Chunqing ZHANG
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PS-b-PEO为分散剂的苯乙烯悬浮聚合
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Indexed by:期刊论文

Date of Publication:2017-05-25

Journal:合成树脂及塑料

Included Journals:Scopus

Volume:34

Issue:3

Page Number:1-5

ISSN No.:1002-1396

Key Words:聚苯乙烯-聚环氧乙烷嵌段共聚物;分散剂;活性负离子聚合

Abstract:采用活性负离子聚合技术设计并合成了聚苯乙烯(PS)-聚环氧乙烷(PEO)嵌段共聚物(PS-b-PEO),并以此为分散剂进行苯乙烯悬浮聚合.分析了PS-b-PEO中PS嵌段的相对分子质量及PEO嵌段的质量分数,并考察了PS-b-PEO中PEO嵌段的质量分数、用量(PS-b-PEO中PEO嵌段占苯乙烯单体的质量分数)和搅拌速率对苯乙烯悬浮聚合颗粒特征的影响.结果表明:成功合成了PS嵌段相对分子质量为5000,PEO嵌段质量分数为3.5%~27.3%的PS-b-PEO;PEO嵌段用量相同时,随着PEO嵌段质量分数的增加,苯乙烯悬浮聚合得到的PS颗粒粒径逐渐增大且分布变宽;以PEO嵌段质量分数为5.0%的PS-b-PEO为分散剂时,PEO嵌段用量由0.05%增加到1.20%,PS颗粒粒径逐渐减小且分布变窄;搅拌速率由220 r/min增加到570 r/min,悬浮聚合仍能稳定进行且PS颗粒粒径减小.

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Gender:Male

Alma Mater:Dalian University of Technology

Degree:Doctoral Degree

School/Department:Dept. of Polymer Materials

Discipline:Polymer Materials. Polymer Chemistry and Physics. Chemistry and Chemical Engineering of Functional

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