Thermal, thermo-mechanical, and dynamic mechanical properties of polypropylene/cycloolefin copolymer blends

0365763 - ÚMCH 2012 RIV US eng J - Journal Article
Fambri, L. - Kolařík, Jan - Pegoretti, A. - Penati, A.
Thermal, thermo-mechanical, and dynamic mechanical properties of polypropylene/cycloolefin copolymer blends.
Journal of Applied Polymer Science. Roč. 122, č. 5 (2011), s. 3406-3414. ISSN 0021-8995. E-ISSN 1097-4628
R&D Projects: GA ČR GA106/09/1348
Institutional research plan: CEZ:AV0Z40500505
Keywords : blends * poly(propylene) * cycloolefin copolymer
Subject RIV: JI - Composite Materials
Impact factor: 1.289, year: 2011

Interaction of the components and physical properties of the polypropylene (PP)/cycloolefin copolymer (COC) blends were studied by means of differential scanning calorimetry (DSC), dynamic mechanical thermal analysis (DMTA), Vicat softening temperature (VST), and measurements of the coefficient of linear thermal expansion (CLTE) and of the density. The attention was focused on the blends with 90–60% of PP by wt, where the COC minority component was present in the form of short fibers. DSC, DMTA, and density measurements concurrently prove the immiscibility of PP and COC. DSC measurements reveal that crystallinity and melting temperature of the PP component slightly decrease with the fraction of COC in blends, in the range of 56–47% and 164–161°C, respectively.
Permanent Link: http://hdl.handle.net/11104/0006607