Kodi Cellulose Ethers ndi Chifukwa Chiyani Amagwiritsidwa Ntchito?

Ma cellulose ethers ndi ma polima osungunuka m'madzi opangidwa kuchokera ku cellulose, gawo lalikulu lazomera. Pali mitundu ingapo ya ma cellulose ethers, iliyonse ili ndi zinthu zapadera zomwe zimawapangitsa kukhala abwino pazogwiritsa ntchito zosiyanasiyana.

Magulu aumisiri a cellulose ethers amagwiritsidwa ntchito m'chilichonse kuyambira pazamankhwala ndi zodzoladzola mpaka kumanga ndi kupanga nsalu. Kuphatikiza apo, amagwiritsidwa ntchito ngati zowonjezera chakudya ndi zonenepa mu utoto ndi zokutira.

Mitundu ya ma cellulose ethers

Mitundu itatu yodziwika kwambiri ya ma cellulose ethers ndi hydroxypropylmethylcellulose (HPMC), methylhydroxyethylcellulose (MHEC).

Chifukwa cha kusinthasintha kwake, HPMC ndi mtundu wogwiritsidwa ntchito kwambiri wa cellulose ether. Imapezeka m'makalasi osiyanasiyana okhala ndi masikelo osiyanasiyana a ma molekyulu, magawo olowa m'malo ndi ma viscosities. HPMC angagwiritsidwe ntchito onse acidic ndi zamchere njira, kupanga izo abwino kwa osiyanasiyana ntchito.

MHEC ndi yofanana ndi HPMC koma ili ndi zochepa za hydroxypropyl. Poyerekeza ndi HPMC, kutentha kwa gelation kwa MHEC nthawi zambiri kumakhala kopitilira 80 ° C, kutengera zomwe zili m'gulu komanso njira yopangira. MHEC imagwiritsidwa ntchito ngati thickener, binder, emulsion stabilizer kapena filimu yakale.

Ma cellulose ether ali ndi ntchito zambiri chifukwa cha mawonekedwe awo apadera. Ma cellulose ether omwe amagwiritsidwa ntchito kwambiri ndi awa:

Zonenepa: Ma cellulose ether atha kugwiritsidwa ntchito ngati zokometsera mafuta, zomatira, mankhwala opangira mafuta, chakudya, zodzoladzola, ndi mankhwala.

Zomangira: Ma cellulose ether amatha kugwiritsidwa ntchito ngati zomangira m'mapiritsi kapena ma granules. Amawongolera kupsinjika kwa ufa ndikusungabe katundu wabwino.

Emulsion Stabilizers: Ma cellulose ethers amatha kukhazikika emulsions poletsa coalescence kapena flocculation ya madontho amwazikana. Izi zimawapangitsa kukhala abwino kugwiritsa ntchito ma polima a emulsion monga utoto wa latex kapena zomatira.

Opanga mafilimu: Ma cellulose ether atha kugwiritsidwa ntchito kupanga mafilimu kapena zokutira pamtunda. Nthawi zambiri amagwiritsidwa ntchito pomanga monga matailosi kapena zomatira pazithunzi. Mafilimu opangidwa kuchokera ku cellulose ethers nthawi zambiri amakhala owonekera komanso osinthika, okhala ndi kukana kwabwino kwa chinyezi.