I-Cellulose ether (i-Cellulose Ether) i-polymer compound ekhutshwe kwi-cellulose yezityalo zendalo kwaye ifunyenwe ngokuguqulwa kweekhemikhali. Zininzi iindidi ze-cellulose ether, phakathi kwazo i-hydroxypropyl methylcellulose (HPMC) yeyona ixhaphakileyo. I-HPMC inonyibiliko oluhle kakhulu lwamanzi, ukujiya, ukunqunyanyiswa, ukwenza ifilim kunye nokuzinza, kwaye isetyenziswa ngokubanzi kwizinto zokwakha, amayeza, ukutya kunye neemveliso zemichiza yemihla ngemihla.
1. Iimpawu zomzimba kunye neekhemikhali ze-HPMC
I-HPMC yinto ephuma kuyo efunyenwe ngokufaka indawo ye-hydroxyl kwisakhiwo seselulosi kunye ne-methoxy kunye ne-hydroxypropoxy. Inokunyibilika kakuhle kwamanzi kwaye inokuchithwa ngokukhawuleza emanzini abandayo ukwenza isisombululo se-colloidal esicacileyo kunye ne-viscous, kwaye isisombululo saso sibonisa ukuzinza okuthile kwe-thermal kumaqondo okushisa ahlukeneyo. Kwiindawo ezisezantsi, isisombululo se-HPMC siziphatha njenge-pseudoplastic fluid, nto leyo ethetha ukuba ineempawu ezintle ze-rheological, kwaye i-viscosity iyancipha xa ivuselela okanye ifaka uxinzelelo, kodwa i-viscosity ibuyisela ngokukhawuleza emva kokuba amandla amisiwe.
I-viscosity ye-HPMC inokulawulwa ngokulungelelanisa ubunzima bayo be-molecular kunye neqondo lokutshintshela, okwenza kube bhetyebhetye kakhulu kwizicelo kwiinkalo ezahlukeneyo. Ngokumalunga nokuphucula uzinzo lwemveliso, i-HPMC inokudlala indima ngezi ndlela zilandelayo.
2. Iindlela ze-HPMC zokuphucula uzinzo lwemveliso
Ukutyeba kunye nommiselo we-rheological
Njenge-thickener, i-HPMC inokwandisa kakhulu i-viscosity yezisombululo okanye i-slurries, ngaloo ndlela ikhulise ukuzinza kwe-viscosity yenkqubo. Kwezinye iimveliso ezifuna ukulawula ukuguquguquka, ezifana neengubo, izinto zokuthambisa, kunye nokunqunyanyiswa kwamayeza, i-HPMC inokunceda ukukhusela amasuntswana aqinileyo ekuzinziseni kunye nokwandisa ubomi beshelufu yemveliso. Ukongezelela, i-pseudoplasticity ye-HPMC ivumela imveliso ukuba ihlale izinzile ngexesha lokugcinwa kunye nokuthutha, kwaye iququzelele ukuhamba kunye nokusetyenziswa xa isetyenziswa.
Ukunqunyanyiswa kunye nokuzinza kokusasazwa
Kwezinye iinkqubo ezihlakaziweyo, ukuzinza kokumiswa kwamasuntswana aqinileyo okanye amaconsi e-oyile kwimidiya yolwelo sisitshixo sokuchaphazela umgangatho wemveliso. I-HPMC inokwenza i-uniform network structure kulwelo ngokusebenzisa ukutyeba kwayo kwesisombululo kunye namaqela e-hydrophilic kwisakhiwo sayo semolekyuli, ukusonga amasuntswana asasazekileyo ukuthintela i-particle agglomeration, intlenga okanye istratification, ngaloo ndlela iphucula uzinzo lwenkqubo esasazekileyo. Oku kubaluleke kakhulu kwiimveliso ezifana ne-emulsions, ukumiswa, kunye neengubo.
Iimpawu zokwenza ifilimu kunye nemiphumo yokukhusela
Iimpawu zokwenza ifilimu ye-HPMC yenza ukuba yenze ifilimu efanayo kumphezulu wemveliso emva kokumisa. Le filimu ayikwazi ukuthintela kuphela izithako ezisebenzayo kwimveliso ukuba i-oxidized okanye ingcoliswe lihlabathi langaphandle, kodwa ingasetyenziselwa kwimimandla yeyeza kunye nokutya ukulawula izinga lokukhutshwa kweziyobisi okanye ukwandisa ubomi beshelufu yokutya. Ukongeza, umaleko okhuselayo owenziwe yi-HPMC unokunqanda ukulahleka kwamanzi kunye nokuphucula ukuqina kwizixhobo zokwakha ezifana nodaka lwesamente kunye neengubo.
Ukuzinza kwe-Thermal kunye nokuphendula kweqondo lokushisa
HPMC ibonisa uzinzo elungileyo kumaqondo obushushu ezahlukeneyo. I-viscosity yayo kwisisombululo esinamanzi ivakalelwa ngakumbi kwiinguqu zeqondo lokushisa, kodwa isisombululo se-viscosity sihlala sihlala sithe gqolo kwiqondo lokushisa. Ukongeza, i-HPMC ifumana i-gelation eguqukayo kwiqondo elithile lobushushu, elenza libe nefuthe elilodwa lokuzinzisa kwiinkqubo ezifuna ukuvakalelwa kubushushu (njengokutya kunye namayeza).
3. Ukusetyenziswa kweHPMC ukuphucula uzinzo kwiinkalo ngeenkalo
Isicelo kwizinto zokwakha
Kwizinto zokwakha ezifana nodaka lwesamente kunye ne-adhesive tile, i-HPMC isoloko isetyenziselwa ukulungelelanisa ukuhambelana kwe-slurry kunye nokwandisa umbane kunye nokusebenza ngexesha lokwakha. Ukongezelela, i-HPMC ibambezela ngokufanelekileyo ukuchithwa kwamanzi ngokwenza ifilimu emva kokumisa, ukuphepha ukukrazula okanye ukunciphisa ixesha lokusebenza ngexesha lokwakha, ngaloo ndlela kuphuculwe ukuzinza kwezinto kunye nomgangatho wokwakha.
Ukusetyenziswa kumalungiselelo amayeza
Kumalungiselelo amayeza, i-HPMC isetyenziswa ngokubanzi njenge-thickener, ifilimu yangaphambili kunye ne-arhente yokukhululwa elawulwayo. Umphumo wayo wokuqina unokuphucula ukuzinza kwezithako ezisebenzayo ekumisweni okanye emulsions kunye nokuthintela i-stratification yeziyobisi okanye imvula. Ukongeza, ifilimu ekhuselayo eyenziwe yi-HPMC inokulawula izinga lokukhululwa kwamachiza kunye nokwandisa ixesha lokusebenza kweziyobisi. Ngokukodwa kumalungiselelo okukhutshwa okuzinzileyo, i-HPMC yenye yezinto ezixhaphakileyo.
Isicelo ekutyeni
Kwishishini lokutya, i-HPMC isetyenziswa ikakhulu njenge-thickener kunye ne-emulsifier ukuphucula ukuthungwa kunye nencasa yokutya. Ubuchule bayo obugqwesileyo be-hydration bunokugcina ngokufanelekileyo ukufuma kunye nokwandisa ubomi beshelufu yeemveliso. Umzekelo, kwizinto ezibhakiweyo, i-HPMC inokuthintela amanzi ukuba aphume ngokukhawuleza kwaye aphucule ukuthambile kunye nokuthamba kwesonka kunye neekeyiki. Ukongeza, ipropathi yokwenza ifilim ye-HPMC ingasetyenziselwa ukutyabeka ukutya ukuthintela i-oxidation kunye nokuwohloka.
Ukusetyenziswa kwiimveliso zemichiza yemihla ngemihla
Kwiimveliso zemichiza zemihla ngemihla ezifana nezicoci, iishampu, kunye neemveliso zokhathalelo lwesikhumba, i-HPMC ihlala isetyenziswa njengento etyebisayo kunye nokuzinzisa. Inokunyusa ukulungelelaniswa kwemveliso, ukuphucula ukufana kwezinto eziphathekayo, ukwenza i-emulsions okanye iimveliso ze-gel zilula ukuzisebenzisa kwaye zincinci ukuba zibe ne-stratify okanye i-precipitate. Kwangaxeshanye, isiphumo sokuthambisa se-HPMC ikwanceda ekuphuculeni isiphumo sokuthambisa seemveliso zokhathalelo lwesikhumba.
Njengokuphuma kwe-cellulose ether ebalulekileyo, i-HPMC isetyenziswa ngokubanzi kumashishini ahlukeneyo ngenxa yokuqina kwayo okugqwesileyo, ukubunjwa kwefilimu, ukumiswa kunye nokuzinza kwe-thermal, ngakumbi ekuphuculeni ukuzinza kwemveliso. Ingaba kwizinto zokwakha, amayeza, ukutya okanye iimveliso zemichiza yemihla ngemihla, i-HPMC inokwandisa kakhulu ubomi benkonzo yemveliso kwaye iphucule ukusebenza kwayo ngeendlela ezahlukeneyo ezifana nokuphucula i-viscosity yenkqubo, ukulungelelanisa iimpawu ze-rheological, ukuphucula ukunqunyanyiswa kunye nokuzinza kokusasazwa, kunye ukwenza ifilimu ekhuselayo. Kwixesha elizayo, kunye nokuqhubela phambili kwethekhnoloji kunye nokwandiswa okuqhubekayo kweenkalo zesicelo, amandla okusetyenziswa kwe-HPMC kwiinkalo ezininzi ziya kutyhilwa ngakumbi.
Ixesha lokuposa: Sep-21-2024