Nigute ushobora kunoza amazi ya hydroxypropyl methylcellulose

Hydroxypropyl methylcellulose niyongerwaho cyane mumashanyarazi yumye. Ether ya selile ifite uruhare runini mumashanyarazi yumye. Nyuma ya selile ya selile muri minisiteri imaze gushonga, ibikorwa byubuso byemeza ko ibikoresho bya sima ari Sisitemu ikwirakwizwa neza, kandi ether ya selile, nka colloide ikingira, "ipfunyika" ibice bikomeye kandi ikora urwego rwa firime yo gusiga hanze. hejuru, gukora sisitemu ya minisiteri ihamye kandi itezimbere imigendekere ya minisiteri mugihe cyo kuvanga ibintu hamwe no kubaka neza.

Hydroxypropyl methylcellulose HPMC ifite amazi meza cyane, ashobora kubuza ubuhehere buri muri minisiteri itose guhumeka imburagihe cyangwa gutwarwa nigice cyibanze, kwemeza ko sima iba yuzuye neza, bityo amaherezo ikareba imiterere yubukorikori bwa minisiteri, ifite akamaro kanini cyane. Kuri buke buke Mortar na sisitemu ya base cyangwa minisiteri ikoreshwa mubushyuhe bwinshi kandi bwumutse. Ingaruka yo gufata amazi ya hydroxypropyl methylcellulose ether irashobora guhindura inzira gakondo yo kubaka no guteza imbere ubwubatsi. Kurugero, ubwubatsi bwo guhomesha burashobora gukorwa kumasoko akurura amazi atabanje gutose.

Ubukonje, urugero, ubushyuhe bwibidukikije hamwe na molekulire ya hydroxypropyl methylcellulose HPMC igira uruhare runini mubikorwa byo gufata amazi. Mubihe bimwe, uko ubwinshi bwa selulose ether, niko gufata amazi neza; hejuru ya dosiye, nibyiza kubika amazi. Mubisanzwe, selile nkeya ya selile irashobora guteza imbere cyane amazi ya minisiteri. Iyo dosiye igeze kuri runaka Iyo impamyabumenyi iri hejuru, igipimo cyo gufata amazi cyiyongera buhoro; iyo ubushyuhe bwibidukikije buzamutse, kubika amazi ya selile ya selile mubisanzwe bigabanuka, ariko ethers zimwe na zimwe zahinduwe na selile zifite amazi meza mugihe cy'ubushyuhe bwinshi; selile hamwe nurwego rwo hasi rwo gusimbuza Ether igumana amazi neza.

Itsinda rya hydroxyl kuri molekile ya HPMC na atome ya ogisijeni ku muyoboro wa ether bizahuza na molekile y’amazi kugira ngo bibe umurunga wa hydrogène, uhindure amazi yubusa amazi aboshye, bityo bigire uruhare runini mu gufata amazi; molekules zamazi na selulose Gutandukanya iminyururu ya ether molekuline ituma molekile zamazi zinjira imbere muminyururu minini ya selulose ether kandi bigakoreshwa nimbaraga zikomeye zihuza, bityo bigakora amazi yubusa namazi yiziritse, bigatuma amazi agumana ibyondo; selulose ether ituma amazi agumana imvange nshya Imiterere ya rheologiya, imiterere y'urusobekerane rwumuvuduko hamwe na osmotic yumuvuduko wa sima paste cyangwa imiterere ya firime ya selulose ether ibuza ikwirakwizwa ryamazi. Ariko rero, kubera imikorere idahwitse yo gufata amazi ya selile ya selile iriho ubu, minisiteri ifite ubufatanye buke n’imikorere mibi yo kubaka, kandi minisiteri ikunda gucika, gutoboka no kugwa nyuma yo kubaka.