Mō te pāmahana o te gel o te hydroxypropyl methyl celluloseHPMC, he maha ngā kaiwhakamahi kāore e aro nui ana ki te pāmahana o te hydroxypropyl methyl cellulose. Ināianei, ko te hydroxypropyl methyl cellulose te tikanga whānuitia e wehewehea ana i runga i tōna matotoru, engari mō ētahi taiao motuhake me ngā ahumahi motuhake, kāore e ranea te whakaata noa i te matotoru o te hua. Kei raro nei te whakamārama poto mō te pāmahana o te hydroxypropyl methylcellulose.
He hononga tika te ihirangi o ngā rōpū methoxy ki te nui o te dialysis o te cellulose, ā, ka taea te whakarite i te ihirangi o ngā rōpū methoxy mā te whakahaere i te tātai, te pāmahana tauhohenga me te wā tauhohenga. I taua wā anō, ka pā te nui o te carboxylation ki te nui o te whakakapinga o te hydroxyethyl, te hydroxypropyl rānei. Nō reira, he kino ake te pupuri wai o ngā cellulose ethers me te pāmahana gel teitei. Me tūhura tēnei tukanga whakaputa, nō reira ehara i te mea he iti te ihirangi o te rōpū methoxy, engari he iti te utu whakaputa o te cellulose ether, engari, ka nui ake te utu.
Ka whakatauhia te pāmahana o te tiēre e te rōpū methoxy, ā, ko te pupuri wai ka whakatauhia e te rōpū hydroxypropoxy. E toru noa iho ngā rōpū whakakapinga i runga i te cellulose. Kimihia te pāmahana whakamahi tika mōu, te pupuri wai tika, kātahi ka whakatauhia te tauira o tēnei cellulose.
He mea nui te pāmahana o te gel mō te whakamahinga ote etera cellulose. Ina nui ake te pāmahana o te taiao i te pāmahana tiēre, ka wehe te cellulose ether i te wai, ā, ka ngaro te pupuri wai. Ko te pāmahana tiēre o te cellulose ether kei te mākete ka taea te whakatutuki i ngā hiahia o te taiao e whakamahia ana te moata (haunga ngā taiao motuhake). Me whai whakaaro ngā kaihanga ki tēnei.
Wā tuku: Paenga-whāwhā-26-2024