ICCAS OpenIR
Branched crystal morphology of linear polyethylene crystallized in a two-dimensional diffusion-controlled growth field
Zhang, F; Liu, J; Huang, H; Du, B; He, T
2002-06-01
Source PublicationEUROPEAN PHYSICAL JOURNAL E
ISSN1292-8941
Volume8Issue:3Pages:289-297
AbstractThe branched crystal morphology of linear polyethylene formed at various temperatures from thin films has been studied by atomic-force microscopy (AFM), transmission electron microscopy (TEM), electron diffraction (ED) pattern and polymer decoration technique. Two types of branched patterns, i.e. dendrite and seaweed patterns, have been visualized. The fractal dimension d(f) = 1.65 of both dendrite and some of seaweed patterns was obtained by using the box-counting method, although most of the seaweed patterns are compact. Selected-area ED patterns indicate that the fold stems tilt about 34.5degrees around the b-axis and polymer decoration patterns show that the chain folding direction and regularity in two (200). regions are quite different from each other. Because of chain tilting, branched crystals show three striking features: 1) the lamella-like branches show two (200) regions with different thickness; 2) the crystals usually bend towards the thin region; 3) the thick region grows faster by developing branches, thus branches usually occur outside the thick region. The branched patterns show a characteristic width w, which gives a linear relationship with the crystallization temperature on a semilogarithmic plot.
DOI10.1140/epje/i2002-10015-3
Indexed BySCI
Language英语
WOS IDWOS:000177771500004
PublisherSPRINGER-VERLAG
Citation statistics
Cited Times:31[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/78892
Collection中国科学院化学研究所
Corresponding AuthorZhang, F
AffiliationChinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
Recommended Citation
GB/T 7714
Zhang, F,Liu, J,Huang, H,et al. Branched crystal morphology of linear polyethylene crystallized in a two-dimensional diffusion-controlled growth field[J]. EUROPEAN PHYSICAL JOURNAL E,2002,8(3):289-297.
APA Zhang, F,Liu, J,Huang, H,Du, B,&He, T.(2002).Branched crystal morphology of linear polyethylene crystallized in a two-dimensional diffusion-controlled growth field.EUROPEAN PHYSICAL JOURNAL E,8(3),289-297.
MLA Zhang, F,et al."Branched crystal morphology of linear polyethylene crystallized in a two-dimensional diffusion-controlled growth field".EUROPEAN PHYSICAL JOURNAL E 8.3(2002):289-297.
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