• Início
  • Resultados da busca
  • Swelling, diffusion, network parameters and adsorption properties of IPN hydrogel of chitosan and acrylic copolymer.

Swelling, diffusion, network parameters and adsorption properties of IPN hydrogel of chitosan and acrylic copolymer.

Materials science & engineering. C, Materials for biological applications (2014-10-05)
Bidyadhar Mandal, Samit Kumar Ray
RESUMO

Interpenetrating network (IPN) type hydrogels of a biopolymer and a synthetic polymer were prepared from chitosan and crosslink copolymer of acrylic acid, sodium acrylate and hydroxyethyl methacrylate. Acrylic acid, sodium acrylate, hydroxyethyl methacrylate and N'N'-methylenebisacrylamide (MBA) monomers were free radically copolymerized and crosslinked in aqueous solution of chitosan. Several IPN hydrogels were prepared by varying concentrations of initiator, crosslinker (MBA) and weight% of chitosan . These hydrogels were characterized by free acid content, pH at point of zero charge (PZC), FTIR, DTA-TGA, SEM and XRD. The swelling and diffusion characteristics, network parameters and adsorption of cationic methyl violet (MV) and anionic congo red (CR) dyes by these hydrogels were studied. The hydrogels showed high adsorption (9.5-119 mg/g for CR and 9.2-98 mg/g for MV) and removal% (98-73% for CR and 94-66% for MV) over the feed concentration of 10-140 mg/l dye in water. The isotherms and kinetics of dye adsorption by the hydrogels were also studied.

MATERIAIS
Número do produto
Marca
Descrição do produto

Sigma-Aldrich
Ammonium persulfate, for molecular biology, suitable for electrophoresis, ≥98%
Sigma-Aldrich
Acrylic acid, anhydrous, contains 200 ppm MEHQ as inhibitor, 99%
Sigma-Aldrich
Potassium bromide, FT-IR grade, ≥99% trace metals basis
Sigma-Aldrich
Ammonium persulfate, ACS reagent, ≥98.0%
Sigma-Aldrich
Sodium metabisulfite, ReagentPlus®, ≥99%
Sigma-Aldrich
2-Hydroxyethyl methacrylate, contains ≤250 ppm monomethyl ether hydroquinone as inhibitor, 97%
Sigma-Aldrich
Ammonium persulfate, reagent grade, 98%
Sigma-Aldrich
Potassium bromide, ACS reagent, ≥99.0%
Sigma-Aldrich
2-Hydroxyethyl methacrylate, ≥99%, contains ≤50 ppm monomethyl ether hydroquinone as inhibitor
Sigma-Aldrich
Sodium metabisulfite, reagent grade, 97%
Sigma-Aldrich
Sodium metabisulfite, puriss. p.a., ACS reagent, reag. Ph. Eur., dry, 98-100.5%
Supelco
Sodium metabisulfite, analytical standard
Sigma-Aldrich
Sodium metabisulfite, puriss., meets analytical specification of Ph. Eur., BP, NF, FCC, E223, dry, 97-100.5%
Sigma-Aldrich
Potassium bromide, anhydrous, free-flowing, Redi-Dri, ACS reagent, ≥99%
Sigma-Aldrich
Ammonium persulfate, BioUltra, for molecular biology, ≥98.0% (RT)
Supelco
Sodium Metabisulfite, Pharmaceutical Secondary Standard; Certified Reference Material
Sigma-Aldrich
Ammonium persulfate, BioXtra, ≥98.0%
Sigma-Aldrich
Potassium bromide, BioXtra, ≥99.0%
Sigma-Aldrich
Potassium bromide, BioUltra, ≥99.5% (AT)
Sigma-Aldrich
Potassium bromide, ReagentPlus®, ≥99.0%
Sigma-Aldrich
Sodium metabisulfite, tested according to Ph. Eur.
Sigma-Aldrich
Potassium bromide, anhydrous, powder, 99.999% trace metals basis
Sigma-Aldrich
Potassium bromide, anhydrous, powder, 99.95% trace metals basis
Sigma-Aldrich
2-Hydroxyethyl methacrylate, embedding medium (for microscopy)
USP
Sodium metabisulfite, United States Pharmacopeia (USP) Reference Standard
Sigma-Aldrich
Potassium bromide, anhydrous, free-flowing, Redi-Dri, ReagentPlus®, ≥99%
Sigma-Aldrich
Ammonium persulfate, free-flowing, Redi-Dri, reagent grade, 98%
Sigma-Aldrich
Sodium metabisulfite, anhydrous, free-flowing, Redi-Dri, ReagentPlus®, ≥99%