IHydroxypropyl methyl cellulose (HPMC) iyi-polymer eguquguqukayo esetshenziswa kabanzi ezimbonini ezahlukahlukene, kufaka phakathi ezokudla, ezemithi, nezokwakha. I-semi-synthetic derivative of cellulose, okuyi-polymer yemvelo etholakala ezindongeni zamaseli ezitshalo. I-HPMC yenziwe ngokushintsha amakhemikhali i-cellulose ngamaqembu e-hydroxypropyl kanye ne-methyl, ethuthukisa ukunyibilika kwayo kwamanzi, i-viscosity, nezinye izici. Kulesi sihloko, sizoxoxa ngezakhiwo ze-HPMC kanye nokusetshenziswa kwayo ezimbonini ezahlukene.

Ukuncibilika kwamanzi

Enye yezinto ezibaluleke kakhulu ze-HPMC ukuncibilika kwayo emanzini. I-HPMC incibilika kalula emanzini ukuze yakhe isixazululo esicacile, esibonakalayo. Izinga lokuncibilika lincike ezingeni lokushintsha (DS) le-HPMC. I-DS ibhekisela enanini le-hydroxypropyl namaqembu e-methyl angezwa ku-molecule ngayinye ye-cellulose. Uma iphezulu i-DS, i-HPMC iyancibilika kakhulu emanzini. I-HPMC ene-DS engu-1.8 noma ngaphezulu ithathwa njengencibilika kakhulu emanzini.

I-Viscosity

Enye impahla ebalulekile ye-HPMC yi-viscosity yayo. I-HPMC iyi-polymer e-viscous kakhulu, okusho ukuthi inokuqina, ukungaguquguquki. I-viscosity ye-HPMC incike ezintweni ezimbalwa, okuhlanganisa i-DS, isisindo samangqamuzana, kanye nokugxila kwe-polymer esixazululweni. I-DS ephakeme kanye nesisindo samangqamuzana kubangela i-viscosity ephakeme. I-viscosity ye-HPMC ingalungiswa ngokushintshanisa ukugxila kwe-polymer esixazululweni.

Ukuzinza Okushisayo

I-HPMC izinzile ngokushisa futhi ingakwazi ukumelana namazinga okushisa afika ku-200°C ngaphandle kokuwohloka okukhulu. Lokhu kuyenza ifanelekele ukusetshenziswa ezinqubweni eziningi zezimboni ezibandakanya amazinga okushisa aphezulu, njengokumisa isifutho nokukhipha. I-HPMC futhi inokumelana okuhle nama-asidi nezisekelo, okuyenza ifanelekele ukusetshenziswa ezindaweni ezine-asidi noma ezine-alkali.

Izakhiwo Zokwenza Ifilimu

I-HPMC inezinto ezinhle kakhulu zokwenza ifilimu, eziyenza ibe wusizo ezinhlelweni ezihlukahlukene. I-HPMC ingenza ifilimu eqinile, eguquguqukayo imelana nomswakama, ukushisa, namakhemikhali. Lokhu kwenza kube usizo embonini yezemithi yokugcoba amaphilisi namaphilisi ukuze kuthuthukiswe ukubukeka kwawo nokuzinza. I-HPMC ingasetshenziswa futhi embonini yokudla ukwenza amafilimu adliwayo angasetshenziswa ukulondoloza nokuvikela imikhiqizo yokudla.

Izinto Ezinamathelayo

I-HPMC inezinto ezinhle zokunamathela, eziyenza ibe wusizo embonini yezokwakha. I-HPMC ingasetshenziswa njengesibophezelo emikhiqizweni esekwe usimende, njengodaka kanye negrout. Ingasetshenziswa futhi njenge-thickener kuma-adhesives we-tile kanye nama-filler ahlangene. I-HPMC ithuthukisa ukusebenza nokusebenza kwale mikhiqizo ngokunikeza ukunamathela okuhle nokugcinwa kwamanzi.

Izicelo ze-HPMC

I-HPMC inezinhlelo zokusebenza eziningi ezimbonini ezahlukene, okuhlanganisa:

Imboni Yokudla: I-HPMC isetshenziswa njenge-thickener, stabilizer, kanye ne-emulsifier emikhiqizweni eminingi yokudla, njengamasoso, okokugqoka, nezinto ezibhakwayo. Ingase futhi isetshenziselwe ukwakha amafilimu adliwayo kanye nama-coatings.

Imboni Yemithi: I-HPMC isetshenziswa njengethebhulethi kanye ne-ejenti yokuhlanganisa ikhephusi, kanye ne-binder, disintegrant, kanye ne-ejenti ekhishwayo ekwenziweni kwemithi.

Imboni Yezimonyo: I-HPMC isetshenziswa njenge-thickener ne-stabilizer emikhiqizweni eminingi yezimonyo, njengamaloshini, okhilimu, nama-shampoos.

Imboni Yezokwakha: I-HPMC isetshenziswa njenge-binder, thickener, kanye ne-ejenti yokugcina amanzi emikhiqizweni esekwe usimende, njengodaka, i-grout, nezinamatheliso zamathayela.

Isiphetho

IHydroxypropyl methyl cellulose (HPMC) iyi-polymer eguquguqukayo enezinto eziningi eziwusizo, ezihlanganisa ukuncibilika kwamanzi, i-viscosity, ukuqina kokushisa, izakhiwo zefilimu, kanye nezakhiwo zokunamathela. I-HPMC isetshenziswa ezinhlobonhlobo zezimboni, ezihlanganisa ukudla, ezemithi, izimonyo, nezokwakha. Ikhono layo lokwenza amafilimu aqinile, aguquguqukayo kanye nokwenza ngcono ukusebenza nokusebenza kwemikhiqizo ehlukahlukene kuyenza ibe isithako esibalulekile ekwakhiweni okuningi. I-HPMC futhi iphephile ukuthi isetshenziswe ekudleni nasemikhiqizweni yezemithi futhi igunyazwe yizinhlangano ezilawulayo emhlabeni jikelele. Kanjalo, i-HPMC iyi-polymer ebalulekile nesetshenziswa kabanzi edlala indima ebalulekile ezinhlelweni eziningi ezahlukene.