Mo te raruraru o te pāmahana reera o te hydroxypropyl methylcellulose HPMC, he maha nga kaiwhakamahi kaore e aro ki te raru o te pāmahana o te hydroxypropyl methylcellulose. I enei wa, ko te hydroxypropyl methylcellulose te nuinga o te wa e wehea ana i runga i te viscosity, engari mo Mo etahi taiao motuhake me nga ahumahi motuhake, kaore e ranea ki te whakaata noa i te viscosity o te hua. Ko nga korero e whai ake nei ka whakaatu poto i te pāmahana reera o te hydroxypropyl methylcellulose.
Ko te nui o te roopu methoxyl e hono tika ana ki te tohu o te kawa o te cellulose, a ka taea te whakatika i te ihirangi o te roopu methoxyl ma te whakahaere i te tauira, te pāmahana tauhohenga me te wa tauhohenga. I te wa ano, ka pa te tohu o te ngoikoretanga ki te tohu whakakapinga 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 ka iti. Me tirotirohia tenei mahi whakangao, na reira ehara i te mea he iti te utu whakaputa o te cellulose ether mena he iti te ihirangi methoxy, engari ka nui ake te utu.
Ko te mahana o te reera ka whakatauhia e nga roopu methoxyl, a ko te pupuri wai ka whakatauhia e nga roopu hydroxypropoxyl. E toru noa nga roopu whakakapi mo te cellulose. Kimihia to pāmahana whakamahi pai, te pupuri wai pai, ka whakatau i te tauira o tenei cellulose.
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 wehea te cellulose ether i te wai ka ngaro te pupuri wai. Ko te wera o te reera o te cellulose ether i runga i te maakete ka taea te whakatutuki i nga hiahia o te taiao whakamahi moata (haunga mo nga taiao motuhake). A, no te tono moata, kahore he take ki te utu motuhake ki te taupū mahi o te pāmahana gel.
Wā tuku: Apr-04-2023