IHydrophobic Modified Hydroxyethyl celtulose (HEC) uhlobo lokutholwa oluguqulwa ngokwethula amaqembu ama-hydrophobic (anjenge-alkyl ende, amaqembu amnandi, njll.) Ku-Hydroxyethyl cellulose (i-HEC). Lolu hlobo lwezinto ezibonakalayo luhlanganisa izakhiwo ze-hydrophilic ze-hydroxyethyl cellulose nge-hydrophobic Properties yamaqembu e-hydrophobic futhi kusetshenziswa kabanzi kuzimbali, okokuhlanza, izimonyo kanye nezithwali zezidakamizwa.
1. Indlela ye-synthesis ye-hydropobically eguqulwe yi-hydroxyethyl cellulose
Ukuhlanganiswa kwe-Hydropobily Modified Hydroxyyethyl celtulose kuvame ukwenziwa ngezindlela ezilandelayo:
1.1 ukusabela kokuchazayo
Le ndlela ukuphendula i-hydroxyethyl cellulose nge-hydrophobic yamakhemikhali amakhemikhali (njengama-acid amathani anamafutha amade, ama-chloride amade, njll.) Ukwethula amaqembu e-hydrophobic e-cellulose reaction reaction. Ukusabela kokuqamba akukwazi ukwethula ngempumelelo amaqembu e-hydrophobic kuphela, kepha futhi alungise i-hydrophopobicity kanye nomphumela wokuqina wama-polymers. Izimo zokuphendula zenqubo yokuhlanganiswa, njengokushisa, isikhathi, ukusabela kwe-solvent kanye ne-catalyst, kuzothinta ukusebenza komkhiqizo wokugcina.
1.2 Ukusetha kabusha ukusabela
Ngale ndlela, iqembu le-hydroxyethyl cellulose lithathelwa indawo yiqembu le-hydrophobic (njenge-Alkyl, Phenyl, njll.). Inzuzo yale ndlela ukuthi izimo zokwenziwa zimnene, izici zesakhiwo ze-hydroxyethyl celtulese zingagcinwa kahle, futhi umkhiqizo oguquliwe uvame ukuba ne-solubity enhle kanye nomphumela wokuqina.
1.3 Ukusabela kweCopolemerization
Ngokopollymering namanye ama-monomers (njenge-acrylic acid, i-acrylate, njll.), I-polymer entsha ene-hydrophopobicity ingalungiswa. Le ndlela ingathola ukulawulwa okuqondile kokusebenza kokuqina kwe-cellulose ngokulungisa isilinganiso sama-monomers ahlukene.
1.4 Ukusabela kokuxhumana
Amakhompiyutha e-Hydrophobic afakwa ngamakhemikhali ekwakhiweni kweHydroxYethyl cellulose ukwakha amabhlokhi noma izingxenye. Le ndlela ingathuthukisa ukuqina okushisayo kanye nomsebenzi ongaphezulu we-hydroxyyethyl cellulose, efanelekile ngezidingo ezithile zokusebenza okuphezulu.
2. Indlela yokuqina ye-hydropobically modified hydroxyethyl cellulose
Indlela yokuqina ye-hydropobically disdofied hydroxyethyl celtulose ikakhulukazi iqukethe izici ezilandelayo:
2.1 Khulisa ukusebenzisana kwe-intermolecular
Ukwethulwa kwamaqembu e-Hydrophobic kuthuthukisa ukusebenzisana phakathi kwama-molecule we-cellulose, ikakhulukazi endaweni enamanzi, lapho amaqembu e-hydrophobic evame ukuhlanganisa ndawonye ukwenza ama-aggregate amamolebu amakhulu. Lokhu kuhlangana komzimba kuholela ekwandeni kokubonakala kwesixazululo, ngaleyo ndlela kubonise impahla eqinile yokuqina.
2.2 ukusebenzisana kwe-hydrophilic-hydrophobic
Amaqembu we-hydrophilic (anjenge-hydroxyethyl) namaqembu we-hydrophobic (afana ne-alkyl, perkyl, njll.) Ku-hydropobily lyroxytheryl celtuleose eguqulwe ndawonye ukwakha ukuxhumana okukhethekile kwe-hydrophilic-hydrophobic. EsiGabeni esinamanzi, ingxenye ye-hydrophilic ixhumana kakhulu ngama-molecule amanzi, kanti ingxenye ye-hydrophobic idonsela omunye ngomunye ngomphumela we-hydrophobic, futhi yandisa ubukhulu besakhiwo phakathi kwama-molecule futhi ngaleyo ndlela bandisa i-viscosity.
2.3 Ukwakha isakhiwo senethiwekhi yesisombululo
Ngemuva kokuguqulwa kwe-hydrophobic, ukwakheka kweketanga lamangqamuzana kungashintsha, kwakha isakhiwo senethiwekhi enezici ezintathu. Lesi sakhiwo senethiwekhi singathuthukisa kakhulu i-viscoeliasticity kanye nekhono elikhulayo lesisombululo ngokusebenzisa ukuxhumeka ngokomzimba phakathi kwama-molecule.
2.4 Kulula ukwakha isakhiwo esinjenge-gel
Ngenxa yokwethulwa kwamaqembu e-hydrophobic, i-hydropobily shintsha i-hydroxyethyl celtulose inezakhiwo ezinhle ze-gelation. Ngaphansi kwezimo ezifanele, ezinjengezinguquko zokushisa, i-PH noma ukugxila, amaqembu aguqulwe nge-hydrophobic angadala ukwakheka kwezakhiwo zejeli kwikhambi, okubuye kube yimpawu yokuqina kwayo.
3. Ukusetshenziswa kwe-hydrophobically eguqulwe yi-hydroxyethyl cellulose
I-Hydrophobic Modified Hydroxyyethyl celtulose isetshenziswa kabanzi ezinkambeni eziningi zezimboni, ikakhulukazi ezimweni lapho ukuqina, ukuthuthukiswa kwe-rhelogical kanye nokuthuthuka kokuqina kuyadingeka:
3.1 ukumbona nopende
Embonini yezembatho, i-hydrophobically Modefied hydroxyethyl celtule
3.2 ACLENERS KANYE NEZIMALI
Ukungeza i-hydropobilyylyl modified hydroxyethyl celtule
3.3 Izimonyo
Ensimini yezimonyo, i-hydrophobically Moshified hydroxyethyl celtulose ivame ukusetshenziswa njenge-omenter kanye nokumisa umhlinzeki, ikakhulukazi e-lotion, okhilimu kanye neminye imikhiqizo, engathuthukisa ukuthungwa nokuzizwa komkhiqizo.
3.4 Isithwali sezidakamizwa
Ngenxa yokuqina kwayo okuhle nokuqina, i-hydropobellically modified hydroxyethyl celtulese futhi ifundwe kabanzi ukuze isetshenziswe ezinhlelweni zokukhishwa kwezidakamizwa ezilawulwa, ezingalawula ngempumelelo isilinganiso sezidakamizwa.
Ngokwethula amaqembu ama-hydrophobic, ama-hydropobily aguqulwa i-hydroxyyethyl celtulose awona kuphela anikeze i-hydroxyethyl cellulose yokuqala yokuqina okunamandla, kepha futhi yenza kube khombisa ukusebenza okuhle kakhulu ezisetshenzisweni ezahlukahlukene. Indlela yayo yokuqina ixhomeke ekuxhumaneni phakathi kwamaqembu e-hydrophobic namaqembu we-hydrophilic, imiphumela yokuhlanganiswa kwamangqamuzana kanye nezinguquko ekwakhekeni kwesixazululo. Ngokujula kocwaningo, indlela yokuhlanganiswa kanye nenkundla yesicelo se-hydropobically hydroxyethyl celtulose izokwandiswa ngokwengeziwe, ngamathemba epulazi abanzi.
Isikhathi sePosi: Feb-15-2025