Hydroxypropyl Methylcelcelculose (hpmc, hpmc, hpmcroxypropyl methylcelcelse) yi-Polymer Complet esetyenziswe ngokubanzi ngezinto zokwakha, amayeza, ukutya kunye namanye amasimi. Itsalele ingqalelo kakhulu ngenxa yepropathi yakhe eyahlukileyo. Ukugcinwa kwamanzi kuchaphazela intsebenzo yemveliso kunye nefuthe lokufaka isicelo, ngoko ke kubalulekile ukuhlalutya ngokuchanekileyo ukusebenza kwe-HPMC.
I-1. Ubume kunye nobunzima bemolekyuli
1.1 Ubume bemichiza
I-HPMC yi-polymer eguqulwe nguMethylcelculose (MC) yenxalenye kunye ne-hydroxypropy (hp) yenxalenye. Ibhalansi yamaqela e-hydrophilic (enjengee-hydroxyl kunye namaqela e-fydsxy) kunye namaqela e-hydrophobic (njengamaqela e-propoxy) kwindawo yayo yemolekyuli ibeka iipropathi zawo zokugcina amanzi. I-HPMC eneziganga ezahlukeneyo zokufaka endaweni yoko iya kuba neyantlukwano ebonakalayo kumanzi awo alondoloziweyo ngenxa yenani elahlukileyo kunye nokusasazwa kwamaqela e-hydrophilic. Inqanaba eliphezulu le-Hydroxyproplopy ngokubanzi inyusa ukusebenza kwe-HPMC.
1.2 Ubunzima beMolekyuli
Ubunzima bemolekyuli yenye into ephambili echaphazela intsebenzo ye-HPMC. Ngokubanzi, i-HPMC ye-hipmcular yemolekyuli enamandla yenethiwekhi kwisisombululo ngenxa ye-molecular yayo yemolekyuli, enokuthi igcinwe kwaye igcine ubumnene ngakumbi. Nangona kunjalo, ubunzima obuphakamileyo bunokukhokelela kuzomeleza kakubi, okungahambelaniyo kwizicelo ezisebenzayo.
I-2. Ukungabilili
Ukunyibilisela i-HPMC emanzini kuchaphazela ngqo ukusebenza kwayo. I-HPMC ibonisa ukubenzela isilwanyana esibandayo, senza isisombululo esibonakalayo okanye esincinci se-turbid turbid. Ukuluka kwayo kuchatshazelwa bubushushu, i-PH kunye noxinzelelo lwe-electrolyte.
Iqondo lokushisa: I-HPMC inesimo sezulu esihle kumaqondo obushushu asezantsi, kodwa ukuhlelwa kunokwenzeka kubushushu obuphezulu, ukunciphisa umsebenzi wokugcinwa kwamanzi.
Ixabiso le-pH: i-HPMC inomhlaba ophakamileyo ophantsi kwemeko engathathi hlangothi okanye ebuthathaka iAlkaline. Phantsi kweemeko ze-abidic kakhulu okanye iimeko ze-alkaline, ukugcwala kwayo kunye nokugcinwa kwamanzi kunokuchaphazeleka.
Ugxininiso lwe-electrolyte: Uxinzelelo lwe-electrolyte luya kuba buthathaka ukusebenza kwe-HPMC kuba i-electrolyte inokusebenzisana namaqela e-HPMC kwimolekyuli ye-HPMC, echaphazela amandla ayo okubopha amanzi.
3. Isisombululo kwi-velosity
Isisombululo Viscosity sisibonisi esibalulekileyo ukulinganisa intsebenzo yokugcina amanzi kwi-HPMC. Uhlobo lwesisombululo se-HPMC ikakhulu luzimisele ngobunzima bemolekyuli kunye noxinzelelo. Izisombululo ze-HPMC eziphezulu ze-HPMC zinokwenza inethiwekhi engazinzileyo yokusebenza kwaye zinceda ukomeleza amanzi. Nangona kunjalo, i-viscofity iphezulu kakhulu inokubangela ubunzima ekuqhubekisweni nasekusetyenzisweni, ngoko ke ibhalansi kufuneka ifumaneke phakathi kokugcinwa kwamanzi kunye nokusebenza.
4. Isiphumo sezongezo
Ii-thi chulers: ezinje nge-selsulose Derivetives kunye neGuar Gum, inokuphucula ukugcinwa kwamanzi kwi-HPMC ngokuphucula ubume benethiwekhi.
Iiplasitifers: ezinje nge-glycerol kunye ne-glylone glycol, inokonyusa ukuguquguquka kunye nokuguquguquka kwezisombululo ze-HPMC kwaye inceda ukuphucula iipropathi zokugcina amanzi.
I-Arder-Contment Arder-Liarment Arder: Engathi yi-birate, ephucula amandla olwakhiwo lwesisombululo se-HPMC ngokudibanisa umnqamlezo kwaye iphucule umthamo wayo wokugcina amanzi.
I-5. Inkqubo yokulungiselela
Indlela yeSisombululo: i-HPMC ichithwe emanzini kwaye ilungiselelwe ngokufudumeza, i-Evevaporation, eyomisayo kunye nezinye iindlela. Umsebenzi wokugcinwa kwamanzi wemveliso yesiphumo unxulumene ngokusondeleyo nolawulo lobushushu kunye nohlengahlengiso lonxibelelwano ngexesha lenkqubo yokuphelisa.
Indlela eyomileyo: kubandakanya indlela yokudibanisa imigubo yomgubo, inyibilikise indlela yokuphucula, njl. Njl. Njl. Iziphumo zayo zokugcina amanzi zichaphazeleka ngezinto ezinje ngamaqondo obulungisa kunye nexesha lokuxuba.
I-6. Iimeko zendalo
Iimeko zendalo esingqongileyo ze-HPMC ngexesha lokufaka isicelo, njengamaqondo obushushu, umswakama, njl njl.
Iqondo lokushisa: Kwindawo ezinobushushu obuphezulu, i-HPMC inokudana okanye ijeli, inciphisa umthamo wokugcina amanzi.
Umphunga: Kwimeko enomswaka-daidity ephezulu, i-HPMC inokufumana umswakama kunye nokomeleza ukusebenza kwendawo yokugcina amanzi, kodwa ukufuma kakhulu umswakalo kunokubangela ukwanda okugqithisileyo okanye ukwenziwa kwemveliso.
Ukukhanya kwe-Ultraviolet: Ukuvezwa kwexesha elide kwi-Ultraviot kunokubangela i-HPMC ukuba inciphise kwaye inciphise iipropathi zawo zokugcina amanzi.
7. Iindawo zesicelo
Amasimi ahlukeneyo okwenza isicelo sineemfuno ezahlukeneyo zokusebenza kwamanzi kwi-HPMC. Kwicandelo lezinto zokwakha, i-HPMC isetyenziswa njenge-arhente yokugcina amanzi ngenxa yokufaka amanzi, kunye nokusebenza kwamanzi okugcina amanzi kuchaphazela ukusebenza nokunganyangwa kodaka. Kwintsimi yamayeza, i-HPMC ihlala isetyenziswa njengezinto zokuhamba ngetafile, kwaye iipropathi zayo zokugcina amanzi zichaphazela isantya sokuchitheka nokukhulula iimpawu zeetafile. Kwintsimi yokutya, i-HPMC isetyenziswa njenge-thi cheki kwaye i-stabilizer, kwaye iipropathi zayo zokugcina amanzi zichaphazela incasa kunye nokuthungwa kwemveliso.
8. Iindlela zovavanyo
IMilinganiselo yokuGqibela amanzi
Imilinganiselo yokulahleka kwamanzi amanzi elahlekileyo: Vavanya umphumo wokugcinwa kwamanzi we-HPMC ngokulinganisa ilahleko yawo yokulahleka kwamanzi phantsi kweemeko ezithile zobushushu kunye neemeko zokufuma.
Ukuzimisela okubambekayo kwamanzi: Ukusebenza kwamanzi kwe-HPMC kuvavanywa ngokuhlalutya amandla ayo okubamba amanzi phantsi kweemeko ezahlukeneyo zeshera.
Umsebenzi wokugcinwa kwamanzi we-HPMC umiselwe zizinto ezahlukeneyo ezinjengemichiza, ubunzima bemolekyuli, ukulungisa, ukulungiselela ukulungiselela, iimeko zokulungiselela, iimeko zokusingqongileyo kunye neendawo zokufunda. Kwizicelo ezisebenzayo, ezi zinto kufuneka zithathwe ngokuqondakalayo ukuze zizokwandisa ifomula kunye nenkqubo ye-HPMC yokufezekisa eyona nto ilungileyo. Ngoyilo olululo lwefomula kunye nolawulo lwenkqubo, intsebenzo yokugcina amanzi i-HPMC inokusetyenziswa ngokupheleleyo kwaye umgangatho kunye nokusebenza kwemveliso kunokuphuculwa.
IXESHA LOKUQALA: NgoFebruwari-17-2025