Exploiting catalytic chain transfer polymerization for the synthesis of carboxylated latexes via sulfur‐free RAFT
Exploiting catalytic chain transfer polymerization for the synthesis of carboxylated latexes via sulfur‐free RAFT
复制标题
利用催化链转移聚合通过无硫 RAFT 合成羧化乳胶
DOI：
10.1002/pola.29302
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
D. Haddleton
中科院分区：
文献类型：
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作者：
Ataulla Shegiwal;A. M. Wemyss;M. A. J. Schellekens;J. de Bont;J. Town;E. Liarou;G. Patias;Christophe J. Atkins;D. Haddleton
我们提出了一项系统研究，将羧基引入乳胶颗粒中，以增强胶体稳定性和乳胶的物理性能。通过乳液中催化链转移聚合（CCTP）合成了甲基丙烯酸和甲基丙烯酸甲酯的统计共聚物。乙烯基封端的低聚物又成功地用作链转移剂，通过无硫可逆加成断裂链转移聚合（SF-RAFT）形成二嵌段和假三嵌段共聚物。使用 1H NMR、尺寸排阻色谱 (SEC)、动态光散射 (DLS)、动态力学分析 (DMA)、接触角测量和基质辅助激光解吸/电离飞行时间质谱 (MALDI-TOF-MS) 技术对这些共聚物进行了表征。 © 2019 Wiley periodicals, Inc. J. Polym。科学，A 部分：聚合物。化学。 2019年
We present a systematic study of incorporating carboxyl groups into latex particles to enhance colloidal stability and the physical properties of the latex. Statistical copolymers of methacrylic acid and methyl methacrylate) were synthesized via catalytic chain transfer polymerization (CCTP) in emulsion. The vinyl‐terminated oligomers were in turn successfully utilized as chain transfer agents for the formation of diblock and pseudo triblock copolymers via sulfur‐free reversible addition–fragmentation chain transfer polymerization (SF‐RAFT). These copolymers were characterized using 1H NMR, size exclusion chromatography (SEC), dynamic light scattering (DLS), dynamic mechanical analysis (DMA), contact angle measurements and matrix‐assisted laser desorption/ionization time of flight mass spectroscopy (MALDI‐TOF‐MS) techniques. © 2019 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2019