化学研究与应用
化學研究與應用
화학연구여응용
CHEMICAL RESEARCH AND APPLICATION
2014年
8期
1299-1302
,共4页
乳液聚合%聚乙烯醇%溶解性%丙烯酸%丙烯酸丁酯
乳液聚閤%聚乙烯醇%溶解性%丙烯痠%丙烯痠丁酯
유액취합%취을희순%용해성%병희산%병희산정지
emulsion polymerization%poly( vinyl alcohol)%solubility%acyclic acid%butyl acrylate
本文采用半连续乳液聚合方法,通过引入丙烯酸( AA)和丙烯酸丁酯( BA)与醋酸乙烯酯( VAc)共聚合得到改性的聚醋酸乙烯酯,经过破乳,洗涤,干燥,醇解得到改性聚乙烯醇。采用X射线衍射( XRD)、傅立叶红外光谱( FT-IR)、核磁共振(1 H-NMR)等手段研究了不同比例的丙烯酸和丙烯酸丁酯对聚乙烯醇结构和溶解性的影响,结果表明,改性聚乙烯醇的溶解性得到明显改善,当AA∶BA=6∶4时,浓度为5%的改性聚乙烯醇水溶液在25℃下静置6．5h就能完全溶解于水中；在磁力搅拌下,25min左右就完全溶解。
本文採用半連續乳液聚閤方法,通過引入丙烯痠( AA)和丙烯痠丁酯( BA)與醋痠乙烯酯( VAc)共聚閤得到改性的聚醋痠乙烯酯,經過破乳,洗滌,榦燥,醇解得到改性聚乙烯醇。採用X射線衍射( XRD)、傅立葉紅外光譜( FT-IR)、覈磁共振(1 H-NMR)等手段研究瞭不同比例的丙烯痠和丙烯痠丁酯對聚乙烯醇結構和溶解性的影響,結果錶明,改性聚乙烯醇的溶解性得到明顯改善,噹AA∶BA=6∶4時,濃度為5%的改性聚乙烯醇水溶液在25℃下靜置6．5h就能完全溶解于水中；在磁力攪拌下,25min左右就完全溶解。
본문채용반련속유액취합방법,통과인입병희산( AA)화병희산정지( BA)여작산을희지( VAc)공취합득도개성적취작산을희지,경과파유,세조,간조,순해득도개성취을희순。채용X사선연사( XRD)、부립협홍외광보( FT-IR)、핵자공진(1 H-NMR)등수단연구료불동비례적병희산화병희산정지대취을희순결구화용해성적영향,결과표명,개성취을희순적용해성득도명현개선,당AA∶BA=6∶4시,농도위5%적개성취을희순수용액재25℃하정치6．5h취능완전용해우수중；재자력교반하,25min좌우취완전용해。
Poly(vinyl alcohol)has been synthesized by semi-continues emulsion polymerization of vinyl acetate by adding acyclic acid and butyl acrylate followed by breaking the emulsion,washing,drying and saponification. The structure and solubility of poly (vinyl alcohol) has been studied with different proportion of acrylic acid and butyl acrylate by the analysis of X-ray diffraction (XRD),Fourier transform infrared spectrometer(FT-IR)and Nuclear magnetic resonance(1HNMR). The result shows that the sol-ubility of poly(vinyl alcohol)has been improved obviously. When AA:BA=6:4,the 5%modified poly(vinyl alcohol)can be com-pletely dissolved in the water about 6. 5 hours at 25 ℃ or 25 minutes with magnetic stirring.
