ビスコース工業とレオロジー
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概要
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The rheological behavior in viscose industry (especially, in rayon industry) is discussed to obtain the fundamental knowledges related to the manufactural processes. (1) Viscose(Spinning Solution) The properties of viscose rayon are influenced essentially by the network structures which are constructed in the initial spinning step and relate t the internal structure in viscose solution. It is appropriate by measuring structural viscosity, dynamic viscoelasticity, spinnability and tensile viscosity of viscose in order to detect the internal structure of viscose, which widely changes with conditions and components of viscose. It was found that there exists the considerable relation between these measuring data and maximum draft of spinning and properties of rayon, then we can explain the internal structure of viscose by a distinct conceptions. (2) Coagulation and Regeneration of Viscose( Gelation and Orientation with Spinning) At the spinning of viscose,it takes place the coagulation , orientation and regeneration of cellulose xanthate by physical and chemical reaction in contacted with spinning bath, then these transition processes are first step to fix the fiber structure and important step effecting to fiber properties. In these view point, it is possible to obtain the some suggestions for stretch spinning technics by measuring of stretching form, stress relaxation, birefringence change in connection with these spinning processes. (3) Internal Structure Changes of Regenerated Cellulose Fibers Fiber structure is completely fixed through washing, refining and drying of regenerated fresh cellulose gels. Then, it is considered that crystallization (corning) and shrinkage of cellulose molecules take place on the several types correspond to the deswelling conditions, and reflect sharply upon the dyeability, feeling etc. From the experiments of stress relaxation, it could be estimated these slight effects of deswelling process upon the many properties of rayon fibers. And, by the measurements of both stress relaxation and stress recovery, it was found that regenerated cellulose fiber has a interesting properties, particularly in stress recovery, which shows the stress increase after returning the strain.
- 社団法人日本材料学会の論文
- 1960-04-15