Cellulose nanocrystal-filled carboxymethyl cellulose nanocomposites

被引:118
作者
Choi, YJ
Simonsen, J [1 ]
机构
[1] Oregon State Univ, Dept Chem Engn, Corvallis, OR 97331 USA
[2] Oregon State Univ, Dept Wood Sci & Engn, Corvallis, OR 97331 USA
关键词
cellulose nanocrystal; carboxymethyl cellulose; nanocomposite;
D O I
10.1166/jnn.2006.132
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Polymer nanocomposites are one of the important application areas for nanotechnology. Naturally derived organic nanophase materials are of special interest in the case of polymer nanocomposites. Carboxymethyl cellulose is a polyelectrolyte derived from natural materials. It has been extensively studied as a hydrogel polymer. Methods to modify the mechanical properties of gels and films made from CMC are of interest in our lab and in the commercial marketplace. The effect of nano-sized fillers on the properties of CMC-based composites is of interest in the development of novel or improved applications for hydrogel polymers in general and CMC in particular. This project investigated cellulose nanocrystals (CNXLs) as a filler in CMC and compared the effects to microcrystalline cellulose (MCC). The composite material was composed of CMC, MCC or CNXL, with glycerin as a plasticizer. CNXL and MCC concentrations ranged from 5% to 30%. Glycerin concentrations were kept constant at 10%. CNXLs improved the strength and stiffness of the resulting composite compared to MCC. In addition, a simple heat treatment was found to render the nanocomposite water resistant.
引用
收藏
页码:633 / 639
页数:7
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