The aim of this study was to develop a solvent-free polylactic acid (PLA) open-cell porous scaffold for bone tissue engineering using compression molding and new chemical foaming compound, that we named CFCO. latter is composed blend PLA azodicarbonamide (ADA) as agent, with the addition chitosan-grafted (CS-g-PLA) copolymer at various concentrations. novelty approach during foaming, is, decomp...

Grafted copolymer (sodium alginate (Na. Alg)- acrylic acid (AcA)– methacrylic (MAcA)) was prepared by the gamma irradiation-induced copolymerization in presence of N, N-methylene bisacrylamide (MBA) as a co monomer crosslinker. The functionality, morphology and thermal stability have been examined using FTIR spectroscopy, SEM, TGA-DTA, respectively. surface grafted shows smooth relatively homog...

The copolymer metal complexes in the form of imprinted polymers were prepared from Poly (vinyl alcohol) (PVA), Acrylic acid (AAc), Acrylamide (AAm) and 2-Acrylamido-2methyl propane sulfonic acid (AMPS) monomers irradiated in presence of different metal ions and crosslinking agent. Characteristics and some properties of the prepared imprinted and grafted polymers were investigated. Also the poss...

We present a straightforward method for the preparation of a novel donor–acceptor block copolymer based on an acceptor block with pendant phenyl-C71-butyric methyl ester (PC71BM) and a regioregular poly(3-hexylthiophene) (P3HT) as a donor. First, a hydroxyl-functionalized polystyrene copolymer with an azide end group was synthesized via nitroxide-mediated radical polymerization (NMRP) and was c...

The interaction forces between adsorbed polymer layers were investigated. Two types of graft copolymers that were adsorbed on hydrophobic surfaces have been investigated: (i) a graft copolymer consisting of polymethylmethacrylate/polymethacrylic acid back bone (the B chain) on which several poly(ethylene oxide) chains are grafted (to be referred to as PMMA/PEO(n)); and (ii) a graft copolymer co...

Polystyrene-poly(acrylic acid) (PS-PAA) block copolymers polymerized by atom transfer radical polymerization were covalently grafted to both smooth and microtextured surfaces. These amphiphilic copolymers were utilized to create smart surfaces, which can be responsive to external stimuli, e.g., pH values or organic solvent. Atom force microscopy, field emission scanning electron microscopy, and...