Thermal decomposition of cellulose/synthetic polymer blends containing grafted products. V. Cellulose/polystyrene blends

Abstract

Homogeneous grafting of styrene onto cellulose was carried out in a dimethylacetamide/lithium chloride solvent system. The grafted products were added to cellulose/polystyrene (PS) blends as compatibilizers. The thermal decomposition behavior of the blends was investigated by thermogravimetry. The thermal stability of the blends decreased with an increase in grafted product content. The crystallinity of the blends decreased with grafted product content. The microphase-separated structures of the blends became finer with grafted product content. The glass transition temperatures for cellulose and PS in the blends were lowered with grafted product content. Differences in thermal decomposition behavior of the blends were correlated with compatibility. Thermogravimetry was effective for compatibility estimation in cellulose/PS blends containing grafted products.

Photoluminescence Control of Cellulose via Surface Functionalization Using Oxidative Polymerization

“…In summary, the TG, DTG, and DTA curves indicate that the grafting of (3HT/F) copolymers to cellulose results in a less thermally stable material. A similar tendency has been reported for cellulose grafted with vinyl monomers such as methyl acrylate, methyl methacrylate, and 2-hydroxyethyl methacrylate, among others; a decrease in the thermal stability of the grafted cellulose was found. ,,− The crystallinity of cellulose was also found to be affected significantly by the thermal stability of the cellulose. − The grafting of the (3HT/F) copolymers to cellulose increases the amorphous regions of cellulose resulting in altered crystallinity; as a consequence, this change in crystallinity leads to a decrease in the thermal stability of the material.…”