Effect of Oxygen Plasma Treatments on Polypropylene-Epoxy Interfacial Strength

1989 ◽  
Vol 153 ◽  
Author(s):  
E. Occhiello ◽  
M. Morra ◽  
G. Morini ◽  
F. Garbassi
Keyword(s):  
Surface Layer ◽  
Plasma Treatment ◽  
Oxygen Plasma ◽  
Interfacial Strength ◽  
Oxygen Plasma Treatment ◽  
Weak Point ◽  
Angle Measurements ◽  
Plasma Treatments ◽  
Contact Angle Measurements ◽  
Effect Of Oxygen

AbstractThe effect of oxygen plasma treatment on adhesion and surface properties of polypropylene (PP) was assessed. An oxygen rich modified PP layer, immiscible with bulk PP, was formed by the treatment. Contact angle measurements showed that macromolecular motions led with time to rearrangements of the surface layer drastically decreasing its wettability, while its composition, measured by XPS, remained unaffected.The shear strength of PP-epoxy joints increased after plasma treatment. The locus of failure was found to occur at the PP/epoxy interface for untreated PP, within PP in the case of oxygen-plasma-treated samples, close to the modified PP/bulk PP interface. This result suggests that the plasma treament improves the interaction at the PP/epoxy interface, but weakens the mechanical strength of the surface layer thereby creating a weak point at the modified PP/bulk PP interface.

Effect of Oxygen Plasma Treatments on Polypropylene-Epoxy Interfacial Strength

1989 ◽  
Vol 154 ◽  
Author(s):  
E. Occhiello ◽  
M. Morra ◽  
G. Morini ◽  
F. Garbassi
Keyword(s):  
Surface Layer ◽  
Plasma Treatment ◽  
Oxygen Plasma ◽  
Interfacial Strength ◽  
Oxygen Plasma Treatment ◽  
Weak Point ◽  
Angle Measurements ◽  
Plasma Treatments ◽  
Contact Angle Measurements ◽  
Effect Of Oxygen

AbstractThe effect of oxygen plasma treatment on adhesion and surface properties of polypropylene (PP) was assessed. An oxygen rich modified PP layer, immiscible with bulk PP, was formed by the treatment. Contact angle measurements showed that macromolecular motions led with time to rearrangements of the surface layer drastically decreasing its wettability, while its composition, measured by XPS, remained unaffected.The shear strength of PP-epoxy joints increased after plasma treatment. The locus of failure was found to occur at the PP/epoxy interface for untreated PP, within PP in the case of oxygen-plasma-treated samples, close to the modified PP/bulk PP interface. This result suggests that the plasma treament improves the interaction at the PP/epoxy interface, but weakens the mechanical strength of the surface layer thereby creating a weak point at the modified PP/bulk PP interface.

SURFACE CHEMICAL MODIFICATION OF CIIR RUBBER BY HIGH DENSITY PLASMA TREATMENT

2010 ◽  
Vol 24 (15n16) ◽  
pp. 2682-2687 ◽  
Author(s):  
JONG-HYOUNG KIM ◽  
NORITSUGU UMEHARA ◽  
HIROYUKI KOUSAKA ◽  
MAMORU SHIMADA ◽  
MITSURU HASEGAWA
Keyword(s):  
Surface Energy ◽  
Plasma Treatment ◽  
Treatment Time ◽  
Argon Plasma ◽  
Angle Measurements ◽  
Plasma Treatments ◽  
Treatment Conditions ◽  
Contact Angle Measurements ◽  
Effect Of Oxygen ◽  
Oxygen Functionality

This paper has reported the effect of oxygen and argon plasma treatments of CIIR rubber using Attenuated Total Reflectance (ATR) and surface energy measurements. Plasma treatment led to changes in the surface energy from 31 to 45.7 mN/m. Plasma treatment conditions influenced both the changes in surface energy and stability, and they also became more difficult to obtain good contact angle measurements. However, plasma treatments made the interfacial properties to be stabilized. ATR measurements revealed that changes in surface energy with treatment time are due mostly to increased oxygen functionality.

Effect of Oxygen Plasma Treatment on Characteristics of TiO$_{2}$ Photodetectors

2011 ◽  
Vol 11 (11) ◽  
pp. 3031-3035 ◽  
Author(s):  
W. S. Shih ◽  
S. J. Young ◽  
L. W. Ji ◽  
W. Water ◽  
T. H. Meen ◽  
...  
Keyword(s):  
Plasma Treatment ◽  
Oxygen Plasma ◽  
Oxygen Plasma Treatment ◽  
Effect Of Oxygen

Effect of oxygen plasma treatment on performance of ZnO based dye sensitized solar cells

2017 ◽  
Vol 724 ◽  
pp. 348-352 ◽  
Author(s):  
Shubhangi Khadtare ◽  
Avinash S. Bansode ◽  
V.L. Mathe ◽  
Nabeen K. Shrestha ◽  
Chinna Bathula ◽  
...  
Keyword(s):  
Solar Cells ◽  
Plasma Treatment ◽  
Oxygen Plasma ◽  
Dye Sensitized Solar Cells ◽  
Oxygen Plasma Treatment ◽  
Dye Sensitized ◽  
Effect Of Oxygen ◽  
Sensitized Solar Cells

Effect of Oxygen Plasma Treatment on the Porosity and Surface Chemical Nature of Glassy Carbons

1995 ◽  
Vol 176 (1) ◽  
pp. 128-137 ◽  
Author(s):  
M. DOMINGO-GARCIA ◽  
I. FERNÁNDEZ-MORALES ◽  
F.J. LÓPEZ-GARZÓN ◽  
C. MORENO-CASTILLA ◽  
M. PYDA
Keyword(s):  
Plasma Treatment ◽  
Oxygen Plasma ◽  
Chemical Nature ◽  
Oxygen Plasma Treatment ◽  
Surface Chemical ◽  
Effect Of Oxygen

scholarly journals Biomimetic nanostructures for the silicone-biosystem interface: tuning oxygen-plasma treatments of polydimethylsiloxane

2017 ◽  
Vol 9 (2) ◽  
Author(s):  
Bekim Osmani ◽  
Gabriela Gerganova ◽  
Bert Müller
Keyword(s):  
Plasma Treatment ◽  
Oxygen Plasma ◽  
Dynamic Contact Angle ◽  
Dynamic Contact ◽  
Oxygen Plasma Treatment ◽  
Pdms Film ◽  
Pdms Surface ◽  
Force Microscopy ◽  
Angle Measurements ◽  
Hydrophobic Recovery

AbstractPolydimethylsiloxanes (PDMS) have drawn attention because of their applicability in medical implants, soft robotics and microfluidic devices. This article examines the formation of dedicated nanostructures on liquid submicrometer PDMS films when exposed to oxygen-plasma treatment. We show that by using a vinyl-terminated PDMS prepolymer with a molecular weight of 800 g/mol, one can bypass the need of solvent, copolymer, or catalyst to fabricate wrinkled films. The amplitude and periodicity of the wrinkles is tuned varying the thickness of the PDMS film between 150 and 600 nm. The duration of the plasma treatment and the oxygen pressure determine the surface morphology. The amplitude was found between 30 and 300 nm with periodicities ranging from 500 to 2800 nm. Atomic force microscopy was used to measure film thickness, amplitude and wrinkle periodicity. The hydrophobic recovery of the nanostructured PDMS surface, as assessed by dynamic contact angle measurements, scales with nanostructure’s fineness, associated with an improved biocompatibility. The mechanical properties were extracted out of 10,000 nanoindentations on 50×50-μm

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