COMPOSITION VARIATION OF POLYMER COMPOSITE PARTICLES IN STYRENE-METHYL METHACRYLATE SUSPENSION-EMULSIONCOMBINED POLYMERIZATION

ZHANG Zhenqian; BAO Yongzhong; HUANG Zhiming; WENG Zhixue; PAN Zuren

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COMPOSITION VARIATION OF POLYMER COMPOSITE PARTICLES IN STYRENE-METHYL METHACRYLATE SUSPENSION-EMULSIONCOMBINED POLYMERIZATION

Research Article | 更新时间：2021-03-19

- COMPOSITION VARIATION OF POLYMER COMPOSITE PARTICLES IN STYRENE-METHYL METHACRYLATE SUSPENSION-EMULSIONCOMBINED POLYMERIZATION
- Acta Polymerica Sinica Issue 3, Pages: 382-386(2006)
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- Published：20 June 2006，
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ZHANG Zhenqian, BAO Yongzhong, HUANG Zhiming, WENG Zhixue, PAN Zuren. COMPOSITION VARIATION OF POLYMER COMPOSITE PARTICLES IN STYRENE-METHYL METHACRYLATE SUSPENSION-EMULSIONCOMBINED POLYMERIZATION. [J]. Acta Polymerica Sinica (3):382-386(2006)
DOI：

ZHANG Zhenqian, BAO Yongzhong, HUANG Zhiming, WENG Zhixue, PAN Zuren. COMPOSITION VARIATION OF POLYMER COMPOSITE PARTICLES IN STYRENE-METHYL METHACRYLATE SUSPENSION-EMULSIONCOMBINED POLYMERIZATION. [J]. Acta Polymerica Sinica (3):382-386(2006) DOI：

摘要

采用苯乙烯(St)悬浮聚合过程中滴加甲基丙烯酸甲酯(MMA)乳液聚合组分

悬浮乳液复合聚合(SECP)方法

制备大粒径聚苯乙烯聚甲基丙烯酸甲酯(PS-PMMA)复合粒子.采用FTIR、1H-NMR、13C-NMR分析方法

研究SECP各个时期复合粒子中MMA/St链节摩尔比

发现悬浮粒子中MMA/St链节摩尔比逐渐增大

而PMMA乳胶粒子中逐渐减少

表明悬浮相和乳液相间存在物质传递过程.悬浮粒子中MMA链节质量与MMA总投料质量比主要由乳胶粒子生成速率和乳胶粒子向悬浮粒子凝聚速率决定.最终得到的复合粒子除含PS和PMMA均聚物外

还含少量MMA/St共聚物.

Abstract

Suspension—emulsion combined polymerization(SECP)process

in which methyl methacrylate(MMA) emulsion pdymefization constituents(EPC)were drop—wisely added to styrene(St)suspension polymerization system

was applied to prepare polystyrene—poly(methyl methacrylate)(PS—PMMA)cole-shell composite particles with a great size The composition of these composite particles was analyzed by FTIR．extraction．1H-NMR and13C-NMR methods．It was found that the molar ratio of MMA／St units in composite particles increased and the content of PMMA latex particles decreased with the increasing of polymerization time after the addition of EPC．So

it was evidenced that PMMA latex particles would coagulate with PS suspension particles in SECP polymerization and a transfer process existed between the two kinds of particles after the coagulation The polymeric composite particles were composed of PS

PMMA and MMA—St copolymer．

关键词

悬浮-乳液复合聚合聚苯乙烯聚甲基丙烯酸甲酯复合粒子组成

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Institute of Polymer Science,School of Chemistry and Chemical Engineering Zhongshan University

中山大学化学与化学工程学院高分子研究所

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