Use of DSC in degree of conversion of dimethacrylate polymers: easier and faster than MIR technique

Autor(es)

Alarcon, Rafael Turra ^[1] ; Gaglieri, Caroline ^[1] ; de Oliveira, Arthur Rossi ^[1] ; Bannach, Gilbert ^[1]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ UNESP, Sch Sci, Dept Chem, BR-17033260 Bauru, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY; v. 132, n. 2, p. 1423-1427, MAY 2018.
• Citações Web of Science: 3

Resumo

This work aims to determine the degree of conversion of polymers obtained using diurethane dimethacrylate (UDMA) monomer by two different techniques: differential scanning calorimetry (DSC) and Fourier transform infrared spectroscopy (MIR). The measurements were made in triplicate on both equipment, which resulted in average values for MIR 79.52 +/- 3.57% (camphorquinone photoinitiator) and 78.15 +/- 1.86% (fluorescein photoinitiator) and for DSC 80.85 +/- 1.06 and 78.27 +/- 1.71%. The DSC technique showed higher accuracy and lesser standard deviation. Furthermore, this technique is easier and faster than the MIR, and in situ polymerization is not necessary on the DSC equipment. (AU)

• 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
• Processo FAPESP: 13/09022-7 - Estudos termoanalíticos, síntese e caracterização dos co-cristais sólidos de alguns antibióticos (fluoroquinolonas) com alguns co-formadores
• Beneficiário: Massao Ionashiro
• Modalidade de apoio: Auxílio à Pesquisa - Regular