ROMP-based biorenewable polymers of norbornene modified with triglycerides or esters from natural buriti oil

Autor(es)

Ferreira, Marcella S. ^[1] ; Fernandes, Henrique ^[1] ; Silva Sa, Jose L. ^[2] ; Carvalho, Jr., Valdemiro P. ^[3] ; Lima-Neto, Benedito S. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Quim Sao Carlos, CP 780, BR-13560970 Sao Carlos, SP - Brazil

^[2] Univ Estadual Piaui, Ctr Ciencias Nat, BR-64002150 Teresina, PI - Brazil

^[3] Univ Estadual Paulista, Fac Ciencias & Tecnol, BR-19060900 Presidente Prudente, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: POLYMER BULLETIN; v. 76, n. 10, p. 5399-5413, OCT 2019.
• Citações Web of Science: 0

Resumo

Two novel monomers, norbornenyl buriti olein (NBO) and norbornenyl buriti ester (NB-FAME), were synthesized by reactions of 5-norbornene-2-carboxylic acid with triglycerides and with methyl esters from buriti oil, respectively. No polymers were produced via ROMP of NBO or NB-FAME using Grubbs second-generation catalyst at 30 degrees C for 1 h. However, copolymers of NBO or NB-FAME in the presence of norbornene (NBE) were obtained raising the initial compositions of the buriti oil-derived monomers from 20 to 80%, under the same conditions. The polymers were insoluble in water and typical organic solvents. In chloroform at 30 degrees C for 48 h, the polymers from synthesis with 80 wt% of buriti oil-derived monomers resulted in a mass gain of 1709% for polymer from NBO and 929 wt% for polymer from NB-FAME. SEM micrographs showed smooth morphologies and non-porous surfaces, which differ from the porous polyNBE. TGA analyses indicated thermal stability up to 200 degrees C. The poly(NBO-co-NBE) and poly(NB-FAME-co-NBE) have been proved to be the final products. (AU)

• Processo FAPESP: 17/06329-5 - Desenvolvimento de complexos de rutênio com aminas como ligantes ancilares para catálise homogênea de reações de polimerização de olefinas cíclicas via metátese
• Beneficiário: Benedito dos Santos Lima Neto
• Modalidade de apoio: Auxílio à Pesquisa - Regular