Zobrazeno 1 - 10
of 59
pro vyhledávání: '"B. E. Geller"'
Autor:
O. V. Khoroneko, B. E. Geller
Publikováno v:
Fibre Chemistry. 41:123-127
The effect on the dynamics of ripening of viscose in the presence of carbonyl-containing compounds: hexamethylenetetramine (urotropin), sodium sulfoxylate (Rongalite C), and dimethylolurea, was investigated. A hypothesis was advanced concerning the p
Autor:
Yu. M. Mozheiko, E. A. Rogova, B. E. Geller, S. G. Alekseeva, V. K. Ol’khovik, E. V. Kovaleva, N. N. Gorodetskii
Publikováno v:
Fibre Chemistry. 41:22-25
High-molecular-weight copolyesters based on ethylene glycol, tetraphthalic and 4,4′-biphenyl dicarboxylic acids containing up to 10.3 mole % of a second component were synthesized in the presence of homo- and heterogeneous catalysts. It was found t
Publikováno v:
Fibre Chemistry. 38:365-369
The viscosity properties of melts of fibre-forming polypropylene (PP) and poly(butylene terephthalate) blends were investigated in the entire range of ratios at different stresses and shear rate gradients at 230–250°C. It was shown that melts of f
Publikováno v:
Fibre Chemistry. 38:7-12
In studying the dynamics of drying of PBT and PET granulate, the parameters of the process that ensure sufficient process stability of their melts were determined. It was found that the rate of self-ordering of structural elements in the polymer subs
Autor:
L. A. Shcherbina, B. E. Geller
Publikováno v:
Fibre Chemistry. 34:250-253
The possibility of synthesizing poly(AN-co-VA-co-AMPS) fibre-forming copolymer in a 51.5% aqueous solution of sodium thiocyanate is demonstrated. Slowing of the rate of polymerization occurs when MAA is replaced by its isomeric analog VA as a result
Autor:
B. E. Geller
Publikováno v:
Fibre Chemistry. 34:151-161
Sixty years of experience in manufacture of fibres from acrylonitrile polymers and copolymers suggest favorable prospects for the development of this kind of textile stock. The characteristics of the primary and supermolecular structure of this class
Publikováno v:
Fibre Chemistry. 32:214-220
The kinetics of heterophase saponification of PAN fibre based on poly(AN-co-MA-co-ItA) was investigated at different temperatures and it was shown that the apparent activation energy of this process decreases with an increase in the concentration of
Publikováno v:
Fibre Chemistry. 32:111-115
The integral rate and induction period for synthesis of poly(AN-co-MA-co-AMPS) in NaSCN (ASST) was found to be a function of the acidity of the reaction medium. The effect of the acidity of the reaction medium on the primary structure (concentration
Autor:
B E Geller
Publikováno v:
Russian Chemical Reviews. 65:725-734
The mechanism of bacterial synthesis of polymers and copolymers of hydroxyalkanoic acids is described. The structural and physicochemical properties of polymers obtained by biosynthesis are identical to those of the polymers obtained by polymerisatio
Autor:
B. E. Geller
Publikováno v:
International Journal of Polymeric Materials. 19:181-192
The essence of chemical modification processes of fiber-forming polymers based on recombination addition reactions involves preliminary sorption of low-molecular components by the fiber being in a high elasticity state with the subsequent transfer of