| 摘要 |
PURPOSE:To obtain the subject fiber, having a high mechanical strength and usable in an optional form, such as cut fiber, single yarn or fabric, and useful as vibration damping and water holding materials, etc., by subjecting a hydrous fiber prepared by spinning an aqueous spinning solution of a PVA-based polymer to freezing and thawing treatment. CONSTITUTION:The objective fiber obtained by carrying out conjugate spinning of an aqueous spinning solution of a PVA-based polymer (preferably having >=3000 polymerization degree) with a water-coagulable fiber-forming polymer spinning solution (e.g., polyacrylonitrile-, PE-, PP-, polysiloxane or polyester- based polymer) to provide a hydrous fiber and then subjecting the resultant fiber to freezing treatment (preferably at <=-10 deg.C) and thawing treatment (preferably at 0-30 deg.C). |
