Hydroxyethyl cellulose(HEC) ke polymer e feto-fetohang e fumanang lits'ebetso tse fapaneng ho pholletsa le liindasteri tse fapaneng ka lebaka la thepa ea eona e ikhethang. E tsoa ho selulose, e 'ngoe ea li-polymers tsa tlhaho tse ngata ka ho fetisisa, HEC e fumane tlhokomelo e kholo bakeng sa ho qhibiliha ha metsi, tlhaho e seng ea ionic, le bokhoni ba ho etsa litharollo tsa viscoelastic. Tataiso ena e felletseng e hlahloba sebopeho, thepa, motsoako, lits'ebetso, le nts'etsopele e ka bang teng nakong e tlang ea hydroxyethylcellulose.

Sebopeho le litšobotsi tsa Hydroxyethylcellulose:

HEC ke motsoako oa selulose, polysaccharide e nang le linear e entsoeng ka likarolo tse pheta-phetoang tsa tsoekere tse kopantsoeng ke β (1 → 4) libond tsa glycosidic. Lihlopha tsa hydroxyl (-OH) haufi le mokokotlo oa selulose li fana ka libaka tsa phetoho ea lik'hemik'hale, tse lebisang ho thehoeng ha lihlahisoa tse sa tšoaneng tsa cellulose tse kang HEC. Tabeng ea HEC, lihlopha tsa hydroxyethyl (-CH2CH2OH) li kenngoa mokokotlong oa cellulose ka liketso tsa etherification.

The degree of substitution (DS), e bolelang palo e tloaelehileng ea lihlopha tsa hydroxyethyl ka unit ea anhydroglucose, e susumetsa thepa ea HEC. Litekanyetso tse phahameng tsa DS li etsa hore ho be le ho qhibiliha ho eketsehileng metsing le ho fokotsa tšekamelo ea ho etsa li-gel. Boima ba limolek'hule bo boetse bo phetha karolo ea bohlokoa ho khethollang thepa ea rheological ea HEC, 'me li-polymers tse phahameng tsa boima ba limolek'hule ka tloaelo li bonts'a katleho e kholoanyane.

HEC e bonts'a ho qhibiliha ha metsi ka mokhoa o makatsang, ho etsa hore e be molemo haholo mekhoeng ea metsi. Ha e qhibiliha ka metsing, HEC e etsa tharollo e hlakileng le e se nang 'mala ka boitšoaro ba pseudoplastic, ho bolelang hore viscosity e fokotseha ka sekhahla se ntseng se eketseha sa ho kuta. Boitšoaro bona ba rheological bo lakatseha lits'ebetsong tse ngata, kaha bo lumella ho sebelisoa habonolo le ho hasana ha lihlahisoa tse nang le HEC.

Motsoako oa Hydroxyethylcellulose:

Tlhahiso ea HEC e kenyelletsa karabelo ea cellulose e nang le ethylene oxide ka pel'a li-catalysts tsa alkali tlas'a maemo a laoloang. Ts'ebetso ena hangata e etsahala sebakeng se nang le metsi ka mocheso o phahameng, 'me tekanyo ea etherification e ka laoloa ka ho fetola mekhoa ea maikutlo e kang mocheso, nako ea ho itšoara, le karolelano ea cellulose ho ethylene oxide.

Kamora karabelo, sephetho sa hydroxyethylcellulose hangata se hloekisoa ho tlosa litšila le li-reagents tse sa sebetsaneng. Mekhoa ea ho hloekisa e ka kenyelletsa ho na pula, ho sefa, ho hlatsoa le ho omisa mehato ea ho fumana sehlahisoa sa ho qetela ka mokhoa o lakatsehang, joalo ka phofo kapa granules.

Lisebelisoa tsa Hydroxyethylcellulose:

1. Lihlahisoa tsa Tlhokomelo ea Botho: HEC e sebelisoa haholo indastering ea tlhokomelo ea botho bakeng sa thepa ea eona e teteaneng, e tsitsitseng le ea ho etsa lifilimi. E ka fumanoa lihlahisoa tse fapa-fapaneng, ho akarelletsa li-shampoo, li-conditioner, lihlapa tsa 'mele, litlolo, litlolo le li-gel. Lihlopheng tsena, HEC e ntlafatsa viscosity, e ntlafatsa sebopeho sa sehlahisoa, 'me e tsitsisa li-emulsions.
2. Meriana ea Meriana: Lefapheng la meriana, HEC e sebetsa e le mothusi oa bohlokoa ho li-formups tsa letlapa, moo e sebetsang e le moemeli ea tlamang, ea senyang kapa ea laoloang. Bokhoni ba eona ba ho etsa litharollo tse hlakileng, tse se nang 'mala bo etsa hore e tšoanelehe bakeng sa ho sebelisoa litharollong tsa molomo, ho emisoa le ho lokisa mahlo. Ho feta moo, HEC e sebelisoa mefuteng ea lihlooho tse kang mafura le li-gel bakeng sa thepa ea eona ea rheological le biocompatibility.
3. Indasteri ea Lijo: HEC e hiriloe indastering ea lijo e le setei, se tsitsisa, le se emulsifier lihlahisoa tse fapaneng, ho kenyeletsoa lisoso, lirosa, lihlahisoa tsa lebese le lino. E thusa ho ntlafatsa sebopeho, ho thibela syneresis, le ho matlafatsa molomo ha ho etsoa lijo. Ho lumellana ha HEC le mefuta e mengata e fapaneng ea metsoako ea lijo le bokhoni ba eona ba ho mamella maemo a ho sebetsa ho etsa hore e be khetho e ratoang ho baetsi ba lijo.
4. Lipente le Liaparo: HEC e sebelisoa ka lipente le liphahlo tse thehiloeng metsing ho laola rheology le ho ntlafatsa thepa ea kopo. E sebetsa joalo ka motenya, e thibela ho theoha le ho fana ka litšobotsi tse ntle tsa boemo. HEC e boetse e kenya letsoho ho tsitsang le sethaleng sa bophelo ba lipente tsa pente, ho netefatsa hore ho ajoa ka mokhoa o ts'oanang oa li-pigment le li-additives.
5. Lisebelisoa tsa Kaho: Lefapheng la kaho, HEC e sebelisoa mefuteng ea samente e kang likhomaretsi tsa lithaele, li-grouts le liretse. E sebetsa e le mofetoleli oa rheology, ho ntlafatsa ts'ebetso, ho hanyetsa le ho boloka metsi. Meetso e thehiloeng ho HEC e bonts'a matla a matla a tlamo le ho fokotseha ho fokolang, ho lebisang ho thepa ea kaho e tšoarellang le e khahlisang ka bokhabane.

Ntlafatso ea Kamoso le Litaelo tsa Lipatlisiso:

1. Mekhoa e tsoetseng pele: Boiteko bo tsoelang pele ba lipatlisiso bo reretsoe ho hlahisa mekhoa e mecha e kenyelletsang HEC bakeng sa ts'ebetso le ts'ebetso e ntlafetseng. Sena se kenyelletsa nts'etsopele ea li-hydrogel tse sebetsang ka bongata, mekhoa ea microencapsulation, le lisebelisoa tse arabelang molemong oa phepelo ea lithethefatsi tse lebisitsoeng le lits'ebetso tse laoloang tsa tokollo.
2. Likopo tsa Biomedical: Ka thahasello e ntseng e eketseha ea lisebelisoa tse lumellanang le lintho tse phelang le tse senyehang, ho na le monyetla oa hore HEC e fumane likopo likarolong tsa biomedical tse kang boenjiniere ba lisele, pholiso ea maqeba, le phano ea lithethefatsi. Lipatlisiso mabapi le li-hydrogel tse thehiloeng ho HEC bakeng sa tsosoloso ea lisele le li-scaffolds bakeng sa setso sa lisele li ntse li tsoela pele, ka liphello tse tšepisang.
3. Mekhoa e Mecha ea Tlhaho: Nts'etsopele ea mekhoa e tsitsitseng le e bonolo ea ho kopanya tikoloho bakeng sa HEC ke sebaka sa lipatlisiso tse mafolofolo. Melao-motheo ea k'hemistri e tala e ntse e sebelisoa ho fokotsa tšusumetso ea tikoloho ea tlhahiso ea HEC ka ho sebelisa li-feedstocks tse nchafalitsoeng, ho fokotsa tlhahiso ea litšila, le ho ntlafatsa maemo a karabelo.
4. Liphetoho tsa Ts'ebetso: Ho ntse ho hlahlojoa maano a ho lokisa thepa ea HEC ka liphetoho tsa lik'hemik'hale le ho kopanya lipolymers tse ling. Sena se kenyeletsa ho hlahisoa ha lihlopha tse sebetsang bakeng sa litšebelisano tse khethehileng, tse kang ho arabela pH, kutloisiso ea mocheso, le bioactivity, ho atolosa mefuta e mengata ea lisebelisoa.
5. Lisebelisoa tsa Nanotechnology: Ho kopanngoa ha HEC le li-nanomaterials le nanoparticles ho na le ts'episo ea nts'etsopele ea lisebelisoa tse tsoetseng pele tse nang le thepa e ncha. Li-nanocomposites tse thehiloeng ho HEC, li-nanogel le li-nanofibers li bontša monyetla oa ho sebelisoa ha ho tsamaisoa lithethefatsi, boenjiniere ba lisele, ho utloa le ho lokisoa ha tikoloho.

Qetello:

Hydroxyethyl cellulose(HEC) e hlahella e le polymer e feto-fetohang e nang le mefuta e mengata ea lits'ebetso ho liindasteri tse fapaneng. Motsoako oa eona o ikhethang oa ho qhibiliha ha metsi, thepa ea rheological, le biocompatibility e etsa hore e be motsoako oa bohlokoa lihlahisoa tsa tlhokomelo ea motho ka mong, meriana, lihlahisoa tsa lijo, lipente, liaparo le thepa ea kaho. Boiteko bo tsoelang pele ba lipatlisiso bo lebisitsoe ho atoloseng ts'ebeliso ea HEC ka nts'etsopele ea mekhoa e tsoetseng pele, mekhoa ea ho kopanya e tala, liphetoho tsa ts'ebetso, le ho kopanya le theknoloji e ntseng e tsoela pele. Ka hona, HEC e ntse e tsoela pele ho bapala karolo ea bohlokoa ho tsamaiseng boqapi le ho fihlela litlhoko tse ntseng li tsoela pele tsa liindasteri tse fapaneng 'marakeng oa lefatše.