Methylcellulose ni umweru cyangwa ifu ya fibrous cyangwa ifu ya granular;impumuro nziza kandi itaryoshye.Iki gicuruzwa cyabyimbye mumazi asobanutse cyangwa yoroheje ya colloidal mumazi;ntishobora gukemuka muri Ethanol yuzuye, chloroform cyangwa ether.Kwirakwiza vuba no kubyimba mumazi ashyushye kuri 80-90 ° C, hanyuma ushonga vuba nyuma yo gukonja.Umuti wamazi urahagaze neza mubushyuhe bwicyumba, kandi urashobora kuza mubushyuhe bwinshi, kandi gel irashobora guhinduka hamwe nigisubizo hamwe nubushyuhe.
Ifite ubuhehere buhebuje, gutatanya, gufatana, kubyimba, emulisile, gufata amazi hamwe no gukora firime, hamwe no kudashobora amavuta.Filime yakozwe ifite ubukana buhebuje, guhinduka no gukorera mu mucyo.Kuberako itari ionic, irashobora guhuzwa nizindi emulisiferi, ariko biroroshye gushiramo umunyu, kandi igisubizo gihamye murwego rwa PH2-12.Sodium Carboxymethyl Cellulose Iki gicuruzwa ni umunyu wa sodium ya selulose carboxymethyl ether, ikaba ari anionic selulose ether, ifu yera cyangwa amata ya fibrous yera cyangwa granules, ifite ubucucike bwa 0.5-0.7 g / cm3, hafi yumunuko kandi utaryoshye, hamwe na hygroscopicity.Byoroshye gutatanya mumazi kugirango bibe igisubizo kiboneye cya colloidal, kidashonga mumashanyarazi kama nka Ethanol.
PH yumuti wamazi ni 6.5-8.5.Iyo pH ari> 10 cyangwa <5, ubukonje bwa kole buzagabanuka cyane, kandi imikorere nibyiza mugihe pH ari 7. Ihamye kugirango ubushyuhe, ubukonje buzamuka vuba munsi ya 20 ° C, kandi buhinduka buhoro kuri 45 ° C.Gushyushya igihe kirekire hejuru ya 80 ° C birashobora gutandukanya colloid kandi bikagabanya cyane ububobere n'imikorere.Biroroshye gushonga mumazi, kandi igisubizo kiragaragara;irahagaze neza mumuti wa alkaline, ariko iroroshye hydrolyz mugihe ihuye na aside, kandi izagwa mugihe agaciro ka pH ari 2-3, kandi izanakorana numunyu wibyuma bya polyvalent.Hydroxypropyl methylcellulose, izwi kandi nka hypromellose na selulose hydroxypropyl methyl ether, ikozwe mu ipamba rya selile nziza cyane nk'ibikoresho fatizo, bigashyirwa mu buryo bwihariye mu bihe bya alkaline.
Gushonga mumazi hamwe na polar nyinshi c hamwe nuburinganire bukwiye bwa Ethanol / amazi, propanol / amazi, dichloroethane, nibindi, bidashonga muri ether, acetone, etanol yuzuye, kandi ikabyimba muri colloid isobanutse cyangwa igicu gike mumazi akonje.Igisubizo cyamazi gifite ibikorwa byubuso, gukorera mu mucyo no gukora neza.HPMC ifite umutungo wa gelasique.Igicuruzwa cyamazi yo mumazi arashyuha kugirango akore gel hanyuma agwe, hanyuma ashonga nyuma yo gukonja.Ubushyuhe bwa gelation bwibisobanuro bitandukanye buratandukanye.
Igihe cyo kohereza: Gashyantare-24-2023