细菌纤维素/热塑性聚氨酯复合气凝胶纤维制备及性能
Preparation and performances of bacterial cellulose/thermoplastic polyurethane composite aerogel fibers
张卫杰 1薛仝 1殷允杰1
作者信息
- 1. 江南大学 纺织科学与工程学院,生态纺织教育部重点实验室,江苏 无锡 214122
- 折叠
摘要
使用生物基有机材料细菌纤维素(BC)掺杂热塑性聚氨酯弹性体(TPU),通过湿法纺丝制备了BC/TPU复合气凝胶纤维.通过FTIR、XRD、TG、SEM、全自动比表面积孔隙度分析仪和单丝强力仪对制备的BC/TPU复合气凝胶纤维进行了结构表征和性能测试,探讨了BC、TPU的质量分数(以纺丝液质量为基准,下同)对BC/TPU复合气凝胶纤维性能的影响.结果表明,BC/TPU具有多孔结构,比表面积为 121 m2/g,密度为0.464 g/cm3,具有良好的力学性能和隔热性能.当BC质量分数为2.0%、TPU质量分数为1.0%时,制备的BC/TPU复合气凝胶纤维的拉伸性能最优,拉伸强度达到 24.69 MPa,断裂伸长率为 38.54%,热台温度从 40℃升高到100℃时,纤维温度仅升高12.16℃.
Abstract
Biobased organic material bacterial cellulose(BC)/thermoplastic polyurethane elastomer(TPU)composite aerogel fibers were synthesized from wet spinning of BC doped with TPU,and characterized by FTIR,XRD,TG,SEM,automatic specific surface porosity analyzer and monofilament strength meter for structure and property analysis test.The influence of mass fraction(based on the mass of spinning solution,the same below)of BC and TPU on the properties of composite aerogel fibers was further evaluated.The results showed that the BC/TPU composite aerogel fibers exhibited porous structure,with a specific surface area of 121 m2/g and density of 0.464 g/cm3,good thermal insulation and mechanical properties.When the mass fractions of BC and TPU was 2.0%and 1.0%,respectively,the obtained BC/TPU composite aerogel fiber displayed the best tensile properties,with a breaking strength of 24.69 MPa and an elongation at break of 38.54%.The temperature of fiber only increased 12.16℃when the temperature of hot stage increased from 40℃to 100℃.
关键词
细菌纤维素/气凝胶纤维/多孔性/隔热性能/力学性能/功能材料Key words
bacterial cellulose/aerogel fibers/porosity/thermal insulation/mechanical properties/functional materials引用本文复制引用
基金项目
中央高校基本科研业务费专项(JUSRP51724B)
出版年
2024
NETL
NSTL
维普
万方数据