Polymorphic transformation morphology of isotactic poly(1-butene)/poly(propylene-co-1-butene-co-ethylene) blends
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- 作者：Silvana da Silva Valter ; Carlos Alberto Rodrigues Costa…
- 关键词：Isotactic poly(1 ; butene) ; Poly(propylene ; co ; 1 ; butene ; co ; ethylene) ; Blend ; Aging ; Crystallization
- 刊名：Journal of Polymer Research
- 出版年：2017
- 出版时间：February 2017
- 年：2017
- 卷：24
- 期：2
- 全文大小：
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Polymer Sciences; Industrial Chemistry/Chemical Engineering; Characterization and Evaluation of Materials;
- 出版者：Springer Netherlands
- ISSN：1572-8935
- 卷排序：24
文摘
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.