Kusiyana Pakati pa CMC ndi HEMC

Carboxymethylcellulose (CMC) ndi Hydroxyethyl methylcellulose (HEMC) ndi mitundu iwiri yochokera ku cellulose yomwe imagwiritsidwa ntchito m'mafakitale osiyanasiyana, kuphatikiza mafakitale azakudya ndi mankhwala. Onse a CMC ndi HEMC ndi ma polima osungunuka m'madzi omwe amachokera ku cellulose, koma ali ndi zinthu zosiyanasiyana ndipo amagwiritsidwa ntchito mosiyanasiyana. M'nkhaniyi, tiwona kusiyana pakati pa CMC ndi HEMC.

Kapangidwe ka Chemical
Mapangidwe a mankhwala a CMC ndi HEMC ndi ofanana, chifukwa onsewa ndi ochokera ku cellulose. CMC imapangidwa pochita ma cellulose ndi chloroacetic acid kuti apange magulu a carboxymethyl, pomwe HEMC imapangidwa pochita ma cellulose ndi ethylene oxide ndi methyl chloride kuti apange magulu a hydroxyethyl ndi methyl.

Kusungunuka
Chimodzi mwa kusiyana kwakukulu pakati pa CMC ndi HEMC ndi kusungunuka kwawo m'madzi. CMC imasungunuka kwambiri m'madzi ndipo imatha kupanga yankho lomveka bwino, lowoneka bwino ngakhale pamlingo wochepa. Mosiyana ndi izi, HEMC sisungunuka m'madzi kuposa CMC ndipo imafuna kugwiritsa ntchito zosungunulira, monga ethanol kapena isopropyl alcohol, kuti zisungunuke kwathunthu.

Viscosity
Kusiyana kwina kwakukulu pakati pa CMC ndi HEMC ndi kukhuthala kwawo. CMC imakhala yowoneka bwino kwambiri ndipo imatha kupanga yankho lakuda ngati gel ikasungunuka m'madzi. Izi zimapangitsa CMC kukhala yabwino kuti igwiritsidwe ntchito popanga makulidwe kapena gelling, monga m'makampani azakudya popanga sosi ndi zovala. Mosiyana ndi izi, HEMC ili ndi mamasukidwe otsika kuposa CMC ndipo imagwiritsidwa ntchito ngati thickener kapena rheology modifier m'mapulogalamu omwe njira yocheperako imafunikira.

pH Kukhazikika
CMC nthawi zambiri imakhala yokhazikika pamitundu yambiri ya pH kuposa HEMC. CMC ndi yokhazikika m'malo a acidic komanso amchere, zomwe zimapangitsa kuti zikhale zoyenera kugwiritsidwa ntchito m'makampani azakudya, pomwe ma pH amatha kusiyanasiyana. Mosiyana ndi izi, HEMC imakhala yokhazikika m'malo a acidic pang'ono mpaka osalowerera ndale pH ndipo imatha kusweka pamitengo yapamwamba ya pH.

Kutentha Kukhazikika
Onse a CMC ndi HEMC ndi okhazikika pa kutentha kosiyanasiyana, koma pali kusiyana pakati pa kukhazikika kwawo kwa kutentha. CMC ndiyokhazikika kwambiri kuposa HEMC ndipo imatha kusunga katundu wake pakutentha kwambiri. Izi zimapangitsa CMC kukhala yabwino kuti igwiritsidwe ntchito m'malo omwe kutentha kwambiri kumakhudzidwa, monga kupanga zinthu zophika. HEMC, kumbali ina, imakhala ndi kutentha kwapakati kuposa CMC ndipo imatha kusweka pa kutentha kwakukulu.

Mapulogalamu
Onse CMC ndi HEMC amagwiritsidwa ntchito zosiyanasiyana m'mafakitale osiyanasiyana. CMC imagwiritsidwa ntchito ngati thickener, stabilizer, ndi emulsifier mumakampani azakudya pazinthu monga ayisikilimu, sauces, ndi zovala. Amagwiritsidwanso ntchito m'makampani opanga mankhwala ngati binder, disintegrant, komanso kuyimitsa. HEMC imagwiritsidwa ntchito ngati chowonjezera, chomangira, komanso chosinthira rheology pantchito yomanga pazinthu monga utoto, zokutira, ndi zomatira. Amagwiritsidwanso ntchito m'makampani opanga mankhwala ngati chomangira, chosokoneza, komanso chotulutsa nthawi zonse.