Rusen Edina, Busuioc Cristina, Diacon Aurel
University POLITEHNICA of Bucharest, Faculty of Applied Chemistry and Materials Science Gh. Polizu Street 1-7 Bucharest 011061 Romania
National Research and Development Institute for Chemistry and Petrochemistry - ICECHIM 202 Splaiul Independenţei Bucharest 060021 Romania.
RSC Adv. 2020 Sep 28;10(59):35692-35700. doi: 10.1039/d0ra05936f.
The aim of this paper was the synthesis of amphiphilic copolymers by employing an atom transfer radical polymerization (ATRP), control polymerization "grafting from" method, initiated both on the surface of an iodinated polyvinyl chloride (PVC-I) membrane and in solution. The iodination of PVC was performed through a Conant-Finkelstein reaction that afforded a 30% molar transformation. Using the contact angle measurements, we highlighted the higher degree of grafting polyacrylic acid (PAA) in the case of solution polymerization, the polar fraction increasing significantly. The micromembrane obtained by surface grafting has pores with a homogenous distribution, which contain -COOH functional groups and with a pore size that decreased about 10 times compared to the initial membrane. The TGA analysis highlighted the thermal resistance changes that the polymers registered.
本文的目的是通过原子转移自由基聚合（ATRP）这种可控聚合的“接枝自”方法，在碘化聚氯乙烯（PVC-I）膜表面及溶液中引发合成两亲性共聚物。PVC的碘化通过康南特-芬克尔斯坦反应进行，实现了30%的摩尔转化率。通过接触角测量，我们发现溶液聚合时聚丙烯酸（PAA）的接枝度更高，极性部分显著增加。通过表面接枝得到的微膜具有分布均匀的孔，这些孔含有-COOH官能团，且孔径相比于初始膜减小了约10倍。热重分析突出了聚合物所呈现的耐热性变化。
