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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.)

Synthesis and characterization of poly (acrylonitrile-g-lignin) by semi-batch solution polymerization and evaluation of their potential application as carbon materials

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Author(s):
Oliveira, Taila S. [1] ; Brazil, Tayra R. [2] ; Guerrini, Lilia M. [1] ; Rezende, Mirabel C. [2] ; Oliveira, Mauricio P. [1]
Total Authors: 5
Affiliation:
[1] Univ Fed Sao Paulo, Inst Sci & Technol, Lab Polymer Synth, Sao Jose Dos Campos, SP - Brazil
[2] Univ Fed Sao Paulo, Inst Sci & Technol, Lab Technol Polymer & Biopolymer, Sao Jose Dos Campos, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: JOURNAL OF POLYMER RESEARCH; v. 27, n. 11 OCT 23 2020.
Web of Science Citations: 0
Abstract

Understanding the factors that govern the graft polymer structure is of central importance to the development of technologies for converting polymers into carbon materials. In this work, poly (acrylonitrile-g-lignin) was synthesized by one-pot semi-batch solution polymerization of acrylonitrile (AN) with different amounts of Kraft lignin (KL), aiming the carbon materials producing. The synthesis process parameters to obtain poly (acrylonitrile-g-lignin) hybrid polymers from different KL contents were optimized. The purpose of this work was to substitute part of the AN by KL, with the KL amount varying from 0 to 35 wt.% in the copolymer and to investigate the consequent effects on the grafting percent, viscosity, overall monomer conversion, molar masses, thermal properties and carbon yield. The results obtained show the success in preparation of the grafted polymers with KL and that this insertion improved the thermal stability of the polymers and the carbon yield. The molar masses of poly (AN-g-KL) showed direct relationship with the amount of KL used and the grafting percentage. The results showed that the grafting percentage and viscosity of solutions decreases as the concentration of KL increased. The molar mass results and thermal properties showed a direct relationship to the KL concentration in the synthesized copolymer. Among the proportions of AN/KL studied, the copolymer 75/25 (P-25KL) presented the most promising results for application as carbon material precursor. (AU)

FAPESP's process: 18/09531-2 - DEVELOPMENT OF MULTIFUNCTIONAL NANOESTRUCTURED GREEN COMPOSITES BASED ON POLY(FURFURYL ALCOHOL)/GRAFITE NANOSHEETS FOR AEROSPACE APPLICATIONS
Grantee:Mirabel Cerqueira Rezende
Support Opportunities: Regular Research Grants
FAPESP's process: 14/23766-1 - Development of hybrid latexes of lignin/styrene/buthyl acrylate via emulsion and miniemulsion polymerization for carpet production
Grantee:Nigel Roderick Messmer
Support Opportunities: Scholarships in Brazil - Master
FAPESP's process: 13/25619-3 - Synthesis of stimuli-responsive polymer nanoparticles obtained by emulsion and miniemulsion polymerization for production of recycable carpet
Grantee:MAURÍCIO PINHEIRO DE OLIVEIRA
Support Opportunities: Regular Research Grants