Carboxymethylcellulose (CMC) ndi methylcellulose (MC) onse amachokera ku cellulose, polima wachilengedwe wopezeka m'makoma a cellulose.Zochokera ku izi zimagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana chifukwa cha mawonekedwe awo apadera.Ngakhale amagawana zofanana, CMC ndi MC zili ndi kusiyana kosiyana pamapangidwe awo amankhwala, katundu, ntchito, ndikugwiritsa ntchito mafakitale.
1.Mapangidwe a Chemical:
Carboxymethylcellulose (CMC):
CMC imapangidwa ndi etherification ya cellulose ndi chloroacetic acid, zomwe zimapangitsa m'malo mwa magulu a hydroxyl (-OH) pamsana wa cellulose ndi magulu a carboxymethyl (-CH2COOH).
Digiri ya m'malo (DS) mu CMC imatanthawuza kuchuluka kwamagulu a carboxymethyl pagawo la shuga mu unyolo wa cellulose.Izi chizindikiro chimatsimikizira katundu wa CMC, kuphatikizapo solubility, mamasukidwe akayendedwe, ndi khalidwe rheological.
Methylcellulose (MC):
MC imapangidwa polowa m'malo mwa magulu a hydroxyl mu cellulose ndi magulu a methyl (-CH3) kudzera mu etherification.
Mofanana ndi CMC, katundu wa MC amakhudzidwa ndi kuchuluka kwa m'malo, komwe kumatsimikizira kukula kwa methylation pamodzi ndi unyolo wa cellulose.
2.Kusungunuka:
Carboxymethylcellulose (CMC):
CMC imasungunuka m'madzi ndipo imapanga njira zowonekera, zowoneka bwino.
Kusungunuka kwake kumadalira pH, ndi kusungunuka kwakukulu m'zinthu zamchere.
Methylcellulose (MC):
MC imasungunukanso m'madzi, koma kusungunuka kwake kumadalira kutentha.
Ikasungunuka m'madzi ozizira, MC imapanga gel osakaniza, yomwe imasungunuka ikatenthedwa.Katunduyu amapangitsa kuti ikhale yoyenera kugwiritsa ntchito zomwe zimafunikira kuwongolera ma gelation.
3.Viscosity:
CMC:
Imawonetsa mamasukidwe apamwamba mu njira zamadzimadzi, zomwe zimathandizira kukulitsa kwake.
Kukhuthala kwake kumatha kusinthidwa ndikusintha zinthu monga ndende, kuchuluka kwa m'malo, ndi pH.
MC:
Imawonetsa kukhuthala kofanana ndi CMC koma nthawi zambiri imakhala yocheperako.
Kukhuthala kwa mayankho a MC kumatha kuwongoleredwa ndikusintha magawo monga kutentha ndi kukhazikika.
4.Kupanga Mafilimu:
CMC:
Amapanga mafilimu omveka bwino, osinthika akachotsedwa kuchokera kumadzi ake.
Makanemawa amapeza ntchito m'mafakitale monga kulongedza zakudya ndi mankhwala.
MC:
Komanso amatha kupanga mafilimu koma amakhala osalimba kwambiri poyerekeza ndi makanema a CMC.
5. Makampani a Chakudya:
CMC:
Amagwiritsidwa ntchito kwambiri ngati stabilizer, thickener, ndi emulsifier muzakudya monga ayisikilimu, sauces, ndi mavalidwe.
Kutha kwake kusintha kapangidwe kake ndi kamvekedwe ka mkamwa ka zakudya kumapangitsa kukhala kofunikira pakupanga zakudya.
MC:
Amagwiritsidwa ntchito pazifukwa zofananira ndi CMC muzakudya, makamaka pamapulogalamu omwe amafunikira kupanga ndi kukhazikika kwa gel.
6. Mankhwala:
CMC:
Amagwiritsidwa ntchito m'mapangidwe amankhwala ngati chophatikizira, chophatikizira, komanso mawonekedwe a viscosity popanga mapiritsi.
Amagwiritsidwanso ntchito m'mapangidwe apakhungu monga zonona ndi ma gels chifukwa cha rheological properties.
MC:
Amagwiritsidwa ntchito ngati thickener ndi gelling wothandizira muzamankhwala, makamaka mumankhwala amkamwa amadzimadzi ndi ophthalmic solutions.
7.Zinthu Zosamalira Munthu:
CMC:
Amapezeka m'zinthu zosiyanasiyana zosamalira anthu monga mankhwala otsukira mano, shampu, ndi mafuta odzola ngati stabilizer ndi thickening.
MC:
Amagwiritsidwa ntchito muzofanana ndi CMC, zomwe zimathandizira kukhazikika komanso kukhazikika kwazinthu zosamalira anthu.
8.Industrial Applications:
CMC:
Amagwiritsidwa ntchito m'mafakitale monga nsalu, mapepala, ndi zoumba chifukwa amatha kugwira ntchito ngati binder, rheology modifier, komanso wosunga madzi.
MC:
Amapeza ntchito muzomangamanga, utoto, ndi zomatira chifukwa cha kukhuthala kwake komanso kumangirira kwake.
pamene carboxymethylcellulose (CMC) ndi methylcellulose (MC) onse ndi zotuluka pa cellulose zomwe zimagwiritsidwa ntchito m'mafakitale osiyanasiyana, amawonetsa kusiyana kwa kapangidwe kake ka mankhwala, machitidwe osungunuka, mbiri yamakayendedwe, ndi ntchito.Kumvetsetsa kusiyanitsa kumeneku ndikofunikira posankha chotengera choyenera kuti chigwiritsidwe ntchito m'mafakitale osiyanasiyana, kuyambira pazakudya ndi zamankhwala mpaka pa chisamaliro chaumwini ndi ntchito zamakampani.Kaya ndi kufunikira kwa chokhuthala chosamva pH ngati CMC m'zakudya kapena chothandizira kutentha ngati MC pamapangidwe amankhwala, chotuluka chilichonse chimakhala ndi zabwino zomwe zimapangidwira m'magawo osiyanasiyana.
Nthawi yotumiza: Mar-22-2024