Structural characterization and thermal behaviour of block copolymers of polydimethylsiloxane and polyamide having trichlorogermyl pendant groups

Block copolymers having a pendant trichlorogermyl group as a part of polyamide segment-(CO-R'-CO-NH-Ar-NH-)(x)CO-R'-CO-and polydimethylsiloxane of general formula [(-CO-R'-CO-HN-Ar-NH)(x)-CO-R'-CO-NH(CH(2))(3)SiO(CH(3))(2) ((CH(3))(2)SiO)(y)Si(CH(3))(2)(CH(2))(3) NH-](n) (where R...

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Main Authors: Gill, R., Mazhar, M., Siddiq, M.
Format: Article
Published: John Wiley & Sons 2010
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Online Access:http://eprints.um.edu.my/11682/
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spelling my.um.eprints.116822015-01-07T05:56:55Z http://eprints.um.edu.my/11682/ Structural characterization and thermal behaviour of block copolymers of polydimethylsiloxane and polyamide having trichlorogermyl pendant groups Gill, R. Mazhar, M. Siddiq, M. Q Science (General) Block copolymers having a pendant trichlorogermyl group as a part of polyamide segment-(CO-R'-CO-NH-Ar-NH-)(x)CO-R'-CO-and polydimethylsiloxane of general formula [(-CO-R'-CO-HN-Ar-NH)(x)-CO-R'-CO-NH(CH(2))(3)SiO(CH(3))(2) ((CH(3))(2)SiO)(y)Si(CH(3))(2)(CH(2))(3) NH-](n) (where R' = CH(2)CH(GeCl(3)), CH(CH(3)) CH(GeCl(3)), CH(GeCl(3)) CH(CH(3)); Ar = C(6)H(4), (-C(6)H(3)-CH(3))(2), (-C(6)H(3)-OCH(3))(2), 2,5-(CH(3))(2)-C(6)H(2), C(6)H(4)-O-C(6)H(4)) were prepared by a polycondensation reaction and characterized using CHN and Ge analysis, Fourier transform infrared (FTIR) and (1)H NMR spectroscopy, thermogravimetric analysis (TGA) and molecular weight determination. They have a lamellar structure with weight-average molecular weight in the range 1.21x10(5)-4.79x10(5) gmol(-1). These copolymers display two glass transition temperatures and have anaverage decomposition temperature of 489 degrees C. TGA, FTIR and gas chromatography/mass spectrometry studies indicate that degradation of these block copolymers results in carbon monoxide, oligomeric siloxanes and polyamide fragments. They are thermally stable due to the hydrogen bonded interlinked chains of polyamide, while they absorb water due to the presence of Ge-Cl bonding. (C) 2010 Society of Chemical Industry John Wiley & Sons 2010 Article PeerReviewed Gill, R. and Mazhar, M. and Siddiq, M. (2010) Structural characterization and thermal behaviour of block copolymers of polydimethylsiloxane and polyamide having trichlorogermyl pendant groups. Polymer International, 59 (12). pp. 1598-1605. ISSN 0959-8103
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic Q Science (General)
spellingShingle Q Science (General)
Gill, R.
Mazhar, M.
Siddiq, M.
Structural characterization and thermal behaviour of block copolymers of polydimethylsiloxane and polyamide having trichlorogermyl pendant groups
description Block copolymers having a pendant trichlorogermyl group as a part of polyamide segment-(CO-R'-CO-NH-Ar-NH-)(x)CO-R'-CO-and polydimethylsiloxane of general formula [(-CO-R'-CO-HN-Ar-NH)(x)-CO-R'-CO-NH(CH(2))(3)SiO(CH(3))(2) ((CH(3))(2)SiO)(y)Si(CH(3))(2)(CH(2))(3) NH-](n) (where R' = CH(2)CH(GeCl(3)), CH(CH(3)) CH(GeCl(3)), CH(GeCl(3)) CH(CH(3)); Ar = C(6)H(4), (-C(6)H(3)-CH(3))(2), (-C(6)H(3)-OCH(3))(2), 2,5-(CH(3))(2)-C(6)H(2), C(6)H(4)-O-C(6)H(4)) were prepared by a polycondensation reaction and characterized using CHN and Ge analysis, Fourier transform infrared (FTIR) and (1)H NMR spectroscopy, thermogravimetric analysis (TGA) and molecular weight determination. They have a lamellar structure with weight-average molecular weight in the range 1.21x10(5)-4.79x10(5) gmol(-1). These copolymers display two glass transition temperatures and have anaverage decomposition temperature of 489 degrees C. TGA, FTIR and gas chromatography/mass spectrometry studies indicate that degradation of these block copolymers results in carbon monoxide, oligomeric siloxanes and polyamide fragments. They are thermally stable due to the hydrogen bonded interlinked chains of polyamide, while they absorb water due to the presence of Ge-Cl bonding. (C) 2010 Society of Chemical Industry
format Article
author Gill, R.
Mazhar, M.
Siddiq, M.
author_facet Gill, R.
Mazhar, M.
Siddiq, M.
author_sort Gill, R.
title Structural characterization and thermal behaviour of block copolymers of polydimethylsiloxane and polyamide having trichlorogermyl pendant groups
title_short Structural characterization and thermal behaviour of block copolymers of polydimethylsiloxane and polyamide having trichlorogermyl pendant groups
title_full Structural characterization and thermal behaviour of block copolymers of polydimethylsiloxane and polyamide having trichlorogermyl pendant groups
title_fullStr Structural characterization and thermal behaviour of block copolymers of polydimethylsiloxane and polyamide having trichlorogermyl pendant groups
title_full_unstemmed Structural characterization and thermal behaviour of block copolymers of polydimethylsiloxane and polyamide having trichlorogermyl pendant groups
title_sort structural characterization and thermal behaviour of block copolymers of polydimethylsiloxane and polyamide having trichlorogermyl pendant groups
publisher John Wiley & Sons
publishDate 2010
url http://eprints.um.edu.my/11682/
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score 13.211869