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New polypropylene blends toughened by polypropylene/poly(ethylene-co-propylene) in-reactor alloy: Compositional and morphological influence on mechanical properties
Li, Rongbo1,2; Zhang, Xiuqin1; Zhao, Ying1; Hu, Xuteng3; Zhao, Xutao3; Wang, Dujin1
2009-10-09
Source PublicationPOLYMER
ISSN0032-3861
Volume50Issue:21Pages:5124-5133
AbstractA new toughening agent, polypropylene/poly(ethylene-co-propylene) in-reactor alloy (EP-P), has been adopted to modify isotactic polypropylene (PP) in present study. Systematic investigation has been performed on the inter-compositional interaction, crystalline structure, and phase morphology of a series of PP/EP-P blends. It has been found that the PP component from EP-P is thoroughly miscible with neat PP and they together serve as the matrix of the PP/EP-P blends, while the ethylene-propylene random copolymers (EPR) act as the dispersed phase. The ethylene-propylene segmented copolymers (EPS), behaving as the compatibilizer between the EPR dispersed phase and PP matrix, strengthen mutual incorporation and effective diffusion of the amorphous PP segments and the EPR molecules. Based on the in-depth understanding of the crystalline structure and phase morphology, the correlation between morphological structure and mechanical properties has been established. The excellent impact toughness of PP/EP-P blends with higher EP-P content is mainly attributed to the small PP crystallites scattered in the blends and the well dispersed EP copolymer domains in PP matrix. (C) 2009 Elsevier Ltd. All rights reserved.
KeywordPolypropylene Blends Polypropylene/poly(Ethylene-co-propylene) In-reactor Alloy Structure-property Correlation
DOI10.1016/j.polymer.2009.09.026
Indexed BySCI
Language英语
WOS IDWOS:000270705700020
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:39[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/68308
Collection中国科学院化学研究所
Corresponding AuthorWang, Dujin
Affiliation1.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, CAS Key Lab Engn Plast, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100190, Peoples R China
3.PetroChina Petrochem Res Inst, Beijing 100083, Peoples R China
Recommended Citation
GB/T 7714
Li, Rongbo,Zhang, Xiuqin,Zhao, Ying,et al. New polypropylene blends toughened by polypropylene/poly(ethylene-co-propylene) in-reactor alloy: Compositional and morphological influence on mechanical properties[J]. POLYMER,2009,50(21):5124-5133.
APA Li, Rongbo,Zhang, Xiuqin,Zhao, Ying,Hu, Xuteng,Zhao, Xutao,&Wang, Dujin.(2009).New polypropylene blends toughened by polypropylene/poly(ethylene-co-propylene) in-reactor alloy: Compositional and morphological influence on mechanical properties.POLYMER,50(21),5124-5133.
MLA Li, Rongbo,et al."New polypropylene blends toughened by polypropylene/poly(ethylene-co-propylene) in-reactor alloy: Compositional and morphological influence on mechanical properties".POLYMER 50.21(2009):5124-5133.
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