Itandukaniro muri Physicochemical Properties ya HPMC na HEMC

Ubushyuhe bwa gel ni ikimenyetso cyingenzi cya selile. Amazi yo mumazi ya selile ya selile afite imiterere ya thermogelling. Mugihe ubushyuhe bwiyongera, ubukonje bukomeza kugabanuka. Iyo ubushyuhe bwibisubizo bugeze ku gaciro runaka, selile ya ether igisubizo ntigikiboneka, ahubwo ikora colloid yera, amaherezo ikabura ubwiza bwayo. Ikizamini cy'ubushyuhe bwa gel bivuga gutangiza urugero rwa selulose ether hamwe na 0.2% yibisubizo bya selulose ether hanyuma ukabishyushya buhoro mu bwogero bwamazi kugeza igisubizo kiboneka cyera cyangwa se cyera, kandi viscosity yabuze burundu. Ubushyuhe bwumuti nubushyuhe bwa gel ya selile ether.

Ikigereranyo cya mikorerexy, hydroxypropyl na HPMC gifite uruhare runini mukubona amazi, ubushobozi bwo gufata amazi, ibikorwa byubuso hamwe nubushyuhe bwa geli yibicuruzwa. Muri rusange, HPMC ifite vitamine nyinshi hamwe na hydroxypropyl nkeya ifite amazi meza kandi ikora neza, ariko ubushyuhe bwa gel buri hasi: kongera hydroxypropyl no kugabanya ibirimo mikorobe bishobora kongera ubushyuhe bwa gel. Nyamara, hydroxypropyl iri hejuru cyane izagabanya ubushyuhe bwa gel, imbaraga zamazi hamwe nibikorwa byubutaka. Kubwibyo, uruganda rwa selulose ether rugomba kugenzura neza ibiri mumatsinda kugirango ibicuruzwa bihamye.

Inganda zubaka

HPMC na HEMC bafite imirimo isa nibikoresho byubaka. Irashobora gukoreshwa nka dispersant, agent igumana amazi, kubyimbye, guhuza, nibindi. Ikoreshwa muri sima ya sima kugirango yongere ubumwe kandi ikore, igabanye flocculation, yongere ububobere no kugabanuka, kandi ifite imirimo yo gufata amazi, kugabanya igihombo cyamazi hejuru ya beto, kongera imbaraga, gukumira ibice ndetse nikirere cyumunyu ushonga amazi, n'ibindi bikoreshwa cyane muri sima, gypsumu, minisiteri nibindi bikoresho. Irashobora gukoreshwa nkibikorwa byo gukora firime, kubyimbye, emulisiferi na stabilisateur kumarangi ya latx hamwe n irangi ryamazi ya resin. Ifite imyambarire myiza yo kwambara, guhuza no gufatana hamwe, itezimbere uburinganire bwubutaka, aside-ishingiro ihamye hamwe no guhuza ibyuma byuma. Bitewe nuburyo bwiza bwo kubika neza, birakwiriye cyane nkikwirakwiza muri emulsion. Byose muri byose, nubwo sisitemu ari nto, ikora neza kandi ifite intera nini ya porogaramu.

Ubushyuhe bwa gel ya selile ether igena ituze ryumuriro mubikorwa. Ubushyuhe bwa gel bwa HPMC mubusanzwe buri hagati ya 60 ° C na 75 ° C, bitewe n'ubwoko, ibirimo mumatsinda hamwe nuburyo bwo gukora ibicuruzwa bitandukanye. Bitewe n'ibiranga itsinda rya HEMC, ubushyuhe bwa gelation buri hejuru cyane, ubusanzwe hejuru ya 80 ° C, bityo guhagarara kwayo mubushyuhe bwinshi biterwa na HPMC. Mubikorwa bifatika, mubihe bishyushye byubaka, ubushyuhe bwo gufata amazi ya HEMC hamwe nubwiza bumwe na dosiye nibyiza kuruta ibya HPMC. Cyane cyane mu majyepfo, minisiteri rimwe na rimwe ikoreshwa mubushyuhe bwinshi. Ether ya selile ya selile yubushyuhe buke izatakaza ingaruka zayo zo kugumana no kugumana amazi mubushyuhe bwinshi, bityo byihutishe gukomera kwa sima kandi bigira ingaruka muburyo bwubaka no guhangana.

Kuberako hari amatsinda menshi ya hydrophilique mumiterere ya HEMC, ifite hydrophilicity nziza. Mubyongeyeho, vertical flow resistance ya HEMC nayo ni nziza. Ingaruka ya porogaramu ya HPMC muri tile yometseho izaba nziza.