Rheological and micro-DSC studies on the aqueous mixtures of methylcellulose and ammonium poly(3-thiophene acetic acid)

Lv, Renliang, Luan, Tu, Yu, Fengyuan and Zhang, Hongbin (2011) Rheological and micro-DSC studies on the aqueous mixtures of methylcellulose and ammonium poly(3-thiophene acetic acid). Carbohydrate Polymers, 85 4: 862-868. doi:10.1016/j.carbpol.2011.04.009


Author Lv, Renliang
Luan, Tu
Yu, Fengyuan
Zhang, Hongbin
Title Rheological and micro-DSC studies on the aqueous mixtures of methylcellulose and ammonium poly(3-thiophene acetic acid)
Journal name Carbohydrate Polymers   Check publisher's open access policy
ISSN 0144-8617
1879-1344
Publication date 2011-07
Sub-type Article (original research)
DOI 10.1016/j.carbpol.2011.04.009
Volume 85
Issue 4
Start page 862
End page 868
Total pages 7
Place of publication Oxford, United Kingdom
Publisher Pergamon
Collection year 2012
Language eng
Formatted abstract
In the present work aqueous mixtures of polysaccharide of methylcellulose (MC) and conductive polymer of ammonium poly(3-thiophene acetic acid) (PTAA-NH4) were prepared and the effect of PTAA-NH4 on the rheological and thermal properties of MC solution were investigated. Significant viscous synergism depending on shear rate and concentration of PTAA-NH4 was found for the mixtures, indicating a special interaction between the two amphiphilic polymers of MC and PTAA-NH4. In comparison with pure MC solutions, the mixtures showed much more evident shear thinning characteristics. When the concentration of PTAA-NH4 added was higher than 0.15%, weak gel-like behavior of the mixtures was also observed at low temperatures. In addition, though the gelation and degelation patterns of MC were not changed by the addition of PTAA-NH4, both rheological and calorimetric measurements showed that the presence of PTAA-NH4 shifted the sol-gel transition temperature of MC solution to higher temperature with increasing of the concentration of PTAA-NH4.
Keyword Viscous synergism
Polymer gels
Rheology
Methylcellulose
Polythiophene
Composite Films
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Chemistry and Molecular Biosciences
 
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Created: Tue, 04 Jun 2013, 15:19:18 EST by Fengyuan Yu on behalf of School of Chemistry & Molecular Biosciences