林业工程学报2018，Vol.3Issue(1)：77-82,6.DOI:10.13360/j.issn.2096-1359.2018.01.013
竹纤维/聚乳酸可降解复合材料的增塑改性
Plasticization of bamboo fiber/polylactic acid degradable composite
摘要
Abstract
By using bamboo fiber and polylactic acid ( PLA) as raw materials, and ethylene glycol, glycerin, polyeth-ylene glycol 400, urea, formamide and citric acid ester as plasticizers, bamboo fiber/PLA biodegradable composites were prepared by the melt blending method. The effects of unitary plasticization, 2-element compound plasticization and 3-element compound plasticization on the tensile strength, flexural strength, elongation at break and water resist-ance of bamboo fiber/PLA composites were investigated. The experimental results showed that the plasticizing effects of different plasticizers on bamboo fiber/PLA composites were different. The tensile strength and flexural strength of glycerin plasticized composites was the greatest, the elongation at break of formamide plasticized composites was the highest, and the citric acid ester plasticized composites had the best water resistance. The 2-element compound plasti-cization can achieve synergistic plasticization effect. Bamboo fiber/PLA composites compound plasticized by glycerol/citric acid had the greatest tensile strength and flexural strength. The ethylene glycol/formamide compound plasticized bamboo fiber/PLA composites had the highest elongation at break, and the polyethylene glycol/citric acid compound plasticized bamboo fiber/PLA composite had the best water resistance. The composites had good compatibility and re-markably improved toughness by using the 3-element compound plasticization. Compared with the unitary plasticization and the 2-element compound plasticization, the glycerin/citric acid ester/glycol and glycerol/citric acid/formamide compound plasticized bamboo fiber/PLA composite had greater strength, higher elongation at break and better water resistance, as well as improved plasticizing effect.关键词
竹纤维/聚乳酸/复合增塑/界面相容性/机械性能/耐水性能Key words
bamboo fiber/polylactic acid/compound plasticization/interfacial compatibility/mechanical property/water resistance分类
通用工业技术引用本文复制引用
左迎峰,李文豪,李萍,赵星,李新功,吴义强..竹纤维/聚乳酸可降解复合材料的增塑改性[J].林业工程学报,2018,3(1):77-82,6.基金项目
国家自然科学基金(31600460) （31600460）
中国博士后科学基金特别资助项目(2017T100615). （2017T100615）
