Advantage of graft architecture with a flexible main chain for implantation of ductile nature into brittle amorphous acrylic glass
Advantage of graft architecture with a flexible main chain for implantation of ductile nature into brittle amorphous acrylic glass
复制标题
DOI：
10.1016/j.polymer.2021.124316
复制
发表时间：
2021-11
期刊：
影响因子：
4.6
通讯作者：
Mikihiro Hayashi;Keisuke Shibata;S. Nobukawa
中科院分区：
文献类型：
--
作者：
Mikihiro Hayashi;Keisuke Shibata;S. Nobukawa
为了扩大热塑性聚合物的应用范围，需要对非晶态玻璃态聚合物进行增韧改性。本报告描述了植入韧性的性质到聚（甲基丙烯酸甲酯）（PMMA）树脂利用接枝结构与柔性聚酯主链，这是通过原子转移自由基聚合（ATRP）与接枝的方法，使用聚酯大分子引发剂轴承多溴侧基合成。与PMMA均聚物和含有增塑剂的共混物PMMA的比较显示，接枝型PMMA显示出高得多的伸长率而不牺牲模量。通过X射线散射、扫描电镜观察和流变学测试，分析了接枝型PMMA的韧性。最后，研究了主链长度和接枝链长度对接枝共聚物拉伸性能的影响。
Toughness enhancement of amorphous glassy polymers is required to expand the application range of thermoplastic polymers. This report describes the implantation of ductile nature into poly(methyl methacrylate) (PMMA) resins utilizing a graft architecture with a flexible polyester main chain, which was synthesized via atom transfer radical polymerization (ATRP) with a graft-from approach using a polyester macroinitiator bearing multiple bromo side groups. A comparison with a PMMA homopolymer and a blend PMMA containing a plasticizer revealed that the graft-type PMMA showed much higher elongation without sacrificing the modulus. The ductile nature of the graft-type PMMA was analyzed according to X-ray scattering, scanning electron microscopy observation, and rheological measurement. In the last section, effects of the length of both main chain and graft chain on the tensile properties were investigated.