Kodi pali kusiyana kotani pakati pa HPMC ndi HEMC?

HPMC (Hydroxypropyl Methylcellulose) ndi HEMC (Hydroxyethyl Methylcellulose) onse ndi zotuluka pa cellulose zomwe zimagwiritsidwa ntchito ngati thickeners, binders, ndi emulsifiers muzinthu zosiyanasiyana. Onsewa amachokera ku cellulose, polysaccharide yachilengedwe yomwe imapezeka muzomera.

Kusiyana kwakukulu pakati pa HPMC ndi HEMC ndi mtundu wa hydroxypropyl ndi magulu a hydroxyethyl omwe amamangiriridwa ku molekyulu ya cellulose. HPMC ili ndi magulu a hydroxypropyl omwe amamangiriridwa ku molekyulu ya cellulose, pomwe HEMC ili ndi magulu a hydroxyethyl. Kusiyana kumeneku kwa mtundu wa magulu a hydroxypropyl ndi hydroxyethyl kumakhudza zinthu zamitundu iwiri ya cellulose.

HPMC imasungunuka m'madzi ozizira kuposa HEMC, ndipo imagonjetsedwa ndi kusintha kwa kutentha. Ili ndi mamasukidwe apamwamba kuposa HEMC, ndipo imalimbana kwambiri ndi asidi ndi alkali. Komanso imalimbana kwambiri ndi kuwonongeka kwa tizilombo. HPMC imagwiritsidwa ntchito pazinthu zosiyanasiyana, kuphatikizapo chakudya, mankhwala, ndi zodzoladzola.

HEMC imasungunuka pang'ono m'madzi ozizira kuposa HPMC, ndipo imagonjetsedwa ndi kusintha kwa kutentha. Ili ndi mamasukidwe otsika kuposa HPMC, ndipo imakhala yochepa kugonjetsedwa ndi asidi ndi alkali. Imakhalanso yochepa kugonjetsedwa ndi kuwonongeka kwa tizilombo toyambitsa matenda. HEMC imagwiritsidwa ntchito pazinthu zosiyanasiyana, kuphatikizapo zakudya, mankhwala, ndi zodzoladzola.

Mwachidule, HPMC ndi HEMC onse ndi zotuluka pa cellulose zomwe zimagwiritsidwa ntchito ngati zokhuthala, zomangira, ndi zopangira ma emulsifiers muzinthu zosiyanasiyana. Kusiyana kwakukulu pakati pa awiriwa ndi mtundu wa magulu a hydroxypropyl ndi hydroxyethyl omwe amamangiriridwa ku molekyulu ya cellulose. HPMC ili ndi magulu a hydroxypropyl omwe amamangiriridwa ku molekyulu ya cellulose, pomwe HEMC ili ndi magulu a hydroxyethyl. Kusiyana kumeneku kwa mtundu wa magulu a hydroxypropyl ndi hydroxyethyl kumakhudza momwe zinthu ziwirizi zimapangidwira pa cellulose.