He aha nga rauemi matua o te hydroxypropyl methylcellose (HPMC)?

2.. Tuhinga o mua (Naoh)
Ko te konutai waikawa (Naoh) e hiahiatia ana mo te ahua kino me te whakarewa o te cellulose. Ko ona mahi matua ko:
Te pupuhi o te ngota cellullose me te whakapiki i nga mahi tauhohenga;
Te whakangaro i te waahanga tioata o te cellulose kia ngawari ake ai te whai i te tauhohenga etetifiction;
Te whakatairanga i te methylation o muri me te tauhonga hydroxypropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropropy

3. Metyl chloride (ch₃cl)
Ko te methyl chloride (methyl chloride) he reagent matua mo te tauhohenga methylation i te whakaputanga o te kimacell®hpmc. Ka aro atu ki te cellulose alkalized ki te whakakapi i etahi roopu hydroxyl (-OTE) me nga roopu methoxy (-och₃) ki te hangamethyl cellulose (mc), ma te whakapai ake i te ngoikoretanga me te ahupūngao a tinana me te matū o te cellulose.

4. Oleylene Oxide (C₃h₆o)
Ka whakamahia te Openylene Oxide i te tauhohenga hydroxypropylation, ka taea te whakauru i te hydroxypropyl (-ch₂chohch₃) roopu i runga i te mekameka hinu cellullular. Ko te whakaurunga o te hydroxypropyl ka taea:
Ka whakarei ake ano i te whakamahinga o te wai o te HPMC;
Whakapai ake i te tirohanga me te raupapatanga o te otinga;
Whakapai ake i te pūmautanga i te pāmahana rerekē.

5
Ko te wai, te whakarewa ranei o te whakarewa (penei i te isopropanol, me te methanol, me etahi atu) e whakamahia ana hei kaupapa tauhohenga i roto i te tukanga whakaputa hei awhina i te whakakii i nga taonga me te mana whakahaere. I tua atu, ka whakamahia etahi o nga whakarewa hei tango i nga hua-a-hua i roto i te whakatakotoranga o muri me te mahi horoi ki te whakarite i te ma o te hua.

6.. Te waikawa, te hakihaki ranei
Hei whakamahi i nga tikanga tauhohenga me te whakapai ake i te whaihua o te whakarei, te waikawa konutai ranei i te waikawa sulfuric (h₂so₄) hei whakatika i te uara pH

7. Ko etahi atu rauemi awhina awhina
Ko etahi o nga whakatuu, ka whakamahia pea etahi atu taapiri matū hei whakapai ake i te kounga o te HPMC, kia kaha, kia whakahaere hoki i ona taonga tinana me te matū.