Fabrication and Chemical Crosslinking of Electrospun Trans-polyisoprene Nanofiber Nonwoven  

作　　者：hua-rong nie chao wang 贺爱华 

机构地区：[1]Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization, Key Laboratory of Rubber-Plastics (Ministry of Education), School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China

出　　处：《Chinese Journal of Polymer Science》2016年第6期697-708,共12页高分子科学（英文版）

基　　金：financially supported by the National Basic Research Program of China(No.2015CB654700(2015CB654706));the National Natural Science Foundation of China(Nos.51473083 and 21174074);Special Foundation of Taishan Mountain Scholar Constructive Program;Shandong Provincial Key R&D program(No.2015GGX102019);Shandong Provincial Natural Science Fund for Distinguished Young Scholars(No.JQ201213);the Yellow River Delta Scholar program(Office of National University Science&Technology Park Administrative Committee(China University of Petroleum))

摘　　要：In this work, the optimal electrospinning conditions of trans-polyisoprene （TPI） solutions were evaluated nevertheless its lower glass transition temperature than the room temperature. Subsequently, chemical crosslinking of TPI nonwovens was firstly investigated by vulcanizing at high temperatures in the case of the persistence of nanofiber structure. For this purpose, curing agents of TPI were embedded in TPI nanofibers by co-electrospinning, and then a protect layer was coated on TPI nanofibers by filtering gelatin solution going through TPI nonwoven before the vulcanization at 140-160 ℃. The results showed that the vulcanization of TPI fibrous nonwoven at high temperatures did not destroy the fiber morphology. Interestingly, TPI fibrous nonwovens after vulcanization showed excellent mechanical properties （N17 MPa of tensile strength） that could be comparable to or even higher than that of some bulk rubber materials.In this work, the optimal electrospinning conditions of trans-polyisoprene （TPI） solutions were evaluated nevertheless its lower glass transition temperature than the room temperature. Subsequently, chemical crosslinking of TPI nonwovens was firstly investigated by vulcanizing at high temperatures in the case of the persistence of nanofiber structure. For this purpose, curing agents of TPI were embedded in TPI nanofibers by co-electrospinning, and then a protect layer was coated on TPI nanofibers by filtering gelatin solution going through TPI nonwoven before the vulcanization at 140-160 ℃. The results showed that the vulcanization of TPI fibrous nonwoven at high temperatures did not destroy the fiber morphology. Interestingly, TPI fibrous nonwovens after vulcanization showed excellent mechanical properties （N17 MPa of tensile strength） that could be comparable to or even higher than that of some bulk rubber materials.

关 键 词：TRANS-1 4-POLYISOPRENE Electrospun nanofibers GELATIN VULCANIZATION Chemical crosslinking. 

分 类 号：TQ340.64[化学工程—化纤工业]