Surface modifications of polyaniline films by graft copolymerization

Kang, E. T.; Neoh, K. G.; Tan, K. L.; Uyama, Yoshikimi; Morikawa, Noriyuki; Ikada, Yoshito

doi:10.1021/ma00033a020

Cited by 95 publications

(79 citation statements)

References 8 publications

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“…The intensity of radiation at a wavelength of 147 nm (comprising 99% of Xe lamp emission in the VUV region) measured by the ªsunlight-blindº photodiode was 3 Â 10 15 photons/sec cm 2 . Surface modification of the crosslinked EM-150 via thermal graft copolymerization with acrylic acid (AAc) and sodium salt of styrenesulfonic acid (NaSS) was carried according to the methods published earlier [36].…”

Section: Surface Modi®cationmentioning

confidence: 99%

Surface modification and functionalization of electroactive polymer films

Kang

Tan

et al. 1999

Polym. Adv. Technol.

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Section: Surface Modi®cationmentioning

confidence: 99%

Surface modification and functionalization of electroactive polymer films

Kang

Tan

et al. 1999

Polym. Adv. Technol.

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“…8 Similar modifications of a PAN surface have shown improvements in wettability and the production of a self-protonated PAN surface. 9 Surface copolymerization with pretreated surfaces is common practice and is applied to create grafting sites on polymer surfaces. Ultraviolet, 10 high-energy electron 11 and gamma 12 irradiation, plasma treatment 13,14 and ozone exposure 15 are generally applied to form peroxides on the surface in the presence of oxygen and to form polymer radicals in the absence of oxygen (Fig.…”

Section: Surface Graft Copolymerizationmentioning

confidence: 99%

“…PAN, may become self-protonated and conductive via graft copolymerization using specific monomers. 9 Another study 3 involving a PAN substrate has shown that the concentration of AAc graft increases with both increasing monomer concentration and irradiation time during grafting.…”

Section: Resistivity Of Surface Graft Copolymerization Of Pan With Namentioning

confidence: 99%

“…The XPS results 9 show that grafting causes the appearance of an S 2p peak at 168 eV, which is characteristic of a covalently bonded sulphonic acid moiety (-SO 3 ) from the NaSS. At the same time, the N 1s peak develops a tail, indicating positively charged nitrogens (protonated imine nitrogen) in the surface.…”

Section: Resistivity Of Surface Graft Copolymerization Of Pan With Namentioning

confidence: 99%

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Electrical conductivity study of surface-modified polymers

Liesegang

Senn

Pigram

et al. 1999

Surf. Interface Anal.

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This paper presents resistivity data for a range of surface‐grafted and copolymerized polymers and some challenges yet to be faced in resolving the effects of surface modification on their surface properties, in particular on electrical resistivity in their surface regions. The principal substrates used for measurement were polyaniline (PAN), low‐density polyethylene (LDPE) and polytetrafluorethylene (PTFE). Electrical resistivity has been determined as a function of graft monomer type (acrylic acid, sodium salt of styrene sulphonic acid and N,N‐dimethylacrylamide), graft temperature, grafting time and plasma pretreatment time. In the case of grafted PTFE, the effect of an emeraldine coating on resistivity is also determined. Copyright © 1999 John Wiley & Sons, Ltd.

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“…These new functionalities may include improved surface hydrophilicity [3], hydrophobicity [4], biocompatibility [5], conductivity [6], lubricative properties [7] and adhesive properties [8], just to name a few. Among the many techniques used, surface modification via graft copolymerization appears to be the most versatile in the preparation of polymer surfaces with tailored functionalities [9].…”

Section: Introductionmentioning

confidence: 99%