He maha nga kaiwhakamahi kaore e aro ki te raru o te hydroxypropyl methyl cellulose HPMC te pāmahana.I enei wa, ko te hydroxypropyl methyl cellulose HPMC te nuinga o te rerekee i te pokey, engari mo etahi taiao motuhake me nga ahumahi motuhake, ko te pokey anake o te hua ka kitea.Kare e ranea, ko nga mea e whai ake nei ka whakaatu poto i te whakamahana o te waiora o te hydroxypropyl methylcellulose HPMC.
Ko te ihirangi o te roopu methoxy e pa ana ki te tohu o te etherification o te cellulose ether.Ko te ihirangi o te roopu methoxy ka taea te whakatika ma te whakahaere i te tauira, te pāmahana tauhohenga me te wa tauhohenga.I te wa ano, ko te tohu o te etherification ka pa ki te tohu o te whakakapi o te hydroxyethyl, hydroxypropyl ranei.Na reira, ko te pupuri i te wai o te cellulose ether me te teitei o te wera o te reera he iti ake te kino.Ko tenei tukanga whakaputa me tirotirohia, na ehara i te mea he iti te ihirangi methoxy, he iti te utu o te cellulose ether, engari ka piki ake te utu.
Ko te ihirangi hydroxypropyl methyl cellulose HPMC hydroxypropyl a QUALICELL he 25%.Ko te pāmahana reera he waahi nui mo te tono o te cellulose ether.Ka nui ake te pāmahana ambient i te pāmahana reera, ka heke te cellulose ether i roto i te wai ka ngaro te pupuri wai.He 65 nga nekehanga te wera o te cellulose ether o Qualicell, ka taea te whakatutuki i nga hiahia o te moata me te whakamahi putty taiao (haunga nga taiao motuhake).Mena ka hoko koe i te QualiCell HPMC, tena koa whakamohio mai i mua mena he whakaritenga motuhake taau.
Te wa tuku: Hanuere-06-2022