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首页> 外文会议>49th International wood composites symposium >10. Hydrophobization of cellulose powder by soybean oil and its effects on the physical properties of polypropylene/cellulose composites
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10. Hydrophobization of cellulose powder by soybean oil and its effects on the physical properties of polypropylene/cellulose composites

机译：10.大豆油对纤维素粉末的疏水化作用及其对聚丙烯/纤维素复合材料物理性能的影响

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摘要

Cellulose powders and fibers have attracted lots of interest as fillers in producing green polymer composites because they are natural, biodegradable, eco-friendly and economic. However, their compatibility to commodity polymers like PE and PP is very low because of their inherent hydrophilicity. So, in this study, to improve the interfacial bonding strength between cellulose powder and a hydrophobic PP matrix, the surface hydrophobization of the cellulose powder by soybean oil was carried out via a simple trans-esterification reaction procedure. Weight change measurement, FTIR spectroscopy and compatibility test were performed to analyze the hydrophobization of the cellulose powder quantitatively and qualitatively. By changing hydrophobization condition, the attached soybean oil content to the cellulose powder was changed from 8.0% to 57.8%. PP composites with 20% of each hydrophobized cellulose powder were prepared respectively by melt blending followed by compression molding. The mechanical properties of the PP composites were investigated by UTM and izod impact tester. The PP composite with the hydrophobized cellulose powder of the attached soybean oil content of 29.6% showed maximum tensile strength and modulus. The SEM images for the fracture surfaces of the composites showed that the hydrophobization induced much stronger interfacial bonding between the PP matrix and the cellulose powder.
机译：纤维素粉末和纤维作为填料在生产绿色聚合物复合材料方面引起了广泛的兴趣，因为它们天然，可生物降解，生态友好且经济。然而，由于其固有的亲水性，它们与诸如PE和PP的商品聚合物的相容性非常低。因此，在本研究中，为了提高纤维素粉末与疏水性PP基体之间的界面结合强度，通过简单的酯交换反应程序对大豆粉末对纤维素粉末进行了表面疏水化处理。进行了重量变化测量，FTIR光谱和相容性测试，以定量和定性地分析纤维素粉末的疏水化作用。通过改变疏水化条件，纤维素粉末上附着的大豆油含量从8.0％改变为57.8％。通过熔融共混然后压缩成型分别制备具有20％的每种疏水化纤维素粉末的PP复合材料。通过UTM和izod冲击测试仪研究了PP复合材料的机械性能。附有大豆油含量为29.6％的疏水化纤维素粉末的PP复合材料显示出最大的拉伸强度和模量。复合材料断裂表面的SEM图像表明，疏水化作用导致PP基体与纤维素粉末之间的界面结合力强得多。

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  • 会议地点 Seattle WA(US)
  • 作者

    Dae Su Kim; Song Yi Jang;

  • 作者单位

    Department of Chemical Engineering, Chungbuk National University1 Chungdaero, Seowongu, Cheongju, Chungbuk 362-763, Korea;

    Department of Chemical Engineering, Chungbuk National University1 Chungdaero, Seowongu, Cheongju, Chungbuk 362-763, Korea;

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