Determination of specific surface area of solids by adsorption of nitrogen ; single - point diffenrential method according to haul and duembgen 用氮的吸收法測定固體比表面面積. haul及duembgen的單
The interface behavior between essence and ethylene - vinyl acetate copolymer pallets was studied so that necessary data were obtained to guide the preparation of fragrant masterbatch . the adsorption type and wettability between essence and the copolymer pallets were analysed by measurements of fourier transform infrared spectrum , surface tension , contact angle and specific surface area . the technical factors affecting absorptivity such as the charge ratio , temperature , pressure and stirring speed were studied by series of adsorption experiments . the results showed that the adsorption of essence on the surface of ethylene - vinyl acetate copolymer pallets is physical in nature . essence couldn ' t moisten the surface of ethylene - vinyl acetate copolymer pallets absolutely , but it could be soaked into the surface of the pallets partly . adsorptivity could be increased by enhancing the temperature , pressure and stirring speed , but the extension of adsorption time had little influence on adsorptivity 研究了香精與乙烯/醋酸乙烯共聚物粒子之間的界面行為,以便為香型母粒的制備提供必要的理論依據(jù).利用傅立葉變換紅外光譜、表面張力、接觸角及比表面面積等測定手段,分析了香精與載體之間的吸附類型和潤濕作用.并通過一系列吸附實驗,討論了配料比、溫度、壓力、攪拌等工藝條件對吸附量的影響.結(jié)果表明,香精在乙烯/醋酸乙烯共聚物粒子表面的吸附為物理吸附;香精無法完全潤濕載體粒子表面,但可以對其形成部分浸潤;提高溫度、壓力、攪拌速度可以增加吸附量,而延長吸附時間對增加吸附量貢獻不大
Abstract : the interface behavior between essence and ethylene - vinyl acetate copolymer pallets was studied so that necessary data were obtained to guide the preparation of fragrant masterbatch . the adsorption type and wettability between essence and the copolymer pallets were analysed by measurements of fourier transform infrared spectrum , surface tension , contact angle and specific surface area . the technical factors affecting absorptivity such as the charge ratio , temperature , pressure and stirring speed were studied by series of adsorption experiments . the results showed that the adsorption of essence on the surface of ethylene - vinyl acetate copolymer pallets is physical in nature . essence couldn ' t moisten the surface of ethylene - vinyl acetate copolymer pallets absolutely , but it could be soaked into the surface of the pallets partly . adsorptivity could be increased by enhancing the temperature , pressure and stirring speed , but the extension of adsorption time had little influence on adsorptivity 文摘:研究了香精與乙烯/醋酸乙烯共聚物粒子之間的界面行為,以便為香型母粒的制備提供必要的理論依據(jù).利用傅立葉變換紅外光譜、表面張力、接觸角及比表面面積等測定手段,分析了香精與載體之間的吸附類型和潤濕作用.并通過一系列吸附實驗,討論了配料比、溫度、壓力、攪拌等工藝條件對吸附量的影響.結(jié)果表明,香精在乙烯/醋酸乙烯共聚物粒子表面的吸附為物理吸附;香精無法完全潤濕載體粒子表面,但可以對其形成部分浸潤;提高溫度、壓力、攪拌速度可以增加吸附量,而延長吸附時間對增加吸附量貢獻不大