Journal
POLYMER DEGRADATION AND STABILITY
Volume 96, Issue 12, Pages 2048-2054Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymdegradstab.2011.10.003
Keywords
Hyperbranched polymers; Bio-based polymers; Biomimetics; Polyarylates; NMR analyses
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Funding
- Comprehensive Support Programs for Creation of Regional Innovation Science and Technology Incubation Program in Advanced Regions Practical Application Research
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A number of multifunctional ABx-type monomers exist in plant metabolites, and studies on the formation of hyperbranching polymers from ABx-type monomers are very significant in the development of bio-related polymeric materials. We established a method for the preparation of well-defined structures in bio-based, hyperbranched (HB) polyarylates by the copolycondensation of caffeic acid (DHCA) as an AB(2)-monomer and p-coumaric acid (4HCA) as an AB-monomer, using the highly efficient catalyst Na2HPO4 to regulate the polymerization speed. H-1 NMR analysis revealed the time course of the formation of the hyperbranching structures, which strongly affected the glass transition and degradation temperatures, as well as the molecular weight and composition. (C) 2011 Elsevier Ltd. All rights reserved.
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