Preparation of Poly (AAm-DVB) Microspheres by Precipitation Polymerization in Ethanol

Jie HE; Xiang-an YUE; Yu SUN; Xin TAN

doi:10.14028/j.cnki.1003-3726.2015.06.006

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Preparation of Poly (AAm-DVB) Microspheres by Precipitation Polymerization in Ethanol

更新时间：2022-09-18

- Preparation of Poly (AAm-DVB) Microspheres by Precipitation Polymerization in Ethanol
- Polymer Bulletin Vol. 28, Issue 6, Pages: 44-49(2015)
- 作者机构：
  
  中国石油大学(北京)石油工程教育部重点实验室，北京　102249
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2015.06.006
  CLC：
- Published：2015-06，
  
  Received：27 January 2015，
  
  Revised：19 March 2015，
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Jie HE, Xiang-an YUE, Yu SUN, Xin TAN. Preparation of Poly (AAm-DVB) Microspheres by Precipitation Polymerization in Ethanol. [J]. Polymer Bulletin 28(6):44-49(2015)
DOI：

Jie HE, Xiang-an YUE, Yu SUN, Xin TAN. Preparation of Poly (AAm-DVB) Microspheres by Precipitation Polymerization in Ethanol. [J]. Polymer Bulletin 28(6):44-49(2015) DOI： 10.14028/j.cnki.1003-3726.2015.06.006.

摘要

以偶氮二异丁腈为引发剂

采用沉淀聚合法在低毒性溶剂乙醇中制备出了平均粒径在2.933µm〜 4. 742µm之间的聚(丙烯酰胺-二乙烯基苯)微球。通过粒度分析、电镜扫描、热重分析

研究不同因素对反应产物的形态和耐温性的影响发现:只有当温度为70℃

交联单体二乙烯基苯的加量控制在25 %〜50%之间

单体浓度低于4%时

反应才可得到形状规则的微球;增加单体中二乙烯基苯的含量有利于增加微球的耐温性

微球耐温可高达320℃;延长反应时间有利于增大微球粒径

增加引发剂用量有利于降低微球粒径

但二者均能增加微球的产率。

Abstract

Uniform poly (AAm-DVB) microspheres with the average diameters varying from 2. 933µm to 4. 74µm were prepared in ethanol by precipitation polymerization with AIBN as the initiator. The parameters which influence both the product morphology and temperature-resistance were investigated by particle size analysis

scanning electron microscope and thermogravimetric analysis. The results show that only control the temperature at 70℃

the addition of DVB in 25% 〜 50% and the addition of monomers below 4%

uniform microspheres could be obtained; increasing the DVB concentration in monomers

the temperature-resistance of microspheres is enhanced and which could be as high as 320℃. The average diameters of microspheres increase with the prolonging in polymerization time while decrease with the increasing in initiator concentration. However

both the prolonging in polymerization time and the increasing in initiator concentration are favorable to the increase of yield.

关键词

沉淀聚合乙醇丙烯酰胺微球耐温性

Keywords

Precipitation polymerizationEthanolAcrylamideMicrospheresTemperature-resistance

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