Background: Super absorbent resin (SAR) is widely used to absorb ion solution

while its absorbency needs further improvement. Purpose: The aim is to synthesise a new salt resistance SAR by radiation crosslinking

and its performance and the post-processing are researched. Methods: A copolymer gel composed of polyvinyl alcohol

polyacrylate sodium and ethylene diamine tetraacetic acid was prepared by the electron beam radiation crosslinking. The copolymer gels were dipped into the washing liquid comprised of different proportions of methanol and deionized water for swelling and immersion. Then these gels were frozen at ?80 °C. After freeze-drying

crushing and screening

the new superabsorbent SAR was prepared. The factors may have influence on the ionic solutions absorption of the SAR which were investigated and optimized with orthogonal tests. The factors included the weight ratios of Poly vinyl alcohol (PVA) to Poly acrylate sodium (PAAS) to Ethylene diamine tetraacetic acid (EDTA) and the washing liquid. The performance of the SAR at home and abroad was tested. Results: The Suda3 SAR prepared under our optimized synthesis condition has excellent absorption rate and centrifugal liquid retaining capacity. The absorbency of the Suda3 SAR is (821.05±1.61) g?g?1 in deionized water and (72.57±3.01) g?g?1 in 0.9wt% NaCl solution respectively. These parameters are significantly better than that of the SAR of domestic and foreign famous companies (P<0.01). Conclusion: In this study

the new salt resistance SAR was prepared by radiation crosslinking and the post-processing. The SAR has excellent absorbency properties and could be used in the field of medicine and hygiene material. Abstract