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Synthesis, Molecular and Microstructural Study of Poly-N-Vinylpyrrolidone Oximo-L-Valyl-Siliconate with IR, 1H-NMR and SEM
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  • Synthesis, Molecular and Microstructural Study of Poly-N-Vinylpyrrolidone Oximo-L-Valyl-Siliconate with IR, 1H-NMR and SEM
  • Synthesis, Molecular and Microstructural Study of Poly-N-Vinylpyrrolidone Oximo-L-Valyl-Siliconate with IR, 1H-NMR and SEM
저자명
Singh. Man,Padmaja. G. Vani
간행물명
Bulletin of the Korean Chemical Society
권/호정보
2010년|31권 7호|pp.1869-1874 (6 pages)
발행정보
대한화학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

By reducing PVP with $H_2NOH$.HCl and NaOH 2:2:1 mass ratios in aqueous ethanol, poly-N-vinyl pyrrolidone oxime [PVPO] was prepared with 92% yield. Applying the sol-gel concept, orthosilicic acid [OSA] was made by hydrolyzing TEOS with ethanol in 1:0.5 molar ratios using 1 N KOH aqueous solution as a catalyst. The OSA + PVPO + $_L$-Valine ($alpha$-amino acid) were mixed with pure ethanolic medium in 1:2:2 mass ratios and refluxed at $78^{circ}C$ and 6 pH for 6.5 h. A white residue of poly-N-vinyl pyrrolidone oximo-L-valyl-siliconate [POVS] appeared after 5 h. The heating of reaction mixture was stopped and the contents were brought to NTP. The residue formation of POVS was intensified with lowering a temperature and completely solidified within 5 h, was filtered using a vacuum pump with Whatmann filter paper no. 42. The residue of POVS was washed several times with 20% aqueous cold ethanolic solution and dried in vacuum chamber at $25^{circ}C$ for 24 h. The MP was noted above $350^{circ}C$. Structural and internal morphology were analyzed with IR and $^1H$-NMR, and SEM respectively. A drug loading and transporting ability of the POVS in water and at pH = 5 and 8 was determined chromatographically.