Surface modification of polypropylene under argon and oxygen-RF-plasma conditions

1997 ◽  
Vol 2 (3) ◽  
pp. 177-198 ◽  
Author(s):  
S. D. Lee ◽  
M. Sarmadi ◽  
F. Denes ◽  
J. L. Shohet
Keyword(s):  
Surface Modification ◽  
Rf Plasma

Plasma Surface Modification of Silica and its Application in Epoxy Molding Compounds for Large-Scale Integrated Circuits Packaging

2010 ◽  
Vol 158 ◽  
pp. 184-188 ◽  
Author(s):  
Ming Shan Yang ◽  
Lin Kai Li ◽  
Jian Guo Zhang
Keyword(s):  
Surface Modification ◽  
Acrylic Acid ◽  
Integrated Circuits ◽  
Plasma Polymerization ◽  
High Speed ◽  
Large Scale ◽  
Treatment Time ◽  
Rf Plasma ◽  
Formaldehyde Resin ◽  
Molding Compounds

The surface modification of silica for epoxy molding compounds (EMC) was conducted by plasma polymerization using RF plasma (13.56MPa), and the modification factors such as plasma power, gas pressure and treatment time were investigated systematically in this paper. The monomers utilized for the plasma polymer coatings were pyrrole, 1,3-diaminopropane, acrylic acid and urea. The plasma polymerization coating of silica was characterized by FTIR, contact angle. Using the silica treated by plasma as filler, ortho-cresol novolac epoxy as main resin, novolac phenolic-formaldehyde resin as cross-linking agent and 2-methylmizole as curing accelerating agent, the EMCs used for the packaging of large-scale integrated circuits were prepared by high-speed pre-mixture and twin roller mixing technology. The results have shown that the surface of silica can be coated by plasma polymerization of pyrrole, 1,3-diaminopropane, acrylic acid and urea, and the comprehensive properties of EMC were improved.

Controlled surface modification of Ti–40Nb implant alloy by electrochemically assisted inductively coupled RF plasma oxidation

2013 ◽  
Vol 9 (11) ◽  
pp. 9201-9210 ◽  
Author(s):  
Markus Göttlicher ◽  
Marcus Rohnke ◽  
Arne Helth ◽  
Thomas Leichtweiß ◽  
Thomas Gemming ◽  
...  
Keyword(s):  
Surface Modification ◽  
Rf Plasma ◽  
Plasma Oxidation ◽  
Inductively Coupled

Surface modification of PET films with RF plasma and adhesion ofin situ evaporated Al on PET

1994 ◽  
Vol 22 (1-12) ◽  
pp. 224-229 ◽  
Author(s):  
Quoc Toan Le ◽  
J. J. Pireaux ◽  
J. J. Verbist
Keyword(s):  
Surface Modification ◽  
Rf Plasma ◽  
Pet Films

Plasma Component Filtering through a Hole Using the Sheath Generated around the Hole on Surface Modification by RF Plasma

1997 ◽  
Vol 36 (Part 1, No. 11) ◽  
pp. 7004-7008
Author(s):  
Yori Izumi ◽  
Takeo Ohte ◽  
Akira Kojima
Keyword(s):  
Surface Modification ◽  
Rf Plasma ◽  
Plasma Component

scholarly journals Surface Modification of Pure Iron by rf Plasma Nitriding with dc Bias Voltage Impression.

1997 ◽  
Vol 48 (3) ◽  
pp. 317-323
Author(s):  
Takayasu SATO ◽  
Isao NOUCHI ◽  
Masato SAHARA ◽  
Shigeru ITO ◽  
Kazuo AKASHI
Keyword(s):  
Surface Modification ◽  
Bias Voltage ◽  
Pure Iron ◽  
Plasma Nitriding ◽  
Rf Plasma ◽  
Dc Bias

Surface modification of spectra?-900 polyethylene fibers using RF-plasma

1992 ◽  
Vol 13 (3) ◽  
pp. 207-212 ◽  
Author(s):  
Hossein Rostami ◽  
Bassel Iskandarani ◽  
Ihab Kamel
Keyword(s):  
Surface Modification ◽  
Rf Plasma ◽  
Polyethylene Fibers

PLASMA-ENHANCED SURFACE MODIFICATION OF LOW LINEAR-DENSITY POLYETHYLENE CATHETERS

2001 ◽  
Vol 01 (01) ◽  
pp. 17-31 ◽  
Author(s):  
K. KOMVOPOULOS
Keyword(s):  
Surface Modification ◽  
Linear Density ◽  
Surface Texturing ◽  
Surface Cleaning ◽  
Rf Plasma ◽  
Working Pressure ◽  
Force Microscopy ◽  
Angle Measurements ◽  
Plasma Treatments ◽  
Modification Technique

Modification of the surface chemistry, topography, and frictional characteristics of medical-grade low linear-density polyethylene catheters with various plasma chemistries was accomplished in a radio-frequency (RF) vacuum chamber. Two different types of plasma treatments were examined. For surface texturing and chemistry modification, the catheters were treated with either He or CF 4 gases for 0.5–60 min at RF power in the range of 30–1000 W and working pressure between 0.2 and 2 Torr. For grafting of a low friction film, the catheters were exposed to pure Ar plasma at 400 W for 2 min (surface cleaning) and then to CH 4, CH 4/ CF 4, or H 2/ CF 4 plasmas at power of 250–550 W and working pressure of 0.2–0.8 Torr for 10–60 min (surface modification). The effects of the different plasma treatments on the surface texture, chemical behavior, and friction characteristics of the catheters are discussed in light of results obtained from contact surface profilometry, scanning electron microscopy, atomic force microscopy, contact angle measurements, infrared spectroscopy, and friction experiments. The findings of this study demonstrate that surface crosslinking and grafting of desirable functional groups by RF plasma treatment is an effective low-temperature surface modification technique for polymeric medical devices.

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