Umehluko phakathi kwe-HPMC ne-HEC

Kokubili i-hydroxypropylll methylcellose kanye ne-hydroxyethyl cellulose kukhona iselula, yini umehluko phakathi kwalezi ezimbili?

"Umehluko phakathi kwe-HPMC ne-HEC"

01 I-HPMC ne-HEC
I-Hydroxypropyl methylcellulose (i-hypromellose), eyaziwa nangokuthi i-Hypromellose, uhlobo lwe-ether exubile exubile. Kuyinto esetshenziswayo, engasebenzi, i-viscoelastic polymer evame ukusetshenziswa njenge-lubrication ku-ophthalmology, noma njenge-excipient noma imoto emithini yomlomo.
Hydroxyswethyl cellulose (HEC), ifomula yamakhemikhali (c2h6o2) n, i-awlor emhlophe noma ekhazimulayo, i-an-anobuthi oqinile noma i-chlorothanol) eyakhiwe nge-alkaline cellulose ne-ethyley oxide (noma i-chloroethanol) ilungiselelwe yi-etherfication futhi ingeye Ionic soluble cellulose afes. Ngoba i-HEC inezindawo ezinhle zokuqina, ukumisa, ukusabalalisa, ukubopha, ukubopha amafilimu, ukuvikela umswakama nokunikeza umswakama futhi kuhlinzekwe umuthi nokudla, izindwangu, iphepha kanye ne-polymer polymerization kanye nezinye izinkambu, ezingama-40 Mesh Sieving Rate ≥ 99%.

02 umahluko
Yize zombili ziyi-cellulose, kunomehluko omkhulu phakathi kwalezi ezimbili:
I-Hydroxypropylm methylcellulose kanye ne-hydroxysethylcellulose kwehluka ngezindawo, ukusetshenziswa, kanye nokuzinikela.

1. Izici ezihlukile
I-Hydroxypropyl Methylcellulose: (HPMC) iyifayibha emhlophe noma efanayo emhlophe noma i-granular powder, ingeyezinhlobonhlobo ze-annonic celvulosise ezixubile. I-viscoelar ye-viscoelastic ye-semi-zokwenziwa engenampilo.
I-HydroxyEthylcellulose: (I-HEC) iyifayibha emhlophe noma ephuzi, engenamondi ne-nontoxic noma i-powder eqinile. Ingene nge-alkaline cellulose ne-ethylene oxide (noma chlorohydrin). Kungokwawo okungekho kwe-moluble cellulose ether.

2. I-solubity ehlukene
I-Hydroxypropyl methylcellulose: cishe insoluble ku-ethanol ngokuphelele, ether kanye ne-acetone. Isixazululo esicacile noma esinamafu kancane sichithwe emanzini abandayo.
IHydroxYethyl Cellulose: Inezakhiwo zokuqina, ukumisa, ukubopha, ukufega, ukusabalalisa kanye nokuthambisa. Kungalungiselela izixazululo ku-viscosity ehlukile futhi ine-solubelity enhle kakhulu yama-electrolyte.
IHydroxypropyl Methylcellulose inezimpawu zekhono lokuqina, ukumelana nosawoti okuphansi, ukuqina kwe-PH, ukugcinwa kwamanzi, ukuqina okubucayi okuhle, ukumelana okuphezulu kwe-enzyme, ukumelana nokuhlangana.

Kunokwehluka okuningi phakathi kwalokhu okubili, futhi ukusebenziseka kwabo embonini nakho kuhluke kakhulu.

IHydroxypropyllylylylylyly isetshenziswa kakhulu njengoMkhulu, i-Dispsant and Stabilizer embonini ye-Coating, futhi ine-soubelity enhle emanzini noma izixazululo ze-organic. Embonini yezokwakha, ingasetshenziswa ku usimende, i-gypsum, i-latex putty, udaka, njll., Ukuthuthukisa ukungafani kwesihlabathi sosimende futhi kuthuthukise kakhulu ipulasitiki nokugcinwa kwamanzi ngodaka kodaka.
IHydroxYethyl Cellulose inezakhiwo zokuqina, okusolayo, okubophayo, okubonisa ukusabalalisa, nokusabalalisa kanye nokuthambisa. Kungalungiselela izixazululo ku-viscosity ehlukile futhi ine-solubelity enhle kakhulu yama-electrolyte. IHydroxYethyl Cellulose iyifilimu ephumelelayo yangaphambili, i-takitifier, isikhulile, i-stabilizer kanye ne-distrilizer eShampoos, izifutho zezinwele, ama-netharriazers, izimo ze-cosmetics; E-wash powders phakathi kunguhlobo lwe-ejenti yokudambisa ukungcola. IHydroxyYethyl Cellulose ihlakaze ngokushesha ekushiseni okuphezulu, okungasheshisa inqubo yokukhiqiza futhi ithuthukise ukusebenza kahle kokukhiqiza. Isici esisobala sokuhlanza okuqukethe i-hydroxyethyl cellulose ukuthi kungathuthukisa ubushelelezi nokuhlangana kwezindwangu.