کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5203940 1381944 2009 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The thermal degradation behaviour of polydimethylsiloxane/montmorillonite nanocomposites
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
The thermal degradation behaviour of polydimethylsiloxane/montmorillonite nanocomposites
چکیده انگلیسی
A series of novel polydimethylsiloxane/montmorillonite (PDMS/MMT) nanocomposites was prepared. The thermal degradation behaviour of these nanocomposites was studied by means of Thermal Volatilization Analysis (TVA) and Thermogravimetric Analysis (TGA). The major degradation products were identified as cyclic oligomeric siloxanes from D3 to D7, and higher oligomeric siloxane residues. Other minor degradation products include methane, bis-pentamethylcyclotrisiloxane, propene, propanal, benzene and dimethylsilanone. The results demonstrate that the nanoclay significantly alters the degradation behaviour of the PDMS network, modifying the profile of the thermal degradation and reducing the overall rate of volatiles evolution. The results also indicate that the nanoclay promotes the formation of dimethylsilanone and benzene by inducing low levels of radical chain scission.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Degradation and Stability - Volume 94, Issue 9, September 2009, Pages 1548-1557
نویسندگان
, , ,