Thermal decomposition of cellulose/synthetic polymer blends containing grafted products. 1. Cellulose/poly(methyl methacrylate) blends

Abstract

The homogeneous grafting of methyl methacrylate onto cellulose was carried out in a dimethyl sulfoxide (DMSO)/paraformaldehyde solvent system. The grafted products were added to cellulose/poly-(methyl methacrylate) (PMMA) blends as compatibilizers. The thermal decomposition behavior of the blends was investigated. The thermal stability of the blends with higher grafted product content was lower by more than 100 °C than that of the blends without grafted product. The values of accessibility for the former blends were larger than those of the latter and a cellulose sample cast from a DMSO solution. The microphase-separated structures of the former blends were finer than those of the latter. Dynamic mechanical measurements and differential scanning calorimetry were performed to estimate the glass transition temperatures (Te) of the blends. The variation in Tt was smaller than that in characteristic temperatures determined by the thermal decomposition measurement. The difference in thermal decomposition behavior was correlated to that in compatibility. Thermal decomposition measurements were effective for estimating the compatibility in cellulose/PMMA blends containing grafted products.* The viscoeity-average molecular weight (Mv) of backbone cellulose

Fluorescence control of chitin and chitosan fabricatedviasurface functionalization using direct oxidative polymerization

“…to polysaccharides, such as cellulose, also resulted in a decrease in the thermal stability of the polysaccharide. [47][48][49][50][51] The thermal stability of the polymer depends signicantly on its crystallinity.…”

Thermal Decomposition of Cellulose/Synthetic Polymer Blends Containing Grafted Products III. Cellulose/Poly(methyl acrylate) Blends

“…1 • 2 The grafted products with different graft copolymer contents are necessary to correlate thermal stability with compatibility more precisely. In a series of our work, 5 • 6 the grafted products themselves were added to the cellulose/synthetic polymer blends as compatibilizers to vary graft copolymer content widely. In this work, methyl acrylate (MA) grafted cellulose products were added to cellulose/poly(methyl acrylate) (PMA) blends.…”

Synthesis, characterization, and reactivity ratios of copolymers derived from 4‐nitrophenyl acrylate and n‐butyl methacrylate

“…The temperature gradually increases down the series from the first member to the fourth member when the percentage weight loss values are 10, 25, and 50. The copolymer systems containing BMA was investigated by TG and DSC and the thermal stability of the polymer blends containing cellulose and PMMA have also been reported in the literature 23, 24…”

“…The copolymer systems containing BMA was investigated by TG and DSC and the thermal stability of the polymer blends containing cellulose and PMMA have also been reported in the literature. 23,24 The glass transition temperature (T g ) of poly(NPAco-BMA) with a composition of 0.44:0.56 was found to be 97.2°C. The T g of poly(BMA) with atactic and isotactic configurations are reported to be 20 and Ϫ24°C, respectively.…”