Optimization of rheological properties of photopolymerizable alumina suspensions for ceramic microstereolithography

Goswami, Ankur and Ankit, K and Balashanmugam, N and Umarji, Arun M and Madras, Giridhar (2014) Optimization of rheological properties of photopolymerizable alumina suspensions for ceramic microstereolithography. In: CERAMICS INTERNATIONAL, 40 (2). pp. 3655-3665.

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Abstract

Microstereolithography (MSL) is a rapid prototyping technique to fabricate complex three-dimensional (3D) structure in the microdomain involving different materials such as polymers and ceramics. The present effort is to fabricate microdimensional ceramics by the MSL system from a non-aqueous colloidal slurry of alumina. This slurry predominantly consists of two phases i.e. sub-micrometer solid alumina particles and non-aqueous reactive difunctional and trifunctional acrylates with inert diluent. The first part of the work involves the study of the stability and viscosity of the slurry using different concentrations of trioctyl phosphine oxide (TOPO) as a dispersant. Based on the optimization, the highest achievable solid loadings of alumina has been determined for this particular colloidal suspension. The second part of the study highlights the fabrication of several micro-dimensional alumina structures by the MSL system. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

Item Type:	Journal Article
Publication:	CERAMICS INTERNATIONAL
Publisher:	ELSEVIER SCI LTD
Additional Information:	Copyright for this article belongs to the ELSEVIER SCI LTD, ENGLAND
Keywords:	Microstereolithography; Alumina; Rheology; Ceramic processing; Fractal analysis
Department/Centre:	Division of Chemical Sciences > Materials Research Centre Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited:	20 Feb 2014 05:12
Last Modified:	20 Feb 2014 05:12
URI:	http://eprints.iisc.ac.in/id/eprint/48407

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