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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/10739

Title: Synthesis of well-defined hyperbranched polymers bio-based on multifunctional phenolic acids and their structure-thermal property relationships
Authors: Wang, Siqian
Tateyama, Seiji
Kaneko, Daisaku
Ohki, Shin-ya
Kaneko, Tatsuo
Keywords: Hyperbranched polymers
Bio-based polymers
NMR analyses
Issue Date: 2011
Publisher: Elsevier
Magazine name: Polymer Degradation and Stability
Volume: 96
Number: 12
Start page: 2048
End page: 2054
DOI: 10.1016/j.polymdegradstab.2011.10.003
Abstract: 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-definedstructures 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 Na_2HPO_4 to regulate the polymerization speed. ^1H 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.
Rights: NOTICE: This is the author's version of a work accepted for publication by Elsevier. Siqian Wang, Seiji Tateyama, Daisaku Kaneko, Shin-ya Ohki, Tatsuo Kaneko, Polymer Degradation and Stability, 96(12), 2011, 2048-2054, http://dx.doi.org/10.1016/j.polymdegradstab.2011.10.003
URI: http://hdl.handle.net/10119/10739
Material Type: author
Appears in Collections:c10-1. 雑誌掲載論文 (Journal Articles)

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