Hydroxypropyl methyl cellulose (HPMC), e mohiotia ana hoki e te hypromatose ingoa hokohoko, he polymer syntheme i ahu mai i te cellouse taiao. Ko te puna matua o te cellulose mo te hanga o te HPMC ko te nuinga o te penupenu rakau, te miro ranei. Ko te tukanga hangahanga e hono ana ki te whakarereke i te cellulose na roto i te waikawa, te whakauru i te hydroxypropyl me nga roopu methyl ki te tuara o te cellulose.

Ko te hanga o te HPMC e maha nga waahanga:

1. Te tangohanga cellulose:
   • Ko te cellulose e puta mai ana i nga puna tipu, ko te tuatahi ko te penupenu rakau, he miro ranei. Ka tangohia te cellulose me te pure hei hanga i te penupenu cellulose.
2. Te whakarewa:
   • Ko te kohinga cellulose e rongoa ana i te otinga o te konutai, te konutai waikawa (nah), hei whakahohe i nga roopu hydroxyl i runga i te mekameka cellulose.
3. Te Whakatau:
   • Ko te Etefication te mea nui i roto i te hanga HPMC. Ko te cellulose alkalized ka tau ki te oxide propylene (mo nga roopu hydroxypropyl) me te methyl chloride (mo nga roopu methyl) ki te whakauru i enei roopu o te cellulose.
4. Te whakakotahitanga me te horoi:
   • Ko te punaha i whakarerekehia, ko wai inaianei ko te hydroxypropyl methyl cellulose, ka raru i te aukati ki te tango i nga toenga alkali. Ka horoia rawatia te whakakore i nga poke me nga hua-a-hua.
5. Te whakamaroke me te mira:
   • Kua maroke te cellulose whakarereke hei tango i te makuku nui me te whakakotahi ki te paura pai. Ka taea te whakahaere i te rahi matūriki i runga i te tono kua whakaritea.

Ko te hua HPMC hua he mea ma, he paura ma ranei me nga tohu rereke o te hydroxypropyl me te whakakapi methyl. Ko nga waahanga motuhake o te HPMC, penei i te whakariterite, te ahupūngao, me etahi atu ahuatanga o te mahi, ka whakawhirinaki ki te tohu o te whakakapinga me te tukanga hangahanga.

He mea nui kia mohio ko te HPMC he polymer semi-simithet, a, i te wa e pa ana ki te punaha matū i te waa o te mahi whakangao mo nga momo tono e hiahiatia ana mo nga momo tono e hiahiatia ana.