Ihe dị iche n'etiti HPMC na HEC

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

"Ihe dị iche n'etiti HPMC na HEC"

01 HPMC na HEC
Hydroxypropyl methylcellulose (Hypromellose), nke a makwaara dị ka hypromellose, bụ ụdị ether nke na-abụghị ionic cellulose agwakọtara. Ọ bụ polima semisynthetic, nke na-adịghị arụ ọrụ, nke a na-ejikarị eme ihe dị ka mmanụ na ọgwụgwọ anya, ma ọ bụ dị ka ihe na-enyere aka ma ọ bụ ihe eji eme ọgwụ ọnụ.
Hydroxyethyl cellulose (HEC), usoro kemịkalụ (C2H6O2)n, bụ ọcha ma ọ bụ odo odo dị mfe, enweghị isi, na-anaghị egbu egbu ma ọ bụ ntụ ntụ nke mejupụtara alkaline cellulose na ethylene oxide (ma ọ bụ chloroethanol). A na-akwadebe ya site na etherification ma bụrụ nke cellulose ethers na-agbaze na-abụghị ionic. N'ihi na HEC nwere ezigbo ihe onwunwe nke ịka nká, nkwụsịtụ, ịgbasa, emulsifying, njikọta, imepụta ihe nkiri, ichebe mmiri na inye colloid nchebe, ejirila ya mee ihe n'ọtụtụ ebe na nchọpụta mmanụ, mkpuchi, owuwu, ọgwụ na nri, ákwà, akwụkwọ na polymer Polymerization na ubi ndị ọzọ, 40 mesh sieving rate ≥ 99%.

02 ọdịiche
Ọ bụ ezie na ha abụọ bụ cellulose, e nwere ọtụtụ ọdịiche dị n'etiti ha abụọ:
Hydroxypropyl methylcellulose na hydroxyethylcellulose dị iche na njirimara, ojiji, na ike ịgbaze.

1. Atụmatụ Dị Iche Iche
Hydroxypropyl methylcellulose: (HPMC) bụ ọcha ma ọ bụ eriri ọcha yiri ya ma ọ bụ ntụ ntụ granular, nke sitere na ọtụtụ ethers agwakọtara na-abụghị ionic cellulose. Ọ bụ polima viscoelastic nke na-abụghị nke na-adị ndụ.
Hydroxyethylcellulose: (HEC) bụ eriri ma ọ bụ ntụ ntụ ọcha ma ọ bụ odo, nke na-enweghị isi ma na-adịghị egbu egbu. A na-eme ka ọ dị ka alkaline cellulose na ethylene oxide (ma ọ bụ chlorohydrin). Ọ bụ nke cellulose ether nke na-agbaze na-abụghị ionic.

2. Ọdịiche dị iche iche na-agbaze
Hydroxypropyl methylcellulose: ọ fọrọ nke nta ka ọ ghara ịgbaze na ethanol zuru oke, ether na acetone. Mmiri colloidal doro anya ma ọ bụ nke nwere obere igwe ojii nke a gbazere na mmiri oyi.
Hydroxyethyl cellulose: O nwere ihe ndị na-eme ka ọ sie ike, na-eme ka ọ kwụsie ike, na-ejikọta ya, na-eme ka ọ dị nro, na-agbasa na mmiri mmiri. Ọ nwere ike ịkwadebe ihe ngwọta n'ọtụtụ viscosity dị iche iche ma nwee ezigbo ike ịgbaze nnu maka electrolytes.
Hydroxypropyl methylcellulose nwere njirimara nke ikike ime ka ihe sie ike, obere nguzogide nnu, nkwụsi ike pH, idobe mmiri, nkwụsi ike nha, ihe onwunwe dị mma nke na-emepụta fim, nnukwu nguzogide enzyme, mgbasa na njikọta.

E nwere ọtụtụ ihe dị iche n'etiti ha abụọ, uru ha bara n'ọrụ ahụ dịkwa nnọọ iche.

A na-ejikarị Hydroxypropyl methylcellulose eme ihe dị ka ihe na-eme ka ihe dị arọ, ihe na-agbasa na ihe na-eme ka ọ kwụsie ike n'ime ụlọ ọrụ mkpuchi, ọ na-enwekwa ezigbo mmiri ma ọ bụ ihe ndị na-agbaze ihe ndị sitere n'okike. N'ụlọ ọrụ owuwu ụlọ, enwere ike iji ya na simenti, gypsum, latex putty, plasta, wdg, iji melite mgbasa nke ájá simenti ma melite nke ukwuu plasticity na njigide mmiri nke ngwa agha.
Hydroxyethyl cellulose nwere ihe ndị dị ka ịka nká, ịkwụsịtụ, ijikọ, ịchacha, ịgbasa na ịgba mmiri mmiri. Ọ nwere ike ịkwadebe ihe ngwọta n'ụdị dị iche iche viscosity ma nwee ezigbo ike ịgbaze nnu maka electrolytes. Hydroxyethyl cellulose bụ ihe nkiri dị irè, tackifier, thickener, stabilizer na dispersant na shampoos, sprays ntutu, neutralizers, conditioners na ihe ịchọ mma; na ntụ ịsa ákwà. N'etiti bụ ụdị ihe na-eme ka unyi dịghachi ndụ. Hydroxyethyl cellulose na-agbaze ngwa ngwa na okpomọkụ dị elu, nke nwere ike ime ka usoro mmepụta dị ngwa ma melite arụmọrụ mmepụta. Ihe doro anya nke ihe nhicha nwere hydroxyethyl cellulose bụ na ọ nwere ike ime ka ịdị nro na ime ka ákwà dị nro.