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Article Abstract
Thermal kinetic parameters are important for establishing the relationship between the aging process, time, and temperature, which would help predict the thermal aging lifetime and stability in the application of polymer materials. We developed a multi-channel detecting device, which provided an efficient method for IR spectrum measurement. The thermal aging process of polyvinyl butyral (PVB) at several constant temperatures (100 °C, 110 °C, 120 °C, 135 °C, and 150 °C) had been studied by the multi-channel infrared reaction device. The kinetic parameters () were calculated from the absorbance intensity of -C-O-, -C[double bond, length as m-dash]O, -CH, and -OH. The -OH proved to be the active site of PVB during thermal aging, and a possible thermal aging mechanism of PVB was proposed. We proved the method using a combination of a multi-channel reaction device and FTIR was suitable to study the aging mechanism and kinetics of polymers.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10520402 | PMC |
| http://dx.doi.org/10.1039/d3ra03932c | DOI Listing |
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