ICCAS OpenIR
Origin of oriented recrystallization of carbon-coated preoriented ultrathin polymer films
Yan, SK
2003-01-28
Source PublicationMACROMOLECULES
ISSN0024-9297
Volume36Issue:2Pages:339-345
AbstractThe origin of oriented recrystallization behavior of vacuum carbon evaporated preoriented polymer thin films was studied by means of transmission electron microscopy and electron diffraction with elaborately designed experimental setups. Through the recrystallization of HDPE in the iPP/HDPE-C sandwich layers with its original chain orientation being preserved by the coated carbon other than epitaxially crystallized on the highly oriented iPP substrate as usually happened without carbon coating, the graphoepitaxial crystallization of the polymer melts on their surface carbon replicas is ruled out of the origin of the oriented recrystallization. Through the different melt recrystallization behavior of melt-drawn 1-iPB thin films on and with vacuum evaporated carbon layers, the strong fixing effect of vacuum evaporated carbon layers on the polymer films has been recognized. This is further confirmed by the dissolution test of the vacuum carbon deposited HDPE thin films. The exact mechanism of the fixing effect of vacuum evaporated carbon layers on the thin polymer films is not quite clear yet. The recognition of the fixing effect is, however, sufficient to explain the oriented recrystallization phenomenon of the carbon coated preoriented thin polymer films. Namely, the vacuum evaporated carbon layer on the polymer thin film has prevented the surface extended macromolecular stems of the crystals from melting or at least from a complete relaxing during high-temperature annealing, and the surface fixing confined crystallization has induced the oriented recrystallization of the thin polymer molten layer.
DOI10.1021/ma021387o
Indexed BySCI
Language英语
WOS IDWOS:000180601500014
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:27[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/80970
Collection中国科学院化学研究所
Corresponding AuthorYan, SK
AffiliationChinese Acad Sci, State Key Lab Polymer Phys & Chem, Ctr Macromol Sci, Inst Chem, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Yan, SK. Origin of oriented recrystallization of carbon-coated preoriented ultrathin polymer films[J]. MACROMOLECULES,2003,36(2):339-345.
APA Yan, SK.(2003).Origin of oriented recrystallization of carbon-coated preoriented ultrathin polymer films.MACROMOLECULES,36(2),339-345.
MLA Yan, SK."Origin of oriented recrystallization of carbon-coated preoriented ultrathin polymer films".MACROMOLECULES 36.2(2003):339-345.
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