期刊论文

Preparation and Characterization of Lactic Acid Grafted Bamboo Fiber/Polylactic Acid Composites

中文

材料导报

1005-023X

2020

34

20

20171-20176,20181

10.11896/cldb.19100079

中国博士后科学基金特别资助项目(2017T100615) 国家自然科学基金青年项目(31600460) 国家级大学生研究性学习与创新性实验计划项目(201810538006) 湖湘青年英才计划(2019RS2040) 湖南省教育厅科学研究重点项目(18A157)。

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以乳酸接枝竹纤维和聚乳酸为原料,甘油、柠檬酸酯和甲酰胺(质量比为2 ∶ 3 ∶ 1)的复配物为增塑剂,制得乳酸接枝竹纤维/聚乳酸( LA-g-BF/ PLA)复合材料。探讨了残余乳酸、乳酸接枝竹纤维/聚乳酸比例、增塑剂用量、热压温度和热压时间对复合材料力学性能及耐水性能的影响。同时,采用X射线衍射( XRD)仪、差示扫描量热( DSC)仪和热重分析( TGA)仪对复合材料进行了表征。结果表明,去除乳酸接枝竹纤维中的残余乳酸后,当乳酸接枝竹纤维与聚乳酸的质量比为3 ∶ 7、增塑剂用量为10%、热压温度为170 ℃、热压时间为6 min时,LA-g-BF/PLA复合材料的综合性能最佳。随着乳酸接枝竹纤维与聚乳酸质量比的增大,复...

Lactic acid grafted bamboo fiber/polylactic acid (LA-g-BF/PLA) composites were prepared by using lactic acid grafted bamboo fiber and polylactic acid as raw materials, glycerol, citrate and formamide at a mass ratio of 2: 3: 1 as plasticizers. The effects of residual lactic acid, proportion of lactic acid grafted bamboo fiber/polylactic acid, amount of plasticizer, hot pressing temperature and time on mechanical properties and water resistance of the composites were discussed. The composites were characterized by X-ray diffraction (XRD), differ...