new approach to soluble polyaniline and its copolymers with toluidines
Homopolymers of aniline, toluidines and their copolymers were synthesized by chemical oxidative polymerization using different ratios of monomers in the feed in H₂SO₄ medium. The synthesized polymers were characterized by employing Fourier transform infrared, UV-visible, proton nuclear magnetic reso...
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Published in | Journal of applied polymer science Vol. 117; no. 3; pp. 1350 - 1360 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Hoboken
Wiley Subscription Services, Inc., A Wiley Company
01.08.2010
Wiley |
Subjects | |
Online Access | Get full text |
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Summary: | Homopolymers of aniline, toluidines and their copolymers were synthesized by chemical oxidative polymerization using different ratios of monomers in the feed in H₂SO₄ medium. The synthesized polymers were characterized by employing Fourier transform infrared, UV-visible, proton nuclear magnetic resonance, X-ray diffraction techniques for understanding the details of the structure of the synthesized polymers. Morphological, thermal, and electrical conductivity of the as synthesized polymers were also studied by employing scanning electron microscopy, thermogravimetric analysis, and dc electrical conductivity, respectively. From the SEM images rod shaped nanoparticles were observed in PANI and spherical shaped nanoparticles were observed for copolymers. A three-step thermal degradation was observed for all the polymers. The electrical conductivities of the copolymers were less compared with PANI, and at higher temperature the conductivities of all the polymers were more or less same. It was observed that yield and intrinsic viscosity of copolymers are not regularly dependant on monomer concentration in the feed. The copolymers show better solubility but lower conductivity than PANI. Properties of homopolymers and copolymers are also pointed out. |
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Bibliography: | http://dx.doi.org/10.1002/app.31745 ArticleID:APP31745 ark:/67375/WNG-7J12CT5J-L istex:9A6410D841A00913FF4A17BC6EC532C5A9E84362 ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0021-8995 1097-4628 1097-4628 |
DOI: | 10.1002/app.31745 |