Kinetic Effects of Glass Ceramic and Silver on Poly(vinyl butyral) Thermal Degradation Using FT-IR. 1

Abstract

The kinetic effect of thermal degradation of poly(vinyl butyral) (PVB)/glass ceramic and PVB/Ag cases was analyzed and discussed using dynamic Fourier Transform Infrared (FT-IR) spectra. The analytical results revealed that both of the inorganic materials in an air environment can greatly affect PVB thermal degradation. The reaction rates and pathways of thermal oxidative degradation of PVB with each inorganic composition were altered significantly. Moreover, for the PVB with ceramic cases, most of the carbon residue was left after the first period of PVB thermal degradation and oxidized at a higher temperature, while the carbon residue of PVB/Ag cases was simultaneously burnt during the main PVB thermal oxidative degradation period. In addition, the catalytic effect of both of the inorganic materials on PVB thermal degradation was demonstrated by calculating the formation rate of the volatile gas in an air environment.

Kinetic investigation of ZrO2, Y2O3, and Ni on poly(vinyl butyral) thermal degradation using nonlinear heating functions

“…These analytical data can be further applied to interpret and demonstrate the mechanism of PVB thermal degradation and binder removal process. 7 In this work, kinetic analysis of thermal degradation of PVB with ZrO 2 , Y 2 O 3 (electrolyte), and Ni (anode) materials was carried out. The effects of these inorganic materials on PVB thermal degradation were evaluated by the proposed analytical algorithm.…”

Optimal Heating Strategies of Polymer Binder Burnout Process Using Dynamic Optimization Scheme

“…Longer optimal burnout times are needed for a smaller sample porosity ( v g0 = 0.1) in both nitrogen and air to satisfy the operating constraints. For these samples, the operating temperature is maintained at ∼450 K for 200 time units in air and goes up to 820 K in the end, while in nitrogen, the temperature is kept at 550 K for 350 time units and finally increases to ∼750 K. Although the burnout reaction in air is faster at lower temperatures than the one in nitrogen, higher temperatures, beyond 800 K, are required to oxidize the carbonaceous residues during the last degradation stage . In addition, the burnout effect of these operating atmospheres is due to the distinct mechanisms of PVB thermal degradation.…”

“…The kinetics of polymer/ceramic thermal degradation was studied associated with several parameters, such as polymer binder composition, degradation gas chemistry, and different ceramic surface interactions . The effects of these parameters on the polymer thermal degradation were analyzed using several analytical techniques, such as thermogravimetry (TG), Fourier transform infrared spectroscopy (FT−IR), mass spectrometry (MS), and gel permeation chromatography (GPC). − The composition effects of ceramic and metal on poly(vinyl butyral) (PVB) binder thermal degradation were discussed by Liau et al The volatile products of the polymer degradation were resolved, and the kinetics of the degradation reaction was analyzed by data measured from these analytical techniques. , The polymer degradation mechanisms and kinetic parameters of the Arrhenius equation were determined in their studies. The surface interactions, such as the catalytic effects of different ceramics on polymer binder degradation, were discussed from the studies. , …”

“…The surface interactions, such as the catalytic effects of different ceramics on polymer binder degradation, were discussed from the studies. 5,7 The investigations of the physical phenomena of the polymer binder removal were focused on the mass transport of the volatile gas during the polymer burnout period. The mechanistic description of the volatile gas diffusing from inside the void space of the ceramic to the body surface was reported.…”

Kinetic Investigation of Photocatalytic Effects on Poly(vinyl butyral) Photodegradation

“…One of the reasons for the generation of the defects is generated by the pressure buildup of the species during the process . Therefore, the research on this topic was focused on the kinetics and the control strategies of the polymer binder degradation. − Besides, the thermal energy consumed in the binder burnout process can be a large part of the operating cost from an economic viewpoint. In addition to the thermal debinding algorithm, several binder removal methods were developed and proposed, such as solvent extraction 1 and supercritical fluid extraction …”