Morphology of undeformed and deformed polyethylene lamellar crystals
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F10%3A00349870" target="_blank" >RIV/61389013:_____/10:00349870 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Morphology of undeformed and deformed polyethylene lamellar crystals
Original language description
Morphology of undeformed polyethylene crystals obtained by high pressure crystallization was investigated by SEM. The etching procedure was refined to reveal defected sites of lamellae in addition to differentiation of crystalline and amorphous phases. From 1 to 3 screw dislocations with large Burgers vector per 1 ?m2 of lamellae basal planes were detected. High pressure-crystallized polyethylene samples were deformed plastically by uniaxial compression and studied by SEM and AFM. When the deformation is interrupted dislocations are arrested within the crystals. Plastically deformed polyethylene crystals are highly defected ? the density of dislocations was approximated as 1016 m2. However, deformed crystal melting temperature is nearly unaffected while the heat of melting is slightly reduced, yet only in thin crystals. It suggests that the arrested dislocations contribute more to the surface energy of lamellae basal planes rather than to the bulk energy of polyethylene crystals.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CF - Physical chemistry and theoretical chemistry
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GAP205%2F10%2F0348" target="_blank" >GAP205/10/0348: Sandwich nanocomposites: preparation, nucleation effects, electrical properties.</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Polymer
ISSN
0032-3861
e-ISSN
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Volume of the periodical
51
Issue of the periodical within the volume
24
Country of publishing house
GB - UNITED KINGDOM
Number of pages
8
Pages from-to
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UT code for WoS article
000284248100017
EID of the result in the Scopus database
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