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Effect of nylon 6 inclusions on the crystalline morphology of polypropylene–nylon 6 blends
Author(s) -
Jafari S. H.,
Gupta A. K.,
Rana S. K.
Publication year - 2000
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(20000401)75:14<1769::aid-app11>3.0.co;2-j
Subject(s) - polypropylene , materials science , nylon 6 , crystallization , morphology (biology) , spherulite (polymer physics) , isothermal process , nylon 66 , polymer chemistry , composite material , optical microscope , polymer blend , chemical engineering , scanning electron microscope , copolymer , polymer , polyamide , thermodynamics , physics , biology , engineering , genetics
Crystallization behavior and crystalline morphology of plain polypropylene (PP) and its blend with 0 to 30 wt % nylon 6 were studied by the hot‐stage polarized light microscopy method. Radial growth rate and the size and number of PP spherulites were measured as a function of both the isothermal crystallization temperature and the nylon 6 content of the blend. The study revealed that a reduction in the isothermal crystallization temperature from 135 to 120°C, for both the plain PP and its blend with nylon 6, leads to the formation of a large number of fast‐growing, small spherulites. Moreover, the size and growth rate of PP spherulites decreased on increasing the nylon 6 content of the blend; whereas the number of PP spherulites decreased sharply on initial addition of 10% nylon 6 and, thereafter, increased slightly by further addition of nylon 6. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 75: 1769–1775, 2000