Swelling properties of cassava starch grafted with poly (potassium acrylate-co-acrylamide) superabsorbent hydrogel prepared by ionizing radiation

2015 ◽  
Author(s):  
Dhena Ria Barleany ◽  
Fida Ulfiyani ◽  
Shafina Istiqomah ◽  
Heri Heriyanto ◽  
Rahmayetty ◽  
...  
Keyword(s):  
Ionizing Radiation ◽  
Cassava Starch ◽  
Swelling Properties ◽  
Superabsorbent Hydrogel

scholarly journals Influence of Ionizing Radiation on Biodegradable Foam Trays for Food Packaging Obtained from Irradiated Cassava Starch

2018 ◽  
Vol 61 (0) ◽  
Author(s):  
Antônio Jedson Caldeira Brant ◽  
Natália Naime ◽  
Ademar Benévolo Lugão ◽  
Patrícia Ponce
Keyword(s):  
Ionizing Radiation ◽  
Food Packaging ◽  
Cassava Starch

Synthesis and Swelling Properties of Hydrolyzed Cottonseed Protein Composite Superabsorbent Hydrogel

2010 ◽  
Vol 59 (12) ◽  
pp. 1018-1032 ◽  
Author(s):  
Buning Zhang ◽  
Yingde Cui ◽  
Guoqiang Yin ◽  
Xinming Li ◽  
Yawen You
Keyword(s):  
Swelling Properties ◽  
Cottonseed Protein ◽  
Superabsorbent Hydrogel

Swelling properties of CMC-g-poly (AAm-co-AMPS) superabsorbent hydrogel

2009 ◽  
Vol 113 (6) ◽  
pp. 3442-3449 ◽  
Author(s):  
Ali Pourjavadi ◽  
Hossein Ghasemzadeh ◽  
Fatemeh Mojahedi
Keyword(s):  
Swelling Properties ◽  
Superabsorbent Hydrogel

scholarly journals Development of Novel Superabsorbent Hybrid Hydrogels by E-Beam Crosslinking

Gels ◽  
2021 ◽  
Vol 7 (4) ◽  
pp. 189
Author(s):  
Ion Călina ◽  
Maria Demeter ◽  
Anca Scărișoreanu ◽  
Marin Micutz
Keyword(s):  
Sol Gel ◽  
Absorbed Dose ◽  
Crosslinking Density ◽  
Mechanical Analysis ◽  
Hybrid Hydrogel ◽  
Beam Radiation ◽  
Swelling Properties ◽  
Superabsorbent Hydrogel ◽  
Swelling Degree ◽  
Hybrid Hydrogels

In this study, several superabsorbent hybrid hydrogel compositions prepared from xanthan gum (XG)/sodium carboxymethylcellulose (CMC)/graphene oxide (GO) were synthesized by e-beam radiation crosslinking. We studied and evaluated the effects of GO content from the chemical structure of the hydrogels according to: sol-gel analysis, swelling degree, diffusion of water, ATR-FTIR spectroscopy, network structure, and dynamic mechanical analysis. The gel fraction and swelling properties of the prepared hydrogels depended on the polymer compositions and the absorbed dose. The hybrid XGCMCGO hydrogels showed superabsorbent capacity and reached equilibrium in less than 6 h. In particular, the XGCMCGO (70:30) hydrogel reached the highest swelling degree of about 6000%, at an irradiation dose of 15 kGy. The magnitude of the elastic (G′) and viscous (G″) moduli were strongly dependent on the absorbed dose. When the degree of crosslinking was higher, the G′ parameter was found to exceed 1000 Pa. In the case of the XGCMCGO (80:20) hydrogel compositions, the Mc and ξ parameters decreased with the absorbed dose, while crosslinking density increased, which demonstrated that we obtained a superabsorbent hydrogel with a permanent structure.

Preparation, Swelling and Water-Retention Properties of Crosslinked Superabsorbent Hydrogels Based on Guar Gum

2010 ◽  
Vol 96 ◽  
pp. 177-182 ◽  
Author(s):  
Wen Bo Wang ◽  
Ai Qin Wang
Keyword(s):  
Acrylic Acid ◽  
Water Retention ◽  
Guar Gum ◽  
Weight Ratio ◽  
Ammonium Persulfate ◽  
Sodium Acrylate ◽  
Swelling Properties ◽  
Superabsorbent Hydrogel ◽  
Water Retention Properties ◽  
Superabsorbent Hydrogels

Utilization of natural polymer as matrix for preparing hydrogels can improve the performance of the materials and render them environmentally friendly. In this work, the guar gum-g-poly(sodium acrylate) (GG-g-PNaA) superabsorbent hydrogels were prepared by the solution graft copolymerization of natural guar gum (GG) with partially neutralized acrylic acid (NaA) using ammonium persulfate (APS) as initiator and N,N′-methylenebisacrylamide (MBA) as crosslinker. FTIR spectra confirmed that NaA had been grafted on GG chains. The effects of reaction variables including the concentration of APS and MBA, the weight ratio of acrylic acid (AA) to GG and the neutralization degree of AA on water absorption were investigated. The superabsorbent hydrogel prepared under optimal condition gives the best absorption of 1107 g∙g–1 in distilled water and 88 g∙g–1 in 0.9 wt% NaCl solution. Effects of external pH on the swelling properties of hydrogels were investigated, and the practical water retention properties of the hydrogels were also evaluated. Results indicated that the hydrogels exhibited excellent pH-stability in a wide pH range from 4 to 11, and the water-retention capabilities of sand soils were also greatly improved after utilizing the superabsorbent hydrogels. This superabsorbent hydrogels could be used as potential eco-friendly water-saving materials for agricultural or ecological application.

Preparation of Cottonseed Protein-Based Superabsorbent Hydrogel Composite

2011 ◽  
Vol 328-330 ◽  
pp. 1589-1593 ◽  
Author(s):  
Bu Ning Zhang ◽  
Ying De Cui ◽  
Guo Qiang Yin ◽  
Hong Bin Zhou
Keyword(s):  
Sodium Sulfite ◽  
Radical Copolymerization ◽  
Hydroxyethyl Methacrylate ◽  
Potassium Persulphate ◽  
Free Radical Copolymerization ◽  
Swelling Properties ◽  
Cottonseed Protein ◽  
Superabsorbent Hydrogel ◽  
Hydrogel Composite ◽  
Swelling Capacity

A novel superabsorbent hydrogel was obtained by graft coplolymerization of cottonseed protein (CP), acrylic acid (AA) and 2-hydroxyethyl methacrylate (HEMA). This composite was synthesized by free radical copolymerization in aqueous solution in the presence of redox initiators, potassium persulphate and sodium sulfite, and N, N-Methylene bisacrylamide (NMBA) as cross-linking agent. The effects of the certain variables of the copolymerization on the swelling capacity of the hydrogel were measured and its swelling properties in different solutions were investigated. This approach shows a promising method in utilizing cottonseed protein to synthesis superabsorbent polymer with excellent water absorbency and potential in various applications.

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