Abstract Starch-g-poly(acrylic acid)/ Pterocladia capillacea –derived activated carbon (St-g-P(AA)/P-AC) composites were prepared via aqueous solution graft copolymerization using starch, acrylic acid, and of red alga (0–10%) with N , N′ -methylenebisacrylamide crosslinker ammonium persulfate (NH 4 ) 2 S O 8 initiator. Fourier-transform infrared (FTIR) spectroscopy, Brunauer–Emmett–Teller (BET)...

Microfluidic techniques allow for the tailored construction of specific microparticles, which are becoming increasingly interesting and relevant. Here, using a microfluidic hole-plate-device thermal-initiated free radical polymerization, submicrometer polymer particles with highly textured surface were synthesized. Two types monomers applied: (1) methylmethacrylate (MMA) combined crosslinkers (...

In this study, a hydrogel composed of acrylamide (AAm) with N-vinylimidazole (NVI) as co-monomer, with a cross-linker such as N, N` Methylenebisacrylamide and potassium peroxodisulfate as an initiator solution was prepared. Poly (AAm/NVI) hydrogels were synthesized by free radical solution polymerization. Swelling experiments were performed in water at 25°C, gravimetrically. Here, it was of...

Poly (vinylpyridine-N-N-methylenebisacrylamide-acrylicacid) (2-VP-MBAm-AA) was prepared from the reaction of TiO2-methacryloxypropyltrimethoxysilane (TiO2-MAPTMS) with 2-vinylpyridine, methylenbisacrylamide (MBAm) and tert-butyl acrylate (t-BuA). Subsequently (2-VP-MBAm-AA) was reacted with CuI to give the Cu(I) NPs supported onto the above polym...

A kind of chemically cross-linked pH-sensitive hydrogels based on methoxyl poly(ethylene glycol)-poly(caprolactone)-acryloyl chloride (MPEG-PCL-AC, PECA), poly(ethylene glycol) methyl ether methacrylate (MPEGMA, MEG), N,N-methylenebisacrylamide (BIS), and itaconic acid (IA) were prepared without using any organic solvent by heat-initiated free radical method. The obtained macromonomers and hydr...

In order to utilize the psyllium husk, a medicinally important natural polysaccharide, for developing the novel hydrogels meant for the controlled drug delivery devices, we have prepared psyllium and polyacrylamide based polymeric networks by using N,N 0-methylenebisacrylamide (N,N-MBAAm) as crosslinker. The polymeric networks thus formed were characterized with scanning electron micrography (S...

A new and facile fabricating method for lysozyme molecularly imprinted polymer beads (lysozyme-MIP beads) in aqueous media was presented. Mesoporous chloromethylated polystyrene beads (MCP beads) containing dithiocarbamate iniferter (initiator transfer agent terminator) were used as supports for the grafting of lysozyme imprinted copolymers with acrylamide and N,N'-methylenebisacrylamide throug...

The 2 techniques are based upon the formulation of lead ing ion and trailing ion initially enunciated by Ornstein (3) and lean heavily on the suggestions for buffer strategy made by Williams and Reisfeld (6). The leading ion is po tassium, the trailing ion is fl-alanine in the pH 3.8 system or 3-picoline, (3-methylpyridine) (pK 6.29) in the pH 6.0 system. Acetic acid and cacodylic acid (pK 6.4)...

Controlled and sustained drug delivery has become the standard in modern pharmaceutical design and an intensive research work is going on in obtaining better drug product effectiveness, reliability and safety. In this regard, many polymers are very useful with majority of hydrogels, which undergo reversible volume and/or sol-gel phase transitions in response to physiological or other external s...

In this article, the biocatalytic oxidation of ethanol into acetaldehyde was studied using a catalase entrapped within monolithic polyampholyte cryogel, p(APTAC-co-AMPS), as catalyst. When an anionic monomer, 2-acrylamido-2-methyl-1-propanesulfonic acid sodium salt (AMPS), mixed with cationic (3-acrylamidopropyl) trimethylammonium chloride (APTAC), under cryo-polymerization conditions at molar ...