Submitted to: Book Chapter
Publication Type: Book / Chapter
Publication Acceptance Date: June 1, 2004
Publication Date: November 1, 2004
Citation: Fishman, M.L., Coffin, D.R. 2005. Biodegradable films from pectin/starch and pectin/poly(vinyl alcohol). Book Chapter in Polymer Biocatalysis and Biomaterials. Ed. H. N. Cheng, R. Gross, ACS Symposium Series. Volume 900. American Chemical Society Publ., Washington D.C. p.119-140. 2005. Technical Abstract: Blends of pectin and high amylose starch, and pectin and poly(vinyl alcohol) (PVOH), both with and without added plasticizer, were used to make solution cast films and characterized to quantify their properties. They were investigated using dynamic mechanical analysis, scanning electron microscopy, tensile testing, FT-IR, oxygen permeability, and solubility studies. The films were found to have high modulus and strength values, with the properties depending strongly on composition. Glycerol was found to be effective as a plasticizer, and PVOH was shown to impart ductility to the pectin. SEM showed significant changes in morphology were seen with changes in composition. Hydrogen bonding of pectin in the film is affected by temperature and glycerol. Oxygen permeability of these films is much lower than found in commercial plastic.