iroyin

newsJẹ ki a kọ ẹkọ nipa Tween 80 (eyiti a tun mọ ni Tween 80 tabi polysorbate 80) ati Tween 20 (eyiti a tun mọ ni Tween 20) ni awọn ọna oriṣiriṣi mẹta
1。 Awọn akopọ ti Tween 80 da lori polymerization ti sorbitol monooleate ti a fi silẹ ati ohun elo afẹfẹ ethylene. Isopọ ti Tween 20: adalu polyethylene glycol ati apakan ti polyethylene glycol. Laarin 80 jẹ iru ohun ti polyol nonionic surfactant, eyiti o jẹ polysorbate ti a nlo nigbagbogbo. O ti lo ni lilo pupọ ninu omi, ologbele-ri to ati awọn ipalemo to lagbara, gẹgẹ bi emulsifier O / W, solubilizer, oluranlowo wetting, pipinka ati imuduro.
2. Laarin awọn lilo 20: fun iyọ ti disiki ati ohun elo afẹfẹ ethylene, nitori awọn molulu rẹ ni awọn ẹgbẹ polyoxyethylene hydrophilic diẹ sii, nitorinaa o ni hydrophilicity ti o lagbara, bi ohun elo ti kii ṣe ionic. Ti a lo ni igbagbogbo bi emulsifier O / W, o le ṣee lo ni apapo pẹlu imi-ọjọ alkyl mejila tabi iru emulsifier iru lati mu iduroṣinṣin ti emulsion dara. O tun le ṣee lo bi solubilizer fun diẹ ninu awọn oogun. Iwa ti Tween 80: iye peroxide ti Tween 80 ko ju 10 lọ, eyiti o jẹ awọ ofeefee si omi viscous osan; o jẹ ellyrun diẹ. Ohun itọwo kikoro diẹ, rilara gbigbona wa. O jẹ tiotuka ninu omi, ẹmu, kẹmika tabi ethyl acetate, ṣugbọn tiotuka ninu epo alumọni.
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.


Akoko ifiweranṣẹ: Oṣu kọkanla-11-2020