Utilization of hollow kapok fiber for the fabrication of a pH-sensitive superabsorbent composite with improved gel strength and swelling properties

RSC Advances ◽  
2014 ◽  
Vol 4 (92) ◽  
pp. 50478-50485 ◽  
Author(s):  
Xiaoning Shi ◽  
Wenbo Wang ◽  
Yian Zheng ◽  
Aiqin Wang
Keyword(s):  
Gel Strength ◽  
Ph Sensitive ◽  
Swelling Properties ◽  
Kapok Fiber ◽  
Superabsorbent Composite

Preparation and Swelling Properties of P(AMPS-co-AM)/ Attapulgite Clay Superabsorbent Composite by Microwave Irradiation

2012 ◽  
Vol 512-515 ◽  
pp. 2394-2398 ◽  
Author(s):  
Ji Hong Xu ◽  
De Xin Tan ◽  
Ling Yan Yan ◽  
Zhong Li
Keyword(s):  
Microwave Irradiation ◽  
Microwave Power ◽  
Water Retention ◽  
Salt Water ◽  
Absorption Capacity ◽  
Water Absorbency ◽  
Swelling Properties ◽  
Superabsorbent Composite ◽  
Speed Up ◽  
Attapulgite Clay

A novel poly(2-acrylamido-2-methylpropa-nesulfonicacid-co-acrylamide) / attapulgite (P(AMPS-co-AM)/APT) high-salt superabsorbent composite was synthesized through graft polymerization in aqueous solution by microwave irradiation. The structure of the composite was characterized by infrared spectra (FTIR).The influence of the content of monomer, microwave power and the ratio of attapulgite clay on water absorbency was investigated. The swelling behaviors and the water retention of Superabsorbent resin with different APT content were also examined. The results show that the graft copolymerization took place between APT and organic monomers. Adding an appropriate amount of APT in resin can effectively improve the absorption capacity and salt-water performance. Microwave power is 390W, APT amount is 7.5% (mass fraction),The water absorbency of resin in distilled water and 0.9wt% NaCl were 1460g / g and 114 g / g. The resin has a faster absorption rate and strong water retention, the appropriate increase the amount of APT can significantly speed up the rate of the resin absorbent and improve its water retention.

Effects of acrylic acid on preparation and swelling properties of pH-sensitive dextran hydrogels

Biomaterials ◽  
2002 ◽  
Vol 23 (4) ◽  
pp. 1103-1112 ◽  
Author(s):  
Hsin-Cheng Chiu ◽  
Yi-Fong Lin ◽  
Yuan-Hung Hsu
Keyword(s):  
Acrylic Acid ◽  
Ph Sensitive ◽  
Swelling Properties

Eco-friendly superabsorbent composite based on sodium alginate and organo-loess with high swelling properties

RSC Advances ◽  
2015 ◽  
Vol 5 (66) ◽  
pp. 53819-53828 ◽  
Author(s):  
Guofu Ma ◽  
Feitian Ran ◽  
Qian Yang ◽  
Enke Feng ◽  
Ziqiang Lei
Keyword(s):  
Acrylic Acid ◽  
Sodium Alginate ◽  
Swelling Properties ◽  
Superabsorbent Composite

A novel superabsorbent composite with high swelling properties was synthesized by the grafted co-polymerization of partially neutralized acrylic acid (AA) onto a sodium alginate (NaAlg) backbone in the presence of organo-loess.

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