Mafi mahimmancin dukiyar cellulose ether bayani shine kayan rheological. Abubuwan rheological na musamman na yawancin ethers cellulose sun sa su yi amfani da su sosai a fannoni daban-daban, kuma nazarin kaddarorin rheological yana da amfani ga haɓaka sabbin filayen aikace-aikacen ko haɓaka wasu filayen aikace-aikacen. Li Jing na Jami'ar Shanghai Jiao Tong ya gudanar da bincike mai tsauri kan kaddarorin rheological naCarboxymethylcellulose (CMC), ciki har da tasirin ma'auni na tsarin kwayoyin CMC (nauyin kwayoyin halitta da digiri na maye gurbin), pH maida hankali, da ƙarfin ionic. Sakamakon binciken ya nuna cewa dankon sifili na maganin yana ƙaruwa tare da karuwar nauyin kwayoyin halitta da matakin maye gurbin. Ƙara yawan nauyin kwayoyin halitta yana nufin haɓakar sarkar kwayoyin halitta, kuma sauƙi mai sauƙi tsakanin kwayoyin halitta yana ƙara danko na maganin; babban mataki na maye gurbin yana sa kwayoyin su kara shimfiɗa a cikin bayani. Jihar ta wanzu, ƙarfin hydrodynamic yana da girma, kuma danko ya zama babba. Dankowar CMC mai ruwa mai ruwa yana ƙaruwa tare da haɓakar haɓakawa, wanda ke da danko. Dankowar maganin yana raguwa tare da ƙimar pH, kuma lokacin da ya yi ƙasa da wani ƙima, ɗanɗanon yana ƙaruwa kaɗan, kuma a ƙarshe an kafa acid ɗin kyauta kuma ya haɗe. CMC shine polymer polyanionic, lokacin da aka ƙara gishiri monovalent ions Na+, garkuwar K+, danko zai ragu daidai da haka. Ƙarin divalent cation Caz+ yana haifar da dankon maganin ya ragu da farko sannan ya karu. Lokacin da ƙaddamarwar Ca2 + ya fi girma fiye da ma'anar stoichiometric, ƙwayoyin CMC suna hulɗa tare da Ca2 +, kuma babban tsari yana wanzu a cikin mafita. Liang Yaqin, Jami'ar Arewacin kasar Sin, da dai sauransu, sun yi amfani da hanyar viscometer da na'urar jujjuyawar viscometer don gudanar da bincike na musamman kan kaddarorin rheological na dilute da tattara abubuwan da aka gyara na hydroxyethyl cellulose (CHEC). Sakamakon binciken ya gano cewa: (1) Cationic hydroxyethyl cellulose yana da dabi'un danko na polyelectrolyte a cikin ruwa mai tsabta, kuma raguwar danko yana ƙaruwa tare da karuwa mai yawa. Matsakaicin danko na cationic hydroxyethyl cellulose tare da babban matsayi na canji ya fi na cationic hydroxyethyl cellulose tare da ƙananan digiri na maye gurbin. (2) Maganin cationic hydroxyethyl cellulose yana nuna halayen ruwan da ba Newtonian ba kuma yana da sifofi na bakin ciki: yayin da yawan taro na bayani ya karu, bayyanar danko yana ƙaruwa; a cikin wani taro na maganin gishiri, CHEC na fili danko Yana raguwa tare da haɓakar ƙarar gishiri. Ƙarƙashin ƙimar shear iri ɗaya, bayyanar danko na CHEC a cikin tsarin mafita na CaCl2 yana da girma fiye da na CHEC a cikin tsarin mafita na NaCl.
Tare da ci gaba da zurfafa bincike da ci gaba da fadada filayen aikace-aikacen, kaddarorin hanyoyin magance tsarin gauraye da ke tattare da ethers na cellulose daban-daban sun kuma sami kulawar mutane. Alal misali, ana amfani da sodium carboxymethyl cellulose (NACMC) da hydroxyethyl cellulose (HEC) a matsayin man fetur na man fetur a cikin man fetur, wanda ke da fa'idodin juriya mai ƙarfi, wadataccen albarkatun ƙasa da ƙarancin gurɓataccen muhalli, amma tasirin amfani da su kaɗai bai dace ba. Kodayake na farko yana da danko mai kyau, yana da sauƙin tasiri ta wurin zafin jiki da salinity; ko da yake na karshen yana da kyakkyawan zafin jiki da juriya na gishiri, ƙarfinsa na kauri ba shi da kyau kuma sashi yana da girma. Masu binciken sun haɗu da mafita guda biyu kuma sun gano cewa danko na maganin haɗin gwiwar ya zama mafi girma, an inganta yanayin zafi da juriya na gishiri zuwa wani matsayi, kuma an inganta tasirin aikace-aikacen. Verica Sovilj et al. sun yi nazarin halayen rheological na maganin tsarin gauraye wanda ya hada da HPMC da NACMC da anionic surfactant tare da viscometer na juyawa. Halin rheological na tsarin ya dogara da HPMC-NACMC, HPMC-SDS da NACMC- (HPMC- SDS) tasiri daban-daban sun faru tsakanin.
Abubuwan rheological na maganin ether cellulose kuma suna shafar abubuwa daban-daban, kamar ƙari, ƙarfin injin waje da zafin jiki. Tomoaki Hino et al. yayi nazarin tasirin ƙari na nicotine akan abubuwan rheological na hydroxypropyl methylcellulose. A 25C da maida hankali ƙasa da 3%, HPMC ya nuna halin ruwa na Newtonian. Lokacin da aka ƙara nicotine, danko ya karu, wanda ya nuna cewa nicotine yana ƙara haɓakar ƙwayar cuta.HPMCkwayoyin halitta. Nicotine a nan yana nuna tasirin gishiri wanda ke ɗaga wurin gel da hazo na HPMC. Ƙarfin injina kamar ƙarfi mai ƙarfi kuma zai sami takamaiman tasiri akan kaddarorin maganin ruwa na ether cellulose. Yin amfani da turbidimeter na rheological da ƙananan kayan aikin watsawa na haske, an gano cewa a cikin bayani mai zurfi, ƙara yawan ƙwayar ƙwayar cuta, saboda haɗuwa da ƙwayar cuta, canjin canjin yanayin hazo zai karu.
Lokacin aikawa: Afrilu-28-2024