1. Hydroxypropyl methyl celluloseAhakoa he wairewa ki te wai matao, ka uaua te wai wera kua wairewa. Engari he nui ake te pāmahana o te wairewa i roto i te wai wera i tērā o te methyl cellulose. Ka tino pai ake hoki te wairewa o te methyl cellulose ki roto i te wai matao.
2. E pā ana te matotoru o te hydroxypropyl methyl cellulose ki tōna taumaha ngota, ā, ko te nui ake o te taumaha ngota, ko te teitei ake o te matotoru. Ka pā anō te pāmahana ki tōna matotoru, ka piki ake te pāmahana, ka heke iho te matotoru. Heoi, he iti ake te matotoru o te pāmahana teitei i tō te methyl cellulose. He pumau te otinga ina rongoatia ki te pāmahana rūma.
3. He pumau te Hydroxypropyl methyl cellulose ki te waikawa me te alkali, ā, he tino pumau tōna wairewa i te awhe pH=2~12. Kāore he pānga nui o te houra kautika me te wai raima ki ōna āhuatanga, engari ka taea e te alkali te whakatere i tōna tere whakarewa me te whakapai ake i te matotoru o te pine. He pumau te Hydroxypropyl methyl cellulose ki ngā tote whānui, engari ina teitei te kukū o te wairewa tote, ka piki ake te matotoru o te wairewa hydroxypropyl methyl cellulose.
4. Ko te pupuri wai o te hydroxypropyl methyl cellulose e whakawhirinaki ana ki tōna nui tāpiri, te matotoru, me ētahi atu. Ko te tere pupuri wai i raro i te nui tāpiri kotahi he teitei ake i tērā o te methyl cellulose.
5. He nui ake te piri o te hydroxypropyl methyl cellulose ki te hanganga moata i tō te methyl cellulose.
6. Hydroxypropyl methyl celluloseHe pai ake te ātete ki ngā whākōkī i te methyl cellulose, ā, he iti ake te tūponotanga o te pirau whākōkī i roto i te wairewa i te methyl cellulose.
Wā tuku: Paenga-whāwhā-26-2024