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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 吳太煥
- 발행연도
- 2013
- 저작권
- 영남대학교 논문은 저작권에 의해 보호받습니다.
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Abstract
Poly(vinyl alcohol) (PVA) is extensively used for selective embolization of vascular lesions due to good biocompatibility, few foreign-body reaction in vivo, high blocking efficiency by good binding property, and ease of treatment. In this study, vinyl pivalate (VPi) was polymerized in bulk at 50℃ using 2,2-azobis(2,4-dimethylvaleronitrile) (ADMVN) as an initiator and potassium hydroxide/mathanol/water for saponification with various stirring shear rates. PVA microfibrils having number-average degree of polymerization (Pn) of 1100, degree of saponification (DS) of 94.87% and s-diad content of 60.4% were obtained by saponification. To make s-PVA microfibrils with radiopacity, Zirconium dioxide (ZrO2) and Barium sulfate (BaSO4) were added into s-PVA microfibrils.
S-PVA/ZrO2 and s-PVA/BaSO4 composite microfibrils of linear form was successfully prepared and the result of EDS spectrum confirmed the presence of the ZrO2 and BaSO4.
Crystalline structure of s-PVA microfibril with ZrO2 and BaSO4 were investigated by XRD experiments. Crystalline characteristic peaks of s-PVA/ZrO2 and s-PVA/BaSO4 structure developed with increasing ZrO2 and BaSO4 concentrations in XRD patterns. The morphology of the composite fibers were greatly affected by the ZrO2 and BaSO4 content in PVA microfibrils.
ZrO2 and BaSO4 can provide PVA with radiopacity property by blending of PVA and ZrO2 and BaSO4. CT value of s-PVA/ZrO2 and s-PVA/BaSO4 composite increased with increasing and BaSO4 contents. The CT value reaches over 1,000 when 12wt% of ZrO2 and 6wt% of BaSO4 were added, respectively.
Poly(vinyl alcohol) (PVA) is extensively used for selective embolization of vascular lesions due to good biocompatibility, few foreign-body reaction in vivo, high blocking efficiency by good binding property, and ease of treatment. In this study, vinyl pivalate (VPi) was polymerized in bulk at 50℃ using 2,2-azobis(2,4-dimethylvaleronitrile) (ADMVN) as an initiator and potassium hydroxide/mathanol/water for saponification with various stirring shear rates. PVA microfibrils having number-average degree of polymerization (Pn) of 1100, degree of saponification (DS) of 94.87% and s-diad content of 60.4% were obtained by saponification. To make s-PVA microfibrils with radiopacity, Zirconium dioxide (ZrO2) and Barium sulfate (BaSO4) were added into s-PVA microfibrils.
S-PVA/ZrO2 and s-PVA/BaSO4 composite microfibrils of linear form was successfully prepared and the result of EDS spectrum confirmed the presence of the ZrO2 and BaSO4.
Crystalline structure of s-PVA microfibril with ZrO2 and BaSO4 were investigated by XRD experiments. Crystalline characteristic peaks of s-PVA/ZrO2 and s-PVA/BaSO4 structure developed with increasing ZrO2 and BaSO4 concentrations in XRD patterns. The morphology of the composite fibers were greatly affected by the ZrO2 and BaSO4 content in PVA microfibrils.
ZrO2 and BaSO4 can provide PVA with radiopacity property by blending of PVA and ZrO2 and BaSO4. CT value of s-PVA/ZrO2 and s-PVA/BaSO4 composite increased with increasing and BaSO4 contents. The CT value reaches over 1,000 when 12wt% of ZrO2 and 6wt% of BaSO4 were added, respectively.
목차
- 목 차 -1. 서론 ...................................................................................................... 12. 실험 및 방법 ................................................................................... 72. 1 재료 ..................................................................................................... 72. 2 VPi의 벌크중합 ................................................................................ 72. 3 PVPi의 비누화 .................................................................................. 82. 4 무기입자를 함유한 s-PVA 마이크로피브릴의 제조 ................ 82. 5 S-PVA 마이크로피브릴의 특성 분석 ........................................... 93. 결과 및 고찰 ...................................................................................... 133. 1 VPi의 벌크중합 ................................................................................ 133. 2 S-PVA 마이크로피브릴의 제조 .................................................... 153. 3 무기입자를 함유한 s-PVA 마이크로피브릴의 제조 ................ 183. 4 S-PVA 마이크로피브릴의 구조 및 물성분석 ............................ 254. 결론 ....................................................................................................... 34참고문헌 ................................................................................................ 36Abstract ....................................................................................................... 39
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