New thermal study of polymerization and degradation kinetics of methylene diphenyl diisocyanate

Author(s)

Estevam da Silva, Jose Eduardo ^[1] ; Alarcon, Rafael Turra ^[1] ; Gaglieri, Caroline ^[1] ; Magdalena, Aroldo Geraldo ^[1] ; da Silva-Filho, Luiz Carlos ^[1] ; Bannach, Gilbert ^[1]

Affiliation

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

• Document type: Journal article
• Source: JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY; v. 133, n. 3, p. 1455-1462, SEP 2018.
• Web of Science Citations: 2

Abstract

This work investigates the thermal polymerization process of a methylene diphenyl diisocyanate (MDI) monomer as well as its thermal degradation following the ICTAC recommendations. MDI monomer is widely used as a synthetic resin in the production of MDF panels, as it provides compaction of the eucalyptus fibers by polymerization. Thermogravimetry/derivative thermogravimetric-differential thermal analysis (TG/DTG-DTA), differential scanning calorimetry, and mid-infrared spectroscopy were used in this study. The polymerization process (An) and degradation (Fn) process exhibited activation energy equal to 149.70 and 80.22 kJ mol(-1), respectively. The combined the FTIR and kinetic information makes it possible to suggest the mechanism reaction, which is an inedited data in literature. (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