Effect of Low Molecular Weight SAN on Fluidity and Mechanical Properties of PMMA

ZHU Congshan, ZHONG Cheng

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Plastics Science and Technology ›› 2025, Vol. 53 ›› Issue (02) : 78-81. DOI: 10.15925/j.cnki.issn1005-3360.2025.02.014
Processing and Application

Effect of Low Molecular Weight SAN on Fluidity and Mechanical Properties of PMMA

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Abstract

The study aims to investigate the effects of two different low molecular weight styrene-acrylonitrile copolymer(SAN) resins on the flow properties, mechanical performance, compatibility, transparency, and thermal stability of poly(methyl methacrylate) (PMMA). Various properties of the system were evaluated using a differential scanning calorimeter, a melt flow rate tester, an electronic universal tensile testing machine, and a Vicat heat deflection tester. The results indicate that the PMMA system with the addition of a portion of low molecular weight SAN resin exhibits only one glass transition temperature, suggesting good compatibility of the system. The incorporation of low molecular weight SAN resin can enhance the melt flowability of PMMA by more than 50%, but with minimal impact on transparency and thermal stability of the material.

Key words

Poly(methyl methacrylate) (PMMA) / Styrene-acrylonitrile copolymer (SAN) resin / Fluidity / Mechanical properties / Compatibility

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ZHU Congshan , ZHONG Cheng. Effect of Low Molecular Weight SAN on Fluidity and Mechanical Properties of PMMA. Plastics Science and Technology. 2025, 53(02): 78-81 https://doi.org/10.15925/j.cnki.issn1005-3360.2025.02.014

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