Improvement of Interfacial Adhesion in Bamboo Polymer Composite Enhanced with Micro-Fibrillated Cellulose
Improvement of Interfacial Adhesion in Bamboo Polymer Composite Enhanced with Micro-Fibrillated Cellulose
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DOI：
10.1299/jsmea.48.199
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发表时间：
2005-10
期刊：
影响因子：
--
通讯作者：
K. Okubo;T. Fujii;N. Yamashita
中科院分区：
文献类型：
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作者：
K. Okubo;T. Fujii;N. Yamashita
目前研究提出了一种改善聚乳酸基竹纤维复合材料力学性能的有效方法。从木浆中提取的市售微纤化纤维素（MFC）被用作复合材料的增强剂。采用蒸汽爆破法提取竹纤维，并在水中摩擦去除木质部（软壁细胞）。将液体基MFC、PLA和竹纤维在水中混合几分钟，在真空压力下进行过滤。为了制造复合材料，剩下的薄片在干燥后被热压。即使在PLA/BF复合材料中添加10%的MFC，复合材料的三点抗弯强度和I型断裂韧性也有显著提高。如果在竹纤维复合材料中加入少量的MFC，缠绕的MFC纤维会阻止竹纤维与基体界面上微裂纹的生长。
Current study presents one of effective techniques to improve mechanical properties of PLA (Poly-Lactic Acid)-based bamboo fiber composite. Commercially available Micro-Fibrillated Cellulose (MFC) obtained from wood pulp was applied as an enhancer to the composite. The bamboo fibers were extracted by steam explosion method and they were also rubbed in water to remove xylem (soft-wall cells). The liquid-based MFC, PLA and the bamboo fiber were mixed in water for several minutes and they were filtrated under vacuum pressure. To fabricate the composite, remained sheets were then hot pressed after dry. Three-point bending strength and Mode I fracture toughness of the composite were significantly improved, even when 10% of the MFC was added into the PLA/BF composite in weight. If small amount of MFC added into the bamboo fiber composite, tangled MFC fibers prevented the growth of micro crack along the interface between bamboo fiber and matrix.