Influence of Compatibilizing Agent Molecular Structure on the Mechanical Properties of Phosphate Glass Fiber-Reinforced PLA Composites
Influence of Compatibilizing Agent Molecular Structure on the Mechanical Properties of Phosphate Glass Fiber-Reinforced PLA Composites
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DOI：
10.1002/pola.24086
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发表时间：
2010-07-15
影响因子：
--
通讯作者：
Irvine, Derek J.
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文献类型：
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作者：
Haque, Papia;Barker, Ian A.;Irvine, Derek J.
研究了8种相容剂对磷酸盐玻璃纤维/聚乳酸（PLA）基体界面质量的影响。在通过浸涂施加试剂之后，将纤维索氏提取以除去任何未反应的增容剂。为了评估界面质量，单纤维拉伸试验处理的纤维和单纤维复合材料（SFC）的界面剪切强度（IFSS）进行了评估。在测试的试剂中，甘油-2-磷酸五水二钠（GP）和具有钠盐末端基团的低分子量聚乳酸（PLA-Na）显示出最高的IFSS值，显着高于对照组。具有羧酸端基和阿仑膦酸钠三水合物的低聚PLA也显示出比对照纤维的改善。这些单纤维复合材料的水解降解在37 ℃的水中研究了7天，在所有情况下观察到IFSS的显著降低，处理过的样品下降到对照的水平。TGA和XPS分析表明，GP和PLA-Na已成功地应用于纤维表面。(C)2010 Wiley Periodicals，Inc.聚合物科学杂志A部分：聚合物化学48：3082-3094，2010年
Eight compatibilizing agents were studied to investigate their effect on the quality of the interface between a phosphate glass fiber and a poly(lactic acid) (PLA) matrix. After application of the agents via dip-coating, the fibers were Soxhlet extracted to remove any unreacted compatibilizer. To assess the interface quality, single fiber tensile tests of treated fibers and interfacial shear strengths (IFSS) of single fiber composites (SFC) were assessed. Of the agents tested, Glycerol-2-phosphate disodium pentahydrate (GP) and low molecular weight PLA with a sodium salt terminal group (PLA-Na) showed the highest IFSS values, which were significantly higher than those of the control. Oligomeric PLA with a carboxylic acid end group and alendronate sodium trihydrate also showed an improvement over the control fibers. The hydrolytic degradation of these single fiber composites was studied over 7 days in water at 37 degrees C and a significant decrease in IFSS was observed in all cases, with the treated samples dropping to the level of the control. TGA and XPS analysis of the sized fibers showed that GP and PLA-Na had been applied successfully to the fiber surface. (C) 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 48: 3082-3094, 2010