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| Preparation and Properties of Bagasse Pulp Fiber-reinforced PLA Composites |
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| DOI：10.11981/j.issn.1000-6842.2015.03.36 |
| Key Words:bagasse pulp fibers； PLA； hot-pressing temperature； NaOH modification； mechanical properties |
| Fund Project:湖南省自然科学省市联合基金项目(S2014J512J)；湖南省高校创新平台开放基金项目(13K071)。 |
| Author Name | Affiliation | | 符 彬 | 中南林业科技大学,湖南长沙,410004 | | 郑 霞* | 中南林业科技大学,湖南长沙,410004 | | 潘亚鸽 | 中南林业科技大学,湖南长沙,410004 | | 朱凌波 | 中南林业科技大学,湖南长沙,410004 | | 唐 钱 | 中南林业科技大学,湖南长沙,410004 | | 陈 茂 | 中南林业科技大学,湖南长沙,410004 |
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| Abstract: |
| Bagasse pulp fiber-reinforced PLA composites was fabricated with bagasse pulp fibers and PLA, effects of mass fraction of bagasse fibers, modifier (NaOH) concentrations, as well as the hot-pressing temperature on composites’mechanical properties were investigated. The results showed that bagasse fibers could be uniformly mixed with PLA when its mass fraction was 30%, treatment of bagasse fibers with 5% NaOH could dissolve the hemicellulose and pectin of the bagasse fibers which led to further refine bagasse fibers, and increased its specific surface area, and finally improved composites’ mechanical properties effectively. At 170℃ the flowability of PLA was very good to help improve the bagasse fibers dispersion in PLA uniformly, the bagasse fibers and PLA would not be decomposed at that temperature. The impact and tensile properties of the composites reached the maximum values of 44.6 MPa and 10.5 MJ/m2 respectively under such optimal preparation conditions. |
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