EFFECTS OF CLAY ON THE PREPARATION OF MICROGELS FROM COPOLYMERIZATION OF N-ISOPROPYL ACRYLAMIDE AND t-BUTYL ACRYLATE

ZHANG Qingsong; ZHA Liusheng; MA Jinghong; LIANG Borun

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EFFECTS OF CLAY ON THE PREPARATION OF MICROGELS FROM COPOLYMERIZATION OF N-ISOPROPYL ACRYLAMIDE AND t-BUTYL ACRYLATE

Research Article | 更新时间：2021-03-19

- EFFECTS OF CLAY ON THE PREPARATION OF MICROGELS FROM COPOLYMERIZATION OF N-ISOPROPYL ACRYLAMIDE AND t-BUTYL ACRYLATE
- Acta Polymerica Sinica Issue 7, Pages: 638-643(2007)
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- Published：20 July 2007，
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ZHANG Qingsong, ZHA Liusheng, MA Jinghong, LIANG Borun. EFFECTS OF CLAY ON THE PREPARATION OF MICROGELS FROM COPOLYMERIZATION OF N-ISOPROPYL ACRYLAMIDE AND t-BUTYL ACRYLATE. [J]. Acta Polymerica Sinica (7):638-643(2007)
DOI：

ZHANG Qingsong, ZHA Liusheng, MA Jinghong, LIANG Borun. EFFECTS OF CLAY ON THE PREPARATION OF MICROGELS FROM COPOLYMERIZATION OF N-ISOPROPYL ACRYLAMIDE AND t-BUTYL ACRYLATE. [J]. Acta Polymerica Sinica (7):638-643(2007) DOI：

摘要

以无机粘土（锂蒙脱石）作为物理交联剂

在不加任何乳化剂的条件下

通过无皂乳液聚合制备了一系列粒径在250 nm左右且具有温敏性的N-异丙基丙烯酰胺（NIPAM）和丙烯酸叔丁酯（tBA）共聚微凝胶

并通过傅立叶变换红外光谱、扫描电镜、准静态光散射、X射线衍射仪和差示扫描量热法对所合成微凝胶的化学结构、表面形态和温度敏感性进行了表征.研究表明

粘土起到交联剂的作用；tBA的引入可以调节微凝胶的体积相转变温度；所制得的粘土交联微凝胶具有较好的粒径分布且粒径在140 nm至350 nm之间.

Abstract

Adopting inorganic clay (hectorite) as physical cross-linking agent

a series of temperature-sensitive microgels were synthesized via the surfactant-free emulsion polymerization method.The chemical structure and global shape of the microgels were confirmed by FTIR

XRD and SEM

respectively.The temperature-sensitive behavior of the microgels was investigated by QELS and DSC.It was concluded that the clay used could act as an effective multifunctional cross-linking agent.In addition

the incorporation of tBA comonomer could tune the volume phase transition temperature of the PNIPAM-based microgels and could increase the uniformity of microgel particles.The particle size of the microgels thus prepared ranged from 140 nm to 350 nm.

关键词

粘土N-异丙基丙烯酰胺丙烯酸叔丁酯微凝胶温敏性

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