Bio-composites produced from plant microfiber bundles with a nanometer unit web-like network
Bio-composites produced from plant microfiber bundles with a nanometer unit web-like network
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DOI：
10.1023/b:jmsc.0000016162.43897.0a
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发表时间：
2004-03
影响因子：
4.5
通讯作者：
Hiroyuki Yano;S. Nakahara
中科院分区：
文献类型：
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作者：
Hiroyuki Yano;S. Nakahara
使用具有纳米单元网状网络的植物微纤维束，在不使用粘合剂的情况下获得具有250MPa的弯曲强度的模制产品。由于纸浆纤维具有纳米级的网状结构，它们之间具有很强的相互作用力。换句话说，每个纤维的可能接触点的面积增加，从而可能形成更多的氢键或增加货车范德华力。当氧化木薯淀粉添加量为2%时，屈服应变增加一倍，弯曲强度达到310 MPa。淀粉混合模塑制品具有与镁合金相似的应力应变曲线，并且杨氏模量和弯曲强度值比聚碳酸酯和GFRP（切碎的）高三至四倍。该模塑件具有环保和高强度的特性。
Using plant microfiber bundles with a nanometer unit web-like network, a moulded product with a bending strength of 250 MPa was obtained without the use of binders. High interactive forces seem to be developed between pulp fibers owing to their nanometer unit web-like network. In other words, the area of possible contact points per fiber are increased, so that more hydrogen bonds might be formed or van der Waals forces increased. When 2% oxidized tapioca starch, by weight, was added, the yield strain doubled and the bending strength reached 310 MPa. The starch mixed moulded product had a similar stress strain curve to that for magnesium alloy, and three to four times higher Young's modulus and bending strength values than polycarbonate and GFRP (chopped). The mouldings have a combination of environmentally friendly and high strength properties.