Cellulose ether ke sehlopha sa li-polymers tse qhibilihang ka metsing tse tsoang ho selulose, e leng karolo ea mantlha ea sebopeho sa marako a lisele tsa semela. Cellulose ether e na le lintho tse ngata tse ikhethang, tse kenyelletsang ho boloka metsi a mangata, ho teteaneng, ho tlama le bokhoni ba ho etsa lifilimi. Lintho tsena li etsa hore cellulose ether e be motsoako oa bohlokoa lihlahisoa tse ngata tsa indasteri, tsa meriana le tsa tlhokomelo ea motho.

E 'ngoe ea likarolo tsa bohlokoa tsa cellulose ether ke viscosity ea eona, e bolelang ho hanyetsa ha mokelikeli ho phalla. Viscosity ke parameter ea bohlokoa e amang ts'ebetso le ts'ebeliso ea cellulose ether lihlahisoa tse fapaneng. Sehloohong sena, re tla tšohla viscosity ea cellulose ether, ho kenyelletsa le tekanyo ea eona, lintlha tse e amang, le ts'ebeliso ea eona liindastering tse fapaneng.

Tekanyo ea Viscosity ea Cellulose Ether

Viscosity ea cellulose ether hangata e lekanyetsoa ho sebelisoa viscometer, e leng sesebelisoa se lekanyang sekhahla sa phallo ea mokelikeli tlas'a tšusumetso ea matla a khoheli kapa matla a sebelisoang. Ho na le mefuta e mengata ea li-viscometers, tse kenyelletsang li-rotational, capillary, le oscillatory viscometers, e 'ngoe le e' ngoe e na le melemo le mefokolo ea eona.

Li-viscometers tse potolohang ke lisebelisoa tse sebelisoang haholo ho lekanya viscosity ea cellulose ether. Lisebelisoa tsena li lekanya torque e hlokahalang bakeng sa ho potoloha spindle kapa rotor e qoelisoang mokelikeli ka lebelo le sa khaotseng. Joale viscosity e baloa ho latela kamano pakeng tsa torque le lebelo la ho potoloha.

Ka lehlakoreng le leng, li-capillary viscometers li lekanya nako e hlokahalang bakeng sa hore molumo o tsitsitseng oa mokelikeli o phalle ka har'a tube e tšesaane ea capillary tlas'a tšusumetso ea matla a khoheli kapa khatello ea khatello. Joale viscosity e baloa ho latela molao oa Poiseuille, o amanang le sekhahla sa phallo ho viscosity, bophara ba tube, le sekhahla sa khatello.

Li-viscometers tsa oscillatory, tse lekanyang ho senyeha le ho hlaphoheloa ha mokelikeli tlas'a khatello ea sinusoidal shear, li sebelisetsoa ho lekanya viscosity e rarahaneng ea cellulose ether, e leng viscosity e itšetlehileng ka makhetlo a mangata.

Lintlha tse Amang Viscosity ea Cellulose Ether

The viscosity ea cellulose ether e susumetsoa ke lintlha tse 'maloa, ho kenyeletsa boima ba molek'hule, tekanyo ea ho fetola, mahloriso, mocheso le sekhahla sa ho kuta.

Boima ba limolek'hule: The viscosity ea cellulose ether e eketseha ka boima ba limolek'hule bo ntseng bo eketseha, kaha li-polymers tse phahameng tsa boima ba limolek'hule li na le liketane tse telele tse hohelanang, tse lebisang ho eketseha ho hanyetsa ho phalla.

Degree of substitution: The degree of substitution (DS) ea cellulose ether, e bolelang palo ea lihlopha tsa hydroxyl tse nketsoeng sebaka ka yuniti ea tsoekere ka ketane ea cellulose, le eona e ama ponahalo ea eona. Ha DS e ntse e eketseha, viscosity ea cellulose ether ea eketseha ka lebaka la ho eketseha ha ketane le likamano tsa limolek'hule.

Concentration: The viscosity ea cellulose ether e eketseha ka ho eketseha ha mahloriso, kaha likhakanyo tse phahameng li lebisa ho hoketseheng ha ketane le likamano tsa limolek'hule.

Mocheso: The viscosity ea cellulose ether e fokotseha ka mocheso o ntseng o eketseha, kaha mocheso o phahameng o lebisa ho eketseha ha motsamao oa limolek'hule le ho fokotsa likamano tsa li-intermolecular.

Sekhahla sa shear: The viscosity ea cellulose ether e boetse e itšetlehile ka tekanyo ea ho kuta e sebelisitsoeng, kaha litekanyetso tse phahameng tsa ho kuta li lebisa ho eketseha ha ketane le ho fokotsa ho hanyetsa ho phalla.

Tšebeliso ea Cellulose Ether Liindastering tse sa tšoaneng

Cellulose ether e sebelisoa haholo liindastering tse sa tšoaneng ka lebaka la thepa ea eona e ikhethang, ho akarelletsa le viscosity ea eona. Tse ling tsa lits'ebetso tsa bohlokoa tsa cellulose ether liindasteri tse fapaneng li tšohloa ka tlase.

Kaho: Cellulose ether e sebelisoa e le setei, se bolokang metsi, le se tlamang lihlahisoa tsa kaho tse kang samente, seretse le gypsum. E ntlafatsa ts'ebetso, botsitso, le ho khomarela lihlahisoa tsena, e leng se lebisang ts'ebetsong e ntlafetseng le ho tšoarella.

Meriana ea Meriana: Cellulose ether e sebelisoa e le motsoako oa metsoako ea meriana e kang matlapa, li-capsules le litlolo. E ntlafatsa ho phalla, ho hatella, le viscosity ea metsoako, e lebisang ho ntlafatso ea phano ea lithethefatsi le botsitso.