TY - JOUR
AU1 - Zharov, V.
AU2 - Aleksandriiskii, S.
AB - centrated solutions AE n remains unchanged for each solvent with an increase in the MA content of the copolymer above 8%: For a DMFA solution AE n =23 kJ/mole and for a 51.5% NaCNS solu- tion 34.5 kJ/mole (Fig. i). The structure of concentrated solutions of the copolymers of AN undergoes an appreciable change with the introduction of up to 8% MA units into the PAN chain. This is confirmed by the significant change in n with an increase in the MA content of the copolymer to 8%, the appreciable change in ~cr (from 630 to 200 N/m2), and the lower AE n values. An increase in the MA content of the copolymer to 8% thus results in the formation of a more labile struc- tural network in equiconcentrated solutions. In moderately concentrated solutions the intensity of the molecular interaction mani- fests itself to a lesser extent in the copolymer than in the homopolyacrylonitrile. The result is that the viscosity is lower whatever the shear stress and that the AE n values are also lower. The experimental results obtained in this investigation support the standpoint [i] that the difference in the mechanical characteristics of concentrated solutions and solids is 
TI - Cooling the polyester fibre in the spinning process
JF - Fibre Chemistry
DO - 10.1007/BF00548789
DA - 2004-10-14
UR - https://www.deepdyve.com/lp/springer-journals/cooling-the-polyester-fibre-in-the-spinning-process-iMMDJ2l4zX
SP - 92
EP - 95
VL - 12
IS - 2
DP - DeepDyve
ER -