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Preparation of anatase nano‐TiO 2 /xanthan gum composite (NTX) and rheological study of the interior wall coatings using NTX as additive

Preparation of anatase nano‐TiO 2 /xanthan gum composite (NTX) and rheological study of the... Purpose – The purpose of this paper is to develop a kind of novel and high‐performance rheological additive, an eco‐friendly composite of anatase nano‐TiO 2 particles and xanthan gum (NTX), for interior wall coatings. Design/methodology/approach – NTX was prepared through heating and refluxing the mixture of TiO 2 hydrosol and xanthan gum, and five interior wall coating samples were fabricated with different NTX contents. The morphology of nano‐TiO 2 hydrosol and NTX were characterised with TEM, and the stability and rheological properties of these coating samples were studied. Findings – TEM images showed a core‐shell structure of NTX, and that nano‐TiO 2 particles in it were encapsulated by xanthan gum, which was anticipated to weaken Van der Waals force among nano‐TiO 2 particles thus preventing the aggregation of nano‐particles. All of the five coating samples were found to be non‐Newtonian pseudo‐plastic fluid, and showed excellent stability and thixotropic property. Research limitations/implications – This paper focused on the preparation, the characterisation of NTX additive and the study of the rheological behaviours of the coating samples with NTX. Some other aspects, such as coating durability, photocatalytic ability and film properties, will be studied in the future. Practical implications – It was proven that NTX was an effective eco‐friendly rheological additive for interior wall coatings. Consequently, this paper threw light on developing eco‐friendly interior wall coatings. Originality/value – A kind of novel and effective rheological additive was developed for interior wall coatings in the study reported in the paper. A method was also developed to introduce functional nano‐particles into coating in a good dispersion state. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Pigment & Resin Technology Emerald Publishing

Preparation of anatase nano‐TiO 2 /xanthan gum composite (NTX) and rheological study of the interior wall coatings using NTX as additive

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References (19)

Publisher
Emerald Publishing
Copyright
Copyright © 2011 Emerald Group Publishing Limited. All rights reserved.
ISSN
0369-9420
DOI
10.1108/03699421111147335
Publisher site
See Article on Publisher Site

Abstract

Purpose – The purpose of this paper is to develop a kind of novel and high‐performance rheological additive, an eco‐friendly composite of anatase nano‐TiO 2 particles and xanthan gum (NTX), for interior wall coatings. Design/methodology/approach – NTX was prepared through heating and refluxing the mixture of TiO 2 hydrosol and xanthan gum, and five interior wall coating samples were fabricated with different NTX contents. The morphology of nano‐TiO 2 hydrosol and NTX were characterised with TEM, and the stability and rheological properties of these coating samples were studied. Findings – TEM images showed a core‐shell structure of NTX, and that nano‐TiO 2 particles in it were encapsulated by xanthan gum, which was anticipated to weaken Van der Waals force among nano‐TiO 2 particles thus preventing the aggregation of nano‐particles. All of the five coating samples were found to be non‐Newtonian pseudo‐plastic fluid, and showed excellent stability and thixotropic property. Research limitations/implications – This paper focused on the preparation, the characterisation of NTX additive and the study of the rheological behaviours of the coating samples with NTX. Some other aspects, such as coating durability, photocatalytic ability and film properties, will be studied in the future. Practical implications – It was proven that NTX was an effective eco‐friendly rheological additive for interior wall coatings. Consequently, this paper threw light on developing eco‐friendly interior wall coatings. Originality/value – A kind of novel and effective rheological additive was developed for interior wall coatings in the study reported in the paper. A method was also developed to introduce functional nano‐particles into coating in a good dispersion state.

Journal

Pigment & Resin TechnologyEmerald Publishing

Published: Jul 5, 2011

Keywords: Anatase nano‐TiO 2 ; Xanthan gum; Eco‐friendly; Core‐shell structure; Rheological properties; Additives; Coatings technology

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