Ọdịiche dị n'etiti HPMC na HEC

Ma hydroxypropyl methylcellulose na hydroxyethyl cellulose bụ cellulose, kedu ihe dị iche n'etiti ha abụọ?

"Ọdịiche dị n'etiti HPMC na HEC"

01 HPMC na HEC
Hydroxypropyl methylcellulose (Hypromellose), nke a makwaara dị ka hypromellose, bụ ụdị ether na-abụghị ionic cellulose. Ọ bụ semisynthetic, anaghị arụ ọrụ, polymer viscoelastic a na-ejikarị dị ka mmanu na ophthalmology, ma ọ bụ dị ka ihe excipient ma ọ bụ ụgbọ n'ime ọgwụ ọnụ.
Hydroxyethyl cellulose (HEC), usoro kemịkal (C2H6O2) n, bụ ọcha ma ọ bụ ìhè edo edo, enweghị isi, fibrous na-adịghị egbu egbu ma ọ bụ powdery siri ike nke nwere alkaline cellulose na ethylene oxide (ma ọ bụ chloroethanol) A na-akwado ya site na etherification ma bụrụ nke na-abụghị. ionic soluble cellulose ethers. N'ihi na HEC nwere ezigbo ihe nke ịgbasa, nkwụsịtụ, ịgbasa, emulsifying, bonding, film-forming, na-echebe mmiri na inye colloid nchebe, a na-ejikarị ya eme ihe na nchọpụta mmanụ, mkpuchi, ihe owuwu, ọgwụ na nri, textile, akwụkwọ na polymer polymerization. na ubi ndị ọzọ, 40 ntupu sieving ọnụego ≥ 99%.

02 iche
Ọ bụ ezie na ha abụọ bụ cellulose, enwere ọtụtụ ọdịiche dị n'etiti ha abụọ:
Hydroxypropyl methylcellulose na hydroxyethylcellulose dị iche na njirimara, ojiji, na solubility.

1. Akụkụ dị iche iche
Hydroxypropyl methylcellulose: (HPMC) bụ eriri na-acha ọcha ma ọ bụ nke yiri ya ma ọ bụ ntụ ntụ granular, nke dị iche iche nonionic cellulose mix ethers. Ọ bụ ọkara sịntetik na-adịghị ndụ viscoelastic polymer.
Hydroxyethylcellulose: (HEC) bụ ọcha ma ọ bụ odo, enweghị isi na eriri na-adịghị egbu egbu ma ọ bụ ntụ ntụ siri ike. A na-ewepụ ya site na alkaline cellulose na ethylene oxide (ma ọ bụ chlorohydrin). Ọ bụ nke cellulose ether soluble na-abụghị ionic.

2. Solubility dị iche iche
Hydroxypropyl methylcellulose: ọ fọrọ nke nta ka ọ ghara ịsacha ya na ethanol zuru oke, ether na acetone. Ngwọta colloidal doro anya ma ọ bụ ntakịrị urukpuru gbazere na mmiri oyi.
Hydroxyethyl cellulose: Ọ nwere Njirimara nke ndim, suspending, ejikọta, emulsifying, dispersing na moisturizing. Ọ nwere ike ịkwadebe ngwọta dị iche iche viscosity ranges na nwere magburu onwe nnu solubility maka electrolytes.
Hydroxypropyl methylcellulose nwere njiri mara ikike ịgba, obere nguzogide nnu, nkwụsi ike pH, njigide mmiri, nkwụsi ike akụkụ, ihe nrụpụta ihe nkiri mara mma, nguzogide enzyme buru ibu, mgbasa na ịdị n'otu.

Enwere ọtụtụ ọdịiche dị n'etiti abụọ ahụ, uru ha bara na ụlọ ọrụ ahụ dịkwa nnọọ iche.

A na-ejikarị hydroxypropyl methylcellulose dị ka thickener, dispersant na stabilizer na mkpuchi mkpuchi, ma nwee ezigbo solubility na mmiri ma ọ bụ ihe mgbaze organic. N'ime ụlọ ọrụ mmepụta ihe, enwere ike iji ya na ciment, gypsum, latex putty, plasta, wdg, iji melite dispersibility nke ájá ciment ma mee ka plasticity na njigide mmiri nke ngwa agha dịkwuo mma.
Hydroxyethyl cellulose nwere Njirimara nke ndim, suspending, ejikọta, emulsifying, dispersing na moisturizing. Ọ nwere ike ịkwadebe ngwọta dị iche iche viscosity ranges na nwere magburu onwe nnu solubility maka electrolytes. Hydroxyethyl cellulose bụ ihe nkiri dị irè nke mbụ, tackifier, thickener, stabilizer na dispersant na shampoos, ntutu sprays, neutralizers, conditioners na ịchọ mma; na-asa ntụ ntụ N'etiti bụ ụdị unyi redeposition gị n'ụlọnga. Hydroxyethyl cellulose na-agbaze ngwa ngwa na oke okpomọkụ, nke nwere ike ime ka usoro mmepụta ahụ dịkwuo ngwa ma melite mmepụta mmepụta ihe. Ihe doro anya nke ihe ncha nwere hydroxyethyl cellulose bụ na ọ nwere ike imeziwanye ire ụtọ na mercerization nke ákwà.