CAJ | 학술논문

以三硫代碳酸二（α,α′-二甲基-α-乙酸）酯（BDATC）为链转移剂，以苯乙烯、马来酸酐、丙烯酸为原料，通过可逆加成-断裂链转移（RAFT）合成了双亲嵌段共聚物 PSt-b-P(St-alt-MA)-b-PAA。通过选择性溶剂 N,N-二甲基甲酰胺（DMF）诱导聚合物进行自组装，利用紫外-可见光光度仪、纳米激光粒度仪详细研究了共聚物中亲疏水嵌段长度、初始浓度、体系pH值对聚合物自组装行为的影响。通过化学交联的方法制备得到了聚合物交联胶束，利用透射电镜表征了形貌与尺寸，研究明确了其形状和尺寸的稳定性。结果表明，上述因素均会影响共聚物的自组装行为和自组装胶束的形态，经乙二胺交联得到的交联自组装胶束平均粒径为145.4nm，并具有良好的形状和尺寸稳定性。
이삼류대탄산이（α,α′-이갑기-α-을산）지（BDATC）위련전이제，이분을희、마래산항、병희산위원료，통과가역가성-단렬련전이（RAFT）합성료쌍친감단공취물 PSt-b-P(St-alt-MA)-b-PAA。통과선택성용제 N,N-이갑기갑선알（DMF）유도취합물진행자조장，이용자외-가견광광도의、납미격광립도의상세연구료공취물중친소수감단장도、초시농도、체계pH치대취합물자조장행위적영향。통과화학교련적방법제비득도료취합물교련효속，이용투사전경표정료형모여척촌，연구명학료기형상화척촌적은정성。결과표명，상술인소균회영향공취물적자조장행위화자조장효속적형태，경을이알교련득도적교련자조장효속평균립경위145.4nm，병구유량호적형상화척촌은정성。
Amphiphilic block copolymer PSt-b-P(St-alt-MA)-b-PAA was synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization using S,S′-bis(R,R′-dimethyl-α′′-acetic acid)-trithiocarbonate as RAFT agent and styrene,maleic anhydride,acrylic acid as monomers. The self-assembled micelles of PSt-b-P(St-alt-MA)-b-PAA were induced by selective solvent dimethylfomamide. The effects of block length,initial concentration and pH on the self-assembled micelles were investigated through ultra-violet and visible spectrophotometer and laser particle size analyzer. The crosslinked micelles fabricated by chemical crosslinking had stable morphology and diameter as characterized with transmission electron microscope. Block length,initial concentration and pH would affect self-assembly behavior of copolymer and morphology of self-assembled micelle. The micelles crosslinked by ethylenediamine with average particle diameter of 145.5nm had stable morphology and size.