(Hydroxypropyl)methyl cellulose | I-CAS 9004-65-3

(Hydroxypropyl)methyl cellulose, eyaziwa futhi ngesifinyezo sayo esithi HPMC noma inombolo yayo ye-CAS 9004-65-3, i-cellulose ether etholakala ku-cellulose yemvelo. I-semi-synthetic polymer esetshenziswa kakhulu ezimbonini ezahlukahlukene ngenxa yezakhiwo zayo ezihlukile kanye nokuhlukahluka. Nakhu ukubhekisisa le nhlanganisela:

Isakhiwo Nezakhiwo:
1 Isakhiwo: I-HPMC ihlanganiswa ngokuguqulwa kwamakhemikhali e-cellulose, lapho kokubili amaqembu e-methyl (-CH3) kanye ne-hydroxypropyl (-CH2CHOHCH3) ethulwa kumgogodla we-cellulose.
2 Degree of Substitution (DS): Izinga lokushintsha libhekisela enanini elimaphakathi lamaqembu ashintshile ngeyunithi ngayinye yeglucose kuketango lecellulose. Inquma izici ze-HPMC, njengokuncibilika, i-viscosity, nekhono lokwenza ifilimu.
3 Izakhiwo: I-HPMC ikhombisa izakhiwo ezinjengokuqina, ukugcinwa kwamanzi, ukwakheka kwefilimu, nomsebenzi ongaphezulu. Izakhiwo zingalungiswa ngokulawula i-DS ngesikhathi sokuhlanganiswa.

Ukukhiqiza:
1.Ukuthola I-Cellulose: I-Cellulose, into yokuqala eluhlaza ye-HPMC, itholakala emithonjeni evuselelekayo efana ne-wood pulp noma ukotini.
I-Etherification: I-Cellulose ingena etherification, lapho iphendulwa nge-propylene oxide ukwethula amaqembu e-hydroxypropyl bese kuba nge-methyl chloride ukuze kwengezwe amaqembu e-methyl.
2.Ukuhlanzwa: I-cellulose eguquliwe iyahlanzwa ukuze kukhishwe ukungcola kanye nemikhiqizo, okuholela kumkhiqizo wokugcina we-HPMC.
Izicelo:
3.Imboni Yokwakha: I-HPMC isetshenziswa kakhulu ezintweni zokwakha ezifana nosimende owenziwe usimende, ukhonkolo, nezinamatheliso zamathayela ukuze kuthuthukiswe ukusebenza, ukugcinwa kwamanzi, nokunamathela.
4.Imithi Yemithi: Isebenza njenge-binder, i-thickener, ifilimu yangaphambili, kanye ne-stabilizer ekwenziweni kwemithi okuhlanganisa amaphilisi, amaphilisi, izixazululo ze-ophthalmic, kanye nokhilimu be-topical.
5.Imboni Yokudla: I-HPMC isebenza njengokujiya, ukuqiniswa, kanye ne-emulsifier emikhiqizweni yokudla ehlukahlukene njengamasoso, okokugqoka, ama-ayisikhilimu, nezinto ezibhakwayo.
6.Izimonyo Nokunakekelwa Komuntu Siqu: Ezimonyoni nasezikhiqizweni zokunakekelwa komuntu siqu, i-HPMC isetshenziswa njenge-thiener, i-ejenti elengayo, eyake yaba yifilimu, kanye ne-moisturizer kumakhilimu, okokugcoba, ama-shampoos, namajeli.
I-7.Paints and Coatings: Ithuthukisa i-viscosity, ukumelana ne-sag, kanye nezakhiwo zefilimu zokwakheka kwamanzi kapende, izinto zokunamathisela, nezingubo.
Isiphetho:
(I-Hydroxypropyl) i-methyl cellulose, enohlu lwayo oluhlukahlukene lwezinhlelo zokusebenza nezakhiwo ezinenzuzo, iyisithako esibalulekile emikhiqizweni eminingi yezimboni neyohwebo. Iqhaza layo ekuthuthukiseni ukusebenza, ukuzinza, kanye nokusebenza kokwakheka okuhlukahlukene kuyenza ibaluleke kakhulu emikhakheni eminingi. Njengoba izimboni ziqhubeka nokusungula izinto ezintsha, isidingo se-HPMC kulindeleke ukuthi siqhubeke, siqhubekisele phambili intuthuko ezindleleni zayo zokukhiqiza nasekusebenziseni.