Physicochemical katundu wa Cellulose Ethers

Ma cellulose ethersamawonetsa mitundu yosiyanasiyana ya physicochemicals yomwe imawapangitsa kukhala osunthika komanso ofunikira pamagwiritsidwe osiyanasiyana. Zomwe zimapangidwira zimatha kusiyanasiyana kutengera mtundu wa cellulose ether, kuchuluka kwa m'malo, ndi zina. Nazi zina zazikulu za physicochemical za cellulose ethers:

1. Kusungunuka:
   • Kusungunuka kwa Madzi: Ma cellulose ethers nthawi zambiri amasungunuka m'madzi, chomwe ndi chikhalidwe chofunikira chomwe chimawapangitsa kukhala oyenera kugwiritsidwa ntchito mosiyanasiyana. Solubility imatha kusiyanasiyana pakati pa zotumphukira zosiyanasiyana.
2. Viscosity:
   • Katundu Wokhuthala: Chimodzi mwazinthu zofunika kwambiri zama cellulose ethers ndikutha kukulitsa mayankho. Kukhuthala kwa yankho kumatengera zinthu monga kuchuluka kwa m'malo, kulemera kwa maselo, komanso kuchuluka kwa cellulose ether.
3. Kupanga Mafilimu:
   • Luso Lopanga Mafilimu: Ma cellulose ether ena, kutengera mtundu wawo ndi kalasi, amatha kupanga mafilimu. Katunduyu amagwiritsidwa ntchito ngati zokutira, pomwe filimu yofananira ndiyofunika.
4. Digiri ya Kusintha (DS):
   • Kusintha Kwa Ma Chemical: Mlingo wolowa m'malo umanena za kuchuluka kwamagulu olowa m'malo a hydroxyethyl kapena hydroxypropyl pagawo la shuga mu tcheni cha cellulose. Zimakhudza kusungunuka, kukhuthala, ndi zina za cellulose ethers.
5. Kulemera kwa Molecular:
   • Chikoka pa Viscosity: Kulemera kwa ma cellulose ether kumatha kukhudza kukhuthala kwawo komanso kukhuthala kwawo. Maselo apamwamba a cellulose ether amatha kuwonetsa kukhuthala kwakukulu mu yankho.
6. Gelation:
   • Katundu Wopanga Gel: Kutengera mtundu ndi mikhalidwe, ma cellulose ether amatha kuwonetsa mawonekedwe a gelation. Izi zitha kukhala zofunikira pakugwiritsa ntchito komwe kufananiza ngati gel kumakhala kofunikira, monga m'mapangidwe ena amankhwala.
7. Zochita Pamwamba:
   • Emulsification ndi Kukhazikika: Ma ether ena a cellulose amakhala ndi mphamvu zogwira ntchito pamwamba, kuwapangitsa kukhala opangira ma emulsifiers ndi okhazikika m'mapangidwe omwe kukhazikika kwa emulsion ndikofunikira.
8. Hygroscopicity:
   • Kusunga Madzi: Ma cellulose ether amadziwika chifukwa cha hygroscopic, kuwalola kusunga madzi. Katunduyu ndi wofunikira pakugwiritsa ntchito ngati zida zomangira, pomwe kusungirako madzi ndikofunikira kuti achiritsidwe moyenera komanso kuti agwire ntchito.
9. pH Sensitivity:
   • Kugwirizana kwa pH: Kukhudzika kwa pH kwa ma cellulose ethers ndikofunikira kwambiri pamagwiritsidwe osiyanasiyana. Ma cellulose ether ena amatha kuwonetsa kusiyanasiyana kwazinthu kutengera pH ya yankho.
10. Kumamatira:
    • Katundu Womatira: Pazinthu monga zomatira ndi zokutira, ma cellulose ether amathandizira kumamatira. Iwo akhoza kuonjezera mgwirizano pakati pa zipangizo.
11. Makhalidwe a Rheological:
    • Chikoka pa Mayendedwe Oyenda: Ma cellulose ether amakhudza kwambiri machitidwe a rheological of formulations, kukopa zinthu monga kuyenda, kukhuthala, ndi kumeta ubweya wa ubweya.

Kumvetsetsa physicochemical properties n'kofunika kwambiri posankha cellulose ether yoyenera kuti mugwiritse ntchito. Opanga amapereka zidziwitso zatsatanetsatane komanso mapepala aukadaulo omwe amafotokoza zazinthu izi pamakalasi osiyanasiyana ndi mitundu ya ma cellulose ethers.