文献类型：期刊文献

英文题名：Interactions between surfactants and polymer-grafted nanocrystalline cellulose

作者：Peng, Baoliang[1,2];Han, Xia[2];Liu, Honglai[2];Berry, Richard C.[3];Tam, Kam C.[1]

机构：[1]Univ Waterloo, Waterloo Inst Nanotechnol, Dept Chem Engn, Waterloo, ON N2L 3G1, Canada;[2]E China Univ Sci & Technol, Dept Chem, Shanghai 200237, Peoples R China;[3]CelluForce Inc, Montreal, PQ H3A 1K2, Canada

年份：2013

卷号：421

起止页码：142

外文期刊名：COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS

收录：;EI(收录号：20130615998582);WOS:【SCI-EXPANDED(收录号:WOS:000316369800017)】；

基金：Baoliang Peng thanks the China Scholarship Council for supporting his research at University of Waterloo, Canada. The authors would also like to acknowledge FP Innovations and CelluForce for the supply of NCC for this research. This work is supported by NSERC, CFI Canada, National Natural Science Foundation of China (No. 21176065), 111 Project of Ministry of Education of China (No. B08021) and the Fundamental Research Funds for the Central Universities of China.

语种：英文

外文关键词：Nanocrystalline cellulose; Surfactant; Interactions; Isothermal titration calorimetry

摘要：The interactions between surfactants and nanocrystalline cellulose (NCC) grafted with a 600 Da polypropylene glycol (M600) were investigated by isothermal titration calorimetry (ITC) and nuclear magnetic resonance spectroscopy (NMR). The M600-grafted NCC prepared by reacting carboxylated NCC with amine-terminated M600 via a peptide coupling reaction, which was confirmed by infrared spectroscopy and transmission electron microscopy (TEM). Three types of surfactants with dodecyl alkyl chain and different head groups, namely cationic dodecyltrimethylammonium bromide (DoTAB), anionic sodium dodecyl sulfate (SDS), and nonionic poly (ethylene glycol) dodecyl ether (Brij 30) were studied. Strong electrostatic interaction was only observed between M600-grafted NCC and DoTAB, due to the binding of opposite charges. Hydrophobic interaction was displayed for the M600-grafted NCC/SDS system, and negligible interaction between M600-grafted NCC and Brij 30 was observed. Physical mechanisms describing the interactions of cationic, anionic and nonionic surfactants and M600-grafted NCC are proposed. (C) 2013 Elsevier B.V. All rights reserved.