Hydrogelling fibers and fibrous structures

摘要

Fibers or one-dimensional, two-dimensional, or three-dimensional fibrous structures configured to be hydrogelling, produced from fibers made of a first fiber raw material, whereby the first fiber raw material contains water-soluble polyvinyl alcohol and/or polyvinyl alcohol copolymer, whereby the hydrogelling configuration of the fibers or fibrous structures is achieved by tempering the fiber raw material at a predetermined tempering temperature that is preferably higher than the glass transition temperature and/or lower than the melting or decomposition temperature of the first fiber raw material employed, as well as by tempering for a predetermined tempering duration, and whereby the fiber raw material is cross-linked by the tempering.

主权项

1. A plurality of fibers, configured to be hydrogelling, produced from fibers made of a first fiber raw material comprising water-soluble polyvinyl alcohol, polyvinyl alcohol copolymer, or water-soluble polyvinyl alcohol and polyvinyl alcohol copolymer,
wherein a hydrogelling configuration of the plurality is achieved by (i) tempering a fiber raw material at a predetermined tempering temperature that is higher than a glass transition temperature,
lower than a melting or decomposition temperature, orhigher than the glass transition temperature and lower than the melting or decomposition temperature of the first fiber raw material, and (ii) tempering for a predetermined tempering duration, wherein the fiber raw material is cross-linked by the tempering, and wherein the plurality has an absorption capacity of 4 to 30 g/g for water, aqueous solutions, or water and aqueous solutions.