Properties of block (co)polymers of methyl methacrylate and perfluorinated polyphenylenegermane

Hybrid (co)polymers of linear-dendritic structure were prepared by radical polymerization of methyl methacrylate in the presence of superbranched perfluorinated polyphenylenegermane to high conversions. The molecular-weight characteristics and the sorption capacity of the products were examined. The glass transition point, elastic modulus, mechanical loss factor, and tensile strength of the copolymers obtained were determined.     

Influence of Thermal Aging Conditions on the Molecular Characteristics of Cellulose and Mechanical Properties of Paper Thereof

Molecular characteristics of cellulose during accelerated aging were studied over wide temperature and time ranges. Also studied were mechanical properties of model samples of paper made of cotton, sulfate, and sulfite cellulose. Interrelation of the molecular characteristics of cellulose and strength properties of paper was investigated.