tala fou

newsSei o tatou aʻoaʻoina e uiga i le va o le va o le va o le 80 (e taʻua foi o le vavalalata 80 poʻo le polysorbate 80) ma le vavalalata 20 (e taʻua foi o le va o le va o le 20) i ni auala eseese se tolu.
1。 O le faʻavasegaina o le vavalalata 80 e faʻavae i luga o le polymerization o desaturated sorbitol monooleate ma le ethylene oxide. Faʻatasiga o le va o le 20: palu o le polyethylene glycol ma le vaega o le polyethylene glycol. T sela 80 o se ituaiga o polyol nonionic surfactant, lea e masani ona faʻaaogaina polysorbate. E lautele faʻaaogaina i suavai, semi-mautu ma mautu sauniuniga, pei o le O / W emulsifier, solubilizer, wetting agents, dispersant ma stabilizer.
2. Vaʻaiga 20 e faʻaaoga ai: mo le faʻamalosiina o le disc ma le ethylene oxide, aua o ona molelaʻele e tele atu vaega o le hydrofilic polyoxyethylene, o lea e malosi ai le hydrophilicity, o se vailaʻau e le o le ionic. Masani faʻaaogaina o O / W emulsifier, e mafai ona faʻaaogaina faʻatasi ma le sefululua alkyl sulfate poʻo le span type emulsifier e faʻaleleia ai le faʻamautuina o le emulsion. E mafai foi ona faʻaaogaina o le solubilizer mo nisi vailaʻau. Uiga o le va o le 80: o le peroxide aoga o le va o le 80 e le sili atu i le 10, o le malamalama samasama i moli moli viscous; e fai sina manogi. E tofo malie i le tofo, e iai le lagona mafanafana. E soluble i le vai, ethanol, methanol poʻo le ethyl acetate, ae mafai ona faʻamama i le suauʻu minerale.
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.


Taimi Post: Nov-11-2020