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Biomedical and Environmental Sciences 2024年第7期37卷 739-753页

作者： Keyuan Xu Xiaoting Tang Yun Xiang yiding shen Zhennan Deng Pingping Ma Xinkun shen Department of Orthopaedics The Third Affiliated Hospital of Wenzhou Medical University(Ruian People’s Hospital)Wenzhou 325016ZhejiangChina School and Hospital of Stomatology Wenzhou Medical UniversityWenzhou 325027ZhejiangChina

Objective A high sodium(HS)diet is believed to affect bone metabolism *** its impact on osseointegration of titanium(Ti)implants holds significant implications for postoperative dietary management of implanted *** This investigation probed the impact of sodium ions(Na^(+))on neovascularization and osteogenesis around Ti implants in vivo,utilizing micro-computed tomography,hematoxylin and eosin staining,and immunohistochemical ***,in vitro experiments assessed the effects of varied Na^(+)concentrations and exposure durations on human umbilical vein endothelial cells(HUVECs)and MC3T3-E1 *** In vivo,increased dietary sodium(0.8%-6.0%)led to a substantial decline in CD34 positive HUVECs and new bone formation around Ti implants,alongside an increase in inflammatory *** vitro,an increase in Na^(+)concentration(140-150 mmol/L)adversely affected the proliferation,angiogenesis,and migration of HUVECs,especially with prolonged *** MC3T3-E1 cells initially exhibited less susceptibility to high Na^(+)concentrations compared to HUVECs during short-term exposure,prolonged exposure to a HS environment progressively diminished their proliferation,differentiation,and osteogenic *** These findings suggest that HS diet had a negative effect on the early osseointegration of Ti implants by interfering with the process of postoperative vascularized bone regeneration.

关键词： High-sodium Implants Vascularization Osseointegration

Smart ZnS@C filler for super-anticorrosive self-healing zinc-rich epoxy coating

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Nano Research 2022年第5期15卷 4756-4764页

作者： Kai Yang Yixue Duan Guicheng Liu Guoyan Ma Hao Fu Xuyong Chen Manxiang Wang Gangqiang Zhu Woochul Yang yiding shen Shaanxi Key Laboratory of Chemical Additives for Industry Shaanxi University of Science and TechnologyXi’an 710021China Department of Physics Dongguk UniversitySeoul 04620Republic of Korea State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China College of Chemistry and Chemical Engineering Xi'an Shiyou UniversityXi'an 710065China School of physics and Information Technology Shaanxi Normal UniversityXi’an 710062China

The zinc-rich epoxy cathodic protection coating is the most widely used anticorrosion material for marine ***,traditional conductive fillers lack the intelligent self-healing effect,which limits the long-term anticorrosion ***,with uniform carbon-coated ZnS(ZnS@C)nanoballs as the smart active release filler,we propose an anticorrosive and self-healing zinc-rich maleic anhydride epoxy *** to the high pore filling efficiency of the nanoballs,the water vapor transmission rate of the coating with an initial corrosion efficiency of 99.92%and a low-frequency impedance of|Z|f=10mHz=3.88×10^(10) Ω·cm^(2),was reduced by 52%.The carbon-shell of the nanoball increases electron transmission paths in the coating and improves conductivity by nearly two orders of magnitude,which effectively activates more Zn-sites and extends the cathodic protection ***,once the steel-substrate undergoes regional corrosion,the SO_(4)^(2-)hydrolyzes from the ZnS-core of the nanoball and reacts with iron ions on the corroded area accurately and intelligently to fill the gap and self-heals into a new dense barrier layer(Fe_(2)(SO_(4))_(3),etc.),which significantly improves the shielding protection ability during the long-term usage of the *** effective anticorrosion time of the proposed coating could be up to 3,400 h.

关键词： smart ZnS@C fller microemulsion-carbonization method zinc-rich epoxy coating anticorrosion self-healing

High proportion strontium-doped micro-arc oxidation coatings enhance early osseointegration of titanium in osteoporosis by anti-oxidative stress pathway

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Bioactive Materials 2022年第4期7卷 405-419页

作者： Xinkun shen Kai Fang Kendrick Hii Ru Yie Zixin Zhou yiding shen Shuyi Wu Yue Zhu Zhennan Deng Pingping Ma Jianfeng Ma Jinsong Liu School and Hospital of Stomatology Wenzhou Medical UniversityWenzhou325027China

The excessive accumulation of reactive oxygen species(ROS)under osteoporosis precipitates a microenvironment with high levels of oxidative stress(OS).This could significantly interfere with the bioactivity of conventional titanium implants,impeding their early osseointegration with *** have prepared a series of strontium(Sr)-doped titanium implants via micro-arc oxidation(MAO)to verify their efficacy and differences in osteoinduction capabilities under normal and osteoporotic(high OS levels)*** from the chemical composition,all groups exhibited similar physicochemical properties(morphology,roughness,crystal structure,and wettability).Among the groups,the low Sr group(Sr25%)was more conducive to osteogenesis under normal *** contrast,by increasing the catalase(CAT)/superoxide dismutase(SOD)activity and decreasing ROS levels,the high Sr-doped samples(Sr75% and Sr100%)were superior to Sr25% in inducing osteogenic differentiation of MC3T3-E1 cells and the M2 phenotype polarization of RAW264.7 cells,thus enhancing early ***,the results of both in vitro cell co-culture and in vivo studies also showed that the high Sr-doped samples(especially Sr100%)had positive effects on osteoimmunomodulation under the OS ***,the collated findings indicated that the high proportion Sr-doped MAO coatings were more favorable for osteoporosis patients in implant restorations.

关键词： Osteoporosis Oxidative stress Strontium Osteoimmunomodulation Osteogenesis

Effects of Silica Sol on Structure and Properties of Core-Shell Silicon-Acrylic Materials

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Advances in Chemical Engineering and Science 2012年第2期2卷 192-198页

作者： Xuan Li yiding shen Haihua Wang Guiqiang Fei Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry Ministry of Education Shanxi University of Science and Technology Xi’an China

Silica sol prepared by sol-gel method was introduced into poly (butyl acrylate) (PBA)/poly (butyl acrylate-styrene-methacryloxypropyl trimethoxysilane) (PSBM) core-shell emulsions to prepare a series of paper surface sizing agents. The rheological measurement indicated that PSBM emulsions exhibited shear-thinning behavior, and the phenomena became more pronounced with increasing silica sol concentration. Dynamic mechanical analysis (DMA) demonstrated that the stronger interfacial interaction between silica sol and polymer matrix, but microphase separation took place with excess silica sol. Thereby the tensile strength and thermal stability of emulsion films were increased with desirable silica sol concentration, and when silica sol concentration was greater than 6 wt%, the tensile strength leveled off and the decomposition temperature decreased from 351.19℃ to 331.63℃. The degree of crystallinity increased from 5.12% to 10.98% with 4% silica sol addition, resulting in enhanced rigidity of films. Furthermore, the interaction between polymer and fiber was improved with certain amount of silica sol, resulting in improved sizing degree, ring crush strength, surface strength and folding strength. However, excessive crosslinking will be harmful for the properties of sized paper.

关键词： Core-Shell Emulsion Silica Sol Thermal Property Mechanical Property Surface Sizing

Preparation and property of solvent-free and high-solids poly (urethane-acrylate) nano-composite coating based on reactive surfmer

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Preparation and property of solvent-free and high-solids pol...

水性聚氨酯／纳米二氧化硅杂化材料的制备及性能

第二届海峡两岸功能材料科技与产业峰会（2015）

作者： Haihua WANG Guiqiang FEI yiding shen Jie FAN Key laboratory of Auxiliary Chemistry & Technology for Chemical Industry Ministry of EducationShaanxi University of Science & Technology

Environmental concerns and economic competitiveness have driven the coating technologist to explore the efficiency of organic coatings at a minimum volatile organic component(VOC).Organic co-solvent was generally adopted to decrease the viscosity of prepolymer in the preparation of polyurethane prepolymer,which is inevitably harmful to the human and *** organic solvent was substituted by vinyl monomers in

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高分子材料科学与工程 2011年第6期27卷 137-141页

作者：王磊沈一丁赖小娟教育部轻化工助剂化学与技术重点实验室陕西科技大学陕西西安710021

以三羟甲基丙烷(TMP)为内交联剂,合成了一种内交联的水性聚氨酯(WPU)预聚体,以KH550为偶联剂,加入亲水型纳米二氧化硅(A200),通过溶胶-凝胶过程合成了一种水性聚氨酯/纳米二氧化硅杂化材料(PUSi)。通过红外光谱(FT-IR)、热重分析(TG)和... 详细信息

以三羟甲基丙烷(TMP)为内交联剂,合成了一种内交联的水性聚氨酯(WPU)预聚体,以KH550为偶联剂,加入亲水型纳米二氧化硅(A200),通过溶胶-凝胶过程合成了一种水性聚氨酯/纳米二氧化硅杂化材料(PUSi)。通过红外光谱(FT-IR)、热重分析(TG)和透射电镜(TEM)等测试对PUSi的结构和性能进行了研究,并研究了纳米SiO_2对PUSi杂化乳液粒径、形貌及PUSi胶膜力学性能、耐热性、耐水、耐介质性的影响。红外分析表明,WPU大分子和A200之间形成了化学键,溶胶-凝胶过程中形成了Si-O-Si结构。TG分析表明,A200的加入提高了材料的耐热性。当w(A200)由0%增至2.5%时,乳液粒径由80.3nm增至152.1 nm,膜的拉伸强度由8.5 MPa增加到23.6MPa,耐水性能得到提高,硬度亦相应提高。

关键词：水性聚氨酯纳米SiO2 有机硅烷偶联剂交联溶胶-凝胶

酮肼交联及硅烷偶联水性聚氨酯的成膜机理及其性能研究

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高分子学报 2010年第9期20卷 1122-1128页

作者：赵静沈一丁赖小娟教育部轻化工助剂化学与技术重点实验室陕西科技大学西安710021

用二乙醇胺(DEA)和双丙酮丙烯酰胺(DAAM)按Michael加成反应机理合成了一种新的聚氨酯扩链剂DDP(N-[(1,1-二甲基-2-乙酰基)乙基]-β-二羟乙氨基丙酰胺).以异佛尔酮二异氰酸酯(IPDI)、聚四氢呋喃二醇(PTMG1000)、二羟甲基丙酸(DMPA)、三... 详细信息

用二乙醇胺(DEA)和双丙酮丙烯酰胺(DAAM)按Michael加成反应机理合成了一种新的聚氨酯扩链剂DDP(N-[(1,1-二甲基-2-乙酰基)乙基]-β-二羟乙氨基丙酰胺).以异佛尔酮二异氰酸酯(IPDI)、聚四氢呋喃二醇(PTMG1000)、二羟甲基丙酸(DMPA)、三羟甲基丙烷(TMP)等为主要原料,在用γ-氨基丙基三乙氧基硅烷(KH550)封端改性聚氨酯的基础上,采用自制含酮羰基二元醇N-[(1,1-二甲基-2-乙酰基)乙基]-β-二羟乙氨基丙酰胺(DDP)和1,4-丁二醇(BDO)作为扩链剂,制备了侧链含酮羰基的聚氨酯乳液.通过外加己二酸二酰肼(ADH),制得室温自交联乳液.利用衰减全反射红外光谱(ATR-FTIR)和核磁共振波谱(NMR)对扩链剂(DDP)和涂膜结构进行表征,ATR-FTIR和NMR测试证实了DDP的生成并参与反应合成了聚氨酯及乳液成膜时酮肼交联反应的发生.研究了n(—NHNH2)/n(—CO—)、n(NCO)/n(OH)、DDP含量对聚氨酯涂膜性能的影响.结果表明,在己二酸二酰肼(ADH)的用量为0时,涂膜的吸水率随DDP含量的增加而增大;n(NCO)/n(OH)>1.40时,聚氨酯难以乳化并且乳液稳定性变差;在最佳配比n(—NHNH2)/n(—CO—)=1,n(NCO)/n(OH)=1.40的条件下,DDP%从0增大到7.22%时,涂膜的吸水率从39.36%降低到18.92%同时表现出很好的耐溶剂性能,交联度从51.49%上升至90.23%,拉伸强度从20.09MPa增大到28.26MPa,硬度达2H.热失重分析(TGA)表明酮肼交联结构的引入提高了涂膜的热稳定性.

关键词：高交联水性聚氨酯酮肼交联力学性能吸水率热稳定性

氰乙基淀粉接枝阳离子聚丙烯酰胺树脂的结构与性能

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高分子材料科学与工程 2011年第6期27卷 41-44页

作者：刘宝华沈一丁轻化工助剂化学与技术教育部重点实验室陕西科技大学陕西西安710021 宜宾职业技术学院生物与化工工程系四川宜宾644003

以阳离子淀粉、丙烯腈、丙烯酰胺为主要单体,氧氯化锆(ZrOCl_2·8H_2O)为交联剂,采用无皂乳液两步聚合法制备了氰乙基淀粉接枝阳离子聚丙烯酰胺树脂(AS-CPAM)。用红外光谱(FT-IR)、X射线衍射(XRD)、差示扫描量热分析(DSC)和热重分析(TG... 详细信息

以阳离子淀粉、丙烯腈、丙烯酰胺为主要单体,氧氯化锆(ZrOCl_2·8H_2O)为交联剂,采用无皂乳液两步聚合法制备了氰乙基淀粉接枝阳离子聚丙烯酰胺树脂(AS-CPAM)。用红外光谱(FT-IR)、X射线衍射(XRD)、差示扫描量热分析(DSC)和热重分析(TG)对聚合物结构进行了表征,结果表明,AS-CPAM中各单体单元的存在,且AA-CPAM树脂属于非晶态聚合物,聚合体系中主要成分AS及CPAM由于交联剂的存在其相对依赖性增加;聚合物在198.3℃开始分解,符合造纸工艺的温度要求。扫描电镜(SEM)观察了纸张表面及断面的微观结构,显示出纤维之间结合得更加紧密,为提高纸张干强度提供了依据。当(AS-CRAM)用量增至1%时,纸张表面强度逐渐增大,环压强度提高27.8%,耐破度提高45%。

关键词：氰乙基淀粉表面强度增干强剂接枝共聚聚丙烯酰胺

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聚乳酸/乙基纤维素复合膜的制备及其性能

复合材料学报 2007年第3期24卷 40-44页

作者：沈一丁赖小娟王磊陕西科技大学化学与化工学院西安710021

以烯基琥珀酸酐(ASA)作为新型增塑剂,使用三氯甲烷作为聚乳酸(PLA)和乙基纤维素(EC)的共溶剂,采用溶液浇铸法成功制备了聚乳酸/乙基纤维素复合膜。用红外光谱(FTIR)、X射线衍射(XRD)表征了复合膜结构,并测试了其吸水性和力学性能。FTIR... 详细信息

以烯基琥珀酸酐(ASA)作为新型增塑剂,使用三氯甲烷作为聚乳酸(PLA)和乙基纤维素(EC)的共溶剂,采用溶液浇铸法成功制备了聚乳酸/乙基纤维素复合膜。用红外光谱(FTIR)、X射线衍射(XRD)表征了复合膜结构,并测试了其吸水性和力学性能。FTIR测试结果显示,复合膜中存在强烈的氢键相互作用。XRD表明,ASA显著提高了PLA和EC 2种高聚物的界面黏合性。力学测试结果表明,ASA对该复合膜具有良好的增塑效果。当膜中PLA质量分数≤37%时,PLA对复合膜起增强作用。复合膜的吸水性随ASA含量的增大而降低,随PLA含量的增大而提高。该复合膜作为一种潜在的药物缓释材料,将具有广阔应用前景。

关键词：聚乳酸乙基纤维素烯基琥珀酸酐复合膜

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加工纸专用化学品的研究进展

化工进展 2007年第1期26卷 7-12页

作者：沈一丁陕西科技大学化学化工学院陕西咸阳712081

介绍了造纸专用涂布黏合剂、表面施胶剂、润滑剂、分散剂、抗水剂和防水防油剂、层压纸黏合剂等。加工纸专用化学品的研究重点是绿色化学品、功能性化学品、高分子表面活性剂和特种高分子,主要产品是用以提高强度、施胶度和耐溶剂性能... 详细信息

介绍了造纸专用涂布黏合剂、表面施胶剂、润滑剂、分散剂、抗水剂和防水防油剂、层压纸黏合剂等。加工纸专用化学品的研究重点是绿色化学品、功能性化学品、高分子表面活性剂和特种高分子,主要产品是用以提高强度、施胶度和耐溶剂性能的表面施胶剂;提高油墨印刷性能的适印剂,无醛抗水剂,高分子分散剂及黏度调节剂,具有防水防油、润滑和剥离功能的有机硅和有机氟高分子。

关键词：涂布黏合剂表面施胶剂润滑剂分散剂抗水剂高分子表面活性剂