Roles of Calcium, Zinc, Copper and Titanium Compounds on the Degradation of Polymers

Abstract

In this article, the influences of the metallic filler content upon the thermal degradability of polymer composites such as initial degradation temperature, maximum degradation temperature and char content have been critically reviewed using thermogravimetric analysis. Besides that, the review on the relationship between activation energies of polymer/metal composites, which was obtained from various degrade models, and the content of metallic fillers have also been defined. Other thermal properties such as glass transition temperature (T g ) and melting temperature (T m ) have also been reviewed based on the evaluation of differential scanning calorimetry (DSC) analysis.

Singlet Oxygen Generation, Quenching and Reactivity with Metal Thiolates†

“…These complexes have been used to prevent the degradation of polymers which prompted the early studies of singlet oxygen quenching. Some nickel thiolate complexes have also been used in dyes to prevent fading from 1 O 2 that is generated by the dye (80)(81)(82). The quenching effect is thought to come from either the chelating thiolate or the metal nucleus itself, rather than other ancillary functional groups.…”

Open Linear Polymer Host–Guest Interactions Sensed by Luminescent Silver Nanodots

“…However, theoretically, there should be a selectivity of the linear polymer chain toward its binding moieties, such as counterions. Such a variation in their affinity may significantly change the polymer/biomacromolecule conformation and consequently cause a change in its stability and functionality, such as molecular recognition in biomineralization. − Another interesting question related to the cation–macromolecule interactions is why calcium is the richest mineral in the human body . Therefore, it is still necessary to understand how cations subtly interact with linear polymers.…”