Yintoni iHydroxypropyl methylcellulose?

1. Intshayelelo

IHydroxypropyl methylcellulose (HPMC) yipolymer enyibilikayo emanzini esetyenziswa ngokubanzi evela kwiselulosi. Yi-non-ionic, ayinavumba, ayinancasa, imhlophe ukuya kumgubo omhlophe osetyenziswa kakhulu kumashishini okutya, amayeza kunye nezokuthambisa. I-HPMC inoluhlu olubanzi lwezicelo, kubandakanya ukutyeba, ukumilisela, ukumisa, ukuzinzisa, kunye nokwenza ifilim. Ikwasetyenziswa njenge-binder, i-lubricant, kunye ne-disintegrant ekuveliseni iipilisi kunye ne-capsules.

2. IiMathiriyeli ezikrwada

Eyona nto isetyenziswayo ukuvelisa i-HPMC yi-cellulose, eyipolysaccharide eyenziwe ngeeyunithi zeglucose. I-cellulose inokufumaneka kwimithombo eyahlukeneyo, kuquka i-pulp yomthi, umqhaphu, kunye nezinye iintambo zezityalo. Emva koko i-cellulose iphathwa ngenkqubo yekhemikhali ukuvelisa i-hydroxypropyl methylcellulose.

3. Inkqubo yokuVelisa

Inkqubo yokwenziwa kweHPMC ibandakanya amanyathelo amaninzi. Okokuqala, i-cellulose iphathwa nge-alkali, njenge-sodium hydroxide, ukwenza i-alkali cellulose. Le cellulose yealkali emva koko isabela nge-methyl chloride kunye nepropylene oxide ukwenza i-hydroxypropyl methylcellulose. I-hydroxypropyl methylcellulose ke ihlanjululwe kwaye yomiswe ukuze yenze umgubo omhlophe.

4. Ulawulo loMgangatho

Ulawulo lomgangatho yinxalenye ebalulekileyo yenkqubo yokwenziwa kweHPMC. Umgangatho wemveliso unqunywe ngokucoceka kweselulosi, iqondo lokutshintshwa kweqela le-hydroxypropyl, kunye nenqanaba lokutshintshwa kweqela le-methyl. Ukucoceka kwe-cellulose kunqunywe ngokuvavanya i-viscosity yesisombululo, ngelixa i-degree of substitution inqunywe ngokuvavanya iqondo le-hydrolysis ye-hydroxypropyl methylcellulose.

5. Ukupakishwa

I-HPMC idla ngokupakishwa kwiingxowa okanye kwimigqomo. Iingxowa zihlala zenziwe nge-polyethylene okanye i-polypropylene, ngelixa iigubhu zihlala zenziwe ngentsimbi okanye iplastiki. Izinto zokupakisha kufuneka zikhethwe ukuqinisekisa ukuba imveliso ikhuselwe kumswakama kunye nezinye izinto zokusingqongileyo.

6. Ugcino

I-HPMC kufuneka igcinwe kwindawo epholileyo, eyomileyo, kude nelanga elithe ngqo kunye neminye imithombo yobushushu. Imveliso kufuneka ikhuselwe kumswakama kunye nezinye izinto zokusingqongileyo.

7. Isiphelo

I-HPMC isetyenziswa ngokubanzi kwipolima enyibilikayo emanzini ephuma kwiselulosi. Isetyenziswa kumashishini ahlukeneyo, kuquka ukutya, amayeza, kunye nemizi-mveliso yokuthambisa. Inkqubo yokwenziwa kwe-HPMC ibandakanya amanyathelo amaninzi, kubandakanywa unyango lwe-cellulose nge-alkali, ukuphendula kwe-alkali cellulose nge-methyl chloride kunye ne-propylene oxide, kunye nokucocwa kunye nokomisa kwe-hydroxypropyl methylcellulose. Ukulawulwa komgangatho yinxalenye ebalulekileyo yenkqubo yokuvelisa, kwaye imveliso kufuneka igcinwe kwindawo epholileyo, eyomileyo, kude nokukhanya kwelanga kunye neminye imithombo yokushisa.