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Biocatalytic Synthesis of Epoxy Resins from Fatty Acids as a Versatile Route for the Formation of Polymer Thermosets with Tunable Properties
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Coating Technology.
KTH, School of Biotechnology (BIO), Industrial Biotechnology.ORCID iD: 0000-0003-2644-0752
KTH, School of Biotechnology (BIO), Industrial Biotechnology.ORCID iD: 0000-0002-2993-9375
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Coating Technology.ORCID iD: 0000-0003-3201-5138
2016 (English)In: Biomacromolecules, ISSN 1525-7797, E-ISSN 1526-4602, Vol. 17, no 12, p. 4003-4010Article in journal (Refereed) Published
Abstract [en]

The work herein presented describes the synthesis and polymerization of series of bio-based epoxy resins prepared through lipase catalyzed transesterification. The epoxy-functional polyester resins with various architectures (linear, hi branched, and tetra-branched) were synthesized through condensation of fatty acids derived from epoxidized soybean oil and linseed oil with three different hydroxyl cores under bulk conditions. The selectivity of the lipases toward esterification/transesterification reactions allowed the formation of macromers with up to 12 epoxides in the backbone. The high degree of functionality of the resins resulted in polymer thermosets with T-g values ranging from 25 to over 100 degrees C prepared through cationic polymerization. The determining parameters of the synthesis and the mechanism for the formation of the species were determined through kinetic studies by H-1 NMR, SEC, and molecular modeling studies. The correlation between macromer structure and thermoset properties was studied through real-time FTIR measurements, DSC, and DMA.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2016. Vol. 17, no 12, p. 4003-4010
National Category
Biochemistry and Molecular Biology Polymer Technologies
Identifiers
URN: urn:nbn:se:kth:diva-199493DOI: 10.1021/acs.biomac.6b01383ISI: 000389787200017Scopus ID: 2-s2.0-85006106040OAI: oai:DiVA.org:kth-199493DiVA, id: diva2:1066515
Note

QC 20170118

Available from: 2017-01-18 Created: 2017-01-09 Last updated: 2018-06-14Bibliographically approved

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Semlitsch, StefanMartinell, MatsJohansson, Mats

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