FT NIR Raman studies of alginic acid-benzimidazole polymer composite

被引：4
|
作者：
Polomska, M. [1 ]
Pogorzelec-Glaser, K. [1 ]
Pawlaczyk, C. [1 ]
Pietraszko, A. [2 ]
机构：
[1] Polish Acad Sci, Inst Mol Phys, Poznan, Poland
[2] Polish Acad Sci, Inst Low Temp & Struct Res, Wroclaw, Poland
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2011年 / 79卷 / 04期
关键词：
Biodegradable anhydrous polymer electrolyte; Alginic acid; Benzimidazole; Electric conductivity; PROTON-CONDUCTING MEMBRANE; FUEL-CELLS; VIBRATIONAL-SPECTRA; AB-INITIO; SPECTROSCOPY; IMIDAZOLE; MOBILITY; SOLVENTS;
D O I：
10.1016/j.saa.2010.08.055
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
New bio-inspired polymer composites of alginic acid and benzimidazole were created and characterized by FT NIR Raman spectroscopy. The obtained films with 1:0.5, 1:1 and 1:1.5 molar ratio are homogeneous, with good mechanical properties. Raman spectra recorded at room temperature revealed that the obtained films are a new compound with a different molecular structure and physical properties compared with pure substrates: alginic acid and benzimidazole. Raman band related to vibration of COOH entity at 1740 cm(-1) of alginic acid disappears in the alginic acid:benzimidazole composites, in which new Raman band related to COO(-) was found. Additionally, characteristic lines observed in polymer composites which may be associated with vibrations of NH groups, can be attributed to the linking of proton to deprotonated N atom in benzimidazole group. Possibility of such proton exchange is a promising property which might facilitate the application of obtained composites to anhydrous proton conducting electrolytes in fuel cells. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：797 / 800
页数：4
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