Preparation and performance of carboxymethyl cellulose-based gel fabric with high salt water absorption capacity
To solve the problem of long preparation time and limited saline absorption capacity of existing water absorption materials the liquid metal/choline chloride(LM/PDES)system was in-troduced in the polymerization process of carboxymethyl cellulose(CMC),acrylic acid(AA)and 2-acrylamide-2-methylpropanesulfonic acid(AMPS).CMC-P(AA-AMPS)/LM/PDES gel was deposited and polymerized on the surface of high temperature alkali treated polyester fabric by grafting and crosslinking copolymerization and freeze-drying.FTIR and SEM indicate chemical cross-linking between CMC,PAA and PAMPS,coordination between the Ga3+ion in the LM/PDES system and the carboxyl group(—COOH),and the gel structure showed typical macro-porous properties.The hydrophilic and electrostatic interaction of the CMC-P(AA-AMPS)/LM/PDES gel structure and the anionic groups(—COOH,—HSO3),provide the driving force and space for the absorption of liquid in the gel fabric.The absorption capacity of CMC-P(AA-AMPS)/LM/PDES gel fabric for deionized water,normal saline(0.9％)and synthetic urine can reach 460,60 and 55 respectively;in addition,the gel fabric shows excellent air permeability to ensure wearing comfort for the human body.This paper provides a theoretical reference for im-proving the absorption capacity of water bent materials to aqueous solutions.
国家科技期刊平台
NSTL
万方数据
