Preparation and characterization of polyacrylamide
A novel polyacrylamide (PAM) / sodium alginate (SA) adsorbent with double network structure was prepared by emulsion polymerization of acrylamide (AM) and SA. The chemical structure, thermal stability, crystallinity, pore size and distribution, surface area, surface morphology and energy dispersive spectrum of PAM/SA microspheres were determined by FTIR, TGA, XRD, BET, SEM and EDS.
Polyacrylamide-grafted-sodium alginate copolymers were prepared by persulfate-induced radical polymerization by using polymer-to-monomer ratios of 2 : 1 and 1 : 1.
Characterization of polyacrylamide‐grafted sodium alginate
Characterization of polyacrylamide‐grafted sodium alginate: A novel polymeric flocculant Article in Journal of Applied Polymer Science 81(13):3296 - 3308 · September 2001 with 53 Reads
Synthesis and characterization of polyacrylamide‐grafted sodium alginate copolymeric membranes and their use in pervaporation separation of water and tetrahydrofuran mixtures Mahaveer D. Kurkuri Center of Excellence in Polymer Science, Karnatak University, Dharwad 580 003, India
Polyacrylamide‐g‐alginate‐based electrically responsive
An electrically responsive hydrolyzed polyacrylamide‐grafted‐sodium alginate (H‐PAAm‐g‐SA)‐based membrane‐controlled transdermal drug delivery systems were developed and evaluated. The grafting reaction was confirmed by Fourier transform infrared spectroscopy, elemental analysis, and thermogravimetric analysis.
Inspired by the good adhesion of natural mussels, dopamine was grafted onto oxidized sodium alginate to synthesize a new crosslinker (COA), which was introduced into the collagen/polyacrylamide (PAM-Col) double network to synthesize hydrogel.
Synthesis and characterization of - Wiley Online Library
Synthesis and characterization of poly(N ‐vinyl‐2‐pyrrolidone) grafted sodium alginate hydrogel beads for the controlled release of indomethacin
A pH-sensitive graft co-polymer of polyacrylamide (PAAm) and sodium alginate (SA) was synthesized by free radical polymerization under a nitrogen atmosphere followed by alkaline hydrolysis. The co-polymer was characterized by Fourier transform infrared (FT-IR) spectroscopy, elemental analysis and thermogravimetric analysis (TGA).
Synthesis of Polyacrylamide Grafted Carboxymethylcellulose
The polymers were characterized by IR spectroscopy, thermal analysis, and XRD studies. Flocculation performance of the best performing graft copolymer was compared with three commercial flocculants. It was further compared with another laboratory synthesized graft copolymer, sodium alginate-g-polyacrylamide, in coking and non-coking coal
Ultrasound-assisted synthesis of polyacrylamide-grafted sodium alginate and its application in dye removal Polímeros, 28(2), 139-146, 2025 141/146 141 polymer. The amount of dye adsorbed by mass unit of the copolymer (mg/g) was calculated according to Equation (3): ( ) (0) / C CV q mg g m −× = (3) where C 0 and C are the concentrations of
New Type of Sodium Alginate-g-acrylamide Polyelectrolyte
known concentrations. Based on sodium alginate co ncentration, two types of grafted polymers were obtained. Physical, chemical, and structural investigations were performed. Flocculation studies under different stirring conditions on 0.5, 0.1 and 0.2% kaolin suspension were done. The removal capacity of Cu2+ and Cr6+ ions was also investigated
Novel pH-Sensitive Interpenetrating Network Hydrogel Beads of Carboxymethylcellulose-( Polyacrylamide-Grafted-Alginate) for Controlled Release of Ketoprofen: Preparation and Characterization Buy Article: $68.00 + tax (Refund Policy) (polyacrylamide-grafted-sodium alginate) interpenetrating network (IPN) hydrogel beads loaded with ketoprofen
- What is polyacrylamide (PAM)?
- Polyacrylamide (PAM) is a long chain, linear, water soluble polymeric substance formed from acrylamide (C 3 H 5 NO) subunits, has a high molecular weight of typically from few 1000 to 20 × 10 6 g/mol, and has a very high viscosity in aqueous solutions, depending on the concentration and the degree of polymerization (Sojka et al. 2007).
- Can a batch reactor cultivate polyacrylamide-degrading granules?
- Sequencing batch reactors have been used to cultivate polyacrylamide-degrading granules. Liu et al. (2012) claim that the cultivated aerobic granules, consisting mainly of bacilli and filamentous bacteria, were able to use polyacrylamide both as the sole carbon and nitrogen source.
- Does polyacrylamide decrease oxygen demand during the incubation of granules?
- Furthermore, the chemical oxygen demand decreased during the incubation of the granules in the presence of polyacrylamide. Liquid chromatography–mass spectrometry (LC-MS) analysis showed that the main intermediate of degradation was polyacrylic acid, consisting of seven monomers ( Liu et al., 2012 ).
- How are polyacrylamides deaminated to polyacrylates?
- Polyacrylamides are first deaminated to polyacrylates by microbial amidases. Remaining polyacrylates are more recalcitrant to degradation. Polyacrylamide degradation has mainly been reported for aerobic bacteria. With fungi the degradation is initiated by secreted lignin degrading oxidases.
