期刊
CARBOHYDRATE POLYMERS
卷 76, 期 3, 页码 437-442出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2008.11.006
关键词
Cellulose fibers; Oxypropylation; Self-reinforced composites
资金
- FAPESP
- CAPES
The in-depth oxypropylation of different types of cellulose fibers, namely Avicel, Rayon, Kraft, and Filter Paper, was investigated. New biphasic mono-component materials were obtained, which could be hot-pressed to form films of cellulose fibers dispersed into a thermoplastic matrix. The success of this chemical modification was assessed by FTIR spectroscopy, X-ray diffraction, scanning electron microscopy. differential scanning calorimetry, thermogravimetric analysis and contact angle measurements. The optimization of this process led to the establishment of the optimal molar ratio between the cellulose CH groups and propylene oxide, which varied as a function of the specific morphology of the fibers. (C) 2008 Elsevier Ltd. All rights reserved.
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