Mmetụta dị aṅaa ka ihe onwunwe nke cellulose ether na-ejigide mmiri?

N'ikwu okwu n'ozuzu, na viscosity nkehydroxypropyl methylcellulosedị elu, ma ọ dabere n'ókè nke nnọchi na nkezi ogo nke nnọchi. Hydroxypropyl methylcellulosebụ cellulose cellulose na-abụghị ionic na-acha ọcha na-acha ọcha na-enweghị isi na enweghị ụtọ, soluble na mmiri na ọtụtụ polar organic solvents na nha kwesịrị ekwesị nke ethanol / mmiri, propanol / mmiri, dichloroethane, wdg, na-adịghị ike na acetone na ethanol zuru oke, zara n'ime colloid doro anya ma ọ bụ ntakịrị urukpuru na ngwọta mmiri oyi. Ihe ngwọta mmiri nwere ọrụ elu, na-emepụta ihe nkiri dị mkpa mgbe ọ nwụsịrị, na-eme mgbanwe mgbanwe site na sol ruo gel n'usoro n'elu ikpo ọkụ na jụrụ oyi. Nnukwu nghọta na arụmọrụ kwụsiri ike.

Hydroxypropyl methylcellulose nwere ikike nke gelation thermal. Mgbe ngwọta mmiri nke ngwaahịa ahụ na-ekpo ọkụ, ọ na-emepụta gel na precipitates, na-agbaze mgbe ọ dị jụụ. Okpomọkụ gelation nke nkọwa dị iche iche dị iche iche. Solubility dị iche na viscosity. Na ala viscosity, ka ukwuu solubility. Njirimara nke hydroxypropyl methylcellulose nwere nkọwa dị iche iche dị iche iche. Mgbasa nke hydroxypropyl methylcellulose na mmiri adịghị emetụta uru pH.

Atụmatụ: Ọ nwere njirimara nke ike ịgbari agbaji, mwepu nnu, nkwụsi ike PH, njigide mmiri, nkwụsi ike akụkụ, ihe na-emepụta ihe nkiri mara mma, ụdị dịgasị iche iche nke nguzogide enzyme, dispersibility na cohesiveness.

Nkenjide mmiriIhe ndị a na-emetụtakarị ngwaahịa hydroxypropyl methylcellulose:

1. Ịdị n'otu nke hydroxypropyl methylcellulose

A na-ekesa hydroxypropyl methylcellulose, methoxyl na hydroxypropoxyl n'otu n'otu, na njide mmiri dị elu.

2. Hydroxypropyl methylcellulose thermal gel okpomọkụ

Nke dị elu nke okpomọkụ gel thermal, nke dị elu nke njide mmiri; Ma ọ bụghị ya, na-ebelata ọnụego njide mmiri.

3. Viscosity nke hydroxypropyl methylcellulose

Mgbe viscosity nke hydroxypropyl methylcellulose na-abawanye, ọnụ ọgụgụ njide mmiri na-abawanye; mgbe viscosity rutere n'ogo ụfọdụ, mmụba nke njide mmiri na-eme ka ọ dị nro.

4. Ọnụ ego nke hydroxypropyl methylcellulose agbakwunyere

Ọnụ ọgụgụ dị ukwuu nke hydroxypropyl methylcellulose agbakwunyere, otú ahụ ka ọnụ ọgụgụ njide mmiri dị elu ma na-eme ka mmetụta nke mmiri dịkwuo mma. N'ihe dị iche iche nke 0.25-0.6% mgbakwunye, ọnụ ọgụgụ njide mmiri na-abawanye ngwa ngwa na mmụba nke mgbakwunye ego; mgbe ego mgbakwunye na-abawanye, mmụba na-emekarị nke njide mmiri na-ebelata.