Journal ArticleDOI
Semi-IPNs of starch and poly(acrylamide-co-sodium methacrylate): Preparation, swelling and diffusion characteristics evaluation
TLDR
Semi-interpenetrating polymer network (IPN) hydrogels composed of starch and random copolymer of poly(acrylamide-co-sodium methacrylate) [poly(AAm co-NMA)] were prepared by polymerizing an aqueous solution of acrylamides (AAm), sodium methacelate (NMA) using ammonium persulphate (APS)/N,N, N1,N1-tetramethylethylenediamine (TMEDA) as redox initiatingAbstract:
Semi-interpenetrating polymer network (IPN) hydrogels composed of starch and random copolymer of poly(acrylamide-co-sodium methacrylate) [poly(AAm-co-NMA)] were prepared by polymerizing an aqueous solution of acrylamide (AAm), sodium methacrylate (NMA) using ammonium persulphate (APS)/N,N,N1,N1-tetramethylethylenediamine (TMEDA) as redox initiating system in presence of a crosslinker and starch solution. IR spectroscopy was used to identify the presence of different repeating units in the IPN networks. The swelling and diffusion characteristics, such as initial swelling rate (ri), swelling rate constant (ks), equilibrium swelling ratio (Seq), diffusion constant (n) and diffusion coefficients (D) were evaluated for different semi-IPN hydrogels prepared under various formulations. For better understanding of network structure formation of these semi-IPNs, three different crosslinkers namely, N,N-methylenebisacrylamide (MBA), 1,4-butanediol diacrylate (BDDA) and diallyl phthalate (DP) were employed. Further, the swelling pattern of semi-IPN hydrogels was studied in different physiological, pH and ionic/salt solutions and showed great responsiveness due to their ionic character. The morphological features of these IPNs were observed using scanning electron microscopy (SEM).read more
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Design and applications of interpenetrating polymer network hydrogels. A review
TL;DR: In this paper, the authors give an overview of the recent design concepts of IPN hydrogels and their applications in controlled drug delivery, and separation processes, and a special concern is given to the macroporous IPN composite cryogels, which are very attractive materials for separation processes being endowed with a high reusability.
Journal ArticleDOI
Controlled silver nanoparticles synthesis in semi-hydrogel networks of poly(acrylamide) and carbohydrates: A rational methodology for antibacterial application
TL;DR: In this paper, a semi interpenetrating hydrogel networks (SIHNs) based on cross-linked poly (acrylamide) prepared through an optimized rapid redox-solution polymerization with N, N ′-methylenebisacrylide (MBA) in presence of three different carbohydrate polymers, namely gum acacia (GA), carboxymethylcellulose (CMC), and starch (SR).
Journal ArticleDOI
First successful design of semi-IPN hydrogel–silver nanocomposites: A facile approach for antibacterial application
TL;DR: The developed semi-IPN hydrogel-silver nanocomposite (SHSNC) was evaluated for preliminary antibacterial applications and found to produce silver nanoparticles, ca.
Journal ArticleDOI
Synthesis, characterization, swelling and drug release behavior of semi-interpenetrating network hydrogels of sodium alginate and polyacrylamide
TL;DR: Solution pH, crosslinker concentration and monomer to SA weight ratio of the hydrogels were found to have a strong effect on adsorption and in vitro release profile of the drug from the gel matrix.
Journal ArticleDOI
Starch-Based Hydrogels: Present Status and Applications
TL;DR: An overview of hydrogels based on starch and their various applications can be found in this article, where the authors give an overview of the synthesis process and applications of starch-based hydrogel.
References
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