Summary
Compared to poly(methyl methacrylate) (PMMA) or other poly(n-alkyl methacrylates), the thermal degradation of poly(2-hydroxyethyl methacrylate) (PHEMA) is rather complex, whereby the generated monomer (HEMA) is accompanied by a variety of other pyrolysis products. Besides HEMA, the dominating compounds were methacrylic acid and acetaldehyde, which could be established by gas chromatography.
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Reference
RAZGA, J. and PETRANEK, J., Eur. Polym. J. 11, 805 (1975)
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Braun, D., Steffan, R. Gas chromatographic determination of pyrolysis products from poly(2-hydroxyethyl methacrylate). Polymer Bulletin 3, 111–114 (1980). https://doi.org/10.1007/BF00263213
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DOI: https://doi.org/10.1007/BF00263213