文献类型：期刊文献

英文题名：Fabrication of ordered lamellar polyacrylamide/P123 composite membranes via solvent-evaporation-induced self-assembly

作者：Tang, Jing;Fan, Yubing;Hu, Jun[1];Liu, Honglai

机构：[1]E China Univ Sci & Technol, Adv Mat Lab, Shanghai 200237, Peoples R China; E China Univ Sci & Technol, Dept Chem, Shanghai 200237, Peoples R China

年份：2009

卷号：331

期号：1

起止页码：191

外文期刊名：JOURNAL OF COLLOID AND INTERFACE SCIENCE

收录：;EI(收录号：20090211855257);WOS:【SCI-EXPANDED(收录号:WOS:000263038100030)】；

基金：This work was supported by the National Natural Science Foundation of China (Nos. 20776045, 20736002), the Program for Changjiang Scholars and Innovative Research Team in University (No. IRT0721), the 111 Project (No. B08021), and the Natural Science Foundation of Shanghai Municipal Science and Technology Commission (No. 07ZR14029).

语种：英文

外文关键词：Polyacrylamide; P123; Mesostructure; Membrane; Evaporation-induced self-assembly

摘要：A series of composite membranes of poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide) (P123) and polyacrylamide (PAM) have been successfully prepared by solvent-evaporation-induced self-assembly. Micellar self-assembly of P123 in aqueous solution plays an important role as a model for the formation of composite membranes. XRD patterns show that the synthesized compositions are in a lamellar mesostructure. The lattice spacing changes with P123 concentration: the higher the concentration of P123, the smaller the lattice spacing of the composite membranes. The data on sizes and zeta potentials of pure p-PAM aggregates, P123 micelles, p-PAM/P123 mixtures, and c-PAM/P123 composite aggregates suggest that interactions take place between PAM and P123 aggregations. The fabrication of the lamellar membranes via water-evaporation-induced self-assembly is recorded by fluorescent emission spectroscopy and dynamic light-scattering methods. Based on analysis of the results, a tentative mechanism for the formation of the lamellar membranes has been proposed. (C) 2008 Elsevier Inc. All rights reserved.