Thermal and Thermo-oxidative Degradations of Polyvinyl Alcohol with 2,5-Furandicarboxylic Acid Acting as A Crosslinking

Thi Ni Pham1, Hoang An Tran1, Thu Phuong Pham1, Ngoc Mai Nguyen1, Quang Tung Tran1, Thi Thuy Tran1,
1 School of Chemical Engineering, Hanoi University of Science and Technology, Ha Noi, Vietnam

Main Article Content

Abstract

This study assesses the thermal and thermo-oxidative for PVA with 2,5-furandicarboxylic acid (FDCA) acting as a crosslinking. PVA-crosslinked-FDCA were synthesized via catalyst-free solid-state esterification at 120 °C. PVA and FDCA with different contents of inorganic phase (1, 5, and 10 % (w/w)) were characterized by Attenuated Total Reflection-Fourier Transform Infrared Spectroscopy. The thermal degradation of the obtained products was studied by Thermal Gravimetric Analysis/ Differential Thermal Gravimetric Analysis under air and nitrogen atmosphere. The effect of FDCA content on thermal and thermo-oxidative stability of PVA was discussed. The thermal stability of PVA was significantly improved, particularly at low FDCA concentrations of 1% and 5%. In these cases, the degradation maximums occurred at 361°C and 375°C, respectively, compared to 300°C for unmodified PVA in a nitrogen atmosphere. Moreover, the degradation maximums occurred at 363°C and 399°C, respectively, compared to 337°C for unmodified PVA in an air atmosphere. In addition, thermal stability of the films under air is even better than that under nitrogen atmosphere.

Article Details

References

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