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The effect of UV irradiation on structure and mechanical behaviour of .beta. nucleated polypropylene
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SYSNO ASEP 0189185 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title The effect of UV irradiation on structure and mechanical behaviour of .beta. nucleated polypropylene Author(s) Kotek, Jiří (UMCH-V) RID
Kelnar, Ivan (UMCH-V) RID, ORCID
Baldrian, Josef (UMCH-V)
Raab, Miroslav (UMCH-V)Source Title Proceedings. - HalleWittenberg : MartinLutherUniversität, 2003 Pages s. - Publication form CD-Rom - CD-Rom Action Tagung Deformation und Bruchverhalten von Kunststoffen /9./ Event date 25.06.2003-27.06.2003 VEvent location Halle-Wittenberg Country DE - Germany Event type EUR Language eng - English Country DE - Germany Keywords isotactic polypropylene ; .beta. nucleation ; photo-degradation Subject RIV CD - Macromolecular Chemistry R&D Projects GP106/02/P027 GA ČR - Czech Science Foundation (CSF) GA106/02/1249 GA ČR - Czech Science Foundation (CSF) GA106/01/0601 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z4050913 - UMCH-V Annotation Isotactic polypropylene modified by a specific .beta. nucleation agent was exposed to UV photo-degradation and characterized by x-ray diffraction and tensile testing. A decrease of the content of the crystalline .beta. phase and an increase of the size of the .beta. crystallites indicated an allotropic .beta.-.alpha. re-crystallization. A decrease of the strain at break was ascribed to the formation of surface microcracks. The results are discussed in relation to the effect of thermal aging. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2004
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