Journal of Photopolymer Science and Technology

PREPARATION OF LUBRICIOUS MEDICAL TUBE DEVICE BY PLASMA-INDUCED GRAFT POLYMERIZATION

YOSHIKIMI UYAMA, NAOHIDE TOMITA, YOSHITO IKADA

1993 年 6 巻 3 号 p. 325-330
発行日: 1993年
公開日: 2006/08/04

DOIhttps://doi.org/10.2494/photopolymer.6.325

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A heat-contractile tube was plasma-treated and subsequently surface-grafted with a water-soluble monomer. The surface graft polymerization of the monomer was performed in the presence of a small amount of riboflavin with the photo-induction method which required neither degassing process nor heating. The grafted surface was found to become almost permanently very hydrophilic and slippery when brought into contact with water. The role of riboflavin on the graft polymerization in an aerated monomer solution was also discussed.

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LOW-FRICTIONAL HYDROPHILIC SURFACE BY PLASMA-INITIATED GRAFT COPOLYMERIZATION

MAKOTO ONISHI, KENICHI SHIMURA

1993 年 6 巻 3 号 p. 331-336
発行日: 1993年
公開日: 2006/08/04

DOIhttps://doi.org/10.2494/photopolymer.6.331

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The aim of this study is to prepare materials with lubricious surfaces to be used in the manufacture of invasive medical devices such as catheters thus to minimize injury and patient discomfort during application. A water-soluble polymer, poly(N, N-dimethylacrylamide) (PDMAA), has been grafted onto the films of poly(ethylene terephthalate), polyethylene and polypropylene to render their surfaces lubricious. After exposing the films to argon plasma, the films were allowed to react with DMAA vapor to produce the graft polymer (plasma-graft). PDMAA grafted surfaces, characterized by ESCA and IR, had a low friction coefficient when wet, and the lubricity was durable. The plasma-graft onto the surfaces pretreated with benzoyl peroxide enriched the PDMAA at the outermost surface and made the surface more lubricious than untreated ones.

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PLASMA TREATMENT FOR SILICONE RUBBER CONTACT LENS SURFACE

MASAMITSU KURIAKI

1993 年 6 巻 3 号 p. 337-338
発行日: 1993年
公開日: 2006/08/04

DOIhttps://doi.org/10.2494/photopolymer.6.337

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DEVELOPMENT OP ATMOSPHERIC PRESSURE GLOW DISCHARGE PLASMA AND ITS APPLICATION ON A SURFACE WITH CURVATURE

Satiko OKAZAKI, Masuhiro KOGOMA

1993 年 6 巻 3 号 p. 339-342
発行日: 1993年
公開日: 2006/08/04

DOIhttps://doi.org/10.2494/photopolymer.6.339

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SURFACE FLUORINATION OF POLY [1-(TRIMETHYLSILYL)-1-PROPYNE] IN CARBON TETRAFLUORIDE PLASMA FOR GAS SEPARATION MEMBRANES

HIDETOSHI KITA, KAZUHIRO TANAKA, KEN-ICHI OKAMOTO, ISAO KAWAFUNE

1993 年 6 巻 3 号 p. 343-350
発行日: 1993年
公開日: 2006/08/04

DOIhttps://doi.org/10.2494/photopolymer.6.343

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Poly[1-(trimethylsilyl)-1-propyne] (PTMSP) has been treated with a glow discharge plasma containing CF₄, CF₄/H₂ or Ar and the chemical composition and structure of plasma-treated surface layer of PTMSP were examined with Fourier transform infrared spectroscopy-attenuated total reflection (FTIR-ATR) and X-ray photoelectron spectroscopy (XPS) studies. Gas permeation behavior of plasma-treated PTMSP were also reported. The series resistance model was used to estimate the transport properties of the fluorinated polymer layer. The fact that plasma fluorination of PTMSP leads to a reduction in permeation rate of O₂ and N₂ accompanied by a significant increase in selectivity of O₂ to N₂ is especially interesting from a standpoint of membrane separation,

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Strengthening of Cement Composites with Surface Modification Carbon Fiber by Cold Plasma

Akira KOJIMA, Takeo OHTE, Sugio OHTANI

1993 年 6 巻 3 号 p. 351-352
発行日: 1993年
公開日: 2006/08/04

DOIhttps://doi.org/10.2494/photopolymer.6.351

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Modification of Cotton Fiber by Low Temperature Plasma

Shizuo KUBOTA, Kozo EMORI

1993 年 6 巻 3 号 p. 353-360
発行日: 1993年
公開日: 2006/08/04

DOIhttps://doi.org/10.2494/photopolymer.6.353

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Cotton fiber was modified by low temperature plasma of air, oxygen and argon. The modification speed with 13.56MHz-waves was faster than it was with 20KHz- waves. The modification speeds, in descending order, were as follows: oxygen>air>argon plasma.
When the cotton fiber was modified by low temperature plasma treatment, flexual rigidity decreased and ductility increased. Water absorption increased, as did crease resistance, drying rate and degree of crystallinity. On the other hand, equilibrium moisture regain, K/S value of reactive dye and direct dye decreased. The soil release property developed through air and oxygen plasma treatment. From the ESCA spectra, it was found that the fiber surface quality was reformed from C-H bond< C-O bond as a result of oxygen and air plasma treatment, and from C-H bond > C-O bond by argon plasma treatment. With weight loss 18.69% by air plasma treatment, tear strength retention of treated cotton broad was 73.8% in warp and 77.0% in fill.

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APPLICATION OF LOW TEMPERATURE PLASMA TO THE FABRIC AND THE ELECTRIC MATERIAL

TAKAO AKAGI

1993 年 6 巻 3 号 p. 361-370
発行日: 1993年
公開日: 2006/08/04

DOIhttps://doi.org/10.2494/photopolymer.6.361

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Low temperature plasma has two effects, one is plasma treatment, etching, introduction of functional group, crosslinking, the other is plasma polymerization. And low temperature plasma does not change the bulky properties of polymer. Author studied the aplication of low temperature plasma to the fabric and the electric material.
Polyester fabric which has deep and vivid color, polyester fabric coated or laminated by polyurethane which has no defect of migrating out of dispered dyestuff, light interference fabric, polyester mesh screen fabric for printing the integrated circuit were developed by low temperature plasma.

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NATURE OF PLASMA-INDUCED FREE RADICALS IN POLYCARBOHYDRATES STUDIED BY ELECTRON SPIN RESONANCE

MASAYUKI KUZUYA, JUNJI NIWA, AKIHIRO NOGUCHI, KAIJUN XU

1993 年 6 巻 3 号 p. 371-374
発行日: 1993年
公開日: 2006/08/04

DOIhttps://doi.org/10.2494/photopolymer.6.371

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POLYMER PROCESSING WITH EXCIMER LASERS

SHIN-ICHI ISHIZAKA

1993 年 6 巻 3 号 p. 375-378
発行日: 1993年
公開日: 2006/08/04

DOIhttps://doi.org/10.2494/photopolymer.6.375

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PHOTOCHEMICAL MODIFICATION OF FLUORORESIN FOR BONDING FLUORORESIN AND EPOXYRESIN USING EXCIMER LASER

Masataka MURAHARA, Masayuki OKOSHI

1993 年 6 巻 3 号 p. 379-384
発行日: 1993年
公開日: 2006/08/04

DOIhttps://doi.org/10.2494/photopolymer.6.379

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The chemical stability of fluororesin is attributed to the C-F bond composed. Thus, it is considered to pull out the fluorine atoms selectively from the area irradiated with an excimer laser light and to replace them with functional group depending on the purpose.
In this study, B(CH₃)₃ for oleophilic or B(OH)₃ for hydrophilic property was employed. As a result, the resin surface exposed by Patterned ArF laser light turned to be oleophilic or hydrophilic. The reformed two samples and stainless steel plate were bonded together with the epoxy bonding agent, and tensile strength tests were conducted. The strength was 130Kgf/cm²

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EXCIMER LASER IRRADIATION EFFECTS ON ETHYLENE-TETRAFLUOROETHYLENE COPOLYMER

Yuji HAMADA, Shunichi KAWANISHI, Masanobu NISHII, Yuichi SHIMIZU, Shun ...

1993 年 6 巻 3 号 p. 385-392
発行日: 1993年
公開日: 2006/08/04

DOIhttps://doi.org/10.2494/photopolymer.6.385

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It was reported that excimer laser irradiation on ethylene- tetrafluoroethylene copolymer (ETFE) provides the changes of the chemical structure. Irradiation with an ArF laser at wavelength of 193nm formed polyene in a whole ETFE film, and with a KrF laser at wavelength of 248nm induced the carbonization of ETFE. On the other hand, the surface analysis by X-ray photoelectron spectroscopy made it clear that irradiation with the ArF and KrF lasers formed the oxidation products at the surface of the ETFE film. These chemical changes at the surface of the ETFE film induced by the laser irradiation were different from those at the bulk of the film. The result of the depth profiling measurement at the surface of the ETFE film indicated that the oxidation of ETFE induced by excimer laser irradiation proceeded at the surface, which resulted from the existence of oxygen in air.

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PHOTOABLATIVE BEHAVIOR OF POLYIMIDE IRRADIATED BY SEVERAL SHORT PULSE LASERS

Keiko ITO, Masaharu MORIYASU, Hiromichi KAWASUMI

1993 年 6 巻 3 号 p. 393-400
発行日: 1993年
公開日: 2006/08/04

DOIhttps://doi.org/10.2494/photopolymer.6.393

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The photoablative behavior of polyimide irradiated by short pulse lasers whose wavelengths are 248nm, 266nm, 532nm, and 1064nm has been studied for drilling viaholes on the high density circuit boards. The etching mechanism is discussed by the calculations based on the solution of the one- dimentional heat equation. These calculations reveal that a low-damage hole is obtained by irradiation with the short pulse laser of nanoseconds and the dense temperature distribution to surface accompanied with a high absorption coefficient for short wavelength laser. It is derived that the temperature raised by a single irradiation with the threshold energy for ablation is approximately equal to the volatile temperature on each laser. Lt is roughly estimated that a low-damage hole is produced on polyimide, even if the repeated irradiation of 1000pps is given by 248nm or 266nm lasers.

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LASER ABLATION OF POLYIMIDE AT 308NM: CHARACTERIZATION OF ABLATION PRODUCTS

FUMIO KOKAI

1993 年 6 巻 3 号 p. 401-408
発行日: 1993年
公開日: 2006/08/04

DOIhttps://doi.org/10.2494/photopolymer.6.401

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XeCl laser ablation of polyimide (PI) films in air and in a vacuum (1.3× 10^-4Pa) was studied in terms of etch depth and ablated surfaces. For the fluence conditions of 100-300mJ/cm², it was found that etch depths obtained in the vacuum were 20-30% greater than those obtained in air. X- ray photoelectron spectroscopy (XPS) showed that carbon-rich surfaces were produced after the irradiation of a single laser pulse in both air and vacuum. However, there were some differences in atomic ratios and bonding environments between the two ablated surfaces. The formation mechanism of these surfaces is discussed with emphasis on the influence of the ambient atmosphere. Furthermore, XPS results showed that more carbon-rich deposits were formed from laser ablation of PI. By mass spectrometry, carbon atoms with/without hydrogen atoms were detected as the main fragments of PI molecules. The chemical structures of deposits suggest the difference in the contribution of the fragments for the deposition process.

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Processing of composite materials by using laser ablation

Shigeru Yamaguchi, Kazuo Sekine, Mikio Mori, Yoichi Kenmochi

1993 年 6 巻 3 号 p. 409-414
発行日: 1993年
公開日: 2006/08/04

DOIhttps://doi.org/10.2494/photopolymer.6.409

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Machining of Fiber Reinforced Plastics (FRPs) were demonstrated using an intense excimer laser radiation at wavelengths of and 193nm (ArF) and 308nm (XeCl). Dependence of cutting performance on various parameters such as laser wavelengths, energy fluence, and pulse repetition frequency were investigated. For both wavelength, the removal rate was measured to be approximately 2μm/pulse with a minimum thermal degradation of the materials. The ablation threshold was greater than 0.5J/cm² at 193nm. A considerably reduced threshold at 308nm was found for the materials taken up in this study. The cutting kerf processed by an excimer laser exhibits quite favorable for precisemachining.

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SCANNING TUNNELING MICROSCOPY OF HIGHLY ORIENTED PYROLYTIC GRAPHITE ABLATED WITH EXCIMER LASER

HIROYUKI NIINO, HIDEO KOMIZU, YASUJIRO KAWABATA, AKIRA YABE

1993 年 6 巻 3 号 p. 415-420
発行日: 1993年
公開日: 2006/08/04

DOIhttps://doi.org/10.2494/photopolymer.6.415

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SYNTHESIS OF THIN LAYER OF FLUORINATED POLYMER BY LASER CVD-DIRECT SYNTHESIS OF PERFLUOROPOLYETHER THIN FILM ON SURFACE BY OXIDATIVE POLYMERIZATION OF A ERFLUOROPROPENE-OXYGEN MIXTURE USING AN ArF EXCIMER LASER

TETSURO MAJIMA, KYOKO SUGITA, AIKO NAKAO, SATOSHI MATSUNUMA, KATSUO AB ...

1993 年 6 巻 3 号 p. 421-428
発行日: 1993年
公開日: 2006/08/04

DOIhttps://doi.org/10.2494/photopolymer.6.421

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Thin film of fluorinated polymer (perfluoropolyether) was synthesized directly on surface of several substrates by laser-induced chemical vapor deposition (CVD) technique. A hexafluoropropene-oxygen mixture was used as a starting material. The reaction proceeded through oxidative polymerization of the mixture induced by UV-irradiation using an ArF excimer laser at 193nm The mechanism of the oxidative polymerization of hexafluoropropene was discussed in terms of free radical initiators formed in the photoreaction.

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ORGANIC THIN FILMS FORMATION BY LASER ABLATION

KENJIN HIGAKI, CHIAKI NAGAI, OSAMU MURATA, HAYAMI ITOH

1993 年 6 巻 3 号 p. 429-432
発行日: 1993年
公開日: 2006/08/04

DOIhttps://doi.org/10.2494/photopolymer.6.429

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