论文部分内容阅读
以CuCl/N-苄基-2-吡啶基甲亚胺(NBPM)/2-溴异丁酸乙酯(EBrIB)作为引发催化体系,使甲基丙烯酸(N-羟基琥珀酰亚胺)酯(MASI)进行ATRP聚合,得到的聚甲基丙烯酸(N-羟基琥珀酰亚胺)酯(PMASI)具有较高的单体转化率(90%)、较窄PDI(~1.10)和较高的分子量。在整个聚合过程中,较强的C—Cl键仍使聚合物的端基保持活性,有利于与第二单体甲基丙烯酸(N,N-二甲氨基)乙酯(DMAEMA)嵌段共聚形成结构明确的嵌段共聚物P(MASI-b-DMAEMA)。当MASI的链长较短时,P(DMAEMA40-b-MASI16)具有水溶性并可自组装成直径均匀的核-壳型微胶束,间接证明了聚合过程的可控特征。
Using CuCl / N-benzyl-2-pyridylmethaneimine (NBPM) / ethyl 2-bromoisobutyrate (EBrIB) as the initiating catalyst system, (N-hydroxysuccinimide) MASI), the resulting polymethacrylic acid (N-hydroxysuccinimide) ester (PMASI) had higher monomer conversion (90%), narrower PDI (~1.10) and higher molecular weight . The stronger C-Cl bond still retains the polymer end groups throughout the polymerization, favoring the block copolymerization with the second monomer (DMAEMA) A well-defined block copolymer P (MASI-b-DMAEMA) was formed. When the MASI chain length is short, P (DMAEMA40-b-MASI16) is water-soluble and can be self-assembled into a uniform diameter core-shell micelles, indirectly demonstrating the controllable characteristics of the polymerization process.