ICCAS OpenIR
Insight into growth details and characteristics of windmill-like polyethylene crystals
Wang, Jie; Li, Ligui; Yang, Xiaoniu
2009-09-23
Source PublicationPOLYMER
ISSN0032-3861
Volume50Issue:20Pages:4950-4956
AbstractThe crystallization detail of polyethylene (PE) has been scarcely studied via in-situ approach since it is an extremely fast process. In this work, optical microscopy is used to investigate crystallization details and characteristics of windmill-like polyethylene crystals. It has been shown that the straight edges of the petals appear firstly and grow in pairs from their central junctions, which subsequently induce the surrounding domains in between each pairs of petals to nucleate and crystallize into twisted lamellar overgrowths. The remaining terrace-stacked lamellae which form curved edges of the petals start to develop only after the straight edges of the petals together with the twisted lamellar overgrowths have completed their growth. It is confirmed that the preferential growth direction of these petals are along crystallographic [113] axis, which has an angle of 65, with the typical direction along b-axis adopted also by the twisted lamellar overgrowths. The crystallization kinetics is analyzed in terms of Avrami equation and an Avrami exponent n = 2 is thus obtained, which is consistent with the morphological observations of heterogeneous nucleation and 2-dimensional growth for these PE crystals. The melting behaviors of these crystals are exactly the reversed process of crystallization. (C) 2009 Elsevier Ltd. All rights reserved.
KeywordPolyethylene Crystallisation Morphology
DOI10.1016/j.polymer.2009.08.008
Indexed BySCI
Language英语
WOS IDWOS:000272959300025
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/67272
Collection中国科学院化学研究所
Corresponding AuthorYang, Xiaoniu
AffiliationChinese Acad Sci, State Key Lab Polymer Phys & Chem, Grad Sch, Changchun Inst Appl Chem, Changchun 130022, Peoples R China
Recommended Citation
GB/T 7714
Wang, Jie,Li, Ligui,Yang, Xiaoniu. Insight into growth details and characteristics of windmill-like polyethylene crystals[J]. POLYMER,2009,50(20):4950-4956.
APA Wang, Jie,Li, Ligui,&Yang, Xiaoniu.(2009).Insight into growth details and characteristics of windmill-like polyethylene crystals.POLYMER,50(20),4950-4956.
MLA Wang, Jie,et al."Insight into growth details and characteristics of windmill-like polyethylene crystals".POLYMER 50.20(2009):4950-4956.
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