N'ikwu okwu n'ozuzu, viscosity nke hydroxypropyl methylcellulose dị elu. Otú ọ dị, ọ na-adaberekwa n'ókè nke nnọchi na nkezi nke ogo ngbanwe. Hydroxypropyl methyl cellulose bụ nke na-abụghị ionic cellulose ether, ọdịdị ahụ bụ ntụ ntụ ọcha, enweghị isi na enweghị ụtọ, soluble na mmiri na ọtụtụ polar organic solvents na nha kwesịrị ekwesị nke ethanol / mmiri, propanol / mmiri, dichlorethylene Ọ bụ insoluble na alkanes, acetone, na ethanol zuru oke, ma zaa n'ime ngwọta colloidal doro anya ma ọ bụ ntakịrị turbid na 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 ịgbapụta, mwepụ nnu, nkwụsi ike PH, nkwụsi ike mmiri, nkwụsi ike akụkụ, ihe na-emepụta ihe nkiri mara mma, ụdị dịgasị iche iche nke nkwụsị nke enzyme, dispersibility na cohesiveness.
Ihe ndị a na-emetụtakarị njigide mmiri nke 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 ọnụ ọgụgụ 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-arịwanye elu nke njide mmiri na-ebelata.
Oge nzipu: Mar-14-2023