共查询到20条相似文献,搜索用时 46 毫秒
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生物材料与医用高分子 总被引:4,自引:0,他引:4
生物材料与医用高分子冯新德(北京大学化学系北京100871)生物材料(Biomaterial)的定义按照第六届国际生物材料年会(1974)所定的是“生物材料是一种植入生体活系统内或与活系统相结合而设计的物质,它与生体不起药理反应”,也就是代替或置换生... 相似文献
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可生物降解的高分子类型,合成和应用 总被引:28,自引:0,他引:28
综述了生物降解高分子的定义,实现生物降妥的主要方法和生物降解高分子主要类别,以及它们在生物医学领域及环保事业等方面的重要用途和意义。阐明了影响生物降解速度的主要因素,对控制,调节生物降解速度的订研究动态进行了介绍。 相似文献
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高分子生物材料分子工程研究进展(下) 总被引:12,自引:0,他引:12
高分子生物材料分子工程研究进展(下)林思聪(南京大学高分子科学与工程系,生物材料分子工程及控制释放分子工程室,南京,210093)4体内稳定的高分子生物材料目前用于制造半永久性内植物的体内稳定高分子生物材料主要有有机硅橡胶、聚四氟乙烯、聚对-苯二甲酸... 相似文献
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医用高分子材料表面的润滑改性进展 总被引:4,自引:0,他引:4
综述了医用高分子材料表面的润滑改性方法,对影响表面润滑性的因素进行了讨论,简述了材料表面润滑性的测定方法,润滑机理及润滑表面的形态,概述了表面润滑的医用高分子材料在临床中的应用。 相似文献
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生物降解聚合物的研究和产业化进展及展望 总被引:3,自引:0,他引:3
结合作者等近十年来在生物降解聚合物领域的研究和产业化工作,本文概述了聚乳酸、聚氨基酸、聚对二氧六环酮及其它生物降解聚合物的合成进展,综述了可生物降解温度敏感水凝胶、形状记忆高分子材料的研究概况,阐述了可生物降解聚合物在生物活性大分子控释体系、超细纤维组织工程支架上的应用研究,介绍了可生物降解聚合物在食品包装、纺织和汽车电子等方面的应用,总结了可生物降解聚合物、医疗器械、药物制剂和组织工程等领域产业化近况.最后展望了生物降解聚合物的研究、应用和产业化前景. 相似文献
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《高分子科学杂志,C辑:聚合物评论》2013,53(3):385-409
Abstract Starch, one of the most inexpensive and most readily available of all natural polymers, can be processed into thermoplastic materials only in the presence of plasticizers and under the action of heat and shear. Poor water resistance and low strength are limiting factors for the use of materials manufactured only from starch, and hence the modification of starch is often achieved by blending aliphatic polyesters. In this review, the literatures concerning the properties of various blends of starch and aliphatic polyesters have been summarized. The biodegradable rates of blends can be controlled to a certain extent depending on the constitutions of blends, and the mechanical properties of blends are close to those of traditional plastics such as polyethylene and polystyrene. The reduction of their sensitivity to humidity makes these materials suitable for the production of biodegradable films, injection-molded items, and foams. 相似文献
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The public and governmental awareness regarding more sustainable products have gained significant momentum in the last decade and are directing the future research of the next generation of materials and processes. In such a setting, biodegradable polymers are regarded as one of the technologies driving the innovation and current market growth because they provide an additional end of life option. Tracing the evolving trends of these emerging technologies will help researchers, investors, and policy makers to better evaluate the opportunities of the technology as well as to understand the technology's changing characteristics. Therefore, within this study, we perform bibliographic analyses based on patent information to delineate the current research landscape and to anticipate the future development trends by focusing on the cases of poly(lactic acid) (PLA), poly(hydroxyalkanoates) (PHAs), polycaprolactone (PCL), poly(butylene succinate) (PBS), and poly(butylene adipate-co-terephthalate) (PBAT). The following findings were made: First, PLA gets the highest attention from both academia and industry. Second, the overall international presence of biodegradable polymer patents is high, especially in the field of PHAs. Third, technology maturity and technology strength show that PLA is the most promising technology at present in technological terms, whereas PHAs, PCL, and PBS are uncertain technologies and PBAT has a rather low development potential. 相似文献
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在药物缓释体系中应用的可生物降解材料 总被引:8,自引:0,他引:8
对目前应用于药物缓释体系中的可生物降解材料的合成及应用作了广泛而深入的总结与评述,并就其发展趋势作了预测。参考文献20篇。 相似文献
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综述了生物可降解高分子材料的发展情况及其在药物释放领域的应用 ,着重介绍了聚乳酸和聚己内酯的研究进展和应用 相似文献
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电场纺丝是制备生物可降解及生物材料纳米纤维非织造布的简单工艺,由于纳米纤维具有较大的比表面积,具有多孔结构,使其在生物医学领域,如:组织工程、药物缓释及医用纱布等领域有潜在的应用前景。本文综述了生物降解材料及生物材料的电场纺丝及其应用。 相似文献
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Xiao-Jing Li Ying-Feng Wen Yong Wang Hai-Yan Peng Xing-Ping Zhou Xiao-Lin Xie 《高分子科学》2022,40(1):47-55
Supramolecular adhesives that enable debonding on-demand are of significant research interest for the development of adaptive and smart materials,yet,biodegrable supramolecular adhesives have been rarely exploited.Herein,telechelic,three-armed and four-armed CO2-based polyols with close molecular weights and various content(or carbonate unite content)have been synthesized via a zinc-cobalt double metal cyanide complex catalyzed ring-opening copolymerization of CO2 and propylene oxide,and further exploited as sustainable and biodegradable building blocks for supramolecular polymers(SMPs)with 2-ureido-4[1H]-pyrimidinone(UPy)motifs.Notably,the orthogonal modulation of the CO2 content and the topology of CO2-based polyols provide a unique opportunity to fine-tune the surface energy as well as the cohesive strength of the resulting CO2-based SMPs.Notably,a three-armed SMP with 44%CO2(3UPy-CO2-44%)can well balance the trade-off between surface energy and cohesive strength,therefore bestowing a high adhesive strength of 7.5 and 9.7 MPa towards stainless steel and wood substrates respectively by testing the corresponding single lap joints.Moreover,the light-responsive adhesion property of 3UPy-CO2-44%has been demonstrated exemplarily by blending with a UV sensitizer. 相似文献