HLB Values and the use for those surfactants

 

Di kelas tadi bu dosen kasih pertanyaan, pada HLB berapa surfaktan berfungsi sebagai antifoaming agent dan sebutkan contoh antifoaming agent tersebut. Iseng-iseng search ketemu lah ini :D, semoga bermanfaat.    HLB Values and the use for those surfactants HLB VALUE USE EXAMPLE 1 Antifoaming Agent Oleic Acid 2 Antifoaming Agent Sorbitan Tristearate 3 Antifoaming Agent Glyceryl Monostearate 4 Emulsifying Agent W/O Sorbitan mono-oleate (Span 80) 5 Emulsifying Agent W/O Glyceryl Monostearate 6 Emulsifying Agent W/O Diethylene glycol monolaurate 7 Emulsifying Agent W/O; Wetting ans Spreading Agents {none} 8 Emulsifying Agent W/O; Wetting and Spreading Agents Sorbitan monolaurate (Span 20) 9 Emulsifying Agent O/W; Wetting and Spreading Agents Polyethylene lauryl ether(Brij 30) 10 Emulsifying Agents O/W Methyl Cellulose(Methocel15 cps) 11 Emulsifying Agents O/W Polyoxyethylene monostearate (Myrj 45) 12 Emulsifying Agents O/W Triethanolamine oleate 13 Emulsifying Agents O/W ; Detergents Polyethylene glycol 400 monolaurate 14 Emulsifying Agents O/W ; Detergents (none) 15 Emulsifying Agents O/W ; Detergents Polyoxyethylene sorbitan mono-oleate(Tween 80) 16 Emulsifying Agent O/W ; Detergents: Solubilizing Agents Polyoxyethylene sorbitan monolaurate (Tween 20) 17 Solubilizing Agents Polyoxylene lauryl ether(Brij 35) 18 Solubilizing Agents Sodium oleate 19 Solubilizing Agents None 20 Solubilizing Agents Potassium oleate 40 Everything Sodium Lauryl Sulfate (Tide) Sumber : http://iransurfactant.tripod.com/id15.html Surfaktan bekerja sebagai antifoaming agent pada HLB 1-3, contohnya asam oleat, sorbitan tristearat, dan griseril monostearat. Semakin kecil HLB, semakin bersifat lipofil suatu surfaktan tersebut.