Surface modification of polytetrafluoroethylene by Ar{sup +} irradiation for improving adhesion to other materials

Book · Mon Dec 01 04:00:00 EST 1997

OSTI ID:549803

Koh, S K; Seok, J W; Choi, S C; Choi, W K; Jung, H J ^[1]; Park, S C ^[2]

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1. Korean Inst. of Science and Technology, Seoul (Korea, Republic of). Div. of Ceramics
2. Samyang Group R and D Center, Taejeon (Korea, Republic of)

Ion Irradiation on polytetrafluoroethylene (PTFE) has been carried out to improve adhesion to metal and to adhesive cement. Argon ion was irradiated on the polymer, and amount of Ar{sup +} was changed from 10{sup 14} ions/cm{sup 2} to 1 {times} 10{sup 17} ions/cm{sup 2} at 1 keV, and 4 ml/min of oxygen gas was flowed near the polymer surface during the ion irradiation. Wetting angle was changed from 100 degree to 70--150 degree depending on the ion beam condition. The changes of wetting angle and effects of Ar{sup +} irradiation in oxygen environment were explained in a view of surface morphology due to the ion beam irradiation onto PTFE and formation of hydrophilic group due to a reaction between irradiated polymer chain and the blown oxygen. Strongly enhanced adhesions were explained by interlock mechanism, formation of electron acceptor groups on the modified PTFE, and interfacial chemical reaction between the irradiated surface and the deposited materials.

• OSTI ID: 549803
• Report Number(s): CONF-961202--; ISBN 1-55899-342-8
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
40 CHEMISTRY
ADHESION
ARGON IONS
EXPERIMENTAL DATA
ION BEAMS
POLYTETRAFLUOROETHYLENE
RADIATION EFFECTS
SURFACE PROPERTIES
SURFACE TREATMENTS
WETTABILITY