Issue Information
روزنامه با شماره پیاپی سال 2003
Pages
7
From page
211
To page
217
Abstract
The degradation of isotactic and syndiotactic poly(methyl methacrylate) (PMMA) was studied by thermogravimetric analysis (TGA) with an emphasis on their behavior in ultrathin films on silica. Both PMMA tacticity and adsorbed amounts were found to affect the degradation. In bulk, syndiotactic PMMA (syn-PMMA) has higher thermal stability than isotactic PMMA (iso-PMMA) due to its lower chain mobility. The Tmax (maximum rate decomposition temperature) is lower than that of bulk samples at higher adsorbed amounts for both iso- and syn-PMMA. Tmax increases when the adsorbed amount on the silica surface decreases for syn-PMMA. The degradation behavior of adsorbed iso-PMMA became very complex at low adsorbed amounts.
Journal title
Food Microbiology
Serial Year
2003
Journal title
Food Microbiology
Record number
1191253
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