Focus on Cellulose ethers

Ƙimar Rage don Zazzaɓin Gel - Hydroxypropyl Methyl Cellulose

1. Gel zafin jiki (0.2% bayani) 50-90 ° C.

2. Soluble a cikin ruwa da kuma mafi yawan iyakacin duniya c da kuma dace rabo na ethanol / ruwa, propanol / ruwa, dichloroethane, da dai sauransu, insoluble a cikin ether, acetone, cikakken ethanol, da kuma kumbura a fili ko dan kadan turbid a cikin ruwan sanyi colloidal bayani. Maganin ruwa mai ruwa yana da aikin saman, babban nuna gaskiya da kwanciyar hankali.

3. HPMC yana da mallakar thermal gelation. Maganin ruwa na samfurin yana mai zafi don samar da gel kuma yana hazo, sannan ya narke bayan sanyaya. Yanayin gelation na ƙayyadaddun bayanai daban-daban ya bambanta. Solubility ya bambanta da danko. Ƙananan danko, mafi girma da solubility. Bayanai daban-daban na HPMC suna da wasu bambance-bambance a cikin kaddarorin su, kuma ƙimar pH ba ta shafar rushewar HPMC a cikin ruwa.

4. Barbashi Girma: da wucewa kudi na 100 raga ya fi 98.5%. Girman girma: 0.25-0.70g/ (yawanci kusan 0.4g/), ƙayyadaddun nauyi 1.26-1.31. Zazzabi mai launi: 180-200 ° C, zafin jiki na carbonization: 280-300 ° C. Ƙimar methoxyl tana daga 19.0% zuwa 30.0%, kuma ƙimar hydroxypropyl tana daga 4% zuwa 12%. Dankowa (22°C, 2%) 5~200000mPa .s. Gel zafin jiki (0.2%) shine 50-90 ° C.

5. HPMC yana da halaye na iya yin kauri, fitarwar gishiri, kwanciyar hankali na PH, riƙewar ruwa, kwanciyar hankali mai girma, kyakkyawan kayan aikin fim da kewayon juriya na enzyme, dispersibility da haɗin kai.


Lokacin aikawa: Maris 22-2023
WhatsApp Online Chat!