Ho etsoa ha gel ea hydroxyethyl cellulose

Hydroxyethyl cellulose (HEC) ke polima e qhibilihang ka metsing e se nang ionic e sebelisoang haholo liindastering tse fapaneng ka lebaka la thepa ea eona e teteaneng, e tlamang le ho tsitsisa.Haholo-holo, HEC e atisa ho sebelisoa ha ho etsoa li-gel, e leng lisebelisoa tse tiileng kapa tse tiileng tse nang le jelly-like consistency 'me li khona ho tšoara metsi a mangata.Sehloohong sena, re tla hlahloba ho etsoa ha gel ea hydroxyethyl cellulose le lintlha tse ka amang thepa ea eona.

Ho etsoa ha gel ea hydroxyethyl cellulose ho kenyelletsa likarolo tse 'maloa tsa bohlokoa, ho kenyeletsa HEC, solvent, le li-additives tse ling ha ho hlokahala.Mokelikeli o mong o tloaelehileng o sebelisoang ho HEC gel formulations ke metsi, ao hangata a sebelisetsoang ho qhaqha HEC polymer le ho etsa gel.Leha ho le joalo, lihlahisoa tse ling tse kang glycerin, propylene glycol le ethanol le tsona li ka sebelisoa ho fetola thepa ea gel.

Ho phaella ho solvent, li-additives tse fapa-fapaneng li ka kenyelletsoa mofuteng oa gel ea hydroxyethyl cellulose ho fetola thepa ea eona.Ka mohlala, li-preservatives li ka 'na tsa eketsoa ho thibela kholo ea baktheria le ho lelefatsa bophelo ba sethala sa gel, ha li-surfactants li ka sebelisoa ho thusa emulsify gel le ho ntlafatsa ts'ebetso ea eona.Li-additives tse ling tse tloaelehileng li kenyelletsa li-humectants, tse thusang ho boloka mongobo ka har'a gel, le litlolo tsa mebala kapa monko o monate ho ntlafatsa ponahalo le monko oa eona.

Ntho e 'ngoe ea bohlokoa e lokelang ho nahanoa ha ho etsoa gel ea hydroxyethyl cellulose ke viscosity e lakatsehang kapa botenya ba sehlahisoa sa ho qetela.The viscosity ea gel e khethoa ke mahloriso a HEC polymer, hammoho le karo-karolelano ea solvent ho polymer.Maemo a phahameng a HEC le likarolo tse tlase tsa solvent-to-polymer li tla fella ka gel e teteaneng, e nang le viscous.Khetho ea solvent e ka boela ea ama viscosity ea gel, ka li-solvents tse itseng tse hlahisang li-gel tse nang le ts'ebetso e tsitsitseng kapa e fokolang.

Ntho e 'ngoe e lokelang ho nahanoa ha ho etsoa gel ea hydroxyethyl cellulose ke ho hlaka kapa ho se bone ha gel.Li-gel tsa HEC li ka tloha ho tloha ho hlakileng le ho hlaka ho ea ho opaque le milky, ho itšetlehile ka ho hlophisoa le ho eketsoa ha likarolo tse ling.Tšebeliso ea li-solvents tse itseng kapa li-additives li ka ama ponahalo ea gel, 'me limaraka tse itseng tsa HEC li ka' na tsa e-ba le ho feta kapa tse fokolang ho itšetlehile ka boima ba limolek'hule le tekanyo ea ho kenya sebaka.

Taba e 'ngoe e ka bang teng ha ho etsoa li-gel tsa hydroxyethyl cellulose ke botsitso ba tsona ka nako.Maemong a mang, li-gels tsa HEC li ka 'na tsa tloaelana le syneresis, e leng ho arohana ha metsi ho tloha gel ka lebaka la liphetoho tsa mocheso kapa lintlha tse ling.E le ho rarolla bothata bona, li-stabilizers le li-thickeners tse kang xanthan gum kapa carrageenan li ka kenyelletsoa ho etsoa ho ntlafatsa botsitso ba gel le ho thibela syneresis.

Qetellong, ho etsoa ha gel ea hydroxyethyl cellulose ho kenyelletsa ho leka-lekana ka hloko ha likarolo le lintlha tse fapaneng, ho kenyelletsa le khetho ea solvent, mahloriso a HEC polymer, le ho eketsoa ha li-additives tse fapaneng ho lokisa thepa ea gel.Ka ho laola mefuta ena ka hloko, hoa khoneha ho etsa gel ea hydroxyethyl cellulose e nang le viscosity e lakatsehang, e hlakileng le e tsitsitseng, e ka sebelisoang mefuteng e mengata ea likopo, ho tloha lihlahisoa tsa tlhokomelo ea botho ho ea ho liaparo tsa indasteri le li-adhesives.