I-Cellulose Ether iyisigaba sezinto ze-polymer ezincibilikisiwe ezitholwe ukuguqulwa kwamakhemikhali kwe-cellulose yemvelo. Abakwa-Cellulose Bather ezijwayelekile bafaka i-methyl celtule Indlela enkulu njengomuntu omkhulu ibandakanya izakhiwo zomzimba nezamakhemikhali zokuxhumana phakathi kwesakhiwo se-molecular nesixazululo.
1. Ukwakheka kwamangqamuzana we-cellulose ether
Kwakhiwa i-cellulose ether ukwethula ukufakwa esikhundleni okuhlukile (njenge-methyl, ethyl, hydroxypropp, njll.) Kumakenakhi wemvelo weselula. Le nqubo igcina ukwakheka komugqa weselula kepha ishintsha i-solubity yayo nokuziphatha kwesisombululo. Ukwethulwa kokufakaza kufakazela kwenza izipho ze-cellulose ziba ne-soubelity enhle emanzini futhi zingakha uhlelo oluzinzile lwe-colloidal ngesisombululo, okubaluleke kakhulu ekusebenzeni kwalo okuqinile.
2. Ukuziphatha kwamangqamuzana kusixazululo
Umphumela wokuqina we-cellulose ether emanzini ikakhulukazi uqhamuka kwisakhiwo senethiwekhi ephezulu ye-viscosity eyakhiwe ngama-molecule awo ngesixazululo. Izindlela ezithile zifaka phakathi:
2.1 Ukuvuvukala nokwelula amaketanga amamolekyuli
Lapho i-cellulose ether ichithwa emanzini, amaketanga awo we-macromolecular azovuvukala ngenxa ye-hydration. Lawa maketanga ama-molelisar avuvukile azokwelula futhi athathe umqulu omkhulu, owandisa kakhulu ukubonwa kwesixazululo. Lokhu kunwebeka nokuvuvukala kuncike ohlotsheni kanye nezinga lokufaka esikhundleni sokufaka esikhundleni se-cellulose ether etre
2.2 Ama-hymolecular hydrogen bond kanye nokusebenzisana kwe-hydrophobic
Amaketanga ama-cellulose ether ama-molektal aqukethe inani elikhulu lamaqembu ama-hydroxyl namanye amaqembu e-hydrophilic, angakha ukusebenzisana okuqinile ngama-molecule amanzi ngama-hydrogen bond. Ngaphezu kwalokho, okufakwa esikhundleni kwe-cellulose err kuvame ukuba nezinga elithile le-hydrophobicity, futhi la maqembu e-hydrophobic angakha ama-aggregate we-hydrophobic emanzini, ngaleyo ndlela athuthukise ukubonwa kwesixazululo. Umphumela ohlanganisiwe wama-hydrogen bond kanye nokusebenzisana kwe-hydrophobic kuvumela isixazululo se-cellulose ether ukwakha umbuso ophakeme oqinile.
2.3 ENTANGEMENT NOBUCHWEPHESHE NOKUQHAWULA KAKHULU phakathi kwamaketanga amamolekyuli
Amaketanga e-cellulose ether ama-molecular azokwakha ukufakwa ngokomzimba kwikhambi ngenxa yokunyakaza okushisayo namabutho we-intermolecular, futhi lezi zinhlanganisela zikhulisa ukubonwa kwesixazululo. Ngaphezu kwalokho, ezindaweni ezigxile kakhulu, ama-molecule e-cellulose ether angakha isakhiwo esifana nokuxhumeka ngokomzimba, okuthi kwenziwe ngcono ukubonwa kwesixazululo.
3. Izindlela zokuqina ezisetshenzisweni ezithile
3.1 Izinto zokwakha
Ezintweni zokwakha, izimpi ze-cellulose zivame ukusetshenziswa njengabakhulu ezitsheni nasekugqokeni. Bangakhulisa ukusebenza kokwakha nokugcinwa kwamanzi kodaka, ngaleyo ndlela kuthuthukise ukulula ukwakhiwa kanye nekhwalithi yokugcina yezakhiwo. Umphumela wokuqina we-cellulose afers kulezi zinhlelo zokusebenza ikakhulukazi ekwakhekeni kwezixazululo eziphezulu, ezandisa anama-antision kanye nezakhiwo ezilwa nama-anti-sagging wezinto zokwakha.
3.2 imboni yokudla
Embonini yokudla, izimpi ze-cellulose ezifana ne-hydroxypropyllylylyl methylcellulose (HPMC) kanye ne-hydroxyethyl cellulose (Hec) zisetshenziswa njengabakhulu, abaqinisi kanye nama-emulsifiers. Izixazululo eziphakeme ezivelele abazithola ekudleni zingakhulisa ukunambitheka kanye nokuthungwa kokudla, ngenkathi kuqiniswa uhlelo oluhlakazekile ekudleni ukuvimbela ukuhlukaniswa kanye nezulu.
3.3 Medicine kanye Nezimonyo
Emkhakheni wezokwelapha kanye nezimonyo, izimpikiswano ze-cellulose zisetshenziswa njengama-gelling agents kanye nama-sikhulu wokulungiselela kwemikhiqizo efana nama-gels wezidakamizwa, ama-lotion kanye nokhilimu. Indlela yayo yokuqina incike ekuziphatheni kwayo kokuchithwa emanzini kanye nesakhiwo senethiwekhi ephezulu ye-viscosity yasungulwa, ukuhlinzeka ngokubonakala nokuqina okudingwa ngumkhiqizo.
I-4. Ithonya lezici zezemvelo emphumeleni wokuqina
Umphumela wokuqina we-cellulose ether uthintwa yizici ezahlukahlukene zezemvelo, kufaka phakathi izinga lokushisa, i-PH VAURE NOOONIC amandla esixazululo. Lezi zinto zingashintsha iziqu zokuvuvukala kanye nokuxhumana kwama-intermolecular kwe-cellulose ether molecular chain, ngaleyo ndlela kuthinte ukubonakala kwesixazululo. Isibonelo, izinga lokushisa eliphakeme livame ukunciphisa ukubonakala kwe-cellulose ether ether, ngenkathi ushintsho kunani le-PH lungashintsha isimo se-ionization se-chain molecular, ngaleyo ndlela kuthinte ukubonana.
Ukusetshenziswa okubanzi kwe-cellulose ether njengoba ubukhulu bubangelwa isakhiwo salo esiyingqayizivele se-molecular kanye nesakhiwo senethiwekhi ephezulu esezingeni eliphezulu esenziwe emanzini. Ngokuqonda indlela yayo yokuqina kuzicelo ezihlukile, umphumela wayo wohlelo lokusebenza ezinkambeni ezahlukahlukene zezimboni ungawenziwa kahle. Ngokuzayo, ngokutadisha okujulile kobudlelwano phakathi kwesakhiwo se-cellulose ether kanye nokusebenza, kulindeleke ukuthi imikhiqizo ye-cellulose ether esebenza kangcono izothuthukiswa ukuze ihlangabezane nezidingo zezinkambu ezahlukahlukene.
Isikhathi sePosi: Feb-17-2025