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.
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