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

Author(s)

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

Affiliation

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

• Document type: Journal article
• Source: JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY; v. 132, n. 2, p. 1423-1427, MAY 2018.
• Web of Science Citations: 3

Abstract

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)

• FAPESP's process: 17/08820-8 - Synthesis and characterization of biopolymers from vegetable oils and glycerol following the principles of green chemistry
• Grantee: Gilbert Bannach
• Support Opportunities: Regular Research Grants
• FAPESP's process: 13/09022-7 - Thermoanalytical studies, synthesis and characterization of the solid co-crystals of antibiotics (fluoroquinolones) with some co-formers
• Grantee: Massao Ionashiro
• Support Opportunities: Regular Research Grants