期刊
CARBOHYDRATE POLYMERS
卷 211, 期 -, 页码 49-56出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2019.01.093
关键词
Coconut coir fibers; TEMPO-mediated oxidation; Cellulose nanofibrils; Biodegradable film; Mechanical properties
资金
- Hainan Provincial Natural Science Foundation [318MS012]
- Hainan University (KYQD) [KYQD(ZR)1717]
- Innovation Project of Science and Technology Association of Hainan Province [HAST201625]
Coconut waste husks were effectively utilized in this study as a promising cellulose source for production of purified coir cellulose (PCC) after multiple treatments, e.g., ultrasonic-assisted solvent immersion, alkaline treatment, bleaching, etc. As to upgrade the self-value of coir cellulose based products and further broaden their applications in light of biorefinery, coir cellulose nanofibrils (CCNF) with an average diameter of 5.6 +/- 1.5 nm were prepared by selection of a milder TEMPO-mediated oxidation system (TEMPO/NaClO/NaClO2, pH= 4.8) accompanied by subsequent ultrasonic treatment. The cellulose nanofibrils were comprehensively characterized in terms of their functional groups, crystallinity, morphology, and thermal stability. The potential reinforcement of CCNFs as a filler for biodegradable PVA based films was investigated and the main properties including tensile strength, elongation at break, and thermal stability of CCNF/PVA composite films were significantly enhanced especially when 3% of CCNF (based on dry film weight) was applied.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据