木筏
共聚物
链式转移
丙烯酰胺
丙烯酸
可逆加成-断裂链转移聚合
高分子化学
聚合
自由基聚合
活性聚合
摩尔质量分布
反应性(心理学)
化学
材料科学
有机化学
聚合物
医学
替代医学
病理
作者
Umberto Capasso Palmiero,Anna Chovancová,Danilo Cuccato,Giuseppe Storti,Igor Lacı́k,Davide Moscatelli
出处
期刊:Polymer
[Elsevier]
日期:2016-08-01
卷期号:98: 156-164
被引量:12
标识
DOI:10.1016/j.polymer.2016.06.024
摘要
The reversible addition-fragmentation chain transfer (RAFT) copolymerization of non-ionized acrylic acid with acrylamide in dimethyl sulfoxide is investigated and compared with the conventional free radical process carried out at the same conditions. The effect of the living nature of the RAFT process on overall polymerization rate and on copolymer composition is studied by in situ 1H NMR. The same values of reactivity ratios (rAA = 1.55 ± 0.02 and rAm = 0.75 ± 0.02) are estimated for both the processes, living and non-living. The copolymers prepared by RAFT polymerization exhibit well-controlled composition, with narrow distribution. This approach can be applied to the synthesis of copolymer standards at specific composition for direct calibration of size-exclusion chromatography.
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