Focus on Cellulose ethers

He aha te nui o to mohio mo Hydroxypropyl methyl cellulose?

He aha te nui o to mohio mo Hydroxypropyl methyl cellulose?

Ko te Hydroxypropyl methylcellulose (HPMC) he ether cellulose i ahu mai i te cellulose taiao. He polymer waihanga, wairewa, kore-ionic e whakamahia nuitia ana i roto i nga momo ahumahi penei i te hangahanga, te rongoa, te kai, te whakapaipai, me nga kakano.

Ka puta te HPMC ma te whakarereke matū i te cellulose me te propylene oxide me te methyl chloride hei whakauru i nga roopu hydroxypropyl me te methyl ki roto i te ngota ngota cellulose. Ko te tohu whakakapinga (DS) o HPMC e pa ana ki te maha o nga roopu hydroxypropyl me te methyl mo ia wae anhydroglucose (AGU) o te cellulose.

He maha nga taonga a HPMC e whai hua ana ki nga momo tono. He wairewa i roto i te wai, ka hanga he otinga maamaa, he pai te pumau o te waiariki. He pumau ano i raro i nga ahuatanga o te pāmahana me te pH, kaore e ngawari te pirau. Ko te HPMC he hygroscopic, ko te tikanga ka taea e ia te tango me te pupuri i te makuku. Ko te kore-paitini, kaore i te riri, me te kore-allergenic, e noho haumaru ana mo te whakamahi i nga tono maha.

I roto i te ahumahi hangahanga, ka whakamahia te HPMC hei pupuhi, hei here, hei pupuri i te wai i roto i nga hua o te ciment, te whakapiri tile, te raima, me etahi atu mea hanga. I roto i te ahumahi ho'oraa, ka whakamahia te HPMC hei here, te whakakore, me te kiriata-o mua i roto i te papa me te hanganga capsule. I roto i te ahumahi kai, ka whakamahia te HPMC hei whakakaha, whakaehunga me te whakapumau i roto i nga momo hua. I roto i nga mea whakapaipai, ka whakamahia te HPMC hei whakamaroke, kiriata-mua, me te emulsifier i roto i nga kirīmi, hinu, me etahi atu hanganga.

I roto i te katoa, ko te HPMC he polymer whaihua me te whai hua he maha nga tono i roto i nga momo ahumahi na ona ahuatanga ahurei.


Te wa tuku: Maehe-17-2023
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