Water-soluble photopolymers for rapid prototyping of cellular materials

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Abstract

Commercial light-sensitive resins for Rapid Prototyping of cellular materials are often unsuitable for different molding techniques because removal of the mold uses thermal decomposition at temperatures of up to 600°C. In this study, a resin formulation based on water-soluble polymers was developed and evaluated regarding its usability as sacrificial mold material. The base monomer dimethylacrylamide gave fast curing and excellent polymer solubility. Methacrylic acid was found to be a useful comonomer to improve mechanical strength and feature resolution. The latter criterion was also improved by adding poly(vinyl pyrrolidone) as filler and by using a hydrolytically cleavable crosslinking agent such as methacrylic acid anhydride. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 97: 2286–2298, 2005

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