Preparation and the swelling properties of sodium alginate graft poly (acrylic acid-co-2-acrylamide-2-methyl propane sulfonic acid)/graphene oxide hydrogel composite

2018 ◽  
Vol 37 (8) ◽  
pp. 2885-2893 ◽  
Author(s):  
Linhui Zhu ◽  
Yangwenyi Liu ◽  
Fangyuan Wang ◽  
Tengteng He ◽  
Yaoji Tang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Acrylic Acid ◽  
Sodium Alginate ◽  
Sulfonic Acid ◽  
Swelling Properties ◽  
Hydrogel Composite ◽  
Poly Acrylic Acid

Adsorption of Dyes onto Sodium Alginate Graft Poly(Acrylic Acid-co-2-Acrylamide-2-Methyl Propane Sulfonic Acid)/ Kaolin Hydrogel Composite

2017 ◽  
Vol 25 (8) ◽  
pp. 627-634 ◽  
Author(s):  
Linhui Zhu ◽  
Chengdong Guan ◽  
Bin Zhou ◽  
Zhentao Zhang ◽  
Rui Yang ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Sodium Alginate ◽  
Xylenol Orange ◽  
Methyl Violet ◽  
Cationic Dyes ◽  
Anionic Dyes ◽  
Hydrogel Composite ◽  
Adsorption Capacities ◽  
Initial Ph ◽  
Poly Acrylic Acid

Adsorption of four dyes, namely methyl violet (MV), rhodamine 6G (R6G), acid chrome blue K (AK) and xylenol orange (XO) onto sodium alginate graft poly(acrylic acid-co-2-acrylamide-2-methyl-1-propanesulfonicacid)/kaolin (SA-g-P(AA-co-AMPS)/KL) hydrogel composite is studied. The factors influencing the adsorption capacities, including the initial concentrations of dye solutions, contact time, initial pH values and dosage of the adsorbent as well as ionic strength of the solution are discussed. It is more effective for the composite to adsorb cationic dyes such as MV and R6G rather than anionic dyes AK and XO. The maximum adsorption capacities of MV, R6G, AK and XO are 1361.1, 1627.8, 563.5 and 312.4 mg/g, respectively. The adsorption thermodynamics for the four dyes are in accordance with both the Freudlich and Redlich-Peterson equations. It is shown that adsorption of the cationic dyes R6G and MV is spontaneous, while that of anionic dyes AK and XO is not. The kinetics studies show that the adsorption of the four dyes fitted a pseudo-second-order equation.

Mechanical, thermal and swelling properties of poly(acrylic acid)–graphene oxide composite hydrogels

Soft Matter ◽  
2012 ◽  
Vol 8 (6) ◽  
pp. 1831-1836 ◽  
Author(s):  
Jianfeng Shen ◽  
Bo Yan ◽  
Tie Li ◽  
Yu Long ◽  
Na Li ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Acrylic Acid ◽  
Swelling Properties ◽  
Oxide Composite ◽  
Composite Hydrogels ◽  
Poly Acrylic Acid

Preparation and absorption studies of poly(acrylic acid-co-2-acrylamide-2-methyl-1-propane sulfonic acid)/graphene oxide superabsorbent composite

2018 ◽  
Vol 76 (3) ◽  
pp. 1383-1399 ◽  
Author(s):  
Yaoji Tang ◽  
Chengdong Guan ◽  
Yangwenyi Liu ◽  
Zhentao Zhang ◽  
Baoming Li ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Acrylic Acid ◽  
Sulfonic Acid ◽  
Superabsorbent Composite ◽  
Absorption Studies ◽  
Poly Acrylic Acid
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