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首页> 外文期刊>Journal of Applied Polymer Science >Effects of poly(dimethyl siloxane) on the water absorption and natural degradation of poly(lactic acid)/oil-palm empty-fruit-bunch fiber biocomposites
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Effects of poly(dimethyl siloxane) on the water absorption and natural degradation of poly(lactic acid)/oil-palm empty-fruit-bunch fiber biocomposites

机译：聚二甲基硅氧烷对聚乳酸/油棕空果充填纤维生物复合材料的吸水和自然降解的影响

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摘要

Composites were fabricated with poly(lactic acid) and oil-palm empty-fruit-bunch (EFB) fibers with extrusion; this was followed by an injection-molding technique. Before compounding, the surface of the fiber was modified through ultrasound and poly(dimethyl siloxane) (PDMS). The influences of the ultrasound and PDMS on the water absorption and biodegradability of the composites were investigated. Additionally, the composites were buried under soil for 6 months, and their biodegradability was assessed through different characterization techniques, such as tensile testing and weight loss and diffussability measurement. The changes on the surface of the fibers due to treatment were examined by scanning electron microscopy analysis, and the influences on the biodegradability of the composites were observed. Functional group analysis and possible changes before and after degradation were also examined by a Fourier transform infrared spectrophotometric technique. The results analyses revealed that the treatment of fibers improved the density of the fibers and reduced the water uptake of the composites. The overall weight loss due to soil burial testing was found to be maximum for the untreated-fiber-based composites (6.8%), whereas the ultrasound- and silane-treated composites showed the minimum value of weight loss (3.7%). The deterioration of the tensile strength due to degradation was found to be at a maximum for the untreated-fiber-based composite (27%), whereas the ultrasound- and silane-treated-fiber-based composites showed a minimum value of 8%. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42784.
机译：复合材料是用聚乳酸和油棕空果充填（EFB）纤维挤出制成的。然后是注塑技术。在复合之前，通过超声和​​聚二甲基硅氧烷（PDMS）对纤维表面进行改性。研究了超声和PDMS对复合材料吸水率和生物降解性的影响。此外，将复合材料埋入土壤中6个月，并通过不同的表征技术（例如拉伸测试，重量损失和扩散性测量）评估其生物降解性。通过扫描电子显微镜分析检查了由于处理引起的纤维表面的变化，并观察了对复合物的生物降解性的影响。还通过傅立叶变换红外分光光度法检查了官能团分析以及降解前后的可能变化。结果分析表明，纤维的处理提高了纤维的密度并降低了复合材料的吸水率。对于未处理的纤维基复合材料，由于土壤埋藏测试而导致的总重量损失最大（6.8％），而经超声波和硅烷处理的复合材料则显示出最小的重量损失值（3.7％）。对于未处理的纤维基复合材料，由于降解引起的拉伸强度的劣化最大（27％），而超声和硅烷处理的纤维基复合材料的最小值为8％。 （c）2015 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，42784。

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