Brandl Florian, Drache Marco, Schier Jan E S, Nentwig Tristan, Contreras-López David, Saldívar-Guerra Enrique, Hutchinson Robin A, Beuermann Sabine
Institute of Technical Chemistry, Clausthal University of Technology, Arnold-Sommerfeld-Str.4, 37120, Clausthal-Zellerfeld, Germany.
Department of Chemical Engineering, Dupuis Hall, Queen's University, Kingston, Ontario, K7L 3N6, Canada.
Macromol Rapid Commun. 2017 Jul;38(14). doi: 10.1002/marc.201700105. Epub 2017 May 10.
Pulsed-laser polymerization combined with polymer analysis by NMR and size-exclusion chromatography is used to study the radical copolymerization kinetics of isoprene (IP) with glycidyl methacrylate (GMA). The copolymer is characterized by a close-to-alternating microstructure, with the addition of IP leading to a significant decrease in the composition-averaged propagation rate coefficient. A rigorous fitting strategy is developed to fit a mixed penultimate model to the data, with the selectivity of the IP, but not the GMA, macroradical dependent on the penultimate unit.
采用脉冲激光聚合结合核磁共振和尺寸排阻色谱法对聚合物进行分析，以研究异戊二烯（IP）与甲基丙烯酸缩水甘油酯（GMA）的自由基共聚动力学。该共聚物具有接近交替的微观结构，IP的加入导致组成平均传播速率系数显著降低。开发了一种严格的拟合策略，将混合倒数第二单元模型拟合到数据中，其中IP而非GMA的大分子自由基的选择性取决于倒数第二单元。
