| 학회 |
한국화학공학회 |
| 학술대회 |
2002년 가을 (10/24 ~ 10/26, 서울대학교) |
| 권호 |
8권 2호, p.3777 |
| 발표분야 |
유동층 |
| 제목 |
순환유동층 반응기를 이용한 HDPE 입자의 CF4 플라즈마 표면개질 |
| 초록 |
A low-pressure plasma surface treatment of polymeric powders was carried out in a circulating fluidized bed (CFB) reactor (10mm-I.D. 800mm-high) with CF4 glow discharge. The effects of solid circulation rate, treatment time and radio frequency (rf) power of plasma on fluorination of HDPE powders have been determined. X-ray photoelectron spectroscopy (XPS) and the contact angle measurements were used to characterize the surfaces of powders. Solid holdup in the CFB plasma reactor mainly governs the stability of plasma glow and the surface property of the powders. Surface of HDPE powders is fluorinated into CHF-CH2, CHF-CHF and CF2 groups. The extent of fluorination increases up to 54% with the treatment time and rf power. The performance of CFB reactor is compared to that in a bubbling fluidized bed based on a composite parameter [(W/FM)t] and the composite parameter per given powder inventory [(W/FM)t]/I. The CFB reactor out performs about 1.6 times compared to a bubbling fluidized bed to modify the polymeric surface from hydrophilic to hydrophobic. |
| 저자 |
정순화, 박성희, 김상돈
|
| 소속 |
KAIST 생명화학공학과 |
| 키워드 |
CFB; cold plasma; surface modification; CF4 plasma; polyethylene
|
| E-Mail |
|
| VOD |
VOD 보기 |
| 원문파일 |
초록 보기 |
