Morphology, Mechanical, and Fracture Properties
of HNBR Modified ASA/SAN Blends¹

Wei Zhang and Jun Zhang

Department of Polymer Science and Engineering, College of Materials Science and Engineering,
Nanjing University of Technology, Nanjing 210009, China

e-mail: zhangjun@njut.edu.cn

Received November 27, 2012;
Revised Manuscript Received March 6, 2013

Abstract—In this work, acrylonitrile–styrene–acrylic terpolymer/styrene–acrylonitrile copolymer/hydroge-
nated nitrile rubber (ASA/SAN/HNBR) ternary blends with different composition were prepared by melt
blending. Properties of the ternary blends were studied by differential scanning calorimetry (DSC), dynamic
mechanical analysis (DMTA), Fourier transform infrared spectra (FTIR), heat distortion temperature (HDT),
melt flow rate (MFR), and Scanning electron microscopy (SEM). The results showed that the incorporation of
HNBR can enhance the toughness by a large scale, and the two rubber phase showed partial miscibility. Heat
resistance of the blends almost unchanged with HNBR content. FTIR told that the preparation of the ternary
blends was a physical process, and no obvious phase separation was observed in SEM images.

DOI: 10.1134/S0965545X14030195

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