摘要
文章制备了具有海绵结构的聚氨酯(PU)/聚乙烯醇缩丁醛(PVB)三维(3D)纳米纤维多孔结构。通过SEM、XRD和FTIR对其形貌和结构进行表征,并通过拉伸和压缩实验对其力学性能进行研究。SEM结果显示,不同PU和PVB质量比的三维结构在纤维形态和纤维间交联方面存在差异。XRD和FTIR结果证明了3D纳米纤维海绵中PU和PVB聚合物分子的存在,并明确了PU分子和PVB分子间存在交联。实验表明,当PU和PVB质量比为7︰3时,3D纳米纤维海绵中纤维形貌好,结构稳定,断裂强力为2.2 MPa,断裂伸长为175.5%。该多孔纤维轻质海绵具有优异的压缩回复性能,可应用于不同的领域。
In this study,a polyurethane(PU)and polyvinyl butyral(PVB)three-dimensional(3D)nanofiber porous sponge structure was prepared.Its morphology and structure were characterized by SEM,XRD and FTIR,and the mechanical properties were investigated by tensile and compressing tests.SEM results revealed that for the three-dimensional structure of different PU︰PVB ratios,there existed differences in fibre morphology and the interfibrous crosslinking.As proved by XRD and FTIR results,PU and PVB polymeric molecules existed in the 3D nanofiber sponge,and it was clarified that there exited crosslinking between PU molecules and PVB molecules.Experiments showed that when the mass ratio of PU and PVB was 7︰3,the fiber morphology of the 3D nanofiber sponge was good,the structure was stable,a breaking strength of 2.2 MPa,and a breaking elongation of 175.5%.The porous fiber lightweight sponge has excellent compression and resilience performance,and it can be applied in different fields.
作者
Tavonga Trevor Chadyagondo
陈强
施静雅
李妮
CHADYAGONDO Tavonga Trevor;CHEN Qiang;SHI Jingya;LI Ni(College of Textile Science and Engineering(International Institute of Silk),Zhejiang Sci-Tech University,Hangzhou 310018,China)
出处
《丝绸》
CAS
CSCD
北大核心
2021年第10期36-43,共8页
Journal of Silk
关键词
聚氨酯
聚乙烯醇缩丁醛
三维结构
多孔海绵
力学性能
polyurethane
polyvinyl butyral
three-dimensional structure
porous sponge
mechanical property
