• Title/Summary/Keyword: Sorbitan

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Effects of hydration pretreatment on small molecule amphiphiles(SMA) at two levels in reduced-calorie cake systems (수화 전처리에 따른 양쪽성 저분자 유화제(Small Molecule Amphiphile)의 첨가 수준이 저 열량 케익 체계에 미치는 영향)

  • 김혜영;셋서케롤
    • Korean journal of food and cookery science
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    • v.10 no.1
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    • pp.8-12
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    • 1994
  • The effects of small molecule amphiphiles(SMA) at 1.5 and 15% levels were compared with or without heating to 65$^{\circ}C$ and cooling pretreatment in modified reduced-calorie cake systems. The SMA used were monoglycerides(MG), sorbitan monosterate(SMS), VanallR polysorbate 60(PS60), surose ester(SE) F10, F70, and F160, Low batter specific gravities with high cake voumes were noted with the high levels of treated SMS, MG, and SE F10 and F70 or cakes with treated low levels of SEF160, F70 and PS 60. Cake volumes with the treated low levels of SEF160, F70, and PS 60 were comparable to cake volumes when using an untreated high level of Vanall$\^$R/.

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Effect of Preparation Methods of a Matrix Retaining Electrolyte on the Characteristics of a Phosphoric Acid Fuel Cell (인산형 연료전지(PAFC)용 전해질 매트릭스의 제조방법이 전극/매트릭스 계면특성에 미치는 영향)

  • 윤기현;최재열;장재혁;김창수
    • Journal of the Korean Ceramic Society
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    • v.34 no.12
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    • pp.1205-1212
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    • 1997
  • The matrices which consisted of SiC whisker, PES(polyesterasulfone) as a binder, span 80(sorbitan monooleate) as a surfactant, TPP(triphenyl phosphate) as a plasticizer and dichloromethane as a solvent, have been prepared by the various methods such as tape casting, rolling, tape cast-coating and roll-coating method. The fuel cells of single stack type using these matrices are characterized by ac impedance spectroscopy and cyclic voltammetry technique. A fuel cell using a matrix prepared by the tape cast-coating method shows the best performance of 466.34 mA/$\textrm{cm}^2$ at 0.6V because it has the lowest polarization resistance at the interface between electrodes and a matrix due to the largest three phase contact region of gases, catalyst and electrolyte.

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Preparation of Poly(oxypropylene-oxyethylene glycol) Block Copolymers Oil Dispersant and Characteristics of W/O Emulsion to Weathering Crude Oils (Poly(oxypropylene-oxyethylene glycol) Block Copolymer계 유분산제의 제조와 Weathering Crude Oil에 대한 W/O 에멀젼 특성)

  • Kang, Doo-Whan
    • Journal of the Korean Applied Science and Technology
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    • v.20 no.3
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    • pp.204-211
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    • 2003
  • Poly(oxypropylene-oxyethylene glycol) block copolymer(PBC) oil dispersant, which has low toxicity, high biodegradability, and an excellent dispersion efficiency to crude oils and weathered W/O emulsion was prepared by blending PBC, poly(oxyethylene) oleate, and sorbitan monooleate. The dispersing efficiency was measured by swirling flask method. The PBC oil dispersant had an excellent dispersing efficiency to weathered oil products formed as stable W/O emulsion, and the low toxicity, such as 4000 ppm to Oryzias Latipes(24 hr, TLM), Brine Shrimp Artemia(24 hr, TLM).

Adhesive Properties of Emulsion PSA Polymerized Using Tween Series Nonionic Surfactants (Tween계 비이온 계면활성제를 이용하여 중합한 에멀션점착제의 접착물성)

  • Lim, Tae Kyun;Lee, Myung Cheon
    • Korean Chemical Engineering Research
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    • v.52 no.3
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    • pp.289-293
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    • 2014
  • In making emulsion type pressure sensitive adhesive (PSA), environmentally friendly Tween series nonionic surfactants were used to find out the possibility of substituting the traditional nonyl-phenyl nonionic surfactant (NP-40) by comparing their adhesive properties. Results exhibited that the PSA used Tween series nonionic surfactants showed much better adhesive properties in peel strength and holding power than that used NP-40.

The Effect of Additive on the Electric conductivity of Insulating Oil (절연유의 전기전도에 미치는 첨가제의 영향)

  • 정광현;김영봉;김용운;임헌찬;이덕출
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 1996.05a
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    • pp.158-161
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    • 1996
  • The static charges are generated by streaming electrification phenomena in insulating oil flowing by force for the purpose of cooling at the internal of Ultra-high power transformer. In this thesis, their elimination method was studied. In this paper the effect of Additive on the electric conductivity of Insulating oil is studied. The variation of electric conductivity disappear when Additive is molten in insulating oil BTA(Benzotriazole) appear more variation of electric conductivity than that of SP-S10(Sorbitan mono-stearate). But the variation is not enough to decrease streaming electrification of insulating oil($\sigma$>10$\^$-12/[S/cm]).

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Synthesis and Properties of Ahcovel Type Durable Softner for Cotton Fabrics (Ahcovel계 면직물용 내구성 유연제의 합성과 물성연구)

  • Hong, Eui-Suk;Jeon, Young-Je;Ko, Jae-Yong;Park, Hong-Soo
    • Journal of the Korean Applied Science and Technology
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    • v.12 no.2
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    • pp.75-83
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    • 1995
  • 1, 3-Di(2-dodecanoylaminoethyl)-2, 7-dioxy-1, 3, 6, 8-tetraazacyclodecane[DDTD] and sorbitan monostearate(SMS) were synthesized as a main component for softner. O/W type softner(DSA) was prepared by blending of DSA, SMS, polyoxyethylene(10) castor oil, glyceryl monooleate, and polyoxyethylene(7) stearyl ether. After treatment of DSA to all cotton fabrics, the physical properties such as tear strength, crease recovery, and flexing abrasion resistance were measured. As a result of the measurement, DSA was found to be durable softner with good softness.

계면활성제를 이용한 토양내 유기오염물 (NAPL) 정화 방법의 연구

  • 이민희
    • Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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    • 2000.11a
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    • pp.96-98
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    • 2000
  • Column experiments were peformed to evaluate the efficiency of surfactant flushing for remediation of non-aqueous phase liquid (NAPL) in the soil under controlled conditions. In column experiment less than 0.1 % of the original mass of tetrachloroethylene (PCE), remained in the column after 15 pore volumes of 1% sorbitan monooleate solution were passed through columns. To determine the influence of soil parameters that may affect the remediation process, column tests were repeated with different values of grain size, application rate, surfactant type, surfactant concentration, and solution viscosity (polymer mixed with surfactant). Experimental works suggest that surfactant flushing has a great potential to rapidly remove mass from NAPL in the soil.

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Preparation and Properties of Fatty Alkylate Type Durable Softner for Nylon Fiber (알킬지방산 에스테르계 나일론 섬유용 내구성 유연제의 제조와 물성)

  • Kim, Seung-Jin;Park, Hong-Soo;Kang, Doo-Whan
    • Journal of the Korean Applied Science and Technology
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    • v.12 no.1
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    • pp.87-92
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    • 1995
  • To prepare a O/W type durable softner(OESA), octadecamidoethylaminoethyl dodecate and tetra (2-dodecamidoethyl) urea synthesized as the main components of softner, were blended with polyoxyethylene(20) oleyl ether, sorbitan sesquioleate, and polyoxyethylene(7) stearyl ether in various compositions. Emulsion stability of OESA was good, and mixed HLB value was 9.7, OESA was found was to be good durable softner for nylon through the examination of softness, lubriation, antistatic property, bending resistance, and color fastness.

Microencapsulation of Anchovy Oil by Sodium Alginate (알긴산소다를 이용한 멸치어유의 미세캡슐화)

  • 임상빈;좌미경
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.28 no.4
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    • pp.890-894
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    • 1999
  • Microencapsulation of anchovy oil as a core material in sodium alginate as a wall material was inves tigated. Microencapsulation was accomplished by injecting an oil/water emulsion, consisting of a mixture of liquefied sodium alginate and emulsifier, under high pressure through an orifice submerged in a calcium lactate solution. Microcapsules suspended in a dispersion fluid were observed under a fluorescence mi croscope to verify the presence of the capsules and to note coalescence or degradation of the capsules. Optimum conditions for microencapsulation of anchovy oil were obtained when 1.0% aqueous solution of sodium alginate contained 3% of a 1:1 ratio of ESPR 25(polyglycerine+polylinoleate) and TW 20(sorbitan laurate+ethylene oxide) as an emulsifier in terms of capsule size and size distribution, and emulsion stability. The airless sprayer produced microcapsules with a diameter between 15.9 and 73.9 m with different concentration of a wall material. The optimum mixing ratio of wall material to core material was 90:10(wt/wt). 0.2% calcium lactate was appropriate as a dispersion fluid.

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Preparation and Characteristics of Ahcovel Type Nonionic Durable Softner (Ahcovel계 비이온성 내구유연제의 제조와 유연특성 연구)

  • Shin, Jae-Hyun;Kim, Sung-Gea;Park, Hong-Soo
    • Journal of the Korean Applied Science and Technology
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    • v.15 no.1
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    • pp.17-23
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    • 1998
  • To prepare a O/W type nonionic durable softner(ANSA), synthesized 1, 3-dihexadanoyl-2, 7-dioxy-6, 8-di(2-hexadecanoyloxyethyl)-1, 3, 6, 8-tetraazacyclodecane as the main component of softner, was blended with beef tallow, anhydrous lanolin, polyoxyethylene(20) oleyl ether, sorbitan sesquioleate, and polyoxyethylene(7) stearyl ether in various compositions. Emulsion stability of ANSA was good, and the mixed HLB value was 9.8. After the treatment of ANSA to all cotton fabrics, the physical properties such as tear strength, crease recovery, and flexing abrasion resistance were measured, respectively. As a result of the measurement, ANSA was proved to be durable softner with good softness.