Mekelikeli ea ho hlatsoa lijana ke lisebelisoa tsa bohlokoa tsa ho hloekisa malapeng, tse ratoang ka bokhoni ba tsona ba ho fokotsa mafura le litšila. Karolo e 'ngoe ea bohlokoa ea sebopeho sa tsona ke viscosity, e susumetsang katleho ea tsona ea ho khomarela bokaholimo le ho ntlafatsa ts'ebetso ea ho hloekisa. Hydroxypropyl Methylcellulose (HPMC), polymer e sebetsang ka mokhoa o fapaneng, e fumane tlhokomelo bakeng sa bokhoni ba eona ba ho ba setei sa ho tenya lits'ebetsong tse fapaneng, ho kenyeletsoa le lino tse hlatsoang lijana.
1.Selelekela:
Mekelikeli ea ho hlatsoa lijana e sebetsa e le lisebelisoa tsa bohlokoa tsa ho hloekisa ka tlung, tse thusang ho tlosoa ha masala a manganga a lijo le mafura lijana le lijana tse phehang. Katleho ea lihlahisoa tsena e susumetsoa ke lintlha tse fapaneng, ho kenyelletsa le surfactant concentration, pH, mme haholo-holo, viscosity. Viscosity e bapala karolo ea bohlokoa ho netefatsa tšireletso e nepahetseng, ho khomarela bokaholimo, le ho fanyeha ha mobu bakeng sa tlhoekiso e nepahetseng.
Hydroxypropyl Methylcellulose (HPMC), e seng ea ionic cellulose ether, e hlahile e le sesebelisoa se ts'episang se tiisang ho hlatsuoa ha mokelikeli ka lebaka la thepa ea eona e ikhethang ea rheological, biodegradability, le ho lumellana le li-surfactants. Sengoliloeng sena se hlahloba karolo ea HPMC ho tebiseng metsi a ho hlatsoa lijana, ho shebana le mekhoa ea eona, melemo, le litlamorao tsa ts'ebetso ea sehlahisoa le khotsofalo ea bareki.
2.Mechanisms of Thickening:
HPMC e tefisa metsi a ho hlatsoa lijana ka mekhoa e mengata:
Hydration le ho Ruruha: Ha e hasane ka metsing, HPMC e fumana metsi le ho ruruha, ho etsa sebopeho sa marang-rang a mararo. Marang-rang ana a kenya limolek'hule tsa metsi, 'me a eketsa ponahalo ea tharollo.
Thibelo ea Steric: Sebopeho sa hydrophilic sa limolek'hule tsa HPMC se li nolofalletsa ho sebelisana le limolek'hule tsa metsi, ho baka tšitiso ea steric le ho fokotsa ho tsamaea ha limolek'hule tsa solvent ka har'a tharollo, kahoo li eketsa viscosity.
Tšebelisano le Ketane: Limolek'hule tsa HPMC li ka ts'oarana 'me tsa sebelisana ka hydrogen bonding, ho etsa sebopeho se kang sa mesh se sitisang ho phalla ha metsi, ho lebisang ho eketseha ha viscosity.
Shear-Thinning Behaviour: Ha HPMC e ntse e tiisa tharollo nakong ea phomolo, e bonts'a boitšoaro ba ho kuta ka tlas'a tšusumetso ea khatello ea ho kuta e sebelisitsoeng. Thepa ena e lumella ho ajoa le ho hasana habonolo nakong ea kopo, ho ntlafatsa boiphihlelo ba mosebelisi.
3.Ho lumellana le Liqapi tsa Metsi a Hlatsoang Lijana:
HPMC e fana ka melemo e 'maloa e e etsang hore e tsamaisane le metsoako ea mokelikeli oa ho hlatsoa lijana:
Ho lumellana le Li-surfactants: HPMC e sebelisana le mefuta e mengata e fapaneng ea li-surfactants tse sebelisoang hangata ho hlatsoetsa lijana, ho kenyeletsoa li-anionic, non-ionic, le amphoteric surfactants. Ho lumellana hona ho tiisa botsitso le ho tšoana ho sehlahisoa sa ho qetela.
pH Stability: HPMC e tsitsitse ho feta mefuta e mengata ea pH, e etsa hore e tšoanelehe ho sebelisoa mefuteng ea ho hlatsoa lijana e nang le asiti le alkaline. E boloka thepa ea eona e teteaneng ntle le ho senyeha ho hoholo kapa ho lahleheloa ke viscosity.
Botsitso ba Mocheso: HPMC e bonts'a botsitso bo botle ba mocheso, e boloka thepa ea eona e teteaneng ka mocheso o phahameng o kopaneng nakong ea ts'ebetso ea tlhahiso le polokelo.
Mamello ea Letsoai: HPMC e bonts'a mamello ho li-electrolyte le matsoai a teng mekhoeng ea mokelikeli oa ho hlatsoa lijana, ho netefatsa ts'ebetso e tsitsitseng ea ho teteana leha ho na le li-additives kapa metsi a thata.
4.Kameho ho Ts'ebetso ea Sehlahisoa:
Ho kenyelletsoa ha HPMC mekhoeng ea ho hlatsoa lijana ho ka ba le litlamorao tse 'maloa tse ntle ts'ebetsong ea sehlahisoa:
Viscosity e Ntlafetseng le Botsitso: HPMC e tiisa tharollo ka katleho, e fana ka ho khomarela ho ntlafetseng holimo, ho emisa mobu ho molemo, le ho fokotsa metsi nakong ea kopo. Sena se matlafatsa ts'ebetso ea ho hloekisa ea mokelikeli oa ho hlatsoa lijana.
Tlhokahalo e Fokotseng ea Dosing: Ka ho eketsa viscosity, HPMC e lumella tlhoekiso e sebetsang maemong a tlase a li-surfactants, ka tsela eo e fokotsa litšenyehelo tse akaretsang tsa tlhahiso le phello ea tikoloho.
Boiphihlelo bo Ntlafetseng ba Mosebelisi: Boitšoaro ba ho kuta ba HPMC bo netefatsa ho fana ka mokhoa o bonolo le tšebeliso e bonolo ea mokelikeli oa ho hlatsoa lijana, o ntlafatsa boiphihlelo ba mosebelisi le boiketlo.
Nako e Telele ea ho Kopana: The viscosity e eketsehileng ea tharollo e lelefatsa nako ea ho kopana pakeng tsa sesepa le libaka tse silafetseng, e leng se lumellang ho tlosoa ha mobu ka katleho, haholo-holo tabeng ea masala a thata, a besitsoeng.
Taolo ea Rheological: HPMC e fana ka taolo ea rheological, e lumellang baetsi ba lihlahisoa ho hlophisa viscosity le thepa ea phallo ea mokelikeli o hlatsoang lijana ho fihlela litlhoko tse ikhethileng tsa ts'ebeliso le likhetho tsa bareki.
5. Maikutlo a Bareki:
Le ha HPMC e fana ka melemo e fapaneng ea ho tefisa lino tse hlatsoang lijana, ho na le lintlha tse ling bakeng sa bareki:
Biodegradability: HPMC e nkuoa e le ntho e ka senyehang le tikolohong. Bareki ba amehileng ka phello ea tikoloho ea lihlahisoa tsa ho hloekisa ba ka khetha metsoako e nang le HPMC.
Kutloelo-bohloko ea Letlalo: Batho ba bang ba ka 'na ba e-ba le letlalo le sa utloeng litsebeng kapa ba hanana le metsoako e itseng e teng linong tse hlatsoang lijana. Baetsi ba metsoako ba lokela ho etsa bonnete ba hore metsoako e nang le HPMC e lekoa dermatologically 'me e loketse letlalo le sa utloeng bohloko.
Ho Tlosa Masala: Le ha HPMC e ntlafatsa ho fanyeha ha mobu, ho netefatsa hore o hlatsuoa hantle, bareki ba bang ba ka bona filimi e setseng kapa ho khomarela haeba sehlahisoa se sa hlatsuoa hantle. Lisebelisoa li lokela ho ntlafatsa litlolo ho fokotsa masalla ntle le ho senya ts'ebetso ea ho hloekisa.
Lemohuoa la Ts'ebetso: Maikutlo a bareki mabapi le ts'ebetso ea ho hloekisa ha a na taba ebile a susumetsoa ke lintlha tse joalo ka monko o monate, boemo ba foam, le lintlha tse bonoang. Baqapi ba lokela ho etsa liteko tsa bareki ho netefatsa hore litlolo tse nang le HPMC li fihlela litebello tsa ts'ebetso le ho fana ka boiphihlelo bo khotsofatsang ba ho hloekisa.
Hydroxypropyl Methylcellulose (HPMC) e fana ka monyetla o moholo oa ho ba motenya oa ho hlatsuoa ha metsi, ho fana ka viscosity e ntlafalitsoeng, botsitso le ts'ebetso ea ho hloekisa. Ho lumellana ha eona le li-surfactants, botsitso ba pH, le botsoalle ba tikoloho li etsa hore e be motsoako o lakatsehang bakeng sa baetsi ba lihlahisoa ba batlang ho ntlafatsa metsoako ea mokelikeli oa ho hlatsoa lijana. Ka ho utloisisa mekhoa ea ho tenya, menahano ea tumellano, le likhetho tsa bareki, bahlahisi ba ka sebelisa melemo ea HPMC ho nts'etsapele lihlahisoa tsa metsi tse hlatsuoang lijana tse khotsofatsang litlhoko tse ntseng li tsoela pele tsa bareki.
Nako ea poso: Apr-03-2024