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Effect of compounding sequence on the morphology of organoclay‐filled PA6/PP/MAPP blends
Author(s) -
Wang Li,
Guo ZhaoXia,
Yu Jian
Publication year - 2010
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/app.33450
Subject(s) - organoclay , materials science , compatibilization , polyamide , composite material , compounding , polypropylene , coalescence (physics) , maleic anhydride , dynamic mechanical analysis , polymer chemistry , polymer blend , nanocomposite , copolymer , polymer , physics , astrobiology
Four types of compounding sequences were utilized to prepare organoclay‐filled polyamide 6 (PA6)/polypropylene (PP)/maleic anhydride grafted PP (MAPP) blends. The amount of PA6 molecules grafted to MAPP during in situ compatibilization reaction and the distribution ratio of organoclay in the continuous phase and interface zone were determined quantitatively. The relationship among dispersion and distribution states of organoclay, the amount of PA6 grafted to MAPP as well as the deformation, breakup and coalescence of dispersed droplets was elucidated to interpret the difference in phase morphology. Crystallization behavior and dynamic mechanical properties were also investigated and correlated with the morphology of the materials. It has been shown that the PA6/organoclay masterbatch approach results in the smallest average domain size because of the best organoclay dispersion, the highest amounts of PA6 grafted to MAPP, and organoclay at the interface, which efficiently stabilizes the droplets and prevents coalescence of the droplets. The material prepared by this approach has the biggest improvement in dynamic storage modulus. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011