The purpose of this study was to assess the antimicrobial efficacy of a peracetic acid-based disinfectant for decontamination of heat-polymerized, chemically activated and microwave-polymerized acrylic resins. Resin plates were contaminated in vivo upon intraoral use by 10 volunteers for 7 nights and slabs were contaminated in vitro by contact with Bacillus subtilis and Bacillus stearothermophi...

In the present work, hydrogels based on acrylamide (AAm) and acrylic acid (AAc), crosslinked with N,N’-methylenebisacrylamide (MBAAm) were prepared by free radical polymerization in solution. The effect of initial AAm/AAc mole ratio and nominal crosslinking ratio (moles of crosslinking agent/moles of polymer repeat unit) on the dynamic and equilibrium swelling behaviour of hydrogels was investi...

Superporous hydrogels (SPHs), based on poly(2-hydroxyethyl methacrylate) (PHEMA), were prepared by adding minute amounts of an ioncomplexable hydrophilic acrylic acid. PHEMA SPHs are generally strong, but their swelling is minimal. To improve the swelling, different poly(HEMA-coacrylic acid) hydrogels were polymerized and crosslinked, then physically treated with divalent calcium and trivalent ...

Hydraulic permeability and molecular weight cutoff (MWCO) performance tuning of polysulfone (PSf) ultrafiltration (UF) membrane was attained via surface modification with a tethered layer poly(acrylic acid) (PAA). Surface nano-structured (SNS) PAA synthesized onto base PSf UF membranes by atmospheric pressure plasma (APP) activation followed graft polymerization (GP) acrylic acid (AA). Through ...

Hydrogels, due to their unique potentials such as high-water content and hydrophilicity are interest for the controlled release of drug molecules. The present study aims to create a controlled-release system through the preparation and characterization of hydrogels based on pH-sensitive polymers such as poly (acrylic acid). Poly (acrylic acid), p(AA), hydrogel has been synthesized by radical po...

A solvent-to-polymer upgrading strategy was developed to convert green solvents of the lactic acid portfolio into LCST-type acrylic polymers and hydrogels.

Abstract The homophase polymerization of acrylic acid is carried out in a solution poly(butyl acrylate) trithiocarbonate (PBATC) mixed solvent 2-propanol–water. phase diagram the three-component PBATC-2-propanol–water system at 22°C obtained. region compositions semidilute solutions determined. AA 70°C, which with respect to PBATC similar thermodynamic quality θ-solvent 22°, yields narrowly dis...

This review gives an explicit overview of developments in the vapor-phase dehydration lactic acid to acrylic with rational design heterogeneous catalyst systems. Constructive critiques are presented.

Abstract: Introduction: The controlled release of medicaments in the management diabetes is desirable to have a better therapeutic activity drug. Objectives: In present study hydrogels were prepared as drug delivery system taking Rosiglitazone model Materials and Methods: Hydrogels created using Free Radical Polymerization approach, with crosslinker N, N′-Methylene bisacrylamide serving binding...