G20 lowers down the in vivo oxidative stress and prevents IUA with less fibrotic tissue and better endometrial regeneration in the animal model. It can effectively downregulate fibrosis-related transforming growth factor beta 1 (TGF-β1) and vascular endothelial growth factor (VEGF). Altogether, these adhesives may be a good alternative for the clinical treatment of intrauterine adhesion.

关键词： Adhesive Hydrogel Intrauterine adhesion Self-Healing Antioxidant

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Microbial-inspired Self-Healing of concrete cracks by sodium silicate-coated recycled concrete aggregates served as bacterial carrier

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Frontiers of Structural and Civil Engineering 2024年第1期18卷 14-29页

作者： Jing XU Xianzhi WANG Wu YAO Anna A.KULMINSKAYA Surendra P.SHAH Key Laboratory of Advanced Civil Engineering Materials(Ministry of Education) School of Materials Science and EngineeringTongji UniversityShanghai 201804China Petersburg Nuclear Physics Institute Named by B.P.Konstantinov of National Research Centre Kurchatov InstituteGatchina 188300Russia Center for Advanced Construction Materials University of Texas at ArlingtonArlingtonTX 76019USA

Microbially induced carbonate precipitation(MICP)is a promising technique for the autonomous healing of concrete cracks.In this study,the effect of pH on MICP was investigated.The results indicate that the MICP process was inhibited when the pH was higher than 11.Both vaterite and calcite were produced when the pH was8.Recycled concrete aggregates(RCA)coated with sodium silicate have been proposed as protective carriers for microbial healing agents.Although the presence of the coated RCA resulted in a loss of the splitting tension strength of the concrete,the loaded healing agents were highly efficient in Self-Healing cracks.Concrete incorporated with 20%RCA loaded with healing agents exhibited the best Self-Healing performance.When the initial crack widths were between 0.3 and 0.4 mm,the 7-d mean healing rate was approximately 90%.At 28 d,the crack area filling ratio was 86.4%,while its water tightness recovery ratio was 74.4%and 29.8%,respectively,for rapid and slow absorption.This study suggests that RCA coated with sodium silicate is an effective method for packaging microbial healing agents and has great potential for developing cost-effective Self-Healing concrete.

关键词： Self-Healing microbial-induced carbonate precipitation water uptake recycled concrete aggregate protective carrier

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Self-Healing,self-Adhesive and Stable Organohydrogel-Based Stretchable Oxygen Sensor with High Performance at Room Temperature

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Nano-Micro Letters 2022年第3期14卷 257-275页

作者： Yuning Liang Zixuan Wu Yaoming Wei Qiongling Ding Meital Zilberman Kai Tao Xi Xie Jin Wu State Key Laboratory of Optoelectronic Materials and Technologies and the Guangdong Province Key Laboratory of Display Material and Technology School of Electronics and Information TechnologySun Yat-Sen UniversityGuangzhou 510275People’s Republic of China Department of Biomedical Engineering Faculty of EngineeringTel Aviv University69978 Tel AvivIsrael Ministry of Education Key Laboratory of Micro and Nano Systems for Aerospace Northwestern Polytechnical UniversityXi’an 710072People’s Republic of China

With the advent of the 5G era and the rise of the Internet of Things,various sensors have received unprecedented attention,especially wearable and stretchable sensors in the healthcare field.Here,a stretchable,self-healable,self-adhesive,and room-temperature oxygen sensor with excellent repeatability,a full concentration detection range(0-100%),low theoretical limit of detection(5.7 ppm),high sensitivity(0.2%/ppm),good linearity,excellent temperature,and humidity tolerances is fabricated by using polyacrylamide-chitosan(PAM-CS)double network(DN)organohydrogel as a novel transducing material.The PAM-CS DN organohydrogel is transformed from the PAM-CS composite hydrogel using a facile soaking and solvent replacement strategy.Compared with the pristine hydrogel,the DN organohydrogel displays greatly enhanced mechanical strength,moisture retention,freezing resistance,and sensitivity to oxygen.Notably,applying the tensile strain improves both the sensitivity and response speed of the organohydrogel-based oxygen sensor.Furthermore,the response to the same concentration of oxygen before and after Self-Healing is basically the same.Importantly,we propose an electrochemical reaction mechanism to explain the positive current shift of the oxygen sensor and corroborate this sensing mechanism through rationally designed experiments.The organohydrogel oxygen sensor is used to monitor human respiration in real-time,verifying the feasibility of its practical application.This work provides ideas for fabricating more stretchable,self-healable,self-adhesive,and high-performance gas sensors using ion-conducting organohydrogels.

关键词： Stretchable oxygen sensors Organohydrogel Self-Healing self-adhesive Electrochemical reaction

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Achieving anti-corrosion and anti-biofouling dual-function Self-Healing coating by natural carrier attapulgite loading with 2-Undecylimidazoline

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Journal of Materials Science & Technology 2023年第17期148卷 222-234页

作者： Yinghao Wu Jinming Wei Xiaolu Shi Wenjie Zhao Key Laboratory of Marine Materials and Related Technologies Zhejiang Key Laboratory of Marine Materials and Protective TechnologiesNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China Ningbo New Material Testing and Evaluation Center Co. LtdNingbo 315048China

In the marine environment,the protective coatings face serious corrosion and biofouling problem,lim-itations,and challenges that made Self-Healing coatings unable to perform both anti-corrosion and anti-biofouling dual-function at the same time.Here we constructed the corrosion resistance and anti-biofouling Self-Healing coating by integrating nano-containers into the coating matrix,the 2-Undecylimidazoline(ULM)acted as a corrosion inhibitor and anti-biofouling dual-functional agent which was loaded on the natural container attapulgite(ATP).To obtain high healing efficiency,a fluidity-driven Self-Healing silicone oil coating was thickened by fibrous ATP to enhance its stability,which played a key role in the Self-Healing and long-term corrosion resistance.The Self-Healing time of ULM@ATP rein-forced oil coating was 4 s at least in the air and up to 30 s in the 1 M HCl solution.Meanwhile,the ULM@ATP can significantly enhance the corrosion resistance of the Self-Healing coating,with the best effect achieved when the content of ULM@ATP was 5 wt.%.The impedance modulus of ULM@ATP-2 still reached 1.62×10^(8)Ωcm^(2) after 480 immersion in 3.5 wt.%NaCl solution,which is 3 orders of magnitude high than pure Oil coating(2.17×10^(5)Ωcm^(2)).The restructure of the ATP network and the release of ULM could largely inhibit the corrosion of metal.The continuous open circuit potential of the compos-ite coating performed the potentially infinite Self-Healing capacity.The Self-Healing performances of the composite coating in strong acid and base solutions exhibited high environmental suitability.This anti-corrosion and anti-biofouling(the surface coverage of adhered chlorella decreased 96.88%)dual-function strategy of Self-Healing coatings could be also realized by many other porous nano-materials or function modifications.The Self-Healing performances of the composite coating in strong acid and base solutions exhibited high environmental suitability.This anti-corrosion and anti-biofouling dual-function strategy of Self-Healing co

关键词： Self-Healing Active corrosion resistance Anti-biofouling Attapulgite

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Self-Healing polyamide reverse osmosis membranes with temperature-responsive intelligent nanocontainers for chlorine resistance

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化学科学与工程前沿:英文版 2023年第9期17卷 1183-1195页

作者： Qian Yang Lin Zhang Xiao Xie Qiong Sun Jianguang Feng Hongzhou Dong Na Song Liyan Yu Lifeng Dong College of Materials Science and Engineering Qingdao University of Science and TechnologyQingdao266042China Qingdao University of Science&Technology Analytical&Testing Center Qingdao266042China Department of Physics Hamline UniversitySt.Paul55104USA

Improving the performance of reverse osmosis membranes remains great challenge to ensure excellent NaCl rejection while maintaining high water permeability and chlorine resistance. Herein, temperature-responsive intelligent nanocontainers are designed and constructed to improve water permeability and chlorine resistance of polyamide membranes. The nanocontainer is synthesized by layer-by-layer self-assembly with silver nanoparticles as the core, sodium alginate and chitosan as the repair materials, and polyvinyl alcohol as the shell. When the polyamide layer is damaged by chlorine attack, the polyvinyl alcohol shell layer dissolves under temperature stimulation of 37 ℃, releasing inner sodium alginate and chitosan to repair broken amide bonds. The polyvinyl alcohol shell responds to temperature in line with actual operating environment, which can effectively synchronize the chlorination of membranes with temperature response and release inner materials to achieve Self-Healing properties. With adding temperature-responsive intelligent nanocontainers, the NaCl rejection of thin film composite membrane decreased by 15.64%, while that of thin film nanocomposite membrane decreased by only 8.35% after 9 chlorination cycles. Effective repair treatment and outstanding chlorine resistance as well as satisfactory stability suggest that temperature-responsive intelligent nanocontainer has great potential as membrane-doping material for the targeted repair of polyamide reverse osmosis membranes.

关键词： reverse osmosis nanocontainer Self-Healing chlorine resistance water permeability

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Antibacterial conductive Self-Healing hydrogel wound dressing with dual dynamic bonds promotes infected wound healing

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Bioactive Materials 2023年第12期30卷 129-141页

作者： Lipeng Qiao Yongping Liang Jueying Chen Ying Huang Saeed A.Alsareii Abdulrahman Manaa Alamri Farid A.Harraz Baolin Guo Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research College of StomatologyXi’an Jiaotong UniversityXi’an710049China Frontier Institute of Science and Technology State Key Laboratory for Mechanical Behavior of MaterialsXi’an Jiaotong UniversityXi’an710049China Department of Surgery College of MedicineNajran UniversityNajran11001Saudi Arabia Promising Centre for Sensors and Electronic Devices(PCSED) Advanced Materials and Nano-Research CentreNajran UniversityNajran11001Saudi Arabia Department of Orthopaedics The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an710061China

In clinical applications,there is a lack of wound dressings that combine efficient resistance to drug-resistant bacteria with good Self-Healing properties.In this study,a series of adhesive Self-Healing conductive antibacterial hydrogel dressings based on oxidized sodium alginate-grafted dopamine/carboxymethyl chitosan/Fe3+(OSD/CMC/Fe hydrogel)/polydopamine-encapsulated poly(thiophene-3-acetic acid)(OSD/CMC/Fe/PA hydrogel)were prepared for the repair of infected wound.The Schiff base and Fe3+coordination bonds of the hydrogel structure are dynamic bonds that can be repaired automatically after the hydrogel network is disrupted.Macroscopically,the hydrogel exhibits Self-Healing properties,allowing the hydrogel dressing to adapt to complex wound surfaces.The OSD/CMC/Fe/PA hydrogel showed good conductivity and photothermal antibacterial properties under near-infrared(NIR)light irradiation.In addition,the hydrogels exhibit tunable rheological properties,suitable mechanical properties,antioxidant properties,tissue adhesion properties and hemostatic properties.Furthermore,all hydrogel dressings improved wound healing in the infected full-thickness defect skin wound repair test in mice.The wound size repaired by OSD/CMC/Fe/PA3 hydrogel+NIR was much smaller(12%)than the control group treated with Tegaderm™film after 14 days.In conclusion,the hydrogels have high antibacterial efficiency,suitable conductivity,great Self-Healing properties,good biocompatibility,hemostasis and antioxidant properties,making them promising candidates for wound healing dressings for the treatment of infected skin wounds.

关键词： Dynamic crosslinking Self-Healing Infected wound Photothermal antibacterial Wound healing

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Natural biopolymers derived hydrogels with injectable,Self-Healing,and tissue adhesive abilities for wound healing

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Nano Research 2023年第2期16卷 2798-2807页

作者： Bin Kong Rui Liu Yi Cheng Xiaodong Cai Junying Liu Dagan Zhang Hui Tan Yuanjin Zhao Department of Rheumatology and Immunology The Affiliated Drum Tower Hospital of Nanjing University Medical SchoolNanjing 210002China Respiratory department Shenzhen Children's HospitalShenzhen 518038China Oujiang Laboratory(Zhejiang Lab for Regenerative Medicine Vision and Brain Health)Wenzhou InstituteUniversity of Chinese Academy of SciencesWenzhou 325001China

Developing a biocompatible and multifunctional adhesive hydrogel with injectability and Self-Healing ability for promoting wound healing is highly anticipated in various clinical applications.In this paper,we present a novel natural biopolymer-derived hydrogel based on the aldehyde-modified oxidized guar gum(OGG)and the carboxymethyl chitosan(CMCS)for efficiently improving wound healing with the encapsulation of vascular endothelial growth factor(VEGF).As the hydrogels are synthesized via the dynamically reversible Schiff base linkages,it is imparted with excellent Self-Healing ability and good shear thinning behavior,which make the hydrogel be easily and conveniently injected through a needle.Besides,the physiochemical properties,including porous structure,mechanical strength and swelling ratio of the hydrogel can be well controlled by regulating the concentrations of the OGG.Moreover,the hydrogel can attain strong adhesion to the tissues at physiological temperature based on the Schiff base between the aldehyde group on the hydrogel and the amino group on the tissue.Based on these features,we have demonstrated that the VEGF encapsulated hydrogel can adhere tightly to the defect tissue and improve wound repair in the rat model of defected skin by promoting cell proliferation,angiogenesis,and collagen secretion.These results indicate that the multifunctional hydrogel is with great scientific significance and broad clinical application prospects.

关键词： hydrogel Self-Healing injectability tissue adhesive wound healing

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A Self-Healing and conductive ionic hydrogel based on polysaccharides for flexible sensors

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Chinese Journal of Chemical Engineering 2023年第1期53卷 73-82页

作者： Yufei Wang Zihao Chen Rui Chen Jie Wei Beijing Engineering Research Center for the Synthesis and Applications of Waterborne Polymers Beijing 100029China Key Laboratory of Carbon Fibers and Functional Polymers Ministry of EducationBeijing 100029China College of Materials Science and Engineering Beijing University of Chemical TechnologyBeijing 100029China

In this study,we proposed a Self-Healing conductive hydrogel based on polysaccharides and Li+to serve as flexible sensors.At first,the oxidized sodium alginate(OSA)was obtained through the oxidation reaction of sodium alginate(SA).Then OSA,carboxymethyl chitosan(CMC),and agarose(AGO)were dissolved in LiCl solution,respectively.Finally,the hydrogel was obtained through heating,mixing,and cooling processes.Because of the Schiff base structure and hydrogen bonding,the hydrogel demonstrates good mechanical and Self-Healing properties.The presence of Li+provides good conductivity for the hydrogel.In addition,we demonstrated the application of the hydrogel as the flexible sensors.It can perceive the process of pressing Morse code with the index finger as a pressure sensor and monitor sliding movement of the thumb as the strain sensor to browse the web with the mobile phone.Thus,the selfhealing conductive hydrogel may have potential applications in flexible wearable sensors.

关键词： Hydrogel Self-Healing Conductivity Polysaccharide Flexible sensor

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Rapid Self-Healing,self-adhesive,anti-freezing,moisturizing,antibacterial and multi-stimuli-responsive PVA/starch/tea polyphenol-based composite conductive organohydrogel as flexible strain sensor

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Journal of Materials Science & Technology 2023年第4期135卷 199-212页

作者： Tao Ke Li Zhao Xin Fan Haibin Gu Key Laboratory of Leather Chemistry and Engineering of Ministry of Education Sichuan UniversityChengdu 610065China National Engineering Research Center of Clean Technology in Leather Industry Sichuan UniversityChengdu 610065China

The complexity of application environment stimulates the development of wearable devices based on functional hydrogels.Among all the promising performances,Self-Healing and self-adhesion properties are ideal for hydrogel sensors,which can guarantee good accuracy,comfort and long service life.However,it is still a challenge to achieve simultaneous Self-Healing and self-adhesion in different environments(in the air,underwater and at low temperatures).Herein,a feasible new strategy was successfully carried out to prepare a starch-based composite conductive organohydrogel based on the reversible borate ester bonds formed by complexing starch/polyvinyl alcohol(PVA)/tea polyphenol(TP)with borax,and multiple hydrogen-bond interactions among PVA,starch,TP and ethylene glycol(EG).Silver nanoparticles(Ag-NPs),reduced and stabilized by TP,and MWCNTs(multi-walled carbon nanotubes)were introduced into the cross-linking networks to endow the resulting PBSTCE organohydrogel with considerable antibacterial property and conductivity,respectively.The organohydrogel possessed rapid Self-Healing(HE(Self-Healing efficiency)=96.07%in 90 s,both in the air and underwater,also at-20℃),considerable self-adhesion(both in the air and underwater,also at-20℃),remarkable stretchability(814%of elongation),anti-freezing(-20℃)and moisture-retention abilities,antibacterial activity,sensitive pH/sugar-responsiveness,and plasticity.The strain sensor formed by the PBSTCE organohydrogel can not only effectively record large-scale human motions(e.***.finger/wrist/elbow bending,walking,etc.),but also accurately capture subtle motion changes(e.***.breathing,chewing,swallowing,speaking,smiling and frowning).Moreover,the self-healed organohydrogel sensor also exhibited almost invariable mechanical,electrical and sensing behaviors.This work demonstrates a feasible strategy to construct multifunctional starch-based organohy-drogels,and promotes their efficient,stable and eco-friendly application as flexible wearable devices.

关键词： Conductive organohydrogel Strain sensor Self-Healing self-adhesive Anti-freezing Antibacterial

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Decentralized Bilateral Risk-based Self-Healing Strategy for Power Distribution Network with Potentials from Central Energy Stations

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Journal of Modern Power Systems and Clean Energy 2023年第1期11卷 179-190页

作者： Chaoxian Lv Rui Liang Yuanyuan Chai School of Electrical Engineering China University of Mining and TechnologyXuzhouChina School of Electrical Engineering Hebei University of TechnologyTianjinChina

Owing to potential regulation capacities from flexible resources in energy coupling,storage,and consumption links,central energy stations(CESs)can provide additional support to power distribution network(PDN)in case of power disruption.However,existing research has not explicitly revealed the emergency response of PDN with leveraging multiple CESs.This paper proposes a decentralized Self-Healing strategy of PDN to minimize the entire load loss,in which multi-area CESs’potentials including thermal storage and building thermal inertia,as well as the flexible topology of PDN,are reasonably exploited for service recovery.For sake of privacy preservation,the co-optimization of PDN and CESs is realized in a decentralized manner using adaptive alternating direction method of multipliers(ADMM).Furtherly,bilateral risk management with conditional value-at-risk(CVaR)for PDN and risk constraints for CESs is integrated to deal with uncertainties from outage duration.Case studies are conducted on a modified IEEE 33-bus PDN with multiple CESs.Numerical results illustrate that the proposed strategy can fully utilize the potentials of multi-area CESs for coordinated load restoration.The effectiveness of the performance and behaviors’adaptation against random risks is also validated.

关键词： Power distribution network(PDN) central energy station(CES) bilateral risk management Self-Healing alternating direction method of multipliers(ADMM)

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