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newsCia peb kawm txog Tween 80 (tseem hu ua Tween 80 lossis polysorbate 80) thiab Tween 20 (tseem hu ua Tween 20) hauv peb txoj kev sib txawv
1。 Qhov hluavtaws ntawm Tween 80 yog ua raws li cov polymerization ntawm desaturated sorbitol monooleate thiab ethylene oxide. Khoom cua ntawm Tween 20: sib xyaw ntawm polyethylene glycol thiab ib feem ntawm polyethylene glycol. Tween 80 yog ib hom ntawm polyol nonionic surfactant, uas feem ntau siv cov polysorbate. Nws yog dav siv hauv kua, ib nrab-khoom thiab npaj khoom, xws li O / W emulsifier, solubilizer, wetting tus neeg sawv cev, dispersant thiab stabilizer.
2. Tween 20 siv: rau qhov hws ntawm disc thiab ethylene oxide, vim tias nws cov lwg me me muaj ntau dua hydrophilic polyoxyethylene pawg, yog li nws muaj zog hydrophilicity, raws li cov tshuaj ntxuav tsis-ionic. Feem ntau siv ua O / W emulsifier, nws tuaj yeem siv tau ua ke nrog kaum ob alkyl sulfate lossis span hom emulsifier txhawm rau txhim kho kev ruaj khov ntawm emulsion. Nws kuj tseem siv tau los ua solubilizer rau qee yam tshuaj. Tus cwj pwm ntawm Tween 80: tus nqi peroxide ntawm Tween 80 tsis ntau tshaj 10, uas yog lub teeb daj rau cov kua txiv kab ntxwv ua kua; nws yog me ntsis tsw. Kev saj me ntsis iab, muaj qhov sov siab. Nws yog soluble hauv dej, ethanol, methanol lossis ethyl acetate, tab sis soluble hauv cov roj ntxhia.
Characteristics of Tween 20: Tween 20 is a yellow or amber transparent oily liquid, with a special smell and weak bitter taste. The relative density is 1.01, boiling point & gt; 100 ° C, flash point 321 ° C, refractive index 1.472, viscosity (25 ° C) 0.25 ー 0.40 passec.


Sijhawm Tshaj Tawm: Nov-11-2020