Synthesis of MCPU-PMMA hybrid emulsion through seeded emulsion polymerization

鲍利红 兰云军 张淑芬

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Synthesis of MCPU-PMMA hybrid emulsion through seeded emulsion polymerization

更新时间：2025-12-10

- Synthesis of MCPU-PMMA hybrid emulsion through seeded emulsion polymerization
- CIESC Journal Issue 3, (2007)
- 作者机构：
  
  1. 大连理工大学精细化工国家重点实验室
  2. 温州大学浙江省皮革工程重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：05 March 2007，
  
  Published：05 March 2007
- 稿件说明：
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鲍利红兰云军张淑芬. Synthesis of MCPU-PMMA hybrid emulsion through seeded emulsion polymerization[J]. CIESC Journal, 2007, (3).
DOI：

鲍利红兰云军张淑芬. Synthesis of MCPU-PMMA hybrid emulsion through seeded emulsion polymerization[J]. CIESC Journal, 2007, (3). DOI：

摘要

本文采用改性蓖麻油合成了软段中含不饱和双键的阴离子聚氨酯水分散液（MCPU），将其作为可聚合乳化剂和种子成分同甲基丙烯酸甲酯（MMA）进行共聚，制得了MCPU－PMMA复合乳液。1HNMR谱图显示MCPU中含有双键结构

共聚后双键消失。通过考察单体转化率和复合乳液平均粒径、凝胶量及成膜耐水及甲苯性探讨了影响种子乳液聚合的多种因素：采用过硫酸钾作为引发剂，单体转化率高，乳液粒径小，成膜耐水及甲苯性好；反应的表观活化能Ea为164.86kJ/mol，反应温度控制在70℃较适宜；聚合反应速率Rp∝［I］1.0856，引发剂用量宜控制在聚合有效组份总质量的0.5％。

Abstract

A kind of anionic micro-cellular polyurethane (MCPU)dispersion containing unsaturated double bonds in the soft segments was synthesized with modified castor oil

and it was used as polymerizable emulsifier and seed composition for emulsion copolymerization of MCPU and methyl methacrylate (MMA).1H NMR spectrum showed that double bonds existing in MCPU disappeared after it was copolymerized with MMA.Various factors that affect the seeded emulsion copolymerization were investigated through measuring the conversion of monomers

average particle size and amount of agglomeration

water and toluene resistance of the film.The results showed that when taking potassium persulfate as initiator

the emulsion copolymerization had higher conversion

the average particle size was smaller and the film had better water and toluene resistance.It was proper to keep the reaction temperature at 70℃.The activation energy of the copolymerization was 164.86 kJ·mol-1.Copolymerization rate Rp∝［I］1.0856

and the dosage of initiator should be 0.5% of the total polymerizable composition.

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