Polymorphic transformation morphology of isotactic poly(1-butene)/poly(propylene-co-1-butene-co-ethylene) blends

被引：2
|
作者：
Valter, Silvana da Silva [1 ]
Rodrigues Costa, Carlos Alberto [2 ]
Battirola, Liliane Cristina [1 ]
de Farias, Marcelo Alexandre [2 ]
Galembeck, Fernando [1 ]
Goncalves, Maria do Carmo [1 ]
机构：
[1] Univ Estadual Campinas, Inst Chem, UNICAMP, BR-13083970 Campinas, SP, Brazil
[2] Brazilian Nanotechnol Natl Lab LNNano CNPEM, BR-13083100 Campinas, SP, Brazil
来源：
JOURNAL OF POLYMER RESEARCH | 2017年 / 24卷 / 02期
基金：
巴西圣保罗研究基金会;
关键词：
Isotactic poly(1-butene); Poly(propylene-co-1-butene-co-ethylene); Blend; Aging; Crystallization; PULSED-FORCE-MODE; RANDOM BUTENE-1/ETHYLENE COPOLYMERS; MECHANICAL-PROPERTIES; POLYMER BLENDS; CRYSTAL TRANSFORMATION; PHASE-TRANSITION; CRYSTALLIZATION; POLY(1-BUTENE); POLY-1-BUTENE; MICROSCOPY;
D O I：
10.1007/s10965-016-1178-z
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The aim of this work was to investigate the polymorphic transformation morphology of isotactic poly(1-butene) (iPB-1) in blends with poly (propylene-co-1-butene-co-ethylene) (terPP). The blends were prepared by solution casting followed by compression-molding and were examined immediately after preparation as well as after aging for over 30 days. Morphological changes were firstly observed by polarized optical microscopy, which showed that the terPP promotes the reduction of the spherulite mean size during the crystallization of iPB-1 from the melt. Digital pulsed force microscopy provided data about the terPP interspersion between the interfibrilar and spherulitic regions of the iPB-1 crystals, causing iPB-1 spherulite deformation. However, a better distribution of the amorphous component on the iPB-1 crystals was observed after phase II to I transition, favored by the rearrangement of iPB-1 lamellae and lamellar stacks during phase transition.
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页数：8
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