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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Enzymatic syntheses of unsaturated polyesters based on isosorbide and isomannide

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Author(s):
Naves, Alliny F. [1] ; Fernandes, Henrique T. C. [1] ; Immich, Ana P. S. [1] ; Catalani, Luiz H. [1]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, Inst Quim, Dept Quim Fundamental, BR-05513970 Sao Paulo - Brazil
Total Affiliations: 1
Document type: Journal article
Source: JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY; v. 51, n. 18, p. 3881-3891, SEP 15 2013.
Web of Science Citations: 23
Abstract

The search for materials produced from renewable sources aiming at the substitution of petroleum-based derivates is an area of intense investigation. In this work, the enzymatic copolymerization of isosorbide or isomannide with diethyl adipate and fractions of different unsaturated diesters (diethyl itaconate, diethyl fumarate, diethyl glutaconate, and diethyl hydromuconate) were examined using CAL-B as catalyst. The polyesters prepared using one-step syntheses were characterized by SEC, NMR, and MALDI-TOF MS. In addition, syntheses with linear diols were carried out in bulk to evaluate the reactivity of cyclic diols in producing unsaturated polyesters using enzymatic catalysis, as well as to evaluate the occurrence of addition side reactions on the double bonds. Isosorbide and isomannide yielded unsaturated polymers with M-w values in the order of 4,000-16,000 when fumarate or glutaconate esters were added in 5 mol % ratio against adipate. In all cases MALDI-TOF confirmed the presence of unsaturated units. Although these polyesters have unreacted double bonds they are prone to crosslinking and ready to further functionalization, like anchoring bioactive molecules. (C) 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2013, 51, 3881-3891 (AU)

FAPESP's process: 08/06445-6 - New Biodegradable Polyesters by Enzymatic Synthesis: Use of Monomers Based on Renewable Sources.
Grantee:Alliny Ferreira Naves
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 05/02855-7 - Synthetic polymers applied to biomaterials
Grantee:Luiz Henrique Catalani
Support type: Research Projects - Thematic Grants
FAPESP's process: 11/18017-1 - DEVELOPMENT OF ELECTROSPUN POLYMERIC MATRICES FOR THE REGENERATION OF TYMPANIC MEMBRANE PERFORATIONS.
Grantee:Ana Paula Serafini Immich Boemo
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 11/21442-6 - Synthetic and natural polymers applied to tissue engineering
Grantee:Luiz Henrique Catalani
Support type: Research Projects - Thematic Grants