Hydroxypropyl methyl selulose na sodium ya carboxymethyl selile irashobora kuvangwa

Urashobora HPMC na CMC kuvanga

Methyl selulose ni umweru cyangwa umweru nka fibrous cyangwa ifu ya granular;Impumuro nziza, uburyohe.Iki gicuruzwa mumazi yabyimbye mubisubizo bisobanutse cyangwa bitobito bya colloidal;Kudashonga muri Ethanol yuzuye, chloroform cyangwa diethyl ether.Iratatana vuba kandi ikabyimba mumazi ashyushye kuri 80-90 and, kandi igashonga vuba nyuma yo gukonja.Umuti wamazi urahagaze neza mubushyuhe bwicyumba, kandi urashobora kuza mubushyuhe bwinshi, kandi gel irashobora guhinduka hamwe nigisubizo hamwe nubushyuhe.

Ifite ubushuhe buhebuje, gutatanya, gufatira hamwe, kubyimba, emulisile, kubika amazi no gukora firime, ndetse no kutanyunyuza amavuta.Filime ifite ubukana buhebuje, guhinduka no gukorera mu mucyo.Kubera ko itari ionic, irashobora guhuzwa nizindi emulisiferi, ariko biroroshye gushiramo umunyu, kandi igisubizo gihamye murwego rwa PH2 - 12. Sodium carboxymethyl selulose Iki gicuruzwa numunyu wa sodium ya selulose carboxymethyl ether, ni iyitwa anionic selulose ether, ni ifu yera cyangwa amata yifu ya fibrous yera cyangwa ibice, ubucucike bwa santimetero 0,5-0,7 g / cubic, hafi yumunuko, uburyohe, hygroscopique.Biroroshye gukwirakwiza mumazi mubisubizo bya gelatinous bisobanutse, bidashonga muri Ethanol hamwe nandi mashanyarazi.

Iyo pH yumuti wamazi ari 6.5 - 8.5, ubwiza bwibisebe bugabanuka cyane mugihe pH ari> 10 cyangwa <5, kandi imikorere nibyiza mugihe pH ari 7. Kubijyanye nubushyuhe bwumuriro, ubukonje buzamuka vuba munsi 20 changes, ihinduka gahoro gahoro kuri 45 ℃, kandi gutandukana kwa colloid hamwe nubwiza bwumutungo bigabanuka cyane iyo bishyushye igihe kirekire hejuru ya 80 ℃.Byoroshye gushonga mumazi, igisubizo kiboneye;Irahagaze neza mubisubizo bya alkaline, kandi byoroshye hydrolyze mugihe cya aside.Iyo pH agaciro ari 2-3, imvura izabaho, kandi imvura nayo izabaho mugihe cyumunyu wibyuma byinshi.Hydroxypropyl methyl selulose, izwi kandi nka hydroxypropyl methyl selulose, selulose hydroxypropyl methyl ether, ni ugutoranya selulose yipamba nziza cyane nkibikoresho fatizo, mubihe bya alkaline hakoreshejwe etherifike idasanzwe no kuyitegura.

Gushonga mumazi hamwe na polar C nyinshi hamwe nigipimo gikwiye cya Ethanol / amazi, propanol / amazi, dichloroethane, nibindi, kutangirika muri diethyl ether, acetone, etanol yuzuye, kubyimba mumazi akonje mubisubizo bisobanutse cyangwa byoroheje gato bya colloidal.Igisubizo cyamazi gifite ibikorwa byubuso, gukorera mu mucyo no gukora neza.HPMC ifite umutungo wa gel ishyushye.Nyuma yo gushyushya, igisubizo cyamazi yo mumazi akora imvura ya gel, hanyuma igashonga nyuma yo gukonja.Ubushyuhe bwa gel bwibisobanuro bitandukanye buratandukanye.