Synthesis of Poly(galactaramides) from Alkylene- and Substituted Alkylenediammonium Galactarates |
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Authors: | Donald E Kiely Arvind Vishwanathan Bevan P Jarman Merilyn Manley-Harris |
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Institution: | 1. Shafizadeh Rocky Mountain Center for Wood and Carbohydrate Chemistry , The University of Montana , Missoula, MT, 59812, USA;2. Chemistry Department , The University of Waikato , Private Bag 3105, Hamilton, New Zealand |
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Abstract: | Polyhydroxypolyamides (PHPAs) represent a class of synthetic polyamides derived from aldaric acid and diamine monomer units. This paper describes the synthesis of some poly(galactaramides), a class of polyhydroxypolyamides, that employs alkylene and substituted alkylenediammonium galactarate salts, with 1:1 molar equivalency of the diacid and diamine monomer components, as precursors for the polyamides. The salts were treated with acid/alcohol and then base in order to initiate the polymerization in methanol. The polyamides, labeled as prepolyamides, precipitated from solution and were then subjected to a second polymerization (postpolymerization) in a different solvent to produce a generally larger polyamide, labeled as a postpolyamide. |
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Keywords: | Polyamides Structure-property relationship Polyhydroxypolyamides Poly(galactaramides) |
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