| Literature DB >> 20015636 |
Dagang Liu1, Tuhua Zhong, Peter R Chang, Kaifu Li, Qinglin Wu.
Abstract
Using a method of combined HNO(3)-KClO(3) treatment and sulfuric acid hydrolysis, bamboo cellulose crystals (BCCs) were prepared and used to reinforce glycerol plasticized starch. The structure and morphology of BCCs were investigated using X-ray diffraction, electron microscopy, and solid-state (13)C NMR. Results showed that BCCs were of typical cellulose I structure, and the morphology was dependent on its concentration in the suspension. BCC of 50-100 nm were assembled into leaf nervations at low concentration (i.e. 0.1 wt.% of solids), but congregated into a micro-sized "flower" geometry at high concentration (i.e. 10.0 wt.% of solids). Tensile strength and Young's modulus of the starch/BCC composite films (SBC) were enhanced by the incorporation of the crystals due to reinforcement of BCCs and reduction of water uptake. BCCs at the optimal 8% loading level exhibited a higher reinforcing efficiency for plasticized starch plastic than any other loading level. Crown Copyright 2009. Published by Elsevier Ltd. All rights reserved.Entities:
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Year: 2009 PMID： 20015636 DOI： 10.1016/j.biortech.2009.11.058
Source DB: PubMed Journal: Bioresour Technol ISSN： 0960-8524 Impact factor: 9.642