Smart copolymeric nanohydrogels: Synthesis, characterization and properties

被引：41

作者：

Guerrero-Ramirez, L. G. ^{[1
]}

Nuno-Donlucas, S. M. ^{[2
]}

Cesteros, L. C. ^{[1
]}

Katime, I. ^{[1
]}

机构：

[1] Univ Pais Vasco UPV EHU, Fac Ciencias & Tecnol, Dept Quim Fis, Grp Nuevos Mat & Espectroscopia Supramol, Bilbao 48940, Spain

[2] Univ Guadalajara, CUCEI, Dept Ingn Quim, Jalisco, Mexico

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2008年 / 112卷 / 03期

关键词：

Quasielastic light scattering; Nanostructures; Chemical synthesis; Differential scanning calorimetry;

D O I：

10.1016/j.matchemphys.2008.07.023

中图分类号：

T [工业技术];

学科分类号：

08 [工学];

摘要：

Novel smart pH-sensitive copolymeric hydrogels have been synthesized by inverse microemulsion polymerization of p-nitro phenol acrylate (NPA) and N-isopropylacrylamide (NIPA) using Aerosol (AOT) as a surfactant and ethylene glycol dimethacrylate (EGDMA) as a crosslinking agent. The polymerization reaction was performed in presence of an oil-soluble salt to reduce the dimensions of the micellar diameter. The average particle diameter and the particle size distribution of the nanogels were measured in acetone at 25 degrees C by quasielastic light scattering (QLS) showing average diameter of 33 mm. The nanogels were characterized by FTIR-ATR, H-1 NMR, UV-vis spectroscopy and DSC. These nanoparticles had shown a selective swelling-collapse response to external pH changes. (C) 2008 Published by Elsevier B.V.

引用

页码：1088 / 1092

页数：5

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