两种水溶性植物提取物及其残渣/PE复合材料的性能研究  

Study on performance of two water soluble plant extracts and their residues/PE composites

作　　者：宋洁[1] 柯如媛 李婷婷[1] 张敏[1] 费贵强 SONG Jie;KE Ru-yuan;LI Ting-ting;ZHANG Min;FEI Gui-qiang(Shaanxi Key Laboratory of Chemical Additives for Industry,Shaanxi University of Science ＆ Technology Xi＇an 710021,China)

机构地区：[1]陕西科技大学陕西省轻化工助剂重点实验室,陕西西安710021

出　　处：《陕西科技大学学报》2018年第5期93-97,128,共6页Journal of Shaanxi University of Science & Technology

基　　金：国家自然科学基金项目(51803114);陕西省科技厅重点研发计划项目(2017GY-154);陕西省教育厅重点实验室科研计划项目(17JS014);西安市科技计划项目(2017068CG/RC031(SXKD004));国家级大学生创新创业训练计划项目(201710708005)

摘　　要：将天然植物黄芩、虎杖提取物以及提取干燥后的残渣纤维分别与聚乙烯(PE)共混,制备了黄芩、虎杖提取物/PE,黄芩、虎杖残渣/PE复合材料.研究了各种复合材料的表面形貌、断面形貌、亲疏水性、热性能、力学性能及抗菌性能.结果表明,黄芩和虎杖提取物赋予了PE染色功能性,添加比例较小时在PE中分散较均匀,而其残渣以纤维状镶嵌在PE当中起到连接基材的作用.黄芩、虎杖提取物/PE复合材料的亲水性高于残渣/PE复合材料,而热性能、力学性能略低于残渣/PE复合材料.两种提取物/PE复合材料失重5%时的热失重温度均在300℃以上,而残渣/PE复合材料在小比例添加时热性能还高于基材本身.残渣纤维的添加使得PE的力学性能在小比例添加时能够作为增强材料使用,扩大了其应用范围.黄芩、虎杖提取物/PE复合材料具有显著的抑菌作用.Scutellaria baicalensis Georgi extracts/PE, Polygonum cuspidatum Sieb. et Zucc extracts/PE, Scutellaria baicalensis Georgi residues/PE and Polygonum cuspidatum Sieb. et Zucc residues/PE composites were prepared by blending natural plant extracts of Scutellaria baicalensis Georgi ,Polygonum cuspidatum Sieb. et Zucc extracts and their residue fibers af ter drying respectively with polyethylene （PE）. The surface morphology, cross sectional morphology, hydrophilicity,thermal properties,mechanical properties and antibacterial prop erties of various composites were studied. The results showed that Scutellaria baicalensis Georgi extracts and Polygonum cuspidatum Sieb. et Zucc extracts could give PE dying func tionality. When added in PE with a small proportion,they dispersed uniformly,while the resi dues was embedded in PE to form a matrix to connect the substrate. Scutellaria baicalensis Georgi extracts/PE, Polygonum cuspidatum Sieb. et Zucc extracts/PE composites were more hydrophilic than that of the residues/PE composites, while the thermal properties and me chanical properties were slightly lower than that of residues/PE composites. The weight loss temperature of the two kinds of extracts/PE composites were all above 300 ℃ when the weight loss is 5% , while the residues/PE composites had a higher thermal properties than the substrate itself and the addition of residue fibers made the mechanical properties of PE applications to be expanded when it was added in a small proportion. Scutellaria baicalensis Georgi extracts/PE,Polygonum cuspidatum Sieb. et Zucc extracts/PE composites had signif icant antibacterial effect.

关 键 词：聚乙烯 植物提取物 复合材料 性能 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]