Plasma-Induced Graft Polymerization onto Powders

Iriyama, Yu; Ikeda, Shouji

doi:10.1295/polymj.26.109

Cited by 15 publications

(10 citation statements)

References 6 publications

(1 reference statement)

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“…Some of the radicals on material surfaces produced by plasma treatment can initiate the graft polymerization of vinyl monomers [17][18][19] . All these are about plasma-initiated graft polymerization of vinyl monomers on bulk materials, but few investigations about plasma-initiated graft polymerization of vinyl monomers onto powder, especially inorganic powder, were reported [20] . It is difficult to handle powder in plasma because of its aggregation and large surface area per mass unit.…”

Section: Introductionmentioning

confidence: 99%

High frequency discharge plasma induced grafting of polystyrene onto titanium dioxide powder

Zhong

Meng

2007

J. Wuhan Univ. Technol.

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Grafting of polystyrene (PS) onto titanium dioxide powder was investigated. The graft polymerization reaction was induced by high frequency discharge produced N 2 plasma treatment of the surfaces of titanium dioxide. IR , XPS and TGA results show that PS was grafted on the titanium dioxide powder. And the crystal structure of the titanium dioxide powder observed by XRD was unchanged after plasma treatment.

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Section: Introductionmentioning

confidence: 99%

High frequency discharge plasma induced grafting of polystyrene onto titanium dioxide powder

Zhong

Meng

2007

J. Wuhan Univ. Technol.

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“…34 -39 Most of these are about plasma-initiated graft polymerization of vinyl monomers on bulk materials, but few investigations have been reported about plasma-initiated graft polymerization of vinyl monomers on powder, especially inorganic powder. 40 It is difficult to handle powder in plasma because of its aggregation and large surface area per mass unit. In surface modification by plasma, it is necessary to touch the surface of the powder with plasma.…”

Section: Introductionmentioning

confidence: 99%

“…Some of the radicals on material surfaces produced by plasma treatment can initiate graft polymerization of vinyl monomers 34–39. Most of these are about plasma‐initiated graft polymerization of vinyl monomers on bulk materials, but few investigations have been reported about plasma‐initiated graft polymerization of vinyl monomers on powder, especially inorganic powder 40. It is difficult to handle powder in plasma because of its aggregation and large surface area per mass unit.…”

Section: Introductionmentioning

confidence: 99%

Plasma induced grafting of PSt onto titanium dioxide powder. II

Zhong¹,

Meng²,

Ou³

et al. 2005

J of Applied Polymer Sci

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Grafting of polystyrene (PSt) onto titanium dioxide powder was investigated in this study. The graft polymerization reaction was induced by N 2 plasma treatment of the surfaces of the titanium dioxide powder. IR and XPS results showed that PSt was grafted onto the titanium dioxide powder. The crystal structure of the titanium dioxide powder observed by XRD spectra was unchanged after plasma graft polymerization. In the grafting reaction, the grafting yield increased with the plasma power, the plasma treatment time, and the grafting reaction, but it increased first then decreased after reaching 50°C. The type of monomers also has an effect on the grafting yield.

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“…(2) Moving bed: solid particles are slightly expanded by either mechanical agitation or gravitational force. Rotary drums can be used as a reactor with low energy plasma but powder dispersion is not satisfactory (Iriyama and Ikeda, 1994). (3) Fluidized bed reactor: powders are suspended above the minimum fluidizing velocity and the plasma is generated in the upper part of a stationary bed (Inagaki et al, 1992;Matsukata et al, 1994;Park and Kim, 1994.…”

Section: Introductionmentioning

confidence: 99%

Surface Treatment of Polymeric Fine Powders by CF4 Plasma in a Circulating Fluidized Bed Reactor

Jung

Park

Kim

2004

J. Chem. Eng. Japan

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A low-pressure plasma surface treatment of polymeric powders was carried out in a circulating fluidized bed (CFB) reactor (10 mm-I.D. × × × × × 800 mm-high) with CF 4 glow discharge. The effects of solid circulation rate, treatment time and radio frequency (rf) power of plasma on fluorination of high-density polyethylene (HDPE) powders have been determined. X-ray photoelectron spectroscopy (XPS) and the contact angle measurements were made to characterize the surfaces of powders. Solid holdup in the CFB plasma reactor mainly governs the stability of plasma glow and the surface property of the powders. Surface of HDPE powders is fluorinated into CHF-CH 2 , CHF-CHF and CF 2 groups. The extent of fluorination increases up to 54% with the treatment time and rf power. The atomic percent of surface fluorine content increases with the composite parameters [(W/FM)t] and [(W/FM)t]/m down to 2,500 GJ•s/kg-gas and 19.8 GJ•s/kg-solid, respectively, thereafter it remains constant.

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Plasma-Induced Graft Polymerization onto Powders

Cited by 15 publications

References 6 publications

High frequency discharge plasma induced grafting of polystyrene onto titanium dioxide powder

High frequency discharge plasma induced grafting of polystyrene onto titanium dioxide powder

Plasma induced grafting of PSt onto titanium dioxide powder. II

Surface Treatment of Polymeric Fine Powders by CF4 Plasma in a Circulating Fluidized Bed Reactor

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