<Note>Thermal Properties of Newly Developed Acetylated Cellulose

この論文は国立情報学研究所の学術雑誌公開支援事業により電子化されました。A novel acetylated cellulose called cellulose oligo-oxymethylene ether acetate, COAc, was prepared by the homogeneous reaction in Paraformaldehyde/DMSO medium. Measurements of thermal deformation for COAc series with different degree of substitution (DS) revealed that the asending deformation for all samples went off at about 170℃. Heat treatment above this temperature caused remarkable change in thermal properties of COAc. A large weight loss of COAc was also observed in the region above this temperature From these results, the side chain of COAc was concluded to decompose above 170℃

The Degree of Christallinity of UV Irradiated Polypropylene

The Degree of Christallinity of UV Irradiated Polypropylen

The Degree of Christallinity of UV Irradiated Polypropylene

The Degree of Christallinity of UV Irradiated Polypropylen