کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5203322 | 1381927 | 2009 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of clay organomodifiers on degradation of polyhydroxyalkanoates
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Ammonium surfactants are commonly used as clay organomodifiers in nanocomposites. Their effect on the thermal- and thermo-mechanical degradation of polyhydroxyalkanoates (PHAs) is reported. Two poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) grades were tested and compared to polyhydroxybutyrate (PHB). Thermal stabilities were determined from thermogravimetric data and determination of molecular weight changes after processing was performed. The data revealed that all surfactants enhance the PHBV degradation. The results also highlight the preponderant effect of the initial Mw rather than the HV content on the thermal stability. The thermo-mechanical study confirmed the role of surfactants and their different behaviour towards PHBV degradation. This study demonstrates that all surfactants enhance the PHA degradation since their decomposition products most likely act as catalytic agents.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Degradation and Stability - Volume 94, Issue 5, May 2009, Pages 789-796
Journal: Polymer Degradation and Stability - Volume 94, Issue 5, May 2009, Pages 789-796
نویسندگان
Perrine Bordes, Elodie Hablot, Eric Pollet, Luc Avérous,