Journal
BIOMACROMOLECULES
Volume 1, Issue 1, Pages 61-67Publisher
AMER CHEMICAL SOC
DOI: 10.1021/bm005503b
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A novel method has been developed to produce open-pore chitin matrixes. Chitin solutions were loaded with calcium carbonate (CaCO3) crystals and the mixture cast to form gels. The CaCO3-chitin gels were submerged in 1 N HCl solution to produce highly porous matrixes with good water vapor permeability, water uptake profile, and enhanced mechanical properties, The open-pore system is obtainable because CaCO3 loaded into the chitin gel reacts with 1 N HCl solution to produce gaseous carbon dioxide. Evolution of carbon dioxide during the reaction results in continuous pore structures from the matrix' bulk to surface. When the concentration of CaCO3 loaded into the chitin gel is controlled, defined homogeneous pores measuring 100-500 and 500-1000 mum, with porosities of approximate to 76% and 81%. respectively, can be produced.
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