Thermal Expansion Behavior of Thermally Expandable Microspheres Prepared by Suspension Polymerization Using P(AN‐MMA‐MAA) Core/Shell

Thermally expandable microspheres (TEMs) have widespread industrial applications. In this study, high heat resistant and largely expandable TEMs have been synthesized by suspension polymerization. Microspheres were prepared with acrylonitrile (AN) as the main monomer. Initial thermomechanical analys...

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Bibliographic Details
Published in:Bulletin of the Korean Chemical Society 2020, 41(2), , pp.190-195
Main Authors: Kim, Hyun Tae, Jaladi, Ashok Kumar, Lee, Yong Jin, An, Duk Keun
Format: Article
Language:English
Subjects:
Acrylonitrile
Copolymer
Core–shell structure
Methacrylic acid
Methyl methacrylate
Suspension polymerization
Thermally expandable microspheres
화학
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Summary:Thermally expandable microspheres (TEMs) have widespread industrial applications. In this study, high heat resistant and largely expandable TEMs have been synthesized by suspension polymerization. Microspheres were prepared with acrylonitrile (AN) as the main monomer. Initial thermomechanical analysis of TEMs containing AN and methyl acrylate (MA) showed good thermal expansion, leading to the investigation of the polymerization using various monomers at variable weight ratios. TEMs with co‐polymer AN, methyl methacrylate (MMA), and methacrylic acid (MAA) were investigated for the first time. They displayed wider heating range and larger expansion rate than the microspheres with MA monomer. The effect of varying amounts of monomer ratios on the thermal expansion behavior is discussed. The synthesis of thermally expandable microspheres (TEMs) using non‐nitrile monomers such as MA, MMA, and MAA.
ISSN:1229-5949
0253-2964
1229-5949
DOI:10.1002/bkcs.11952