Thermal degradation of model compounds with blocked hemiacetal group related to (4‐O‐methyl‐ D ‐glucurono)‐ D ‐xylan | Zendy

Šimkovic Ivan | Zendy; Hirsch Ján | Zendy; Ebringerová Anna | Zendy; Königstein Jozef | Zendy

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Thermal degradation of model compounds with blocked hemiacetal group related to (4‐O‐methyl‐ D ‐glucurono)‐ D ‐xylan

Author(s) -

Šimkovic Ivan,

Hirsch Ján,

Ebringerová Anna,

Königstein Jozef

Publication year - 1987

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.1987.070330503

Subject(s) - pyranose , xylan , thermal stability , chemistry , thermogravimetry , polysaccharide , uronic acid , degradation (telecommunications) , isothermal process , hemiacetal , hemicellulose , organic chemistry , lignin , thermodynamics , inorganic chemistry , telecommunications , physics , computer science

Reduced (4‐O‐methyl‐ D ‐glucurono)‐ D ‐xylan and nine methylglycosides related to this polysacharide were studied by dynamic and isothermal thermogravimetry. It could be stated from the results that the thermal stability of saccharides is increasing with increasing number of pyranose units. The models related to (4‐O‐methyl‐ D ‐glucurono)‐D‐xylan are more thermally stable than the corresponding hexoglycanic models. Rates of gasification of models containing uronic acid methylesters are higher than those of neutral methylglycosides. The rate of polysaccharide gasification was the highest one from all models studied. The supramolecular structure of polysaccharide is dramatically influencing the course of thermal degradation.

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