Kusiyana Pakati pa CMC ndi MHEC

Carboxymethylcellulose (CMC) ndi Methyl hydroxyethyl cellulose (MHEC) ndi mitundu iwiri yodziwika bwino yochokera ku cellulose yomwe imagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana. Amagawana zofananira m'mapangidwe awo amthupi komanso mawonekedwe awo, koma amakhalanso ndi kusiyana kwakukulu komwe kumawapangitsa kukhala oyenera kugwiritsa ntchito mosiyanasiyana. M'nkhaniyi, tiwona kusiyana pakati pa CMC ndi MHEC.

Kapangidwe ka Chemical
Onse a CMC ndi MHEC ndizochokera ku cellulose zomwe ndi ma polima osungunuka m'madzi. CMC imachokera ku cellulose pochita ndi chloroacetic acid kuyambitsa magulu a carboxymethyl, pomwe MHEC imachokera ku cellulose pochita ndi ethylene oxide ndi methyl chloride kuyambitsa magulu a methyl ndi hydroxyethyl.

Kusungunuka
Kusiyanitsa kwakukulu pakati pa CMC ndi MHEC ndikusungunuka kwawo m'madzi. CMC imasungunuka kwambiri m'madzi ndipo imatha kupanga yankho lomveka bwino, lowoneka bwino ngakhale pamlingo wochepa. Mosiyana ndi zimenezi, MHEC imakhala yochepa kwambiri m'madzi kuposa CMC ndipo nthawi zambiri imafuna kugwiritsa ntchito zosungunulira, monga ethanol kapena isopropyl alcohol, kuti zisungunuke kwathunthu.

Viscosity
Onse a CMC ndi MHEC amatha kukulitsa njira zamadzimadzi ndikuwonjezera kukhuthala. Komabe, CMC ili ndi mamasukidwe apamwamba kuposa MHEC, ndipo imatha kupanga mawonekedwe owoneka 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. MHEC, kumbali ina, ili ndi mamasukidwe otsika kuposa CMC ndipo imagwiritsidwa ntchito ngati chowonjezera kapena rheology modifier pamagwiritsidwe pomwe njira yocheperako imafunikira.

pH Kukhazikika
CMC nthawi zambiri imakhala yokhazikika pamitundu yambiri ya pH kuposa MHEC. 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, MHEC imakhala yokhazikika m'malo a acidic pang'ono osalowerera ndale pH ndipo imatha kusweka pamitengo ya pH yapamwamba.

Kutentha Kukhazikika
Onse a CMC ndi MHEC ndi okhazikika pa kutentha kosiyanasiyana, koma pali kusiyana pakati pa kukhazikika kwawo kwa kutentha. CMC ndiyokhazikika kwambiri kuposa MHEC 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. MHEC, kumbali ina, imakhala ndi kutentha kochepa kuposa CMC ndipo imatha kusweka pa kutentha kwakukulu.

Mapulogalamu
Onse CMC ndi MHEC 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. MHEC 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.

Pomaliza, CMC ndi MHEC ndi zotuluka ziwiri za cellulose zomwe zimagawana zofanana mu kapangidwe kake ka mankhwala ndi zinthu zakuthupi koma zimakhala ndi kusiyana kosiyana pakusungunuka kwawo, kukhuthala, kukhazikika kwa pH, kukhazikika kwa kutentha, ndi ntchito.