期刊
EUROPEAN POLYMER JOURNAL
卷 44, 期 9, 页码 2830-2837出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.eurpolymj.2008.06.010
关键词
Atom transfer radical polymerization (ATRP); Amphotropic polymer; Cellulose nanocrystal; Azo polymers; Liquid-crystalline polymers (LCP)
资金
- New Century Excellent Talents in University [NCET-05-0707]
- Scientific Research Fund of Hunan Provincial Education Department [06A068]
- Cultivation Found of the Key Scientific and Technical Innovation Project
- Ministry of Education of China [207075]
A novel amphotropic polymer which could exhibit liquid-crystalline behavior both in the solvent and in the heating process was synthesized through azo polymers grafting from cellulose nanocrystals (CNCs). The CNCs, prepared by acid hydrolysis of filter paper, were characterized by Atomic Force Microscopy (AFM). Poly(6-[4-(4-methoxyphenylazo)phenoxy] hexyl methacrylate)(PMMAZO), which was a liquid-crystalline polymers (LCP), was successfully to graft from CNC via Atom transfer radical polymerization (ATRP). The structure and thermal properties of the PMMAZO-grafted CNC were investigated using Fourier transform infrared spectroscopy (FT-IR) and thermogravimetric analyses (TGA). Its phase structures and transitions were studied by differential scanning calorimetry, (DSC) and polarized optical microscopy (POM). The experimental results showed that the PMMAZO-grafted CNC exhibited both types of liquid crystal formation, thermotropic and lyotropic. (C) 2008 Elsevier Ltd. All rights reserved.
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