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Synthesis, characterisation and water sorption properties of pectin-dehydrogenation polymer (lignin model compound)
B Cathala1, B Chabbert, C Joly
1INRA UPBP, Equipe de biochimie des macromolécules végétales, Reims, France. cathala@reims.inra.fr
Phytochemistry
|February 24, 2001
Abstract:
Coniferyl alcohol was polymerised in the presence of pectin and a pectin-DHP complex was isolated. Characterisation of the complex has demonstrated that DHP (20% wt) was covalently linked by ester bonds to the pectin. The water sorption behaviour of the pectin-DHP complex was determined at several relative vapour pressures and compared with those obtained on pectin, DHP and a blend of both polymers in the same proportion as in the complex. The complex exhibited a lower hydrophilicity resulting from three associated phenomena: grafting, pectin-DHP interactions and the formation of a chemical network.