Yenziwa ngantoni ihydroxypropyl methylcellulose?

IHydroxypropyl methylcellulose (HPMC) yipolymer eyenziweyo, enyibilikayo emanzini ephuma kwiselulosi. Ngumgubo omhlophe, ongenavumba, ongenancasa osetyenziswa ngokubanzi njengearhente etyebisayo, i-emulsifier, ifilimu yangaphambili, kunye ne-stabilizer kumashishini amaninzi, kubandakanya amayeza, ukutya, izithambiso kunye nokwakha.

I-HPMC yenziwe ngokusabela kwiselulosi kunye nepropylene oxide kunye nemethyl chloride. I-Cellulose yi-polysaccharide eyona nto iphambili kwiindonga zeeseli zesityalo kwaye iyona nto ininzi kakhulu emhlabeni. Ipropylene oxide yi-organic compound kunye ne-chemical formula CH3CHCH2O. I-Methyl chloride yigesi engenambala, enokutsha kunye nevumba elimnandi.

Ukusabela kwe-cellulose kunye nepropylene oxide kunye ne-methyl chloride kubangela ukubunjwa kwamaqela e-hydroxypropyl, afakwe kwii-molecule ze-cellulose. Le nkqubo yaziwa ngokuba yi-hydroxypropylation. Amaqela e-hydroxypropyl anyusa ukunyibilika kwe-cellulose emanzini, okwenza kube lula ukuyisebenzisa kwiinkqubo ezahlukeneyo.

I-HPMC isetyenziswa ngokubanzi kushishino loxubo-mayeza njenge-binder, i-disintegrant, kunye ne-arhente yokuxhoma kwiipilisi kunye ne-capsules. Ikwasetyenziswa njenge-thickener kunye ne-emulsifier kwi-creams kunye ne-lotions, kwaye njengefilimu yangaphambili kumathontsi esweni. Kwishishini lokutya, isetyenziswa njenge-thickener, stabilizer, kunye ne-emulsifier kwiisosi, izinxibo, kunye nezinye iimveliso zokutya. Kwishishini lokwakha, isetyenziswe njenge-binder kwi-samente kunye nodaka, kwaye njengento yokukhusela amanzi kwiindonga kunye nemigangatho.

I-HPMC sisixhobo esikhuselekileyo nesingenatyhefu esivunywe yi-US Food and Drug Administration (FDA) ukuze sisetyenziswe ekutyeni, kumayeza, nakwizithambiso. Ikwavunyiwe yiManyano yaseYurophu (EU) ukuba isetyenziswe ekutyeni nakumayeza.