Release rates from semi-crystalline polymer microcapsules formed by interfacial polycondensation |
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| Institution: | 1. School of Information and Mathematics, Yangtze University, Jingzhou 434023, China;2. Department of Control Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;3. Key Laboratory of Image Processing and Intelligent Control of Education Ministry of China, Wuhan 430074, China;1. Institute of Nuclear Physics, Polish Academy of Sciences, ul. Radzikowskiego 152, 31-342, Cracow, Poland;2. Particle Physics group, University of Antwerp, Groenenborgerlaan 171, Belgium;3. Department of Physics, Ben Gurion University of the Negev, Beer Sheva 8410501, Israel;1. School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK;2. Procter & Gamble, Newcastle-Upon-Tyne Innovation Centre, Whitley Road, Longbenton, Newcastle-upon-Tyne NE12 9TS, UK;1. Tokat Gaziosmanpaşa University, Department of Textile Technology, Tokat, Turkey;2. Tokat Gaziosmanpaşa University, Science and Letter Faculty, Department of Chemistry, Tokat, Turkey |
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| Abstract: | Microencapsulation of active agents, for their controlled release, can be brought about by the method of interfacial polycondensation 1]. In this paper, the permeabilities of the polyurea microcapsules for encapsulated cyclohexane have been determined. It is shown that the product of the permeability and membrane thickness can be changed over at least an order of magnitude by changing the degree of crystallinity of the polymer forming the membranes. |
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