Fabrication of complex microcapsules containing poly(allylamine)-g-poly(N-isopropylacrylamide) and their thermal responsivity

被引：9

作者：

Wang, Feng

Zhu, Yi

Gao, Changyou ^{[1
]}

机构：

[1] Zhejiang Univ, Key Lab Macromol Synth & Functionalizat, Minist Educ, Hangzhou 310027, Zhejiang, Peoples R China

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2009年 / 349卷 / 1-3期

关键词：

Microcapsules; Thermal responsive; Coacervation; Polyelectrolytes; POLYELECTROLYTE MICROCAPSULES; N-ISOPROPYLACRYLAMIDE; PARTICLE FORMATION; PHASE-SEPARATION; CROSS-LINKING; CAPSULES; MULTILAYERS; COACERVATION; PERMEABILITY; POLYMERS;

D O I：

10.1016/j.colsurfa.2009.07.051

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Complex microcapsules containing thermo-responsive poly(allylamine)-g-poly(N-isopropylacrylamide) (PAH-g-PNIPAAm) were fabricated by adsorbing one layer of PAH-g-PNIPAAm onto CaCO3 microparticles doped with poly(styrene sulfonate) sodium salt (PSS), followed by dissolution of the CaCO3 particles. The complex capsules were characterized by confocal microscopy, scanning electron microscopy, transmission electron microscopy and atomic force microscopy. The existence of PAH-g-PNIPAAm in the complex microcapsules was confirmed by FTIR spectroscopy, and its thermo-responsive property was studied by H-1 NMR. The capsules showed different morphologies when dried at 25 and 50 degrees C, as well as enhanced stability at 40 degrees C in alkaline solution due to the additional hydrophobic interaction. (C) 2009 Elsevier B. V. All rights reserved.

引用

页码：55 / 60

页数：6

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