Journal
DESIGNED MONOMERS AND POLYMERS
Volume 20, Issue -, Pages 157-166Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/15685551.2016.1231038
Keywords
Biobased polyesters; sustainable polyesters; aliphatic polyesters; sugar based polyesters; acetalized alditols; isosorbide; D-glucose; D-mannose; D-sorbitol; D-glucitol
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Funding
- MINECO of Spain
- AGAUR [MAT2012-38044-C03-03, 2009SGR1469]
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Three series of polyalkanoates (adipates, suberates and sebacates) were synthesized using as monomers three sugar-based bicyclic diols derived from D-glucose (Glux-diol and isosorbide) and D-mannose (Manx-diol). Polycondensations were conducted in the melt applying similar reaction conditions for all cases. The aim was to compare the three bicyclic diols regarding their suitability to render aliphatic polyesters with enhanced thermal and mechanical properties. The ensuing polyesters had molecular weights (M-w) in the 25,000-50,000 g mol(-1) range with highest values being attained for Glux-diol. All the polyesters started to decompose above 300 degrees C and most of them did not display perceivable crystallinity. On the contrary, they had glass transition temperatures much higher than usually found in homologous polyesters made of alkanediols, and showed a stress-strain behavior consistent with their T-g values. Glux-diol was particularly effective in increasing the T-g and to render therefore polyesters with high elastic modulus and considerable mechanical strength.
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