Yenziwa ngantoni ihydroxypropyl methylcellulose?

IHydroxypropyl methylcellulose (HPMC) yipolymer eyenziweyo, enyibilikayo emanzini ephuma kwiselulosi.Ngumgubo omhlophe, ongenavumba, ongenancasa osetyenziswa ngokubanzi njenge-agent ejiyayo, 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 ngepropylene 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.