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Effect of Ce^4+^ pretreatment on swelling properties of cellulosic superabsorbents by Byoung‐Suhk Kim; Sung‐Phil Mun is a Materials Science article available to read on EtoBox.
What is Effect of Ce^4+^ pretreatment on swelling properties of cellulosic superabsorbents about?
## Abstract Cellulosic superabsorbents are prepared by pretreating the wood pulp (WP) with Ce^4+^ initiator, followed by the graft copolymerization of acrylamide (AM) monomer onto Ce^4+^‐pretreated WP (Ce^4+^ · WP) in acidic medium and in the presence of __N__,__N__′‐methylenebisacrylamide (MBAM) cross‐linker. The rate of AM copolymerization of Ce^4+^ · WP is significantly faster than that of the untreated WP. The obtained polyAM (PAM)‐grafted cellulosic copolymers (PAM‐g‐Ce^4+^ · WP copolymers) are alkaline‐hydrolyzed to produce the water‐absorbents. As PAM grafting yield increases, the absorbency increases rapidly and reaches the maximum value at a yield of 210–240%. The maximum water and saline absorbencies are around 2500 and 50 g g^−1^, respectively. The optimum feed concentration of Ce^4+^ pretreatment on the maximum water and saline absorbencies is 5.0 × 10^−3^ mol L^−1^. The water and saline absorbencies of the PAM‐g‐Ce^4+^ · WP water‐absorbents are remarkably higher in comparison with that of the untreated WP (with a similar grafting yield) due to uniform PAM‐grafting onto Ce^4+^ · WP specimen. In addition, as the amount of cross‐linker increases, the grafting yield is not
Who reads Effect of Ce^4+^ pretreatment on swelling properties of cellulosic superabsorbents?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- Byoung‐Suhk Kim; Sung‐Phil Mun
- Publisher
- John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 1042-7147)
- Published
- 2008
- Language
- EN
- Field
- Materials Science (Physical Sciences)