کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
692380 1460517 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermal, mechanical and structural investigation of copolyimide–silica hybrids containing phosphine oxide
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Thermal, mechanical and structural investigation of copolyimide–silica hybrids containing phosphine oxide
چکیده انگلیسی


• The properties of copolyimide–silica hybrids were investigated.
• The estimated interactions between silica and copolyimide are covalent/hydrogen bonding.
• The changes in materials properties are due to the structural differences of diamines.

In this study, a novel hybrid copolyimide was synthesized from copolyamic acid solutions (PAAs) obtained by the reaction between bis(3-aminophenoxy-4-phenyl)phenylphosphine oxide (m-BAPPO), 3,3′-diaminodiphenyl sulfone (DDS) and 3,3′,4,4′-benzophenone tetracarboxylic dianhydride (BTDA), followed by thermal imidization. Hybrid materials containing 5% SiO2 were synthesized by sol–gel technique. The polyimide–silica hybrids were characterized by Fourier Transform Infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). Thermogravimetric analysis showed that the weight loss of hybrids is shifted to the higher temperature compared to the neat copolyimide. The contact angle measurements confirmed the hydrophobic surface of hybrids. Moreover, the gas permeability measurements were also done to take a step for forthcoming gas separation studies. The tensile modulus and strength of the copolyimides are good.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Progress in Organic Coatings - Volume 86, September 2015, Pages 108–116
نویسندگان
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