LetX be a closed oriented hyperbolic surface and γ a simple closed geodesic, which is short on X. We show that the iterated grafting grtγgrsγX is close to the grafting ray gr(s+T )γX in the Teichmüller metric, where the bounds depend on the length of γ only. Using this result, we show that the holonomy lifts gr2πγgrtγX of a grafting ray all lie in a r-tube around the ray grtγX and the rays grtγ...

........................................................... 1 Objective........................................................... 2 Background ...................................................... 2 Materials and Methods.................................... 5 Chemicals .......................................................................................................................5 Surfa...

This study used Raman spectro-microscopy to investigate the synthesis and degradation of radiationgrafted anion-exchange membranes (RG-AEM) made using 50 mm thick poly(ethylene-cotetrafluoroethylene) (ETFE) films, vinylbenzyl chloride (VBC) monomer, and 1-methylpyrrolidine (MPY) amination agent. The data obtained confirmed the operation of the grafting-front mechanism. VBC grafting times of 1 a...

Silicon wafers and glass surfaces were functionalized with facially amphiphilic antimicrobial copolymers using the "grafting from" technique. Surface-initiated atom transfer radical polymerization (ATRP) was used to grow poly(butylmethacrylate)-co-poly(Boc-aminoethyl methacrylate) from the surfaces. Upon Boc-deprotection, these surfaces became highly antimicrobial and killed S. aureus and E. co...

Purpose The physicochemical properties of a xenograft are very important because they strongly influence the bone regeneration capabilities of the graft material. Even though porcine xenografts have many advantages, only a few porcine xenografts are commercially available, and most of their physicochemical characteristics have yet to be reported. Thus, in this work we aimed to investigate the p...

OBJECTIVE Aseptic loosening of artificial knee joints induced by wear particles from a tibial polyethylene (PE) insert is a serious problem limiting their longevity. This study investigated the effects of grafting with our original biocompatible phospholipid polymer 2-methacryloyloxyethyl phosphorylcholine (MPC) on the insert surface. METHODS The hydrophilicity of the PE surface was determine...

Control and tuning of surface properties is indispensable for the programmed and rational design of materials. Particularly, polymeric brush-modified colloids can be used as carrier materials for enzyme immobilization. Although it is of prime importance to control the brush architecture, there is still a lack of systematic investigations concerning the impact of grafting density on the properti...