Methyl cellulose (Mc) ndi hydroxypylyulose (hpmc) onse ochokera pa cellulose ndipo amagwiritsidwa ntchito kwambiri m'mankhwala, chakudya, zomangira ndi minda ina. Ngakhale onsewa amachokera ku cellulose wachilengedwe ndipo ali ndi ntchito zofananira pakugwiritsa ntchito zina, ali ndi kusiyana kwakukulu pamankhwala, zinthu zakuthupi, magawo ogwiritsira ntchito ndi machitidwe.
1. Kapangidwe ka mankhwala ndi njira yokonzekera
Methyl cellulose (MC): Methyl cellulose imapangidwa ndi kulowetsedwa gawo kapena magulu onse a hydroxyl (-Oh) la ma cellulose okhala ndi magulu a methoxy (-Och₃). Makamaka, magulu a hydroxyl mu cellulose amatenga zowongolera (monga methyl chloride) pansi pa alkalinesnellulose. Chifukwa cha madigiri osiyanasiyana olowa m'malo, MC imatha kukhala ndi kusungunuka kosiyanasiyana ndi mafayilo.
Hydroxypylferose (HPMC): HPMC ikusinthidwa pamaziko a mc, ndiye kuti, mu gulu la hydroxyl lokhalo limasinthidwa ndi gulu la hydroxypyl. Kukonzekera kwa HPMC kumaphatikizapo kuchita zinthu ziwiri: Choyamba cha Methylation ndipo kenako hydroxypropropropropropropropropropropropropropropy. Chifukwa cha izi ziwirizi, katundu wa HPMC ndiwovuta komanso wosiyanasiyana.
2. Solubility ndi katundu wakuthupi
Kusungunuka kwa Mc: Methylcellulose ali ndi malo abwino osungunuka m'madzi ozizira, koma samasungunuka m'madzi otentha. Njira yake idzatulutsa gel thehenon phenomenon, zomwe zimapangitsa MC kukhala ndi phindu la ntchito yapadera pazinthu zina, monga kugwiritsa ntchito pomanga zida.
Kusungunuka kwa HPMC: Mosiyana ndi izi, hpmc imasungunuka m'madzi onse ozizira komanso otentha, ndipo mayankho ake amakhala ndi ma victoni ambiri. Kuphatikiza apo, HPMC imawonetsa kukhazikika kwabwino kwambiri komanso sikumva zosintha mu mtengo wamtundu, motero amagwiritsidwa ntchito kwambiri m'mafakitale ndi zakudya.
3. Magawo ogwiritsa ntchito
Kugwiritsa ntchito methylcelulose M'makampani opanga mankhwala, MS nthawi zina imagwiritsidwa ntchito ngati othandizira mapiritsi ndi mawonekedwe a makanema a makapisozi.
Ntchito za hydroxypropyl methylcelulose yosiyanasiyana kuposa MC m'mafakitale ambiri chifukwa chosungunuka. Mwachitsanzo, HPMC imagwiritsidwa ntchito kwambiri pa malonda opangira mankhwala kuti akonzekere mapiritsi ovomerezeka ndi mapiritsi a kapisole, komanso ngati wokulirapo komanso mafuta okonzekera ma ophthalmic. M'malo opangira, hpmc nthawi zambiri amagwiritsidwa ntchito ngati chotsitsimutsa komanso chosunga madzi kwa matope, zomata komanso zomatira. Kuphatikiza apo, HPMC imagwiritsidwanso ntchito ngati thickener, emulsifier ndi okhazikika m'makampani azakudya.
4. Mawonekedwe antchito ndi kusiyana kwa magwiridwe antchito
Makhalidwe a MC: gawo losiyanitsa la methylcellulose ndi katundu wake wamafuta, zomwe zimapangitsa kuti zikhale zothandiza pakugwiritsa ntchito matenthedwe. Kuphatikiza apo, njira yothetsera vuto la MC ili ndi mawonekedwe enaake owonekera komanso zochitika zapadziko, zomwe zimapindulitsa m'makampani ena.
Machitidwe a HPMC: Hydroxypypyll Methylcellulose amadziwika ndi kuwongolera kwake kwa kusungunuka ndikusintha kwa mafayilo, komanso kukhazikika kwake kwa PH. Makhalidwe awa amapanga hpmc kuwonetsa kusinthasintha kwakukulu ndi kukhazikika pamapulogalamu osiyanasiyana. Kuphatikiza apo, ma biocomc a HPMC ndipo osadandaula kumapangitsa makamaka makamaka m'mafakitale azachipatala ndi chakudya.
5. Kuteteza zachilengedwe ndi chitetezo chachilengedwe
Zachilengedwe Zosangalatsa za MC ndi HPMC: Monga kuchotsera kwa cellulose, MC ndi Hopmc ndi zinthu zochulukirapo ndipo sizivuta kwambiri. Kuphatikiza apo, zinthu zonsezi ndi zoopsa, zosakhala zotetezeka komanso zotetezeka kuti zizigwiritsa ntchito madera omwe ali ndi vuto lalikulu la anthu, monga chakudya ndi mankhwala.
Ngakhale methylclulose (Mc) ndi Hydroxypropylmethmethylceloulose (HPMC) ikhale ndi kufanana kwa kapangidwe kake, zinthu zakuthupi, minda yogwira ntchito ndi osiyana m'malo osiyanasiyana. Pali zosiyana zambiri. MC makamaka makamaka pazogwiritsa ntchito zomwe zimafunikira mafuta opindika, monga momwe amapangira; Ngakhale HPMC imagwiritsidwa ntchito kwambiri mu mankhwala ogulitsa, chakudya ndi mafakitale omanga ndi mafakitale chifukwa chake kususuka kwambiri, kukhazikika komanso osadandaula. Kuzindikira kusiyana pakati pa awiriwa kungakuthandizeni kusankha zofunikira kwambiri pofunsira kwina.
Post Nthawi: Feb-17-2025