Lintlha tsa motheo tsa hydroxyethyl methylcellulose
Lebitso la Sechaena: Hydroxyethyl methylcellulose
Lebitso la Senyesemane: Hymetellose328
Li-alias tsa Sechaena: hydroxyethyl methyl cellulose;hydroxyethyl methyl cellulose;hydroxymethyl ethyl cellulose;2-hydroxyethyl methyl ether cellulose
Li-aliases tsa Senyesemane: Methylhydroxyethylcellulose;Cellulose;2-hydroxyethyl methyl ether;HEMC;Tyopur MH[1]
Khemistri: Hydroymethylmethylcellulose;Hydroxyethyl methylcellulose;Hydroxymethylethylcellulose.
Molek'hule: C2H6O2 xCH4O x PhEur 2002 e hlalosa hydroxyethyl methylcellulose e le karolo ea O-methylated, karolo e itseng ea O-hydroxymethylated cellulose.Litlhaloso tse fapaneng li hlahisoa ke boleng bo bonahalang ba viscosity ea 2% w / v tharollo ea metsi ka 20 ° C, 'me yuniti ke mPa s.
Boima ba molek'hule: PhEur 2002 e hlalosa hydroxyethyl methylcellulose e le karolo ea O-methylated, karolo e itseng ea O-hydroxymethylated cellulose.Litlhaloso tse fapaneng li hlahisoa ke boleng bo bonahalang ba viscosity ea 2% w / v tharollo ea metsi ka 20 ° C, 'me yuniti ke mPa s.
Litšobotsi tsa mantlha tsa hydroxyethyl methylcellulose (HEMC) ke:
1. Ho qhibiliha: Ho qhibiliha ka metsing le lihlapolli tse ling tsa tlhaho.HEMC e ka qhibiliha ka metsing a batang.Boemo ba eona bo phahameng ka ho fetisisa bo khethoa feela ke viscosity.Sollubility e fapana ho ea ka viscosity.The viscosity e ka tlaase, e kholoanyane ea ho qhibiliha.
2. Ho hanyetsa letsoai: Lihlahisoa tsa HEMC ke li-non-ionic cellulose ethers 'me ha li polyelectrolyte, kahoo li batla li tsitsitse ka tharollo ea metsi ha letsoai la tšepe kapa li-electrolyte tse phelang li le teng, empa ho phaella ho feteletseng ha electrolyte ho ka baka gelation le pula.
3. Mosebetsi oa holim'a metsi: Ka lebaka la ts'ebetso e sebetsang ea holim'a metsi a metsi, e ka sebelisoa e le moemeli oa tšireletso ea colloidal, emulsifier le dispersant.
4. Gel ea Thermal: Ha sehlahisoa sa HEMC se nang le metsi a metsi se futhumetse mocheso o itseng, se fetoha opaque, li-gel, le precipitates, empa ha se tsoela pele ho pholile, se khutlela sebakeng sa pele sa tharollo, 'me gel le pula e etsahala.Thempereichara haholo-holo e itšetlehile ka mafura a bona, lithuso tsa ho emisa, li-colloids tse sireletsang, li-emulsifiers, joalo-joalo.
5. Metabolic inertness le monko o fokolang le monko o monate: HEMC e sebelisoa haholo lijong le meriana hobane e ke ke ea sebelisoa 'me e na le monko o fokolang le monko o monate.
6. Ho hanyetsa hlobo: HEMC e na le khanyetso e ntle ea hlobo le botsitso bo botle ba viscosity nakong ea polokelo ea nako e telele.
7. Ho tsitsa ha PH: The viscosity ea tharollo ea metsi ea lihlahisoa tsa HEMC ha e amehe ka thata ke acid kapa alkali, 'me boleng ba pH bo batla bo tsitsitse ka har'a 3.0-11.0.
Kopo: Hydroxyethyl methylcellulose e ka sebelisoa e le moemeli oa tšireletso ea colloidal, emulsifier le dispersant ka lebaka la ts'ebetso ea eona e sebetsang ka holim'a metsi a metsi.Mohlala oa ts'ebeliso ea eona ke o latelang: tšusumetso ea hydroxyethyl methylcellulose ts'ebetsong ea samente.Hydroxyethyl methylcellulose ke phofo e tšoeu e sa nkheng, e sa latsoeheng, e se nang chefo e ka qhalloang metsing a batang ho etsa tharollo e hlakileng ea viscous.E na le litšoaneleho tsa ho teteana, ho tlama, ho qhalakanya, emulsifying, filimi-forming, suspending, adsorbing, gelling, surface active, ho boloka mongobo le ho sireletsa colloid.Kaha tharollo ea metsi e na le mosebetsi o sebetsang ka holim'a metsi, e ka sebelisoa e le moemeli oa tšireletso ea colloidal, emulsifier le dispersant.Hydroxyethyl methylcellulose aqueous solution e na le hydrophilicity e ntle mme ke sesebelisoa se sebetsang sa ho boloka metsi.
Nako ea poso: Nov-17-2022