Methylcellulose (MC) ndi Hydroxypropyl Methylcellulose (HPMC) onse omwe amagwiritsidwa ntchito kwambiri m'madzi osungunuka a cellulose, omwe amagwiritsidwa ntchito kwambiri muzakudya, mankhwala, zomangamanga ndi chisamaliro chaumwini.
1. Kusiyana kwamapangidwe
Methylcellulose (MC):
Methylcellulose ndi chochokera ku cellulose yomwe imapezeka posintha gawo lamagulu a hydroxyl a cellulose ndi methyl (-OCH3).
Kapangidwe kake kake ndi kosavuta, kamene kamapangidwa ndi mafupa a cellulose komanso cholowa m'malo mwa methyl.
Hydroxypropyl Methylcellulose (HPMC):
HPMC imapangidwa poyambitsanso hydroxypropyl (-C3H7O) m'malo mwa methylcellulose.
Kusintha kwapangidwe kumeneku kumapangitsa kukhala kopindulitsa kwambiri potengera kusungunuka ndi kukhuthala kwamadzi m'madzi.
2. Kusungunuka
Methylcellulose amasungunuka mosavuta m'madzi ozizira, koma osasungunuka mosavuta m'madzi otentha, ndipo nthawi zambiri amawonetsa chikhalidwe cha colloidal. Izi zimapangitsa kuti katundu wa MC asinthe kutentha kumakwera.
Hydroxypropyl Methylcellulose imatha kusungunuka bwino m'madzi ozizira komanso otentha, ndipo kusungunuka kwake kuli bwino kuposa methylcellulose. HPMC ikhoza kukhalabe ndi kusungunuka kwa madzi pa kutentha kwakukulu ndipo ndi yoyenera ntchito zomwe zimafuna chithandizo cha kutentha.
3. Makhalidwe a viscosity
Methylcellulose ali ndi mamasukidwe otsika kwambiri ndipo ndi oyenera formulations kuti safuna mkulu mamasukidwe akayendedwe.
Hydroxypropyl methylcellulose ili ndi mamasukidwe apamwamba kwambiri ndipo imatha kusinthidwa posintha kulemera kwake kwa maselo ndi kuchuluka kwake m'malo. Izi zimapangitsa kuti HPMC ikhale yosinthika pamagwiritsidwe osiyanasiyana, makamaka m'mafakitale omanga ndi opanga mankhwala.
4. Malo ogwiritsira ntchito
Methylcellulose nthawi zambiri amagwiritsidwa ntchito m'makampani azakudya monga thickener, emulsifier ndi stabilizer, ndipo amagwiritsidwanso ntchito muzinthu zina zamankhwala ngati zokutira mankhwala.
Hydroxypropyl methylcellulose ili ndi ntchito yochulukirapo. Kuphatikiza pa zakudya ndi mankhwala, amagwiritsidwanso ntchito kwambiri muzomangamanga (monga matope owuma) ndi zinthu zosamalira anthu (monga mafuta odzola pakhungu ndi shampoos) chifukwa cha mawonekedwe ake abwino opanga mafilimu ndi kumamatira.
5. Makhalidwe a machitidwe
Methylcellulose imakhala ndi madzi abwino kwambiri osungira komanso kupanga mafilimu ndipo nthawi zambiri amagwiritsidwa ntchito pazinthu zomwe zimafunika kusunga chinyezi.
Hydroxypropyl methylcellulose imakhala ndi kutentha kwabwino komanso mawonekedwe abwino kwambiri opangira mafilimu kuwonjezera pa kusungirako madzi, kotero imagwira ntchito bwino pamagwiritsidwe ntchito ndi chithandizo cha kutentha kwambiri.
6. Chitetezo ndi kukhazikika
Zonsezi ndizowonjezera zopanda poizoni ndipo nthawi zambiri zimawonedwa ngati zotetezeka. Komabe, HPMC ikhoza kukondedwa pamapulogalamu ena chifukwa cha kukhazikika kwake komanso kugwirizana.
Methylcellulose ndi hydroxypropyl methylcellulose amasiyana kwambiri mu kapangidwe ka mankhwala, kusungunuka, mawonekedwe a viscosity ndi malo ogwiritsira ntchito. Kusankhidwa kwa zinthu zoyenera nthawi zambiri kumadalira zosowa za ntchito inayake. MC ndiyoyenera kugwiritsa ntchito kukhuthala kosavuta komanso kukhazikika, pomwe HPMC ndiyoyenera kugwiritsa ntchito zovuta zamakampani ndi zamalonda chifukwa chakusungunuka kwake kwapamwamba komanso kusinthika kwa viscosity.
Nthawi yotumiza: Oct-21-2024