聚氨酯载体的逐层自组装亲水改性研究  

Hydrophilic Modification of Polyurethane Carrier through Layer-by-Layer Self-Assembly

作　　者：李昕阳[1] 和亚宁[2] 邱松[1] 杨芳芳[1] 

机构地区：[1]中国石油化工股份有限公司,北京化工研究院环保所,北京100013 [2]清华大学化工系高分子研究所,教育部先进材料重点实验室,北京100084

出　　处：《高分子通报》2016年第3期36-42,共7页Polymer Bulletin

摘　　要：利用自组装技术在聚氨酯载体表面制备超支化重氮盐(HB-DAS)/聚苯乙烯磺酸钠(PSS)多层膜,通过红外和椭偏仪表征膜的组装过程,利用接触角研究改性后载体的亲水性和稳定性,并对载体改性前后的生物学性能进行评价。结果表明,HB-DAS和PSS可在聚氨酯表面形成均匀的薄膜。改性后聚氨酯表面具有良好的亲水性,接触角随组装层数的增加而降低,改性载体具有良好的耐酸碱性。改性后载体对微生物的吸附性能明显优于改性前,明显缩短生化系统的启动周期。In this paper, HB-DAS/PSS multilayers were fabricated through layer-by-layer self-assembly on polyurethane carrier surface. The multilayers fabrication process was characterized by using UV-vis absorption spectroscopy and optical ellipsometry. The biological quality of carries was carefully investigated. Uniform HB-DAS/PSS multilayers on the polyurethane surface could be obtained. The modified polyurethane surface showed good hydrophilicity and the water contact angle decreased as the numbers of the multilayers increased. The modified carriers showed good stability, high adsorption rate for microorganism, and short start-up period of biochemical system.

关 键 词：超支化重氮盐 层层自组装 聚氨酯载体 亲水改性 生物学性能 

分 类 号：TQ328.3[化学工程—合成树脂塑料工业]