Article ID Journal Published Year Pages File Type
5204507 Polymer Degradation and Stability 2008 16 Pages PDF
Abstract
The poor aging property of the styrene-diene-styrene (SDS) triblock elastomer copolymer hot-melt pressure-sensitive adhesives (HMPSAs) has raised the importance of research on the aging and anti-aging properties of SDS triblock copolymers, such as styrene-butadiene-styrene (SBS) and styrene-isoprene-styrene (SIS). A mechanistic scheme based on the standard scheme for radical chain oxidation, but taking into account the decomposition of the oxidation-induced peroxide, was built. The kinetic equation of oxygen uptake was deduced from the proposed mechanism, which is composed of a set of reasonable parameters. The relationships among the parameters to induction time, maximum oxygen uptake and the maximum oxidation rate were examined. Numerical simulation methods were established to obtain parameters from the experiment data, by which most kinetic equations of oxygen uptake of the ingredients for HMPSAs were numerically fitted and the relativity of the model to the data was discussed. The study results should prove useful for future studies on the anti-aging performance of other materials.
Related Topics
Physical Sciences and Engineering Chemistry Organic Chemistry
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