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Issue 19, 2013
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Calcium sulfate hemihydrate-mediated crystallization of gypsum on Ca2+-activated cellulose thin films

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Abstract

Spin-coated cellulose thin films have been used as model substrates to investigate the crystallization of calcium sulfate dihydrate (gypsum) under industrially relevant conditions using highly concentrated dispersions of calcium sulfate hemihydrate (bassanite). Pre-treatment of the films by regeneration in aqueous solutions of Ca2+ promotes gypsum crystallization specifically on the polysaccharide substrate in the presence of bassanite or in control solutions comprising supersaturated calcium sulphate. The results demonstrate a facile procedure in which inert films of cellulose are rendered active with regard to gypsum nucleation and growth, and could have important applications in the processing and general application of Plaster of Paris-based materials and products.

Graphical abstract: Calcium sulfate hemihydrate-mediated crystallization of gypsum on Ca2+-activated cellulose thin films

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Publication details

The article was received on 05 Nov 2012, accepted on 05 Dec 2012 and first published on 05 Dec 2012


Article type: Paper
DOI: 10.1039/C2CE26814K
Citation: CrystEngComm, 2013,15, 3793-3798
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    Calcium sulfate hemihydrate-mediated crystallization of gypsum on Ca2+-activated cellulose thin films

    T. Nissinen, M. Li, N. Brielles and S. Mann, CrystEngComm, 2013, 15, 3793
    DOI: 10.1039/C2CE26814K

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