Supermolecular organization of some polyurethanes containing sugar derivatives in the main chain

Abstract

X-ray studies on polyurethanes containing arabinose-based polyurethanes the phase sugar derivatives in the main chain were separation is defined least of all. Glucoseperformed. I t was demonstrated that the and dulcitol-based polymers are intermemicrophase separation of rigid and flexible diates as to their supermolecular organizafragments was dependent on the nature of tion. Supermolecular organization models sugar derivatives. The supermolecular or-for block copolyurethanes under investiganization in disaccharide-based polymers gation were proposed. is the most ordered one. In xylose-and

Selected topics in biomedical polyurethanes. A review

“…The biodegradibility of these polymers was dependent on both the chemical nature of the chains and on the supermolecular organization of the polymeric material [190].…”

Biodegradable polyurethanes for implants. II. In vitro degradation and calcification of materials from poly(ϵ‐caprolactone)–poly(ethylene oxide) diols and various chain extenders

“…[20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35] Such moieties can be based on diols of lactic acid with ethylene diol or diethylene diol, 20 lactic acid and 1,4-butanediol, 32 or butyric acid and ethylene diol. 33 Degradable polyurethanes can also be obtained from monomers containing peptide links; 21,23,24 sugar derivatives; 22,28,30,31 the hydroxy-terminated copolymers L-lactide--caprolactone, glycolide--caprolactone, 25 -caprolactone-co-␦-valerolactone, 26,36 lysine diisocyanate, 25,27,29 poly(ethylene oxide) (PEO), and poly(-caprolactone) (PCL); and amino acid-based chain extenders. 34 This work investigates the degradation and calcification in vitro of experimental linear and biodegradable poly(ester urethane)s and poly(ester ether urethane)s with various hydrophilic-to-hydrophobic ratios for potential applications as tissue adhesion barriers, scaffolds for tissue engineering, and substitutes for cancellous bone grafts.…”

Synthesis of new hydrolyzable polyurethanes from L‐gulonic acid‐derived diols and diisocyanates

“…However, their unlimited abandonment has caused environmental pollution because most synthetic polymers are intruders in Earth's carbon circulation system 1–5. Therefore, naturally occurring polymers and their composites have been noted,6–8 and their repeating units, such as saccharides and amino acids, have also been frequently adopted as renewable starting blocks for potentially biodegradable and/or biomedical polymeric materials (Scheme ) 9–23. Their development is essential for human life in the 21st century with respect to the recycling and circulation of renewable carbon resources.…”