Motoyanagi Jin, Oguri Ayaha, Minoda Masahiko
Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
Polymers (Basel). 2020 Oct 1;12(10):2255. doi: 10.3390/polym12102255.
Here we report the controlled synthesis of alternating copolymers by reversible addition-fragmentation chain transfer (RAFT) polymerization of hydroxy-functionalized vinyl ether (DEGV) and ethylmaleimide (EtMI) using dithiocarbonate derivative (CPDB) as the RAFT reagent. The resulting alternating copolymer poly[ethylmaleimide--(diethylene glycol mono vinyl ether)] (poly(MalMI--DEGV)) had a relatively narrow molecular weight distribution (/ < 1.4). These polymers are fully soluble in cold water (5 °C) and an aqueous solution of poly(MalMI--DEGV) became turbid upon heating (using an incident wavelength of 600 nm and 1.0 mg mL (0.1 wt %) polymer concentration), indicating phase separation above the cloud point temperature (). The of the polymer solution ranged from 15-35 °C, depending on the molecular weight and molecular weight distribution of the polymer.
在此，我们报道了以二硫代碳酸酯衍生物（CPDB）作为可逆加成-断裂链转移（RAFT）试剂，通过羟基官能化乙烯基醚（DEGV）和乙基马来酰亚胺（EtMI）的RAFT聚合反应可控合成交替共聚物。所得交替共聚物聚[乙基马来酰亚胺-（二甘醇单乙烯基醚）]（聚（MalMI-DEGV））具有相对较窄的分子量分布（/ < 1.4）。这些聚合物完全可溶于冷水（5°C），并且聚（MalMI-DEGV）的水溶液在加热时会变浑浊（使用600 nm的入射波长和1.0 mg mL（0.1 wt%）的聚合物浓度），表明在浊点温度（）以上发生相分离。聚合物溶液的浊点温度范围为15 - 35°C，这取决于聚合物的分子量和分子量分布。
