Indlela yokuqina yei-hydroxyethyl celluloseukukhulisa i-viscosity ngokwakhiwa kwe-intermolecular kanye ne-intramolecular hydrogen bond, kanye ne-hydration kanye neketanga entanglement yamaketanga amangqamuzana. Ngakho-ke, indlela yokuqina ye-hydroxyethyl cellulose ingahlukaniswa ibe yizici ezimbili: enye indima ye-intermolecular and intramolecular hydrogen bond. Iketango eliyinhloko le-hydrophobic lihlotshaniswa nama-molecule amanzi azungezile ngamabhondi e-hydrogen, athuthukisa uketshezi lwe-polymer ngokwayo. Umthamo wezinhlayiya unciphisa isikhala sokuhamba mahhala kwezinhlayiya, ngaleyo ndlela ukwandisa i-viscosity yesistimu; okwesibili, ngokusebenzisa ukugoqa kanye nokugqagqana kwamaketanga amangqamuzana, amaketanga e-cellulose asesimweni senethiwekhi esinezinhlangothi ezintathu kulo lonke uhlelo, ngaleyo ndlela athuthukise i-viscosity.
Ake sibheke ukuthi i-cellulose idlala kanjani indima ekuzinzeni kwesitoreji sesistimu: okokuqala, indima yezibopho ze-hydrogen ivimbela ukugeleza kwamanzi amahhala, idlala indima ekugcinweni kwamanzi, futhi ifaka isandla ekuvimbeleni ukuhlukaniswa kwamanzi; okwesibili, ukusebenzisana kwamaketanga e-cellulose I-lap entanglement yakha inethiwekhi ehlangene noma indawo ehlukene phakathi kwama-pigments, ama-fillers kanye nezinhlayiya ze-emulsion, ezivimbela ukuxazulula.
Kuyinhlanganisela yezindlela ezimbili ezingenhla zokwenza ezivumelayoi-hydroxyethyl celluloseukuba nekhono elihle kakhulu lokuthuthukisa ukuzinza kwesitoreji. Ekukhiqizeni upende we-latex, i-HEC yengezwe ngesikhathi sokushaywa nokuhlakazeka iyanda ngokunyuka kwamandla angaphandle, i-shear velocity gradient iyanda, ama-molecule ahlelwe ngendlela ehlelekile ehambisana nesiqondiso sokugeleza, futhi uhlelo lokugubha i-lap phakathi kwamaketanga wamangqamuzana luyabhujiswa, okulula ukuSlayida komunye nomunye, i-viscosity yesistimu iyancipha. Njengoba uhlelo luqukethe inani elikhulu lezinye izingxenye (ama-pigments, fillers, emulsions), lolu hlelo oluhlelekile alukwazi ukubuyisela isimo esibophekile sokuxhumanisa nokudlulana ngisho noma sibekwe isikhathi eside ngemva kokuhlanganiswa kopende. Kulokhu, i-HEC incike kuphela kumabhondi e-hydrogen. Umphumela wokugcinwa kwamanzi nokuqina kunciphisa ukusebenza kahle kokuqina kweI-HEC, kanye nomnikelo walesi simo sokuhlakazeka ekuzinzeni kwesitoreji sesistimu nakho kwehliswa ngokufanele. Kodwa-ke, i-HEC ehlakazekile yahlakazwa ngokufanayo ohlelweni ngesivinini esiphansi esishukumisayo ngesikhathi sokwehlisa, futhi isakhiwo senethiwekhi esakhiwe ukuxhumanisa kwamaketanga e-HEC salimala kancane. Ngakho-ke kubonisa ukusebenza kahle kokuqina okuphezulu kanye nokuzinza kwesitoreji. Ngokusobala, ukusebenza ngesikhathi esisodwa kwezindlela ezimbili zokujiya kuyisisekelo sokuqiniswa okuphumelelayo kwe-cellulose nokuqinisekisa ukuzinza kwesitoreji. Ngamanye amazwi, isimo esincibilikisiwe nesihlakazekile se-cellulose emanzini sizothinta kakhulu umphumela wawo wokujiya kanye negalelo lawo ekuzinzeni kwesitoreji.
Isikhathi sokuthumela: Apr-25-2024