No hea te hydroxypropyl methylcellulose?

Ko te Hydroxypropyl methylcellulose (HPMC) he polymer waihanga i ahu mai i te cellulose, he mea hanga noa i te hanga i nga pakitara o nga tipu. He mea hanga te HPMC ma te whakarereke matū i te cellulose na roto i te tukanga e kiia nei ko te etherification.

I roto i te etherification, ka tukuna te cellulose ki te ranunga o te propylene oxide me te methyl chloride i raro i nga tikanga whakahaere hei whakaputa i te hydroxypropyl cellulose (HPC). Ka whakarereketia ano te HPC ma te rongoa ki te methanol me te waikawa maaota hei whakaputa HPMC.

Ko te hua o te HPMC he wai-wairewa, he polymer kore-katote he maha nga mea whai hua, penei i te pupuri i te wai teitei, te pai o te hanga kiriata, me te tino pai o te matotoru me te whakapumau. Ko enei taonga ka whai hua te HPMC i roto i te whānuitanga o nga tono, penei i nga rawa hanga, rongoa, me nga hua kai.

Ahakoa i ahu mai te HPMC mai i te cellulose, he polymer waihanga ka puta mai i te tukanga matū uaua.