Surface modification graft copolymerization

Surface block-graft-copolymerization, based on the photochemistry of N, AT-diethyldithiocarbamate has been applied to precisely design biocompatible and functional surfaces (patterns of immobilized heparin or proteins), as well as block-grafted surfaces on polystyrene [83]. Polystyrene surfaces have also been patterned by immobilization of poly(Af-isopropylacrylamide) by photolithography, and subsequently used for regiospecific cell attachment [84]. Surface modification of polydimethylsiloxane microfluidic devices by UV induced polymer grafting improved the stability of the electroosmotic mobility and improved electrophoretic resolution of peptides [85]. 

Modification of Polymer Surfaces by Photoinduced Graft Copolymerization... 

Two methods for modification of polymer surfaces by photoinitiated graft copolymerization have been developed a discontinuous method (1) with vapor phase transfer of initiator and monomer and a continuous method (2) with presoaking of a film strip or a fiber bundle in a solution of initiator and monomer. Both methods have been applied to polyelefins and linear polyester. 

Other methods derived from surface modification, including heterogeneous graft copolymerization or in situ radical polymerization and deposition of polyelectrolyte... 

Yuan, Y. Zhang, J. Ai, F. Yuan, J. Zhou, J. Shen, J. Surface modification of SPEU films by ozone induced graft copolymerization to improve hemocompatibility. Colloid. Surf. B. Biointerfaces 2003, 29, 247-256. 

E.T. Kang, K.G. Neoh, and K.L. Tang, Surface modifications of poly(3-alkylthiophene) films by graft copolymerization. Macromolecules, 25, 6842-6848 (1992). 

Native cellulose are commonly modified by physical, chemical, enzymic, or genetic means in order to obtain specific functional properties, and to improve some of the inherent properties that limit their utility in certain application. Physical/surface modification of cellulose are performed in order to clean the fiber surface, chemically modify the surface, stop the moisture absorption process, and increase the surface roughness. " Among the various pretreatment techniques, silylation, mercerization, peroxide, benzoylation, graft copolymerization, and bacterial cellulose treatment are the best methods for surface modification of natural fibers. 

P.Y. Zhang, B. Ranby, Surface modification by continuous graft copolymerization. IV. Photoinitiated graft copoly-... 

Surface modification of a fiber can be accomplished by chemical treatment, graft copolymerization, ion implantation, or plasma treatment. Surface modification usually targets improvements in antistatic properties, moisture regain, dyeing, printing, adhesion, abrasion, antibacterial properties, and so forth. 

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