| 학회 |
한국고분자학회 |
| 학술대회 |
2018년 가을 (10/10 ~ 10/12, 경주컨벤션센터) |
| 권호 |
43권 2호 |
| 발표분야 |
고분자가공/복합재료 |
| 제목 |
Fabrication of polylactic acid, polyglycolic acid, hydroxyapatite composite for implant material |
| 초록 |
Polylactic acid(PLA), a bio-absorbable polymer with biocompatibility, has been widely used as bone-fixation devices instead of metal implants in orthopedics. In this study, PLA/polyglycolic acid(PGA) fiber reinforced composite was investigated because PLA didn’t have adequate mechanical property as implant material. The effects of using short PGA fiber rather than unidirectionally aligned fiber were also investigated. Hydroxyapatite(HA) was added to the composite as substitute for bone repairing material owing to its good osteoconductivity. To reduce the HA agglomeration in the composite and enhance the filler effect, it was grafted with PLA. FT-IR and TGA analysis was carried out to confirm whether PLLA was successfully grafted on the surface of HA. Mechanical properties such as tensile strength and flexural strength critical in bone characteristics were measured. Bioactivity was characterized by the growth of apatite on the surface of the composite in simulated body fluid solution. |
| 저자 |
이도영, 고한승, 조재영
|
| 소속 |
서울대 |
| 키워드 |
biodegradable polymer; mechanical property
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| E-Mail |
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