PDEGMA-b-POVNGA@AuNPs的制备及表征

发布时间：2018-06-04 07:49

  本文选题：含糖聚合物 + 温敏性　； 参考：《精细化工》2017年03期

【摘要】：以6-O-乙烯基己二酸-D-吡喃型半乳糖(OVNGA)和温敏性的二聚乙二醇单甲醚甲基丙烯酸甲酯(DEGMA)作为单体,采用酶促法、可逆加成-断裂链转移自由聚合法(RAFT)和"一锅法"联用,并与金纳米粒子(AuNPs)复合,制备了具有温敏性的含半乳糖基的PDEGMA-b-POVNGA@AuNPs复合物。通过1HNMR、FTIR和GPC对PDEGMA-b-POVNGA进行了结构表征,UV-Vis、TEM和DLS对AuNPs和PDEGMA-b-POVNGA@AuNPs进行了性能测试,变温UV-Vis对PDEGMA-b-POVNGA及PDEGMA-b-POVNGA@AuNPs复合物进行了温敏性考察。结果表明:PDEGMA-b-POVNGA@AuNPs复合物是由PDEGMA-b-POVNGA和AuNPs以S—Au键键合,将聚合物接枝到了AuNPs表面。PDEGMA-b-POVNGA的Mn和Mw分别为9.42×104和1.45×105。AuNPs平均粒径为25 nm。PDEGMA-b-POVNGA和PDEGMA-b-POVNGA@AuNPs的低临界温度(LCST)分别约为35.0和34.5℃。
[Abstract]:The temperature sensitivity of PDEGMA - b - POVNGA and PDEGMA - b - POVNGA and PDEGMA - b - POVNGA - POVNGA and PDEGMA - b - POVNGA - POVNGA - POVNGA - POVNGA and PDEGMA - b - POVNGA - POVNGA - POVNGA - POVNGA and PDEGMA - b - POVNGA - POVNGA were investigated . The results showed that the PDEGMA - b - POVNGA - POVNGA and PDEGMA - b - POVNGA - POVNGA @ AuC were prepared by means of 1H NMR , FTIR and GPC . The results showed that the low critical temperature ( LCST ) of PDEGMA - b - POVNGA and PDEGMA - b - POVNGA and PDEGMA - b - POVNGA @ Aurea was about 35.0 and 34.5 鈩，

本文编号：1976583