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Polyoxyethylene monooleate 및 oleylether 계 유분산제의 제조와 Bunker B 유의 분산효율에 미치는 영향
염규설,강두환 ( guy seol Yeom,doo whan Kang ) 한국유화학회 1995 한국응용과학기술학회지 Vol.12 No.1
Oil dispersants using polyoxyethylene monooleate, polyoxyethylene oleylether, and poly(oxypropylene-oxyethylene)glycol block copolymer were prepared and oil dispersant efficiency was measured using vertical shaking flask method to 4 kinds of Bunker B oil with different physical properties by appling the prepared dispersants. Although the dispersant efficiency was differed according to the differences of physical properties of Bunker B oil, the dispersant prepared using polyoxyethylene oleylether was the most effective to disperse the oil into water. The impurities like surfur contained in sample oil have to be removed by filteration to obtain the correct degree of absorption using UV spectrophtometer.
혼합 용매계 저독성 농축형 유분산제의 제조와 광유에 대한 분산효율 특성
염규설,강두환,김원기 ( Kuy Seol Yeom,Doo Whan Kang,Won Ki Kim ) 한국유화학회 1997 한국응용과학기술학회지 Vol.14 No.3
Low toxic concentrated oil dispersant using n-Paraffin and Di(ethylene glycol)mono butylether mixed solvent was prepared, and tested by oil dispersant performance test method, and oil dispersant efficiency was measured using vertical shaking method to 3 kinds of Crude oil, Bunker oil and W/O emulsions with different physical properties by appling the prepared dispersant. Although toxicity test was performed with Flat fish and Rock fish by appling the mixed oils emulsified using prepared oil dispersant, couldn`t find the toxicity to them. Concentrated oil dispersant prepared has a good dispersion efficiency of 97.2% after 0.5min settling time and 28.3% after 10min settling time to Bunker B oil with 10% water solution. Especially, the concentrated oil dispersant showing the low toxicity to Oryzias Latipes(24hr, TLm) was 54,000ppm and to Brine Shrimp Artemia(24hr, TLm) was 51,000ppm, and also, it was completely biodegradated to 99.1% after 7~8days.
강두환,염규설 한국섬유공학회 1989 한국섬유공학회지 Vol.26 No.6
Photosensitive properties of poly(dimethyl-co-methylphenylsilylene) copolymer(PDMPS) was investigated by the residual film method of measuring the change of solubility of PDMPS before and after exposure to light. The samples coated on quartz plates were exposed to light under various conditions and steeped in the same solvent as used for coating, and then the yield of residual film(W/W0) was measured. The yield of residual film was affected by the molecular weight of PDMPS copolymer, types of photosensitizer, and their concentration. The most effective photosensitizer for PDMPS copolymer among those used here was rosebengal. And also, the photocrosslinking mechanism of PDMPS copolymer was studied by infrared an d UV absorption spectra. The stability of PDMPS spinning fiber by exposing to light was investigated by the change of the solubility of spun fiber after exposing to light was investigated by the change of the solubility of spun fiber after exposing to light.