Carboxymethylcellulose (CMC) ndi methylcellulose (MC) zonse ndi zochokera ku cellulose, polima wachilengedwe womwe umapezeka m'makoma a maselo a zomera. Zochokera izi zimagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana chifukwa cha mawonekedwe awo apadera. Ngakhale kuti ali ofanana, CMC ndi MC ali ndi kusiyana kwakukulu mu kapangidwe ka mankhwala, mawonekedwe, ntchito, ndi ntchito zamafakitale.
1. Kapangidwe ka mankhwala:
Carboxymethylcellulose (CMC):
CMC imapangidwa ndi etherification ya cellulose ndi chloroacetic acid, zomwe zimapangitsa kuti magulu a hydroxyl (-OH) asinthidwe pa msana wa cellulose ndi magulu a carboxymethyl (-CH2COOH).
Mlingo wa kusintha (DS) mu CMC umatanthauza kuchuluka kwa magulu a carboxymethyl pa unit iliyonse ya shuga mu unyolo wa cellulose. Izi zimatsimikizira makhalidwe a CMC, kuphatikizapo kusungunuka, kukhuthala, ndi khalidwe la rheological.
Methylcellulose (MC):
MC imapangidwa mwa kusintha magulu a hydroxyl mu cellulose ndi magulu a methyl (-CH3) kudzera mu etherification.
Mofanana ndi CMC, makhalidwe a MC amakhudzidwa ndi kuchuluka kwa kusintha, komwe kumatsimikiza kuchuluka kwa methylation mu unyolo wa cellulose.
2. Kusungunuka:
Carboxymethylcellulose (CMC):
CMC imasungunuka m'madzi ndipo imapanga njira zowonekera komanso zokhuthala.
Kusungunuka kwake kumadalira pH, ndipo kusungunuka kwake kumakhala kwakukulu m'malo okhala ndi alkaline.
Methylcellulose (MC):
MC imasungunukanso m'madzi, koma kusungunuka kwake kumadalira kutentha.
Ikasungunuka m'madzi ozizira, MC imapanga jeli, yomwe imasungunuka ikatenthedwa. Izi zimapangitsa kuti ikhale yoyenera kugwiritsidwa ntchito pofunikira jeli yoyendetsedwa bwino.
3. Kukhuthala:
CMC:
Imaonetsa kukhuthala kwakukulu mu njira zamadzimadzi, zomwe zimathandiza kuti ikhale yokhuthala.
Kukhuthala kwake kungasinthidwe posintha zinthu monga kuchuluka kwa madzi, kuchuluka kwa madzi olowa m'malo mwake, ndi pH.
MC:
Imaonetsa kachitidwe ka kukhuthala kofanana ndi CMC koma nthawi zambiri imakhala yokhuthala pang'ono.
Kukhuthala kwa njira za MC kungawongoleredwenso mwa kusintha magawo monga kutentha ndi kuchuluka.
4. Kupanga Mafilimu:
CMC:
Amapanga mafilimu owoneka bwino komanso osinthasintha akapangidwa kuchokera ku madzi ake.
Makanema awa amagwiritsidwa ntchito m'mafakitale monga ma phukusi a chakudya ndi mankhwala.
MC:
Komanso imatha kupanga mafilimu koma imakhala yofooka kwambiri poyerekeza ndi mafilimu a CMC.
5. Makampani Ogulitsa Zakudya:
CMC:
Amagwiritsidwa ntchito kwambiri ngati chokhazikika, chokhuthala, komanso chosakaniza mu zakudya monga ayisikilimu, sosi, ndi zosakaniza.
Kutha kwake kusintha kapangidwe ka chakudya ndi momwe chimamvekera pakamwa pake kumapangitsa kuti chikhale chofunikira kwambiri mu zakudya.
MC:
Amagwiritsidwa ntchito mofanana ndi CMC muzakudya, makamaka pogwiritsira ntchito gel yopangira ndi kukhazikika.
6. Mankhwala:
CMC:
Amagwiritsidwa ntchito popanga mankhwala ngati chomangira, chosungunula, komanso chosinthira kukhuthala popanga mapiritsi.
Amagwiritsidwanso ntchito popanga mankhwala monga mafuta ndi ma gels chifukwa cha mphamvu zake za rheological.
MC:
Amagwiritsidwa ntchito kwambiri ngati chowonjezera komanso chowonjezera mafuta m'mafakitale, makamaka m'mankhwala amadzimadzi omwa ndi m'maso.
7. Zogulitsa Zosamalira Munthu:
CMC:
Amapezeka mu zinthu zosiyanasiyana zosamalira thupi monga mankhwala otsukira mano, shampu, ndi mafuta odzola monga chokhazikika komanso chokhuthala.
MC:
Amagwiritsidwa ntchito mofanana ndi CMC, zomwe zimathandiza kuti kapangidwe kake kakhale kolimba komanso kokhazikika kwa mankhwala osamalira munthu payekha.
8. Ntchito Zamakampani:
CMC:
Amagwira ntchito m'mafakitale monga nsalu, mapepala, ndi zoumba chifukwa cha luso lake logwira ntchito ngati chomangira, chosinthira rheology, komanso chosungira madzi.
MC:
Amagwiritsidwa ntchito popanga zinthu zomangira, utoto, ndi zomatira chifukwa cha kukhuthala kwake komanso kumangirira.
pomwe carboxymethylcellulose (CMC) ndi methylcellulose (MC) zonse ndi zinthu zochokera ku cellulose zomwe zimagwiritsidwa ntchito m'mafakitale osiyanasiyana, zimasiyana kapangidwe ka mankhwala, momwe zimasungunulira, mawonekedwe a viscosity, ndi momwe zimagwiritsidwira ntchito. Kumvetsetsa kusiyana kumeneku ndikofunikira kwambiri posankha zinthu zoyenera kugwiritsidwa ntchito m'mafakitale osiyanasiyana, kuyambira chakudya ndi mankhwala mpaka chisamaliro chaumwini ndi ntchito zamafakitale. Kaya ndi kufunikira kwa chokhuthala chodziwika bwino cha pH monga CMC muzakudya kapena chothandizira kutentha monga MC mu mankhwala opangira mankhwala, chochokera chilichonse chimapereka zabwino zapadera zogwirizana ndi zofunikira zina m'magawo osiyanasiyana.
Nthawi yotumizira: Marichi-22-2024