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Effects of mechanical force on crystalline structure of electrospun poly(1‐butene) membranes
Author(s) -
Lee Yujin,
Lee Jieun,
Kimura Disuke,
Kim ByoungSuhk,
Koh Joonseok,
Kim IckSoo
Publication year - 2011
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.3098
Subject(s) - materials science , membrane , electrospinning , scanning electron microscope , elongation , deformation (meteorology) , composite material , 1 butene , diffraction , polymer chemistry , polymer , chemical engineering , ultimate tensile strength , chemistry , optics , organic chemistry , biochemistry , catalysis , physics , engineering
Fibrous poly(1‐butene) membranes were prepared from solutions using mixed solvents via electrospinning. The electrospun fibrous poly(1‐butene) membranes were stretched at elongations of 8, 16 and 24%, respectively. Scanning electron microscopy and stress–strain analysis showed that the deformation was elastic at an elongation of 8%, while plastic deformation occurred above 16%. The crystalline transformation induced by mechanical stretching was investigated using wide‐angle X‐ray diffraction. The poly(1‐butene) membrane stretched at 24% exhibited decreased diffraction intensity at 2θ = 11.8° and 18.3°, corresponding to the (200) and (213) crystalline reflections, indicating that crystalline transformation from metastable form II to either stable form I or I′ occurred due to mechanical stretching. Copyright © 2011 Society of Chemical Industry