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⵵/ȣ 1997 / ȣ: V.9,no.6,Dec
1() In-situ տ ױ ũ ĸȭ (I)
2(Ÿ) A Study on Microencapsulation of Perfume and Antibiotics by In-situ Polymerzation(I)
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ʷ Urea/formaldehyde(UF) and melamine/formaldehyde(MF) microcapsules containing perfume and 2,4,4\'-trichlroro-2-hydroxydiphenyl ether(DP) were prepared by the in-situ polymerization using urea and formaldehyde. Effects of dispersing agent, accelerating agent, formaldehyde, agitation speed on the mean diameter of microcapsules were investigated. The diameter of microcapsule was decreased with increasing dispersing agent concentration. A slight increase in the diameter was observed when the concentration of film forming material was increased. The diameter of microcapsule was decreased with increasing agitation speed up to 8,000rpm. The mean diameters of UF microcapsule prepared at 8,000rpm are about 3m. A slight decrease in the diameter was observed when the concentration of resorcinol was increased.
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