Polyanionic Cellulose (PAC) ndi Sodium Carboxymethyl Cellulose (CMC)

Polyanionic cellulose (PAC) ndi sodium carboxymethyl cellulose (CMC) onse ndi zotuluka pa cellulose zomwe zimagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana chifukwa chakukula kwawo, kukhazikika, komanso rheological properties. Ngakhale amagawana zofanana, amakhalanso ndi kusiyana kosiyana malinga ndi kapangidwe ka mankhwala, katundu, ndi ntchito. Nayi kufananitsa pakati pa PAC ndi CMC:

1. Kapangidwe ka Chemical:
   • PAC: Polyanionic cellulose ndi polima wosungunuka m'madzi wopangidwa kuchokera ku cellulose poyambitsa carboxymethyl ndi magulu ena anionic pamsana wa cellulose. Ili ndi magulu angapo a carboxyl (-COO-) motsatira unyolo wa cellulose, ndikupangitsa kuti ikhale ya anionic kwambiri.
   • CMC: Sodium carboxymethyl cellulose ndi polymer yosungunuka m'madzi yochokera ku cellulose, koma imakhala ndi njira inayake ya carboxymethylation, zomwe zimapangitsa m'malo mwa magulu a hydroxyl (-OH) ndi magulu a carboxymethyl (-CH2COONa). CMC nthawi zambiri imakhala ndi magulu ochepa a carboxyl poyerekeza ndi PAC.
2. Chikhalidwe cha Ionic:
   • PAC: Ma cellulose a Polyanionic ndi anionic kwambiri chifukwa chokhala ndi magulu angapo a carboxyl motsatira unyolo wa cellulose. Imawonetsa katundu wamphamvu wosinthanitsa ndi ion ndipo nthawi zambiri imagwiritsidwa ntchito ngati chowongolera kusefa komanso kusintha kwa rheology m'madzi obowola m'madzi.
   • CMC: Sodium carboxymethyl cellulose ndi anionic, koma digiri yake ya anionicity imadalira kuchuluka kwa m'malo (DS) kwamagulu a carboxymethyl. CMC imagwiritsidwa ntchito kwambiri ngati chowonjezera, chokhazikika, komanso chosinthira kukhuthala pamagwiritsidwe osiyanasiyana, kuphatikiza chakudya, mankhwala, ndi zinthu zosamalira anthu.
3. Viscosity ndi Rheology:
   • PAC: Ma cellulose a Polyanionic amawonetsa kukhuthala kwakukulu komanso kumeta ubweya wa ubweya mu njira yothetsera, kupangitsa kuti ikhale yogwira mtima ngati chowonjezera komanso chosinthira rheology pobowola madzi ndi ntchito zina zamafakitale. PAC imatha kupirira kutentha kwambiri komanso kuchuluka kwa mchere komwe kumakumana ndi ntchito zamafuta.
   • CMC: Sodium carboxymethyl cellulose imawonetsanso kukhuthala ndi kusinthika kwa rheology, koma kukhuthala kwake kumakhala kotsika poyerekeza ndi PAC. CMC imapanga njira zokhazikika komanso za pseudoplastic, zomwe zimapangitsa kuti zikhale zoyenera kugwiritsa ntchito zosiyanasiyana, kuphatikizapo chakudya, zodzoladzola, ndi mankhwala.
4. Mapulogalamu:
   • PAC: Polyanionic cellulose imagwiritsidwa ntchito makamaka m'makampani amafuta ndi gasi ngati chowongolera kusefera, rheology modifier, ndi chochepetsera kutaya kwamadzi mumadzi obowola. Amagwiritsidwanso ntchito m'mafakitale ena monga zida zomangira komanso kukonza chilengedwe.
   • CMC: Sodium carboxymethyl cellulose imakhala ndi ntchito zosiyanasiyana m'mafakitale osiyanasiyana, kuphatikiza chakudya ndi zakumwa (monga chowonjezera komanso chokhazikika), mankhwala (monga chomangira ndi kuphatikizira), zinthu zosamalira anthu (monga rheology modifier), nsalu (monga chopangira sizing) , ndi kupanga mapepala (monga zowonjezera mapepala).

pomwe onse a polyanionic cellulose (PAC) ndi sodium carboxymethyl cellulose (CMC) ndi zotumphukira za cellulose zomwe zimakhala ndi anionic komanso ntchito zofananira m'mafakitale ena, ali ndi kusiyana kosiyana malinga ndi kapangidwe ka mankhwala, katundu, ndi magwiridwe antchito. PAC imagwiritsidwa ntchito makamaka m'makampani amafuta ndi gasi, pomwe CMC imapeza ntchito zambiri pazakudya, zamankhwala, chisamaliro chamunthu, nsalu, ndi mafakitale ena.