Thermal behavior of some cyclic anhydrides: an important characterization for synthesis in the polymer field

Autor(es)

Gaglieri, Caroline ; de Moura, Aniele ; Alarcon, Rafael T. ; Magri, Raquel ; Bannach, Gilbert

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY; v. N/A, p. 12-pg., 2022-01-23.

Resumo

Polyfunctional cyclic organic anhydrides are widely used in different fields, especially in monomer synthesis and therefore polymers applications. However, there is a lack in the literature about their thermal and spectroscopic characterization, which can lead researchers to a misunderstanding result, interpretation, and even spoiling yield values when there is a mixture between anhydride and its respective acid. Thus, in the present paper, it was evaluated a complete and depth thermal and spectroscopic characterization of some anhydrides (maleic, succinic, phthalic, naphthalic, pyromellitic, and benzophenone). In addition, it was demonstrated how to identify the acid presence, and how to recovery the anhydride (when possible) by thermal analysis. Lastly, it was demonstrated case studies about the importance of knowing the anhydrides properties to verify residual anhydrides in final products, anhydrides recovering as well as parallel reactions in polymer synthesis using some organocatalysts. Furthermore, UV-vis results exhibited absorption bands for each anhydride, which can be helpful for researches about aggregation-induced emission observed in some luminescent materials. (AU)

• Processo FAPESP: 20/00906-3 - Síntese e caracterização de novos biopolímeros a partir do óleo de baru seguindo os princípios da química verde
• Beneficiário: Raquel Magri
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 18/03460-6 - Modificação estrutural de triglicerídeos visando a obtenção de novos monômeros e polímeros por diferentes rotas sintéticas: irradiação de micro-ondas e fotopolimerização
• Beneficiário: Rafael Turra Alarcon
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 17/08820-8 - Síntese e caracterização de biopolímeros a partir de óleos vegetais e glicerol seguindo os princípios da química verde.
• Beneficiário: Gilbert Bannach
• Modalidade de apoio: Auxílio à Pesquisa - Regular