SYNTHESIS AND CHARACTERIZATION OF BLOCK POLYMER OF ALTERNATING COPOLYMERS

被引：0

作者：

韩孝族

张伯兰

张兆谟

张喜田

柳树海

机构：

[1] Changchun Institute of Applied Chemistry

[2] Academia Sinica

[3] Changchun

来源：

Chinese Journal of Polymer Science | 1986年 / 04期

关键词：

MMA; IP; ST; SYNTHESIS AND CHARACTERIZATION OF BLOCK POLYMER OF ALTERNATING COPOLYMERS;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

<正> Block polymer of alternating copolymers, poly[（ST-a-MA）-b（IP-a-MMA）-b-（ST-a-MA）]（I）, has been synthesized in the presence of AlEt1.5Cl1.5,by using Mn2（CO）10/CBr4. initiation system.The GPC results indicate that there is no unreacted prepolymer in I purified by precipitation andfractionation. The study of NMR shows that every block of polymer I has alternating structure. The dynamicmechanical properties of I measured by torsional braid method indicate that the polymer has two Tg s,being 38 and 75℃, respectively. The transmission electron micrographs of I show they have two phasestructure and the domain size increases with increasing molecular weight of hard block.

引用

页码：303 / 308

页数：6