Focus on Cellulose ethers

Qiimaha kala duwan ee Heerkulka Gel - Hydroxypropyl Methyl Cellulose

1. Heerkulka jel (0.2% xal) 50-90°C.

2. Ku milmay biyaha iyo inta badan polar c iyo saamiga ku habboon ethanol/biyaha, propanol/biyaha, dichloroethane, iwm., aan milmin ee ether, acetone, ethanol dhammaystiran, oo barara si cad ama wax yar u turbid xal kolloidal biyo qabow. Xalka aqueous wuxuu leeyahay dhaqdhaqaaqa dusha sare, daahfurnaanta sare iyo waxqabadka xasilloon.

3. HPMC waxay leedahay hantida gelation kulaylka. Xalka aqueous sheyga ayaa la kululeeyaa si uu u sameeyo jel oo soo da'o, ka dibna mila marka la qaboojiyo ka dib. Heerkulka gelation ee tilmaamo kala duwan ayaa ka duwan. Solubility wuxuu ku kala duwan yahay viscosity. Maqnaanshaha hoose, ayaa sii weynaan kara milanka. Tilmaamaha kala duwan ee HPMC waxay leeyihiin kala duwanaansho gaar ah oo ku saabsan hantidooda, iyo kala dirida HPMC ee biyaha ma saameynayso qiimaha pH.

4. Cabbirka walxaha: heerka gudbinta 100 mesh wuxuu ka weyn yahay 98.5%. Cufnaanta buk: 0.25-0.70g/ (badanaa ku dhawaad ​​0.4g/), cufnaanta gaarka ah 1.26-1.31. heerkulka midabka: 180-200C, heerkulka carbonization: 280-300C. Qiimaha methoxyl wuxuu u dhexeeyaa 19.0% ilaa 30.0%, iyo qiimaha hydroxypropyl wuxuu u dhexeeyaa 4% ilaa 12%. Viscosity (22°C, 2%) 5~200000mPa .s. Heerkulka jel (0.2%) waa 50-90 ° C.

5. HPMC waxay leedahay sifooyinka awoodda dhumucda, dheecaanka milixda, xasiloonida PH, haynta biyaha, xasiloonida cabbirka, hantida samaynta filim heer sare ah iyo baaxad ballaaran oo caabbinta enzyme, kala-baxsanaanta iyo isku xirnaanta.


Waqtiga boostada: Mar-22-2023
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