کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1810489 1025563 2012 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fragility and cooperativity concepts in hydrogen-bonded organic glasses
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Fragility and cooperativity concepts in hydrogen-bonded organic glasses
چکیده انگلیسی

Molecular dynamics at the glass transition of three lactose/oil glassy systems have been investigated according to the cooperativity and fragility approaches. From Donth's approach, the cooperativity length is estimated by modulated temperature calorimetric measurements. Results reveal that modification of the disaccharide by oil leads to increase the disorder degree in the lactose, the size of the cooperative domains and the fragility index. These particular hydrogen-bonded organic glasses follow the general tendency observed on organic and inorganic polymers: the higher the cooperativity length, the higher the value of the fragility index at Tg.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 407, Issue 17, 1 September 2012, Pages 3561–3565
نویسندگان
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