Ka sebele Ethylcellulose ke sekhomaretsi se sebelisoang haholo liindastering tse sa tšoaneng, haholo-holo meriana, lijo, litlolo le litlolo.
Kenyelletso ea ethyl cellulose
Ethylcellulose e tsoa ho cellulose, polymer ea tlhaho e fumanehang maboteng a lisele tsa semela.E hlahisoa ke karabelo ea ethylation ea selulose ka ethyl chloride kapa ethylene oxide.Phetoho ena e fana ka thepa e ikhethang, e etsa hore e tšoanelehe bakeng sa likopo tse fapaneng, haholo-holo e le sekhomaretsi liindastering tse fapaneng.
Litšobotsi tsa ethylcellulose
Sebopeho sa Lik'hemik'hale: Ethylcellulose e na le likarolo tse pheta-phetoang tsa anhydroglucose tse kopantsoeng ke β (1 → 4) glycosidic bonds.Ethylation ea cellulose e nka sebaka sa lihlopha tse ling tsa hydroxyl (-OH) ka lihlopha tsa ethoxy (-OCH2CH3).
Sollubility: Ethylcellulose ha e qhibilihe ka metsing, empa e qhibiliha ka har'a metsoako ea tlhaho e kang ethanol, acetone, toluene le chloroform.Thepa ena e etsa hore e loketse lits'ebetso tse hlokang ho hanyetsa metsi.
Bokhoni ba ho etsa lifilimi: Ethyl cellulose e ka etsa filimi e tenyetsehang le e bonaletsang ka mor'a hore e qhibilihe ka har'a motsoako o loketseng oa tlhaho.Lifilimi tsena li na le matla a matle a mochini le thepa ea thibelo.
Thermoplasticity: Ethylcellulose e bonts'a boits'oaro ba thermoplastic, e etsa hore ho be bonolo ho e sebetsa ka mekhoa e joalo ka extrusion, molding ea ente, le compression molding.
Ho lumellana: Ethylcellulose e lumellana le mefuta e sa tšoaneng ea li-polymers, li-plasticizers le li-additives, e leng se etsang hore e loketse ho sebelisoa ka mefuta e sa tšoaneng ea lihlahisoa.
Tšebeliso ea ethyl cellulose e le sekhomaretsi
1. Indasteri ea meriana
Meetsong ea meriana, ethylcellulose e sebetsa e le tlamahano ha ho etsoa letlapa.E thusa ho kopanya motsoako o sebetsang oa meriana (API) le li-excipients hammoho, ho netefatsa botšepehi ba letlapa le ho tšoana.Ntle le moo, ethylcellulose e boetse e sebelisoa mefuteng e laoloang ea tokollo e hlokang tokollo e tsitsitseng ea lithethefatsi.
2. Indasteri ea lijo
Ethylcellulose e sebelisoa e le se tlamang, se teteaneng le se tsitsitseng lijong.E sebelisoa ka ho roala litholoana, meroho le confectionery ho ntlafatsa ponahalo ea bona le bophelo ba sethala.Ho roala ha ethylcellulose ho fana ka tšireletso khahlanong le mongobo, likhase le litšila.
3. Liaparo le li-inks
Indastering ea ho roala le enke, ethylcellulose e sebelisoa e le tlamahano ea lipente, li-varnish, li-varnish le libopeho tsa enke ea khatiso.E fana ka liphahlo tsena ho khomarela, ho feto-fetoha ha maemo le ho hanyetsa metsi, ka hona ho ntlafatsa ts'ebetso ea bona le ho tšoarella.
4. Litlolo
Ethylcellulose e sebelisoa e le setenya le se tsitsitseng ho litlolo tse kang litlolo, litlolo le lihlahisoa tsa tlhokomelo ea moriri.E thusa ho fihlela sebopeho se lakatsehang, ho tsitsana le viscosity ho litlolo tsa litlolo.
5. Lisebelisoa tsa indasteri
Lits'ebetsong tsa indasteri, ethylcellulose e sebelisoa e le tlamahano ha ho etsoa thepa ea ceramic, abrasives le composite.E thusa ho theha 'mele e tala le ho laola thepa ea rheological ea li-pastes le slurries.
Synthesis ea ethylcellulose
Tšimoloho ea ethylcellulose e kenyelletsa karabelo ea selulose le moemeli oa ethylating tlas'a maemo a laoloang.Karabelo ea ethylation e atisa ho etsoa ka ho ba teng ha catalyst e kang acid kapa setsi sa ho khothalletsa ho nkeloa sebaka ha lihlopha tsa hydroxyl ka lihlopha tsa ethoxy.The degree of substitution (DS) e emela palo e tloaelehileng ea lihlopha tsa ethoxy ho yuniti ea tsoekere ka har'a ketane ea polymer 'me e ka laoloa ka ho lokisa liparamente tsa karabelo joalo ka nako ea karabelo, mocheso, le karolelano ea molar ea li-reactants.
Melemo ea ethylcellulose e le tlamahano
Ho feto-fetoha ha maemo: Ethylcellulose e bonts'a ho feto-fetoha ha maemo mabapi le ho qhibiliha, ho lumellana le bokhoni ba ho etsa lifilimi, ho etsa hore e tšoanelehe bakeng sa mefuta e mengata ea likopo ho pholletsa le liindasteri.
Ho hanyetsa Metsi: Ethylcellulose ha e qhibilihe ka metsing, e leng se etsang hore e be khetho e babatsehang bakeng sa metsoako e hlokang ho thibela metsi, joalo ka lipente, lipente le meriana e laoloang.
Thermoplasticity: Boitšoaro ba thermoplastic ea ethylcellulose bo lumella ho sebetsa habonolo ho sebelisoa mekhoa e tloaelehileng ea thermoplastic, e lumellang lits'ebetso tsa tlhahiso tse baballang chelete e ngata.
Biocompatibility: Ethylcellulose ka kakaretso e amoheloa e le e bolokehileng (GRAS) ke mekhatlo e laolang hore e sebelisoe lijong le lits'ebetsong tsa meriana, ho netefatsa hore e lumellana le biocompatibility le polokeho ea bareki.
Tokollo e laoloang: Ethylcellulose e sebelisoa haholo indastering ea meriana ho etsa mefuta ea litekanyetso tse laoloang ho fana ka taolo e nepahetseng ea sekhahla sa tokollo ea lithethefatsi.
Ethylcellulose e sebetsa e le setlamo sa mesebetsi e mengata e nang le mefuta e fapaneng ea likopo tsa meriana, lijo, liaparo, litlolo le masimo a indasteri.Thepa ea eona e ikhethang, ho kenyelletsa le ho qhibiliha, bokhoni ba ho etsa lifilimi le ho lumellana, e etsa hore e be motsoako oa bohlokoa mefuteng e fapaneng ea libopeho.Tšimoloho ea ethylcellulose e finyelloa ka selulose ea ethylating tlas'a maemo a laoloang, e leng se etsang hore ho be le lisebelisoa tse nang le thepa e hlophisitsoeng e loketseng likopo tse khethehileng.Ka ho hanyetsa metsi, thermoplasticity le tokollo e laoloang, ethylcellulose e ntse e tsoela pele ho phetha karolo ea bohlokoa ho ntlafatsa ts'ebetso le ts'ebetso ea lihlahisoa ho pholletsa le mefuta e mengata ea liindasteri.
Nako ea poso: Feb-18-2024