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...
Saved in:
Main Authors: | , , |
---|---|
Format: | Article |
Published: |
John Wiley & Sons
2010
|
Subjects: | |
Online Access: | http://eprints.um.edu.my/11682/ |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
my.um.eprints.11682 |
---|---|
record_format |
eprints |
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/ |
_version_ |
1643689114722107392 |
score |
13.211869 |