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Preparation of a structured acrylic impact modifier and its application in toughening polyamide 6
Author(s) -
Zhao Haiyan,
Yao Yanmei,
Liu Xinran,
Zhang Qingxin,
Wang gyue,
Zhang Liqun,
Qu Xiongwei
Publication year - 2012
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.22096
Subject(s) - materials science , polyamide , nucleation , copolymer , emulsion polymerization , butyl acrylate , acrylate , scanning electron microscope , methyl methacrylate , composite material , methacrylate , acrylic acid , monomer , polymer chemistry , dynamic light scattering , morphology (biology) , toughness , polymer , chemical engineering , nanoparticle , organic chemistry , chemistry , biology , genetics , nanotechnology , engineering
Abstract A series of poly( n ‐butyl acrylate)/poly(methyl methacrylate‐ co ‐acrylic acid), i.e., poly(BA/MMA‐ co ‐AA), core‐shell structured modifiers with different contents of crosslinking agent allyl methacrylate and functional monomer were prepared, and its effects on mechanical properties of polyamide 6 (PA 6) blends were investigated. The modifiers were prepared at a solid content of 50 wt% by a seeded emulsion polymerization. Dynamic light scattering measurement showed that the particle grew without significant secondary nucleation occurring. The morphology was confirmed by means of transmission electron microscopy. Scanning electron microscopy was used to observe the morphology of the fractured surfaces. The dynamic mechanical analysis measurements indicated that the appearance of two merged transition peaks and the magnitude of the loss peak of PA 6 matrix with the addition of PBMA core‐shell modifier in the PA 6/PBMA blends were responsible for the improvement of PA 6 toughness. POLYM. ENG. SCI., 2012. © 2011 Society of Plastics Engineers