采用逐步聚合的方法,以功能化丁腈橡胶(f-CTBN)与不同相对分子质量(Mn)聚乙二醇(PEG)共聚合得到一系列高支化嵌段聚氨酯(f-CTBN/PEG)高分子材料.通过对材料溶胀性,模拟生物环境降解,以FT-IR对基团变化分析和ESEM形貌观察,以及力学性能的测试.结果表明:材料的降解速率随时间延长呈减慢趋势,且随PEG含量的增大材料降解越快;拉伸强度(超过18MPa)和杨氏模量(超过40MPa)相对较高.有望根据需求来调节f-CTBN/PEG的比例大小,从而用于医用防护材料的生产.
参考文献
[1] | 刘庆丰,冯胜山,褚衡,严海彪,许顺红.医用可生物降解聚氨酯材料研究及进展[J].工程塑料应用,2007(08):66-69. |
[2] | 刘乃亮,齐暑华,理莎莎,吴利敏,鲁惠玲.CTBN增韧改性热固性树脂研究进展[J].中国塑料,2011(03):18-24. |
[3] | Johnson l;Dirk S .Breathable TPE films for medical applications[J].Medical Device &Dignostic Industry,2000,7:30-35. |
[4] | Ralf S;D irk S;Imbach K D .Breathable protective cloth ing with hydrophilic thermoplastic elastomer membrane films[J].Journal of Coated Fabrics,1997,27:105-108. |
[5] | Guo K;Chu CC .Biodegradation of unsaturated poly(ester-amide)s and their hydrogels.[J].Biomaterials,2007(22):3284-3294. |
[6] | Loh XJ;Goh SH;Li J .Hydrolytic degradation and protein release studies of thermogelling polyurethane copolymers consisting of poly((R)-3-hydroxybutyrate), poly(ethylene glycol), and poly(propylene glycol).[J].Biomaterials,2007(28):4113-4123. |
[7] | 胡国栋.聚氨酯的血液相容性评价[J].国外医学(生物医学工程分册),2002(06):271-273,284. |
[8] | 杜民慧,李建树,魏阳,谢兴益,何成生,樊翠蓉,钟银屏.生物医用脂肪族聚氨酯的合成、表征及血液相容性研究[J].生物医学工程学杂志,2003(02):273-276. |
[9] | Saraf V P;Glasser W G .Engineering plastics from lignin.Ⅲ.Structure property relationships in solution cast polyurethane films[J].Journal of Applied Polymer Science,1984,29:1831-1841. |
[10] | Zhao CX;Zhang WD .Preparation of waterborne polyurethane nanocomposites: Polymerization from functionalized hydroxyapatite[J].European Polymer Journal,2008(7):1988-1995. |
[11] | Sun, G;Zhang, XZ;Chu, CC .Effect of the molecular weight of polyethylene glycol (PEG) on the properties of chitosan-PEG-poly(N-isopropylacrylamide) hydrogels[J].Journal of Materials Science. Materials in Medicine,2008(8):2865-2872. |
[12] | Lu Y L;Wang S H;Li ZQ .Characterization,microstructure and gas sensitive esponse behavior of PEG/lithium salt polymer electrolyte films[J].Journal of Materials Science,2008,43:174-184. |
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