Polypropylene (PP) has poor adhesion to metals and other surfaces for its chemical structure. Hence, chemical modification of PP is necessary for metal surface coating application. In this research, grafting of maleic anhydride (MA) onto co(propylene-b-ethylene) in the presence of a dicumyl peroxide (DCP) was accomplished in a single screw extruder. Characteristics of the modified polymer were ...

Chemical grafting of Polyaniline (PAni) and chitosan (CS) as has been carried out with formaldehyde as grafting agent and ammonium persulfate as an initiator. For this reason aniline monomers were copolymerized with chitosan and were chemically polymerized. The synthesized copolymer was Characterized using Fourier transform infrared spectroscopy (FTIR), UV-Visible, scanning electron microscopy ...

In order to facilitate the integration of offshore surface antenna and reduce manufacturing cost, resonance shortening length omnidirectional radiation performance a centrally loaded whip are analyzed. By calculating impedance characteristics each part midload antenna, shortened in state is obtained; superimposed field strength far calculated its analyzed; simulation carried out by using FEKO e...

Penyambungan (grafting) merupakan salah satu upaya untuk memperbaiki sifat tanaman menggunakan bahan klonal baik pada fase pembibitan, pemeliharaan maupun rehabilitasi. Keragaan kopi Robusta dapat diperbaiki melalui penyambungan intraspesifik (Robusta/Robusta) menghasilkan produktivitas yang lebih tinggi atau interspesifik (Arabika/Robusta) Arabika. Tujuan penelitian ini adalah (1) mengetahui p...

Gamma radiation-induced graft copolymerization of styrene onto poly(ethylene terephthalate) (PET) films was studied using simultaneous irradiation technique. The effects of grafting conditions on the degree of grafting were investigated. The grafting conditions include monomer concentration, irradiation dose, dose rate, and the type of solvent. Moreover, the effect of the addition of crosslinki...

background: dialysis patients frequently have coronary artery disease but are regarded as high risk patients for coronary artery bypass grafting (cabg). methods: between february 2002 and september 2006, seventeen dialysis-dependent patients underwent isolated cabg at our center. cabg was performed under cardiopulmonary bypass (cpb) for all the patients. all cases had been maintained on hemodia...

We show that an instanton with high charge can provoke the creation of extra curvature on space holds it. Geometrically, this corresponds to a new surgery operation, which we name grafting. Curvature around sphere increases by grafting when decays.

BACKGROUND The published return-to-play (RTP) rates for Major League Baseball (MLB) pitchers who have undergone surgical repair of superior labrum anterior-posterior (SLAP) tears vary widely and are generally accepted to be lower in the subset of competitive throwers. The efficacy of surgical treatment for MLB players is largely unknown. PURPOSE To examine the RTP rate and performance of MLB ...

This study investigated the chemical grafting of a single-layer poly(vinyl alcohol) (PVOH) film. The effect of the grafting parameters (grafting time, grafting temperature, and concentration of fatty acid chloride) on the hydrophobicity of the film surface and the film solubility were evaluated. The PVOH substrate film (cold-water soluble at 20°C) was manufactured by flat extrusion and had a th...