Ukusetyenziswa kwe-methyl cellulose ekutyeni

I-Cellulose yeyona polymer yendalo ininzi kwindalo. Yikhompawundi ye-polymer yomgca edityaniswe yi-D-glucose ngokusebenzisa i-β-(1-4) iibhondi ze-glycosidic. Iqondo le-polymerization ye-cellulose linokufikelela kwi-18,000, kwaye ubunzima be-molecular bunokufikelela kwizigidi ezininzi.

I-cellulose inokuveliswa kwi-pulp yomthi okanye i-cotton, yona ngokwayo ayinyibiliki emanzini, kodwa iqiniswa nge-alkali, i-etherified nge-methylene chloride kunye ne-propylene oxide, ihlanjwe ngamanzi, kwaye yomiswe ukufumana i-methyl cellulose e-soluble yamanzi (MC) kunye I-hydroxypropyl methylcellulose (HPMC), oko kukuthi, i-methoxy kunye ne-hydroxypropoxy isetyenziselwa ukubuyisela amaqela e-hydroxyl kwi-C2, i-C3 kunye ne-C6 izikhundla ze-glucose ukwenza i-nonionic cellulose ethers.

I-Methyl cellulose i-methyl cellulose i-odorless, emhlophe ukuya kwi-creamy emhlophe yomgubo ococekileyo ngembonakalo, kwaye i-pH yesisombululo iphakathi kwe-5-8.

Umxholo we-methoxyl we-methylcellulose osetyenziswa njengezongezo zokutya ngokuqhelekileyo phakathi kwe-25% kunye ne-33%, i-degree ehambelanayo yokutshintshwa kwe-17-2.2, kwaye i-degree degree of substitution iphakathi kwe-0-3.

Njengesongezo sokutya, umxholo we-methoxyl we-hydroxypropyl methylcellulose udla ngokuba phakathi kwe-19% kunye ne-30%, kwaye umxholo we-hydroxypropoxyl uvame ukuba phakathi kwe-3% kunye ne-12%.

Iimpawu zokucwangcisa

gel thermoreversible

I-methylcellulose/I-Hydroxypropylmethylcellulose ineempawu zegelling ezisebenzisayo.

I-Methyl cellulose/hydroxypropyl methyl cellulose kufuneka inyibilikiswe emanzini abandayo okanye kubushushu obuqhelekileyo bamanzi. Xa isisombululo samanzi sishushu, i-viscosity iya kuqhubeka iyancipha, kwaye i-gelation iya kwenzeka xa ifikelela kwiqondo lokushisa elithile. Ngeli xesha, i-methyl cellulose/hydroxypropyl methyl cellulose Isisombululo esicacileyo sepropyl methylcellulose saqala ukujika sibe mhlophe opaque, kwaye i-viscosity ebonakalayo yanda ngokukhawuleza.

Obu bushushu bubizwa ngokuba bubushushu bokuqalisa kwejeli. Njengoko i-gel ipholile, i-viscosity ebonakalayo iyancipha ngokukhawuleza. Ekugqibeleni, i-viscosity curve xa ukupholisa kuhambelana ne-curve ye-viscosity yokuqala yokufudumeza, i-gel ijika ibe yisisombululo, isisombululo sijika sibe yi-gel xa sishushu, kwaye inkqubo yokubuyisela isisombululo emva kokupholisa iyabuyiswa kwaye iphindwe.

IHydroxypropyl methylcellulose inobushushu obuphezulu be-thermal gelation yokuqala kune-methylcellulose kunye namandla ejeli asezantsi.

Pukusebenza

1. Iimpawu zokwenza ifilimu

Iifilimu ezenziwe nge-methylcellulose / hydroxypropylmethylcellulose okanye iifilimu eziqulethe zombini zinokuthintela ngokufanelekileyo ukufuduka kweoli kunye nokulahlekelwa kwamanzi, ngaloo ndlela iqinisekisa ukuzinza kwesakhiwo sokutya.

2. Iipropati zokuqinisa

I-Methylcellulose/Hydroxypropylmethylcellulose inokunciphisa ukunyanzeliswa komphezulu kunye nokunciphisa ukuqokelelwa kwamafutha ukwenzela ukuzinza okungcono kwe-emulsion.

3. Ukulawulwa kwelahleko yamanzi

I-Methylcellulose / Hydroxypropylmethylcellulose inokulawula ngokufanelekileyo ukufuduka kokufuma kokutya ukusuka kwiqhwa ukuya kwiqondo lokushisa eliqhelekileyo, kwaye inokunciphisa umonakalo, i-ice crystallization kunye nokuguqulwa kokutya okubangelwa yifriji.

4. Ukusebenza okunamathelayo

I-Methylcellulose/Hydroxypropylmethylcellulose isetyenziswa kwiimali ezisebenzayo ukuphuhlisa amandla ebhondi afanelekileyo ngelixa igcina ukufuma kunye nolawulo lokukhululwa kwencasa.

5. Ukulibaziseka kokusebenza kwamanzi

Ukusetyenziswa kwe-methylcellulose/hydroxypropylmethylcellulose kunokunciphisa i-viscosity yokumpompa ukutya ngexesha lokwenziwa kwe-thermal, ngaloo ndlela iphucula kakhulu ukusebenza kakuhle kwemveliso. Ukunciphisa ibhoyili kunye nezixhobo ezingalunganga, ukukhawulezisa amaxesha omjikelezo wenkqubo, ukuphucula ukusebenza kakuhle kwe-thermal, kunye nokunciphisa ukubunjwa kwediphozithi.

6. Ukuqinisa ukusebenza

I-Methylcellulose/Hydroxypropylmethylcellulose ingasetyenziswa ngokudibanisa nesitashi ukuvelisa i-synergistic effect, enokunyusa kakhulu i-viscosity nakwizinga eliphantsi kakhulu elongezelelweyo.

7. Isisombululo sizinzile phantsi kweemeko ze-acidic kunye notywala

Izisombululo zeMethylcellulose/Hydroxypropylmethylcellulose zizinzile ukuya kuthi ga kwi-pH 3 kwaye zibe nokuzinza okuhle kwizisombululo eziqukethe utywala.

Ukusetyenziswa kwe-methyl cellulose ekutyeni

I-Methyl cellulose luhlobo lwe-ether ye-non-ionic cellulose eyenziwe ngokusebenzisa i-cellulose yendalo njengento eluhlaza kunye nokubuyisela amaqela e-hydroxyl kwiyunithi ye-glucose ye-anhydrous kwi-cellulose kunye namaqela e-methoxy. Inokugcinwa kwamanzi, ukuqina, i-emulsification, ukubunjwa kwefilimu, ukulungelelanisa Uluhlu olubanzi lwe-pH kunye nomsebenzi womphezulu kunye neminye imisebenzi.

Eyona nto ikhethekileyo i-gelation eguqulwayo ye-thermal, oko kukuthi, isisombululo sayo samanzi senza i-gel xa ishushu, kwaye ibuyele kwisisombululo xa ipholile. Isetyenziswa kakhulu kukutya okubhakiweyo, ukutya okuqhotsiweyo, izimuncumuncu, iisosi, isuphu, iziselo, kunye neentsomi. kunye neelekese.

Ijeli ephezulu kwi-methyl cellulose inamandla ejeli angaphezu kwamaxesha amathathu eejeli eziqhelekileyo ze-methyl cellulose, kwaye ineempawu zokuncamathelisa ezomeleleyo, ukugcinwa kwamanzi kunye neempawu zokugcina imilo.

Ivumela ukutya okuhlaziyiweyo ukugcina ukuthungwa okunqwenelekayo okunqwenelekayo kunye ne-juicy mouthfeel zombini ngexesha kunye nexesha elide emva kokufudumeza kwakhona. Ukusetyenziswa okuqhelekileyo kukutya okukhenkcezayo okukhawulezayo, iimveliso zemifuno, inyama ehlaziyiweyo, intlanzi kunye neemveliso zaselwandle kunye neesoseji ezinamafutha aphantsi.