Open AccessUV-Vis and XRD investigation of graphite-doped poly(acrylic) acid membranes
Author(s) -
Mihai Todica,
Traian Stefan,
Simion Şimon,
I. Balasz,
Liviu DARABAN
Publication year - 2014
Publication title -
turkish journal of physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.169
H-Index - 26
eISSN - 1303-6122
pISSN - 1300-0101
DOI - 10.3906/fiz-1305-16
Subject(s) - membrane , materials science , graphite , absorbance , doping , dopant , acrylic acid , polymer , absorption (acoustics) , chemical engineering , polyelectrolyte , polymer chemistry , composite material , chromatography , chemistry , copolymer , biochemistry , optoelectronics , engineering
Possible modification of the structure of poly(acrylic) acid (PAA) membranes doped with graphite was investigated by UV-Vis and XRD techniques. The pure PAA membranes were characterized by good transparency in the domain 250-700 nm, with maximum absorption at 207 nm. The absorbance of membranes increased significantly after doping with graphite. The XRD patterns of pure membranes showed a low degree of order of the polymeric matrix. Some modifications of the parameters of the ordered domains of the polymer and of the graphite appeared at high concentrations of the dopant.
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