Ko te Hydroxyethyl cellulose (HEC) me te hydroxypropyl methyl cellulose (HPMC) nga mea e rua e whakamahia nuitia ana.He waahanga o te whakapiri rapa ka taea te whakamahi ki te whakarato i te parenga, te whakanui ake i te pokey, ki te whakarato ductility ranei.He rite tonu te hanganga matū, engari he rereke nga rereketanga.
Ko te HEC he tairitenga ethylene-acetate kei roto te nuinga o te formaldehyde, methanol me te konutai waikawa.He tino thixotropic, a ka taea te whakamahi hei hinu hinu, hei rongoa maimoatanga mata me nga taapiri mo nga taputapu hiko me te ahumahi.Ka taea hoki te whakamahi i nga Hecs hei whakamatao, hei whakamararatanga me te aukati tauine.
Ko te HPMC tetahi atu tairitenga ethylene-acetate, te nuinga o te methanol, te konutai waikawa, me te warowaiha.He pokey teitei, he elasticity me te whakawhanui, ka taea te whakamahi hei whakapiri, hei peita, hei horoi me nga taapiri waituhi.I tua atu, ka taea hoki te whakamahi mo te whakarite karaihe me te pumau o te punaha maeneene.
Ko te Hydroxyethyl cellulose HEC, he katote-kore, he mea e whai ake nei i tua atu i te whakapakeke, te whakatārewatanga, te piri, te maanu, te hanga kiriata, te whakamararatanga, te pupuri wai me nga paanga colloidal whakamarumaru:
1, hydroxyethyl cellulose HEC ka taea te rewa i roto i te wai wera me te wai matao, te pāmahana teitei, te kohua ranei e kore e heke, na te mea he whanuitanga o te whakarewatanga me nga ahuatanga pokey, me nga rawa kore-wera;
2, hydroxyethyl cellulose HEC ano momo kore-katote ka taea te noho tahi me te whanuitanga o etahi atu polymers wairewa-wai, surfactants, tai, he ahua o te colloidal thickener kei roto i te otinga electrolyte teitei;
3, hydroxyethyl cellulose HEC kaha pupuri wai he rua teitei ake i te methyl cellulose, me te ture rere;
4. He iti te kaha marara o te hydroxyethyl cellulose HEC ki te whakataurite ki te methyl cellulose me te hydroxypropyl methyl cellulose, engari he kaha te tiaki o te kaha colloid.
Te kaupapa: I te nuinga o te waa ka whakamahia hei maataki whakamaarama, he maataki whakamarumaru, he whakapiri, he whakapumau me te whakarite i te peita taherapa, he waituhi, he mangumangu.Ko nga taapiri e whakamahia ana i roto i te keri hinu, te hinu, te hinu, te hinu, te whakamaarama kanohi, te suppositories me te papa, ka whakamahia ano he reera hydrophilic, rauemi koiwi, te whakarite i nga whakaritenga tuku totika, ka taea te whakamahi hei whakapumau i te kai.