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Characterization of polypropylene–poly(1‐butene)–hydrogenated olygo(cyclopentadiene) ternary blends
Author(s) -
Beltrame Pier Luigi,
Castelli Antonella,
Munaretto Germano,
Canetti Maurizio,
Seves Alberto
Publication year - 1997
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19970829)65:9<1659::aid-app2>3.0.co;2-e
Subject(s) - spherulite (polymer physics) , materials science , polypropylene , polymer blend , ternary operation , crystallization , polymer chemistry , miscibility , dynamic mechanical analysis , thermal stability , chemical engineering , ternary numeral system , glass transition , copolymer , phase (matter) , polymer , composite material , chemistry , organic chemistry , engineering , programming language , computer science
Ternary blends containing polypropylene (PP), poly(1‐butene) (PB), and hydrogenated oligo(cyclopentadiene) (HOCP) have been studied using microscopic calorimetric and dynamic mechanical techniques, with no phase separation having been observed in the melt for all the considered compositions. The morphology of the crystallized blends and spherulite growth rate of the PP component appeared to be influenced by the blend composition. The presence of one or two T g s revealed by dynamic mechanical thermal analysis (DMTA) on quenched or crystallized blends has suggested that demixing phenomena can occur during the crystallization of the components. The blend composition has been found to affect the overall crystallization rate and the equilibrium melting temperature of the PP component. A parameter describing the enthalpic interactions between the PP component and the diluent fraction evidenced that the addition of HOCP to PP and PB increases the stability of the ternary blend. The above results suggest that the three components can form a miscible blend in the melt. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 65:1659–1665, 1997