I-Hydroxypropyl methylcellulose (HPMC)yi-polymer esetyenziswa kakhulu emanzini, esetyenziswa kakhulu kumayeza, ekutyeni, kwizinto zokwakha, kwizinto zokuthambisa nakwezinye iindawo. I-HPMC ineempawu zokunyibilika ezilungileyo kunye ne-viscosity kwaye inokwenza isisombululo se-colloidal esizinzileyo, ngoko ke idlala indima ebalulekileyo kwiindawo ezininzi. Ukuze isebenze ngokupheleleyo i-HPMC, indlela echanekileyo yokunyibilika ibaluleke kakhulu.
1. Indlela yokunyibilikisa amanzi kubushushu obuqhelekileyo
I-HPMC inokunyibilikiswa emanzini abandayo, kodwa ngokuqhelekileyo kufuneka izakhono ezithile ukuze kuthintelwe ukuhlangana kwayo. Ukuze kuphuculwe isiphumo sokunyibilika, la manyathelo alandelayo angasetyenziswa:
Inyathelo 1: Yongeza i-HPMC emanzini
Kubushushu begumbi, qala ngokufafaza i-HPMC ngokulinganayo phezu kwamanzi ukuze ungagaleli inani elikhulu le-HPMC emanzini ngaxeshanye. Ngenxa yokuba i-HPMC yi-polymer compound, ukongeza ngokuthe ngqo inani elikhulu le-HPMC kuya kuyibangela ukuba ifunxe amanzi kwaye idumbe ngokukhawuleza emanzini ukuze yenze into efana nejeli.
Inyathelo lesi-2: Ukuxuba
Emva kokongeza i-HPMC, qhubeka uxuba ngokulinganayo. Ngenxa yokuba i-HPMC inamaqhekeza amancinci, iya kuvuvuka emva kokufunxa amanzi ukuze yenze into efana nejeli. Ukuxuba kunceda ukuthintela i-HPMC ukuba ingadibani ibe ngamaqhekeza.
Inyathelo lesi-3: Yima uze ushukumise ngakumbi
Ukuba i-HPMC ayinyibiliki ngokupheleleyo, isisombululo singashiywa sime okwethutyana size siqhubeke sixuba. Ngokwesiqhelo siya kunyibilika ngokupheleleyo kwiiyure ezimbalwa.
Le ndlela ifanelekile kwiimeko apho kungadingeki ukufudumeza, kodwa kuthatha ixesha elide ukuqinisekisa ukuba i-HPMC iyanyibilika ngokupheleleyo.
2. Indlela yokunyibilikisa amanzi ashushu
I-HPMC inyibilika ngokukhawuleza emanzini afudumeleyo, ngoko ke ukufudumeza ubushushu bamanzi kunokukhawulezisa kakhulu inkqubo yokunyibilika. Ubushushu bamanzi okufudumeza obusetyenziswa rhoqo yi-50-70℃, kodwa ubushushu obuphezulu kakhulu (obufana nobo bungaphezulu kwe-80℃) bunokubangela ukuba i-HPMC yehle, ngoko ke ubushushu kufuneka bulawulwe.
Inyathelo 1: Ukufudumeza amanzi
Fudumeza amanzi ukuya kuthi ga kwi-50℃ uze uwagcine engatshintshi.
Inyathelo lesi-2: Yongeza i-HPMC
Fafaza i-HPMC kancinci emanzini ashushu. Ngenxa yobushushu obuphezulu bamanzi, i-HPMC iya kunyibilika lula, nto leyo enciphisa ukuhlangana kwamanzi.
Inyathelo lesi-3: Ukuxuba
Emva kokongeza i-HPMC, qhubeka uvuselela isisombululo samanzi. Ukudibanisa ukufudumeza kunye nokuxuba kunokukhuthaza ukunyibilika ngokukhawuleza kwe-HPMC.
Inyathelo lesi-4: Gcina ubushushu kwaye uqhubeke uvuselela
Ungagcina ubushushu obuthile kwaye uqhubeke uvuselela ide i-HPMC ichitheke ngokupheleleyo.
3. Indlela yokunyibilikisa utywala
I-HPMC inokunyibilika kungekuphela nje emanzini, kodwa nakwezinye izinyibilikisi zotywala (ezifana ne-ethanol). Inzuzo ephambili yendlela yokunyibilikisa utywala kukuba inokuphucula ukunyibilika kunye nokusasazeka kwe-HPMC, ingakumbi kwiinkqubo ezinamanzi amaninzi.
Inyathelo 1: Khetha isinyibilikisi esifanelekileyo sotywala
Izinyibilikisi zotywala ezifana ne-ethanol kunye ne-isopropanol zihlala zisetyenziselwa ukunyibilikisa i-HPMC. Ngokubanzi, isisombululo se-ethanol esingu-70-90% sinefuthe elingcono ekunyibilikiseni i-HPMC.
Inyathelo lesi-2: Ukuchithwa
Fafaza i-HPMC kancinci kancinci kwisinyibilikisi sotywala, uxube ngelixa wongeza ukuqinisekisa ukuba i-HPMC isasazeke ngokupheleleyo.
Inyathelo lesi-3: Ukuma nokushukumisa
Inkqubo yokunyibilikisa isinyibilikisi sotywala i-HPMC ikhawuleza kakhulu, kwaye idla ngokuthatha imizuzu embalwa ukufezekisa ukunyibilika ngokupheleleyo.
Indlela yokunyibilikisa utywala idla ngokusetyenziswa kwiimeko zokusetyenziswa ezifuna ukunyibilikisa ngokukhawuleza kunye nomthamo wamanzi ophantsi.
4. Indlela yokunyibilikisa exutyiweyo yesinyibilikisi namanzi
Ngamanye amaxesha i-HPMC inyibilika kumxube wenxalenye ethile yamanzi kunye nesinyibilikisi. Le ndlela ifanelekile ngakumbi kwiimeko apho i-viscosity yesisombululo okanye izinga lokunyibilika kufuneka lilungiswe. Izinyibilikisi eziqhelekileyo ziquka i-acetone, i-ethanol, njl.njl.
Inyathelo 1: Lungisa isisombululo
Khetha umlinganiselo ofanelekileyo wesinyibilikisi kunye namanzi (umz. 50% wamanzi, 50% isinyibilikisi) uze ufudumale ukuya kubushushu obufanelekileyo.
Inyathelo lesi-2: Yongeza i-HPMC
Ngelixa uxuba, yongeza i-HPMC kancinci ukuqinisekisa ukuba iyanyibilika ngokulinganayo.
Inyathelo lesi-3: Uhlengahlengiso olongezelelweyo
Njengoko kufuneka, umlinganiselo wamanzi okanye isinyibilikisi ungandiswa ukuze kulungiswe ukunyibilika kunye nokuxinana kwe-HPMC.
Le ndlela ifanelekile kwiimeko apho izinyibilikisi zendalo zongezwa kwizisombululo zamanzi ukuphucula izinga lokunyibilika okanye ukulungisa iimpawu zesisombululo.
5. Indlela yokunyibilikisa encediswa yi-ultrasonic
Ukusebenzisa isiphumo sokunyibilika kwe-ultrasound esine-frequency ephezulu, indlela yokunyibilika encediswa yi-ultrasound inokukhawulezisa inkqubo yokunyibilika kwe-HPMC. Le ndlela ifanelekile ngokukodwa kwizixa ezikhulu ze-HPMC ekufuneka zinyibilikiswe ngokukhawuleza, kwaye inokunciphisa ingxaki yokuxinana enokwenzeka ngexesha lokuxutywa kwendabuko.
Inyathelo 1: Lungisa isisombululo
Yongeza i-HPMC kwisixa esifanelekileyo samanzi okanye isisombululo esixutyiweyo esinyibilikayo samanzi.
Inyathelo lesi-2: Unyango lwe-ultrasonic
Sebenzisa isicoci se-ultrasonic okanye isinyibilikisi se-ultrasonic kwaye usiphathe ngokwegunya nexesha elibekiweyo. Isiphumo sokushukuma kwe-ultrasound sinokukhawulezisa kakhulu inkqubo yokunyibilika kwe-HPMC.
Inyathelo lesi-3: Jonga isiphumo sokunyibilika
Emva konyango lwe-ultrasound, jonga ukuba isisombululo sinyibilike ngokupheleleyo na. Ukuba kukho inxalenye enganyibilikanga, unyango lwe-ultrasound lunokwenziwa kwakhona.
Le ndlela ifanelekile kwizicelo ezifuna ukuchithwa okusebenzayo nokukhawulezileyo.
6. Unyango lwangaphambi kokunyibilika
Ukuze kuthintelweI-HPMCUkuba i-agglomeration okanye ubunzima bokunyibilika, ezinye iindlela zonyango zingasetyenziswa, njengokuxuba i-HPMC kunye nezinye izinyibilikisi ezincinci (ezifana ne-glycerol), ukuyomisa kuqala, okanye ukumanzisa i-HPMC ngaphambi kokongeza isinyibilikisi. La manyathelo onyango lwangaphambi konyango anokuphucula ngempumelelo ukunyibilika kwe-HPMC.
Zininzi iindlela zokunyibilikisa i-HPMC. Ukukhetha indlela efanelekileyo yokunyibilikisa kunokuphucula kakhulu ukusebenza kakuhle kokunyibilikisa kunye nomgangatho wemveliso. Indlela yokunyibilikisa ubushushu begumbi ifanelekile kwindawo epholileyo, indlela yokunyibilikisa amanzi ashushu inokukhawulezisa inkqubo yokunyibilikisa, kwaye indlela yokunyibilikisa utywala kunye nendlela yokunyibilikisa amanzi axutyiweyo ifanelekile ukunyibilikisa ngeemfuno ezikhethekileyo. Indlela yokunyibilikisa encediswa yi-ultrasonic yindlela esebenzayo yokusombulula ukunyibilikisa ngokukhawuleza kwenani elikhulu le-HPMC. Ngokweemfuno ezithile zesicelo, ukhetho oluguquguqukayo lwendlela efanelekileyo yokunyibilikisa lunokuqinisekisa ukusebenza kakuhle kwe-HPMC kwiinkalo ezahlukeneyo.
Ixesha leposi: Disemba-19-2024