Kodi pali kusiyana kotani pakati pa hydroxypropyl methylcellulose ndi hydroxethyl cellulose?

Hydroxypropylmethmethcellulose (hpmc) ndi hydroxyellulose (Hec) ndi mitundu iwiri yodziwika bwino ya celulouse yomwe imagwiritsidwa ntchito m'mafakitale ambiri. Ngakhale amagawana zofanana, palinso zosiyana zambiri, kuphatikizapo kapangidwe kake, katundu wathupi, ndi ntchito.

kapangidwe ka mankhwala

Kusiyana kwakukulu pakati pa HPMC ndi Hec ndi kapangidwe kawo. HPMC ndi polic yopanga polymer yopangidwa ndi ma cellulose ndi ma propelyne oxide ndi methyl chloride. Njirayi imatulutsa ma politymers omwe ali ndi hydrophilic ndi lipophilic, ndikuwapanga iwo omwe amapezeka m'mafakitale ambiri, kuphatikiza chisamaliro chaumwini komanso mankhwala.

Msuzi, kumbali inayo, ndi biopolymer ochokera ku cellulose. Imapangidwa ndi zomwe wapasintha cellulose ndi ethylene oxide, yomwe imakhala ndi ma hydroxyethyl magulu pa mamona a cellulose. Izi zimapanga zosungunulira-kusungunuka ndi polymer yabwino kwambiri komanso zopatsa thanzi, zomwe zimapangitsa kuti zikhale zoyenera kugwiritsa ntchito mitundu yambiri.

katundu wathupi

HPMC ndi HeC ili ndi zinthu zosiyana zakuthupi chifukwa cha mitundu yawo yosiyanasiyana ya mankhwala. Mwachitsanzo, HPMC ndiyabwino kwambiri hydrophobic kuposa hec, zomwe zikutanthauza kuti imasungunuka m'madzi. Chifukwa chake, hpmc nthawi zambiri imagwiritsidwa ntchito ngati chokhazikika komanso emulsifier mu zinthu zopangidwa ndi mafuta monga zonona ndi zotupa. Msuzi, kumbali inayo, amasungunuka kwambiri m'madzi ndipo nthawi zambiri amagwiritsidwa ntchito ngati thickiner ndi othandizila othandizira.

Katundu wina wakuthupi wa HPMC ndi Hec ndiye akumbuka. Hec ali ndi mawonekedwe apamwamba kuposa hpmc, zomwe zikutanthauza kuti ndizothandiza pakutha kwamitundu ndikupanga ma gels. Katunduyu amapangitsa kuti akhale wabwino kuti azigwiritsa ntchito poizoni ndi zowonjezera, zomata, ndi zinthu zina zomwe zimafuna kapangidwe kazinthu yolumikizana.

Madera Ogwiritsa Ntchito

HPMC ndi HeC imagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana. HPMC imagwiritsidwa ntchito popanga mafakitale a mankhwala ngati atsamikiro, zokutira, ndi njira zoperekera mankhwala osokoneza bongo. Amagwiritsidwanso ntchito ngati thiccener ndi emulsifier mu zinthu zomwe zimasamalira shampoos, sopo ndi zodzola. HPMC imagwiritsidwanso ntchito ngati chakudya chowonjezera komanso popanga mapepala.

Msuzi, nthawi ina, nthawi zambiri amagwiritsidwa ntchito ngati thicker ndi wothandizila m'malo osiyanasiyana. Pa utoto ndi zokutira, Hec imagwiritsidwa ntchito ngati thickisir, Rhelogy osintha komanso othandizira. Amagwiritsidwanso ntchito ngati wothandizila madzi popanga zomanga ndi popanga zomata, zolembedwa ndi ma simeramic.

HPMC ndi Hec ndi ma cellulose awiri omwe ali ndi mitundu yosiyanasiyana yamankhwala, zinthu zakuthupi. HPMC ndiyabwino kwambiri hydrophobic ndipo imagwiritsidwa ntchito mu mafakitale osiyanasiyana, pomwe Hec ndiosungunuka kwambiri ndi njira zambiri zothetsera mavuto am'madzi ndikupanga ma gels. Ndikofunikira kumvetsetsa kusiyana pakati pa ma cellulose a cellulose posankha cholembera choyenera kuti mupeze pulogalamu inayake.