私密直播全婐app免费大渔直播,国产av成人无码免费视频,男女同房做爰全过程高潮,国产精品自产拍在线观看

相關鏈接
聯系方式
  • 通信地址:武漢市珞瑜路1037號
  • 郵編:430074
  • 電話:027-87558172
  • 傳真:027-87543632
  • Email:bien.tan@mail.hust.edu.cn
當前位置:> 首頁 > 論文著作 > 正文
Synthesis of Emulsion-Templated Poly(acrylamide) Using CO2-in-Water Emulsions and Poly(vinyl acetate)-Based Block Copolymer Surfactants.
作者:Tan, Bien; Lee, Jun-Young; Cooper, Andrew I.
關鍵字:ScCO2
論文來源:期刊
具體來源:Macromolecules (Washington, DC, United States) (2007), 40(6), 1945-1954.
發表時間:2007年

We present here a simple and generic method for producing inexpensive and biodegradable polymer surfactants for use in supercrit. CO2.  Low mol. wt. (Mw<7000 g/mol) hydroxyl-terminated poly(vinyl acetate) (PVAc-OH) was synthesized using optimized reaction conditions and iso-Pr ethanol (IPE) as the chain transfer agent.  Oligomeric PVAc-OH (OVAc-OH, Mw<3000 g/mol) was then obtained by supercrit. fluid fractionation.  The OVAc-OH species was converted to the imidazole ester by reaction with carbonyl diimidazole (CDI) and CO2-sol. surfactants were produced by coupling these reactive blocks with poly(ethylene glycol) Me ethers or poly(ethylene glycol) diols.  The surfactants extremely effective in the prodn. of stable CO2-in-water (C/W) emulsions, which were then used as templates to produce emulsion-templated materials with unprecedentedly high levels of porosity for materials produced by this route.  These hydrocarbon surfactants can out-perform perfluorinated species in applications of this type.

主站蜘蛛池模板: 新密市| 酉阳| 武宁县| 邯郸市| 永靖县| 岑溪市| 高州市| 会理县| 乌鲁木齐县| 房山区| 信丰县| 南和县| 湖南省| 临桂县| 石家庄市| 淮安市| 漾濞| 惠水县| 宿州市| 慈利县| 额敏县| 施秉县| 襄城县| 慈利县| 白河县| 昌宁县| 益阳市| 乌拉特后旗| 佛教| 固镇县| 汝州市| 南木林县| 西藏| 嘉鱼县| 武宁县| 东乌| 芦山县| 资溪县| 抚顺县| 香港| 黄陵县|