The present invention relates to a process for production of water-absorbing textile composite materials comprising the use of a polymeric composite solution and a textile material (non-woven, woven and other). The textile material is impregnated with the composite polymeric solution, which after thermal treatment is cross-linked in situ. More particularly, the present invention relates to an absorbent textile composite article comprising textile fibers and a polymers network interpenetrating the textile fibers, the polymers network comprising natural polymer crosslinked to synthetic polymer in the absence of non-polymeric crosslinking agent. The textile composite article exhibits excellent absorbency of aqueous media such as food liquids, cosmetic liquids, pharmaceutical liquids or human body secretions.

A production method for an acidic gas adsorbent sheet of the present invention includes: a step (I) of, in a mixed solution including a compound C1 having a primary amino group, a compound C2 having an epoxy group, and a porogen and having an equivalent of the primary amino group greater than an equivalent of the epoxy group, reacting the compound C1 and the compound C2 to obtain a reaction product; a step (II) of cooling the mixed solution including the reaction product, then adding the compound C2 to the mixed solution, and reacting the reaction product and the compound C2 to obtain a reaction solution; a step (III) of curing the reaction solution to obtain a sheet-shaped cured body; and a step (IV) of removing the porogen from the sheet-shaped cured body.