کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
641827 1457015 2013 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis, characterization and gas transport properties of semifluorinated new aromatic polyamides
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Synthesis, characterization and gas transport properties of semifluorinated new aromatic polyamides
چکیده انگلیسی

This manuscript describes the synthesis, characterization and gas transport properties of a series of poly(ether amide)s (PAs) prepared from a new diamine monomer 4,4-bis-[2′-trifluromethyl 4′-(4″-aminophenyl)phenoxy]-biphenyl on reaction with five different aromatic dicarboxylic acids. The polyamides exhibited very good film forming ability, thermal and mechanical properties (448–479 °C for 10% weight loss in air, glass transition temperatures in the ranges of 252–278 °C, tensile strengths up to 99 MPa). PA ‘I’ having tert-butyl group showed highest permeability in barrer for PCO2 = 42.60, PO2 = 10.00, PN2 = 2.10, PCH4 = 1.80. PA ‘II’ containing hexafluroisopropylidene linkage showed highest permselectivity for O2 and N2 gas pair (PO2/PN2 = 7.08) whereas PA ‘IV’ showed highest permselectivity towards CO2 over CH4 (PCO2/PCH4 = 30.25) among the series. Attempt has been made to draw structure–property co-relationship in terms of thermal, mechanical and gas transport properties vs. the polymer repeat unit structures.

Figure optionsDownload as PowerPoint slideHighlights
► Organo-soluble semifluorinated poly(ether amide).
► High gas permeability and selectivity.
► Structure–property correlation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Separation and Purification Technology - Volume 104, 5 February 2013, Pages 138–149
نویسندگان
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