Study of mechanical, thermal, morphological, and process rheology of acrylonitrile styrene acrylate (ASA)/ Na^sup +1^ poly(ethylene-co-methacrylic acid) ionomer blend

Acrylonitrile-styrene-acrylic (ASA) terpolymer was blended with a sodium neutralized poly (ethylene-co-methacrylic acid) ionomer to develop a weather-resistant ASA with good heat sealing and adhesion properties. Both tensile strengths and modulus were reduced by about 45% with an increase in Na-iono...

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Bibliographic Details
Published in:Polymer engineering and science 2015-07, Vol.55 (7), p.1571
Main Authors: Datta, Pulak, Guha, Chandan, Sarkhel, Gautam
Format: Article
Language:English
Subjects:
Heat
Matrix
Microstructure
Polyethylene
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Summary:Acrylonitrile-styrene-acrylic (ASA) terpolymer was blended with a sodium neutralized poly (ethylene-co-methacrylic acid) ionomer to develop a weather-resistant ASA with good heat sealing and adhesion properties. Both tensile strengths and modulus were reduced by about 45% with an increase in Na-ionomer concentration of 50%. The mechanical data were fitted with different models that predict mechanical behavior. The thermal stability was increased with the incorporation of ionomer. The temperature corresponding to 50% mass loss (Tm50) was increased from 400°C (for ASA) to 427°C for 50/50 ASA/Na-ionomer blend. SEM and AFM micrographs reveal the cone-shaped microstructure on the ASA matrix surface after a critical Na-ionomer concentration of 30%. This blend system follows typical non-Newtonian behavior. The heat sealing performance study with metal was also carried out to investigate the utilization of these blend systems as a protective layer for metal.
ISSN:0032-3888
1548-2634