The cationic polymerization of tung oil and its fatty-acid methyl ester

Autor(es)

Lacerda, Talita M. ^[1] ; Gandini, Alessandro ^[2]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Lorena Sch Engn, Biotechnol Dept, BR-12602810 Sao Paulo - Brazil

^[2] Univ Grenoble Alpes, LGP2, F-38000 Grenoble - France

• Tipo de documento: Artigo Científico
• Fonte: INDUSTRIAL CROPS AND PRODUCTS; v. 157, DEC 1 2020.
• Citações Web of Science: 1

Resumo

The use of renewable resources for the synthesis of macromolecular materials is a very promising strategy, which opens the way to the production of new polymers with a reduced environmental impact. Vegetable oils have been considered for this purpose for decades, with many well established commercial materials. Herein, tung oil and its major fatty acid methyl ester were submitted for the first time to cationic polymerization using trifluoroacetic acid as an initiator of moderate strength. While crude tung oil quickly polymerized to form crosslinked gel-like materials, the cationic polymers from methyl alpha-eleostearate remained soluble even when high concentrations of acid were used, thus allowing its progress to be followed by NMR spectroscopy. Besides gathering information on the properties of the isolated polymers, it was therefore possible to access some important mechanistical aspects related to both the cationic polymerization and the cyclization of the conjugated trienes borne by the tung oil backbone. (AU)

• Processo FAPESP: 18/24407-6 - Estratégias sustentáveis para o desenvolvimento de novos materiais macromoleculares
• Beneficiário: Talita Martins Lacerda
• Modalidade de apoio: Auxílio à Pesquisa - Pesquisador Visitante - Internacional
• Processo FAPESP: 17/16062-6 - Estudo da polimerização catiônica de óleos vegetais insaturados e aplicação como matriz em biocompósitos com celulose bacteriana
• Beneficiário: Talita Martins Lacerda
• Modalidade de apoio: Auxílio à Pesquisa - Regular