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Crystallization behavior of polypropylene/polyamide 6/montmorillonite nanocomposites
Author(s) -
Wang Qian,
Wang Xiao,
Fang Pengfei,
Wang Dahai,
Dai Yiqun,
Wang Shaojie,
Liew Kim Meow,
Xu Zepeng
Publication year - 2010
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.2869
Subject(s) - polypropylene , crystallization , materials science , montmorillonite , polyamide , maleic anhydride , nanocomposite , chemical engineering , polymer chemistry , copolymer , avrami equation , composite material , polymer , crystallization of polymers , engineering
Polymer blended materials such as polyamide 6 (PA6)/polypropylene (PP) blends have received considerable attention in recent years. To improve the compatibility of PA6 and PP, compatibilizers like maleic anhydride‐ g ‐polypropylene (MPP) are often added. In addition, organically modified montmorillonite (MMT) is also used to improve the properties of various materials. In this work, the crystallization behavior of PP/PA6/MMT nanocomposites with MPP compatibilizer was investigated systematically. The annealing process effectively improved the crystallization of α‐PP. The crystallization temperature ( T c ) of PA6 was increased by ca 2–3 °C on introducing MPP or MMT alone to the PP/PA6 system, whereas T c of PP underwent no obvious change. However, when MPP and MMT were added simultaneously, T c of PP and PA6 increased by 6.6 and 4.2 °C, respectively, and a new crystallization peak corresponding to PP‐ g ‐PA6 copolymer phase was observed at 162.5 °C. The combined effect of MPP and MMT led to better compatibility of PP with PA6. Moreover, the results of a non‐isothermal crystallization kinetics experiment revealed that the simultaneous introduction of MPP and MMT markedly shortened the crystallization time. Copyright © 2010 Society of Chemical Industry