PREPARATION OF TEMPERATURE SENSITIVE ULTRAFINE PARTICLES OF POLY(N-ISOPROPYL ACRYLAMIDE) BY MICROEMULSION POLYMERIZATION

GUO Zhenliang; WANG Jintang; ZHU Hongjun

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PREPARATION OF TEMPERATURE SENSITIVE ULTRAFINE PARTICLES OF POLY(N-ISOPROPYL ACRYLAMIDE) BY MICROEMULSION POLYMERIZATION

Research Article | 更新时间：2021-03-19

- PREPARATION OF TEMPERATURE SENSITIVE ULTRAFINE PARTICLES OF POLY(N-ISOPROPYL ACRYLAMIDE) BY MICROEMULSION POLYMERIZATION
- Acta Polymerica Sinica Issue 4, Pages: 489-493(2001)
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- Published：20 August 2001，
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GUO Zhenliang, WANG Jintang, ZHU Hongjun. PREPARATION OF TEMPERATURE SENSITIVE ULTRAFINE PARTICLES OF POLY(N-ISOPROPYL ACRYLAMIDE) BY MICROEMULSION POLYMERIZATION. [J]. Acta Polymerica Sinica (4):489-493(2001)
DOI：

GUO Zhenliang, WANG Jintang, ZHU Hongjun. PREPARATION OF TEMPERATURE SENSITIVE ULTRAFINE PARTICLES OF POLY(N-ISOPROPYL ACRYLAMIDE) BY MICROEMULSION POLYMERIZATION. [J]. Acta Polymerica Sinica (4):489-493(2001) DOI：

摘要

通过微乳液聚合制备了未交联及交联的聚N-异丙基丙烯酰胺 (L-PNIPAM及CL-PNIPAM)超细微粒.CL-PNIPAM的聚合动力学方程为:Rp=k[M]1.16[E]-1.20 [I]0.53.测得其平均微粒粒径约100nm .用SEM

迎头色谱法测得交联的CL-PNIPAM超细微粒的内比表面积为49.048m2/g

孔径大小为1～10nm .气体吸附量为1784.8cm3/g .用浊度法及目视法研究了其在水介质中的温敏特性

测得其相变温度为31.5℃.

Abstract

The ultrafine particles of linear and cross-linked poly(N-isopropyl acrylamide) were prepared by microemulsion polymerization．The polymerization kinetic equation was derived：Rp=K[M]1.16[E]-1.20[I]0.53．The average diameter of ultrafine particles was 100 nm．The structures of the ultrafine particle were studied by SEM and front chromatography techniques．The specific surface area

pore size and adsorbent maximum were 49.048 m2/g

1～10 nm and l784.8 cm3／g

respectively．The sensitive temperature in water medium was found to be 31.5℃ by turbidimetric method and visual method.

关键词

微乳液聚合超细微粒聚N异丙基丙烯酰胺温度敏感性相变温度

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