Preparation and characterization of poly(acryl amide-coacrylic acid)/nay and Clinoptilolite nanocomposites with improved methylene blue dye removal behavior from aqueous solution

Abstract

Abstract:The nanocomposites of poly(acryl amide-co-acrylic acid) with NaY and Clinoptilolite were prepared using ammonium persulfate as an initiator and N,N′-methylene bis acryl amide as the cross-linker. The morphology was characterized by SEM and the structure of nanocomposite materials was studied with XRD and FT-IR that showed the interaction between porous materials and poly(AAm-coAAc). Thermo gravimetric analyzer (TGA) curve shows that all the chain-extended poly(AAm-co-AAc) are stable up to 250 °C and maximum weight loss occurs at 890 °C. The TGA results indicated higher stability for poly(acryl amide-co-acrylic acid)/NaY and Clinoptilolite composites than poly(AAm-co-AAc). The adsorption and desorption behavior of methylene blue were investigated for nanocomposites. It was shown that poly(AAm-co-AAc)/NaY and Clinoptilolite nanocomposites have higher adsorption than NaY, Clinoptilolite and poly(AAm-co-AAc) alone. This effect was attributed to good interaction between the hydroxyl group in porous materials and carboxylic group in poly(AAm-co-AAc) with methylene blue.

MB Dye Adsorption Behavior on Poly (N cyclohexylacrylamide-co-Acrylamide/Maleicacid)/ OMMT Nanocomposite Hydrogels

“…Where 𝐶 0 and 𝐶 are the initial and equilibrium concentration of the MB dye solution, respectively [23][24].…”

“…It showed that the more the amorphous in the matrix more will be the swelling. It was clear that the regular crystal structure of clay was partly destroyed and the clay platelets were intercalated and dispersed in the nanocomposite hydrogel matrix [23,24,28].…”

Water-Soluble and Biodegradable Pectin-Grafted Polyacrylamide and Pectin-Grafted Polyacrylic Acid: Electrochemical Investigation of Corrosion-Inhibition Behaviour on Mild Steel in 3.5% NaCl Media

“…The first step of degradation occurs in the range of 30-200 ∘ C where a weight loss of 14.6% is observed. This could be due to loss of entrapped water molecules and volatile impurities along with degradation of soft segment of Pec-g-PAAm [15]. The weight loss in this step may be assigned to the loss of ppm Pec-g-PAAm · mpr ppm Pec-g-PAAm · mpr ppm Pec-g-PAAm · mpr ppm Pec-g-PAAm · mpr ppm Pec-g-PAAm · mpr 500 ppm Pec-g-PAAm · mpr Figure 9 grafted links between the pectin and polyacrylamide.…”

Synthesis and study the controlled release of etronidazole from the new PEG/NaY and PEG/MCM-41 nanocomposites

“…Different factors such as stability of the composite and strength of bond between the drug and the composite can affect on the rate of release. The hydrophilic groups such as hydroxyl on the PEG and porous material got hydrolyzed on the buffer solutions and it seems like the hydrogen bond between metronidazole and the composite is weaker than the porous material alone and the rate of hydrolyzed increased [ 7 , 25 , 26 ].…”