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Facile Route to Improve the Crystalline Memory Effect: Electrospun Composite Fiber and Annealing
Author(s) -
Zhang Feifei,
Liu Xianhu,
Zheng Guoqiang,
Guo Zhanhu,
Liu Chuntai,
Shen Changyu
Publication year - 2018
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201800236
Subject(s) - materials science , composite material , composite number , tacticity , annealing (glass) , fiber , thermal stability , polymer , chemical engineering , polymerization , engineering
In this work, high temperature solution‐electrospun isotactic polypropylene (iPP) fiber and iPP/multiwalled carbon nanotube composite fiber are obtained. Compared with the iPP fiber, the composite fiber has a less grooved structure. After the electrospun fibers are embedded in an iPP matrix, both spherulites in the bulk and a layer of the transcrystallinity surrounding both the fibers are observed. However, there are no changes for the transcrystallinity in the composite fiber/iPP matrix even after melting and recrystallizing six times, indicating a super thermal stability and crystalline memory effect. Nevertheless, the crystalline memory effect of iPP fiber can be enhanced by annealing.