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Short glass fiber reinforced radiation crosslinked shape memory SBS/LLDPE blends
Author(s) -
Yongkun Wang,
Guangming Zhu,
Yusheng Tang,
Tingting Liu,
Jianqiang Xie,
Fang Ren
Publication year - 2014
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.40691
Subject(s) - linear low density polyethylene , materials science , composite material , differential scanning calorimetry , shape memory alloy , shape memory polymer , ultimate tensile strength , composite number , dynamic mechanical analysis , copolymer , polyethylene , fiber , polymer , physics , thermodynamics
The poly(styrene‐ b ‐butadiene‐ b ‐styrene) triblock copolymer (SBS) and linear low density polyethylene(LLDPE) were blended and irradiated by γ‐rays to prepare shape memory polymer(SMP). Various amounts of short glass fiber (SGF) were filled into SMP to form a novel shape memory SGF/SBS/LLDPE composite. The effect of SGF on the shape memory SGF/SBS/LLDPE composite was studied in terms of mechanical, dynamic mechanical analysis (DMA), differential scanning calorimetry (DSC) and shape memory effects. It is found that the SGF act as reinforcing fillers and significantly augment the glassy and rubbery stated moduli, tensile strength and shape memory properties. When SGF content is <2.0 wt %, full recovery can be observed after only several minutes at different temperatures and shape recovery speed reduces as the SGF content increases. The shape recovery time decreases as the temperature of the shape memory test increases and the shape recovery rate decreases with increment of cycle times. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131 , 40691.