Hydroxypropyl methyl cellulose (HPMC) i polymer inoshanda zvakasiyana-siyana iyo inoshandiswa zvakanyanya mumaindasitiri akasiyana siyana, kusanganisira chikafu, mishonga, uye kuvaka. Iyo semi-synthetic kubva kune cellulose, inova yakasikwa polymer inowanikwa muchirimwa sero madziro. HPMC inogadzirwa nemakemikari ekugadzirisa cellulose ine hydroxypropyl uye methyl mapoka, ayo anovandudza kunyungudika kwemvura, viscosity, uye zvimwe zvivakwa. Muchikamu chino, tichakurukura zvivakwa zveHPMC uye mashandisiro ayo mumaindasitiri akasiyana.

Kunyungudika kwemvura

Chimwe chezvinhu zvakakosha zveHPMC ndiko kunyungudika kwemvura. HPMC inonyungudika zviri nyore mumvura kuita mhinduro yakajeka, ine viscous. Iyo dhigirii yekunyungudika inoenderana nedhigirii rekutsiva (DS) yeHPMC. DS inoreva nhamba yehydroxypropyl uye methyl mapoka anowedzerwa kune yega cellulose molecule. Iyo yakakwirira yeDS, iyo HPMC inonyanya kunyungudika mumvura. HPMC ine DS ye1.8 kana yepamusoro inoonekwa seyakanyungudika mumvura.

Viscosity

Imwe pfuma yakakosha yeHPMC ndeye viscosity yayo. HPMC i polymer yakanyanya viscous, izvo zvinoreva kuti ine gobvu, syrupy kusachinja-chinja. Iyo viscosity yeHPMC inotsamira pane akati wandei zvinhu, kusanganisira iyo DS, molecular uremu, uye kusungirirwa kwepolymer mumhinduro. Yakakwira DS uye uremu hwemamorekuru zvinoguma nepamusoro viscosity. Iyo viscosity yeHPMC inogona kugadziridzwa nekusiyanisa kusungirirwa kwepolymer mune mhinduro.

Thermal Kugadzikana

HPMC yakagadzikana nekushisa uye inokwanisa kutsungirira tembiricha inosvika 200°C pasina kuderera kukuru. Izvi zvinoita kuti ive yakakodzera kushandiswa mune dzakawanda maindasitiri maitiro anosanganisira kupisa kwakanyanya, sekupfapfaidza kuomesa uye extrusion. HPMC inewo kurwisa kwakanaka kune acids uye mabhesi, izvo zvinoita kuti ive yakakodzera kushandiswa munzvimbo dzine acidic kana alkaline.

Film-Kuumba Properties

HPMC ine yakanakisa firimu-kuumba zvimiro, izvo zvinoita kuti ibatsire mumhando dzakasiyana dzekushandisa. HPMC inogona kuumba yakasimba, inochinjika firimu inopesana nehunyoro, kupisa, uye makemikari. Izvi zvinoita kuti zvive zvakakosha muindasitiri yemishonga yekuputira mahwendefa uye capsules kuvandudza chitarisiko chavo uye kugadzikana. HPMC inogona zvakare kushandiswa muindasitiri yechikafu kugadzira mafirimu anodyiwa anogona kushandiswa kuchengetedza nekuchengetedza zvigadzirwa zvekudya.

Adhesive Properties

HPMC ine yakanaka yekunamira zvivakwa, izvo zvinoita kuti zvive zvakakosha muindasitiri yekuvaka. HPMC inogona kushandiswa sebhainda mune simende-yakavakirwa zvigadzirwa, sedhaka uye grout. Inogona zvakare kushandiswa seyakakora mumatairi adhesives uye majoini mafirita. HPMC inovandudza kushanda uye kushanda kwezvigadzirwa izvi nekupa kunaka kunamatira uye kuchengetedza mvura.

Zvikumbiro zveHPMC

HPMC ine akawanda maapplication mumaindasitiri akasiyana, anosanganisira:

Indasitiri Yezvokudya: HPMC inoshandiswa seyakakora, inosimbisa, uye emulsifier mune zvakawanda zvinogadzirwa zvekudya, senge sosi, madhirezi, uye zvakabikwa zvinhu. Inogona zvakare kushandiswa kugadzira mafirimu anodyiwa uye machira.

Indasitiri yeMishonga: HPMC inoshandiswa sepiritsi uye capsule coating agent, pamwe nebinder, disintegrant, uye inosimudzira-kuburitsa mumiriri mukugadzirwa kwemishonga.

Indasitiri yezvekuzora: HPMC inoshandiswa seyakakora uye inodzikamisa mune zvakawanda zvigadzirwa zvekuzora, senge lotions, makirimu, uye shampoos.

Indasitiri Yekuvaka: HPMC inoshandiswa sebinder, thickener, uye mvura-yekuchengetedza mumiriri mune simende-based zvigadzirwa, zvakaita sedhaka, grout, uye mataira anonamira.

Mhedziso

Hydroxypropyl methyl cellulose (HPMC) ipolymer inoshanda zvakasiyana-siyana ine zvinhu zvakawanda zvinobatsira, zvinosanganisira kunyungudika kwemvura, viscosity, kugadzikana kwemafuta, kugadzira firimu, uye zvinhu zvinonamira. HPMC inoshandiswa mumaindasitiri akasiyana siyana, anosanganisira chikafu, mishonga, zvizorwa, uye kuvaka. Kukwanisa kwayo kugadzira mafirimu akasimba, anoshanduka uye kuvandudza kushanda uye kushanda kwezvigadzirwa zvakasiyana-siyana zvinoita kuti ive chinhu chinokosha mukugadzirwa kwakawanda. HPMC zvakare yakachengeteka kuti ishandiswe muchikafu uye zvigadzirwa zvemishonga uye yakabvumidzwa nemasangano anodzora pasi rese. Saka nekudaro, HPMC yakakosha uye inoshandiswa zvakanyanya polymer inoita basa rakakosha mumashandisirwo mazhinji akasiyana.