Identification of hydrophilic group formation on polymer surface during Ar{sup +} ion irradiation in O{sub 2} environment
- Korea Inst. of Science and Technology, Seoul (Korea, Republic of). Ceramic Div.
- Samyang Group R and D Center, Taejon (Korea, Republic of)
Ar{sup +} ion irradiation on low density polyethylene (LDPE), and polystyrene (PS) was performed in an O{sub 2} environment in order to improve wettability of polymers to water and to identify the formation of hydrophilic groups originated from chemical reactions on the surface of polymers. Doses of a broad Ar{sup +} ion beam of 1 keV energy were changed from 5 {times} 10{sup 15} to 1 {times} 10{sup 17}/cm{sup 2} and the rate of oxygen gas flowing near the sample surface was varied from 0 to 7 ml/min. The contact angle of polymers was not reduced much by Ar{sup +} ion irradiation without oxygen gas. However, it dropped largely to a minimum of 35{degree} and 26{degree} for Ar{sup +} ion irradiation in the presence of flowing oxygen gas on LDPE and PS, respectively. From x-ray photoelectron spectroscopy analysis, it was observed that hydrophilic groups were formed on the surface of polymers through an ion-assisted chemical reaction between the ion-induced unstable chains and oxygen. The newly formed hydrophilic group was identified as {single_bond}(C{double_bond}){single_bond} bond and {single_bond}(C{double_bond}O){single_bond}O{single_bond} bond. The contact angle of polymer was greatly dependent on the hydrophilic group formed on the surface.
- OSTI ID:
- 549802
- Report Number(s):
- CONF-961202-; ISBN 1-55899-342-8; TRN: 98:000444
- Resource Relation:
- Conference: 1996 Fall meeting of the Materials Research Society (MRS), Boston, MA (United States), 2-6 Dec 1996; Other Information: PBD: 1997; Related Information: Is Part Of Materials modification and synthesis by ion beam processing; Alexander, D.E. [ed.] [Argonne National Lab., IL (United States)]; Cheung, N.W. [ed.] [Univ. of California, Berkeley, CA (United States)]; Park, B. [ed.] [Georgia Inst. of Tech., Atlanta, GA (United States)]; Skorupa, W. [ed.] [Research Center Rossendorf, Inc., Dresden (Germany)]; PB: 748 p.; Materials Research Society symposium proceedings, Volume 438
- Country of Publication:
- United States
- Language:
- English
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