Abasebenzisi abaninzi abasoloko benika ingqalelo kwingxaki yobushushu bejeli ye-hydroxypropyl methyl cellulose HPMC. Kule mihla, i-hydroxypropyl methyl cellulose HPMC ngokubanzi yahlulwe yi-viscosity, kodwa kwezinye iindawo ezikhethekileyo kunye namashishini akhethekileyo, yi-viscosity kuphela yemveliso ebonakaliswayo. Akwanelanga, oku kulandelayo kwazisa ngokufutshane ubushushu bejeli ye-hydroxypropyl methylcellulose HPMC.
Umxholo weqela le-methoxy unxulumene ngokuthe ngqo nomlinganiselo we-ether ye-cellulose. Umxholo weqela le-methoxy ungalungiswa ngokulawula ifomula, ubushushu bokusabela kunye nexesha lokuphendula. Kwangaxeshanye, umgangatho we-etherification uchaphazela umgangatho wokutshintshwa kwe-hydroxyethyl okanye i-hydroxypropyl. Ke ngoko, ukugcinwa kwamanzi kwe-cellulose ether enobushushu obuphezulu be-gel ngokubanzi kubi kancinci. Le nkqubo yemveliso kufuneka ihlolwe, ngoko ke akungenxa yokuba umxholo we-methoxy uphantsi, ixabiso le-cellulose ether liphantsi, ngokuchaseneyo, ixabiso liya kuba phezulu.
Umxholo we-hydroxypropyl methyl cellulose HPMC hydroxypropyl we-QUALICELL yi-25%. Ubushushu bejeli bubaluleke kakhulu ekusetyenzisweni kwe-cellulose ether. Xa ubushushu obujikeleze i-ambient budlula ubushushu bejeli, i-cellulose ether iya kuphuma emanzini ize ilahlekelwe kukugcinwa kwamanzi. Ubushushu bejeli ye-cellulose ether ye-Qualicell bungama-65 degrees, nto leyo enokwanelisa iimfuno zemota kunye nendawo yokusetyenziswa kwe-putty (ngaphandle kweendawo ezikhethekileyo). Ukuba uthenga i-QualiCell HPMC, nceda wazise kwangaphambili ukuba uneemfuno ezizodwa.
Ixesha lokuthumela: Jan-06-2022