Počet záznamů: 1
Processing-improved properties and morphology of PP/COC blends
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SYSNO ASEP 0362902 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Processing-improved properties and morphology of PP/COC blends Tvůrce(i) Vacková, Taťana (UMCH-V) RID
Šlouf, Miroslav (UMCH-V) RID, ORCID
Nevoralová, Martina (UMCH-V) RID, ORCID
Kaprálková, Ludmila (UMCH-V)Zdroj.dok. Journal of Applied Polymer Science. - : Wiley - ISSN 0021-8995
Roč. 122, č. 2 (2011), s. 1168-1175Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova polymer blend ; phase morphology ; fiber Vědní obor RIV JI - Kompozitní materiály CEP GP106/09/P272 GA ČR - Grantová agentura ČR CEZ AV0Z40500505 - UMCH-V (2005-2011) UT WOS 000293741800053 DOI 10.1002/app.34258 Anotace The aim of this study was to improve mechanical properties of polypropylene/cycloolefin copolymer (PP/COC) blends by processing-induced formation of long COC fibers. We focused our attention on finding processing conditions yielding PP/COC fibrous morphology in a well-defined, reproducible way. A number of PP/COC blends were prepared by both compression molding and injection molding (IM). Neat polymers were characterized by rheological measurements, whereas phase morphology of the resulting blends was characterized by means of scanning electron microscopy. The longest COC fibers were achieved in the injection molded PP/COC blends with compositions 75/25 and 70/30 wt %. Elastic modulus and yield strength were measured as functions of the blend composition using an Instron tensile tester; statistically significant improvement of the yield strength due to fibrous morphology was proved. Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2012
Počet záznamů: 1