Poly film ATRP initiators

As an illustration of the application of these techniques, the surface of poly(ethylene terephthalate) (PET) films has been modified via the grafting of polyacrylamide (PAM) by surface-initiated atom transfer radical polymerization (ATRP) and UV-initiated grafting in order to obtain a film of PET with a hydrophilic surface [15c],... 

Another kind of amphiphilic block copolymer-grafted MWCNTs was prepared by sequential ATRP of styrene and fBA using CNT-Br-1 as the initiator, followed by hydrolysis of the poly(tert-butyl acrylate) (P BA) block into PAA," as shown in Figure 5.12. The polymer amount of the second block can also be adjusted by the feed ratio of fBA to polystyrene (PS)-grafted MWCNTs, demonstrating the living characteristics of the block copolymerization. The core-shell amphiphilic nano-object can self-organize into a film at the interface of chloroform and water. 

Farhan et al. [25] reported surface-initiated polymerizations from polymeric surfaces of commercially important polyester films, poly(ethylene terephthalate) (PET), and poly(ethylene naphthalate) (PEN). Patterned self-assembled monolayers (SAMs) of the trichlorosilane initiator were first immobilized on the surface through a soft lithographic method of microcontact printing (ICP). Grafting from the surface was initiated via controlled ATRP, under aqueous conditions, to create patterned brushes of the ther-moresponsive polymer poly(N-isopropylacrylamide) (PNIPAm), as shown in Figure 1.8. 

Markedly, surface-initiated ATRP provides the opportunity to use a variety of functional monomers, to tailor the composition and thickness of the brushes, and to prepare multiple functional surfaces. For example, Zhang et al. prepared poly(methyl methacrylate) (PMMA), poly(acrylamide) (PAAM), and their diblock copolymer (PMMA/PAAM) on the surface of PET film by surface-initiated ATRP [59]. The results indicated that the surface properties of PET film were greatly improved by grafted polymer, the surface of PET film modified by PAAM was hydrophilic, and the surface of PET film modified by diblock copolymer was amphiphilic. This kind of modified PET film may be applied as biocompatible materials, amphiphilic functional film, or conductive film. 

Zhang, H., Shouro, D., Itoh, K., Takata, T., Jiang, Y. 2008. Grafting polymer from poly(ethylene terephthalate) films by surface-initiated ATRP... 

Bantz, M.R., Brantley, E.L., Weinstein, R.D., Moriarty, R.D., and Jermings, G.K. 2004. Effect of fractional fluorination on the properties of ATRP sm-face-initiated poly(hydroxyethyl methacrylate) films. 1. Phps. Chem. B 108 9787-9794. 

He, R, Luo, B., Yuan, S., Liang, B., Choong, C., Rehkonen, S.O., 2014. PVDF film tethered with RGD-click-poly(glycidyl methacrylate) brushes by combination of direct surface-initiated ATRP and chck chemistry for improved cytocompatibihty. RSC Adv. 4,105-117. http //dx.doi. org/10.1039/c3ra44789h. 

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