| 摘要 |
PURPOSE:To obtain an element which can be increases in packing density and strength and has a high response speed by constituting the element of an extremely fine fiber of an extendable and contractable polymer gel. CONSTITUTION:The fiber is obtd. by subjecting the precursor of the extendable and contractable polymer gel (the uncrosslinked polymer, oligomer or monomer of the extendable and contractable polymer gel or the mixture composed thereof, etc.) and a fiber formable polymer of a polyacrylonitrile system, etc., to composite spinning (core-sheath fiber spinning and sea-island fiber spinning executed by a wet process, dry process, etc.). The fiber may be subjected to post treatments such as stretching and heat treatment. The precursor is imparted with reaction (crosslinking reaction and cyclization, etc.) and thereafter, the fiber formable polymer is removed (a dissolving method, decomposing method, etc., which are executed by using liquid, gas, etc., can be adopted and are executed by a batch method or continuous method) in the case of using the monomer oligomer as the precursor of the polymer gel and if the form cannot be maintained with the monomer or oligomer alone. The diameter of the fiber of the polyacrylonitrile system, etc., obtd. in such a manner is reducible to <=10mum. The element which is large in the change quantity specified in the axial direction of the fiber and has an arbitrary form is thereby obtd. |
