Rheological behavior and stability of cassava starch for ceramic mould binder application

Silica free binder was developed from cassava starch to correspond common ceramic mould binder for reactive metal casting application. Ceramic slurry rheology behavior and stability depends on both binder and refractory materials properties. Starch processing started from granule expansion or swe...

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Main Authors: Alias, Tuti Yasmin, Idris, Mohd Hasbullah, Ahmad, Zuraida, Ourdjini, Ali
Format: Article
Language:English
Published: Trans Tech Publications, Switzerland 2012
Subjects:
Online Access:http://irep.iium.edu.my/26635/1/AMR.576.162_-_ICAMME_12.pdf
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author Alias, Tuti Yasmin
Idris, Mohd Hasbullah
Ahmad, Zuraida
Ourdjini, Ali
author_facet Alias, Tuti Yasmin
Idris, Mohd Hasbullah
Ahmad, Zuraida
Ourdjini, Ali
author_sort Alias, Tuti Yasmin
collection IIUM
description Silica free binder was developed from cassava starch to correspond common ceramic mould binder for reactive metal casting application. Ceramic slurry rheology behavior and stability depends on both binder and refractory materials properties. Starch processing started from granule expansion or swelling, gelatinization, depolymerization via prolong heating and by adding plasticizer, citric acid is to improve viscosity. Pseudoplastic or shear thinning behavior for both binder and slurry were observed starting at 0.13 Pa.s and 2.5 Pa.s respectively. Calcium carbonate (aragonite) slurry from starch binder however, exhibited viscoelastic behavior compare to colloidal silica sol. Ceramic slurry aged as both cationic starch and CaCO3 flocculate and not exfoliate as indicated by increased in the pH of the slurry.
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spelling oai:generic.eprints.org:266352013-08-01T06:06:49Z http://irep.iium.edu.my/26635/ Rheological behavior and stability of cassava starch for ceramic mould binder application Alias, Tuti Yasmin Idris, Mohd Hasbullah Ahmad, Zuraida Ourdjini, Ali TA401 Materials of engineering and construction Silica free binder was developed from cassava starch to correspond common ceramic mould binder for reactive metal casting application. Ceramic slurry rheology behavior and stability depends on both binder and refractory materials properties. Starch processing started from granule expansion or swelling, gelatinization, depolymerization via prolong heating and by adding plasticizer, citric acid is to improve viscosity. Pseudoplastic or shear thinning behavior for both binder and slurry were observed starting at 0.13 Pa.s and 2.5 Pa.s respectively. Calcium carbonate (aragonite) slurry from starch binder however, exhibited viscoelastic behavior compare to colloidal silica sol. Ceramic slurry aged as both cationic starch and CaCO3 flocculate and not exfoliate as indicated by increased in the pH of the slurry. Trans Tech Publications, Switzerland 2012 Article PeerReviewed application/pdf en http://irep.iium.edu.my/26635/1/AMR.576.162_-_ICAMME_12.pdf Alias, Tuti Yasmin and Idris, Mohd Hasbullah and Ahmad, Zuraida and Ourdjini, Ali (2012) Rheological behavior and stability of cassava starch for ceramic mould binder application. Advanced Materials Research, 576. pp. 162-165. ISSN 1022-6680 http://www.scientific.net/AMR.576.318 10.4028/www.scientific.net/AMR.576.162
spellingShingle TA401 Materials of engineering and construction
Alias, Tuti Yasmin
Idris, Mohd Hasbullah
Ahmad, Zuraida
Ourdjini, Ali
Rheological behavior and stability of cassava starch for ceramic mould binder application
title Rheological behavior and stability of cassava starch for ceramic mould binder application
title_full Rheological behavior and stability of cassava starch for ceramic mould binder application
title_fullStr Rheological behavior and stability of cassava starch for ceramic mould binder application
title_full_unstemmed Rheological behavior and stability of cassava starch for ceramic mould binder application
title_short Rheological behavior and stability of cassava starch for ceramic mould binder application
title_sort rheological behavior and stability of cassava starch for ceramic mould binder application
topic TA401 Materials of engineering and construction
url http://irep.iium.edu.my/26635/1/AMR.576.162_-_ICAMME_12.pdf
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