Muri minisiteri yivanze, ingano ya hydroxypropyl methyl selulose HPMC iri hasi cyane, ariko irashobora kunoza cyane imikorere yimyunyu itose, ninyongera ikomeye igira ingaruka kumyubakire ya minisiteri.Ether ya selile ifite ububobere butandukanye hamwe n’amafaranga yongeweho bigira ingaruka nziza mugutezimbere imikorere ya minisiteri yumye.Kugeza ubu, amabuye menshi yo kubumba no guhomesha afite imiterere mibi yo gufata amazi, kandi gutandukana kwamazi bibaho nyuma yiminota mike uhagaze.Kubika amazi nigikorwa cyingenzi cya methyl selulose ether, kandi nigikorwa kandi n’abakora uruganda rwumye rwumye cyane cyane mu turere dufite ubushyuhe bwinshi mu majyepfo, bakitondera.Mu bintu bigira ingaruka ku gufata amazi ya minisiteri yumye harimo ingano ya HPMC yongeweho, ubwiza bwa HPMC, ubwiza bwibice hamwe nubushyuhe bwibidukikije bikoreshwa.
1. Igitekerezo: Cellulose ether ni sintetike yo hejuru ya molekile ya polymer ikozwe muri selile naturel binyuze muburyo bwo guhindura imiti.Cellulose ether ni inkomoko ya selile naturel.Umusaruro wa selulose ether uratandukanye na polymrike ya sintetike.Ibikoresho byibanze byingenzi ni selile, ibinyabuzima bisanzwe bya polymer.Bitewe nimiterere yihariye ya selile karemano, selile ubwayo ntabwo ifite ubushobozi bwo kubyitwaramo na etherifyinging.Ariko nyuma yo kuvura ibibyimba bimaze kuvurwa, imigozi ikomeye ya hydrogène iri hagati yiminyururu ya molekile no mumurongo irasenyuka, kandi kurekura gukomeye kwitsinda rya hydroxyl guhinduka selile ya alkali selile.Nyuma ya etherification agent yitwaye, itsinda -OH rihindurwa mumatsinda -OR.Kubona selile ether.Imiterere ya selulose ether iterwa n'ubwoko, ubwinshi no gukwirakwiza insimburangingo.Itondekanya rya selile ya selile nayo ishingiye ku bwoko bwinsimburangingo, urwego rwa etherification, solubile hamwe nibisabwa bijyanye.Ukurikije ubwoko bwinsimburangingo kumurongo wa molekile, irashobora kugabanywamo monoether hamwe na ether ivanze.HPMC dusanzwe dukoresha ni ether ivanze.Hydroxypropyl methyl selulose ether HPMC nigicuruzwa aho igice cyitsinda rya hydroxyl kumurongo gisimburwa nitsinda ryimikorere naho ikindi gice gisimburwa nitsinda rya hydroxypropyl.HPMC ikoreshwa cyane mubikoresho byo kubaka, gutwikira latx, ubuvuzi, chimie ya buri munsi, nibindi bikoreshwa nkibikoresho byibyimbye, bigumana amazi, stabilisateur, ikwirakwiza, hamwe nogukora firime.
2.Gufata amazi ya selile ya selile: mugukora ibikoresho byubwubatsi, cyane cyane minisiteri yumye, selulose ether igira uruhare rudasubirwaho, cyane cyane mugukora minisiteri idasanzwe (minisiteri yahinduwe), ni ngombwa.Ibigize.Uruhare rwingenzi rwamazi ya elegitoronike ya selile ether muri minisiteri ni mubice bitatu.Imwe ni ubushobozi buhebuje bwo gufata amazi, indi ni ingaruka ku guhoraho hamwe na thixotropy ya minisiteri, naho icya gatatu ni imikoranire na sima.Ingaruka yo gufata amazi ya selile ya selile biterwa no kwinjiza amazi kumurongo wibanze, imiterere ya minisiteri, uburebure bwikigero cya minisiteri, amazi akenerwa na minisiteri, nigihe cyo kugenera ibikoresho.Kugumana amazi ya selulose ether ubwayo bituruka kumashanyarazi no kubura umwuma wa selile ubwayo.
umubyimba na thixotropy ya selile ya ether: Uruhare rwa kabiri rwa selulose ether-kubyimba biterwa na: urugero rwa polymerisation ya selile ya selile, kwibanda kumuti, ubushyuhe nibindi bihe.Imiterere ya gelation yibisubizo nibintu byihariye bya alkyl selulose nibiyikomokaho.Ibiranga gelation bifitanye isano nurwego rwo gusimbuza, kwibanda kubisubizo hamwe ninyongera.
Ubushobozi bwiza bwo gufata amazi butuma hydrata ya sima irushaho kuba nziza, irashobora kunonosora uburyohe bwamazi ya minisiteri itose, kongera imbaraga zo guhuza za minisiteri, kandi igihe gishobora guhinduka.Kwiyongera kwa selulose ether kumashanyarazi yo gutera imashini irashobora kunoza imikorere yo gutera cyangwa kuvoma minisiteri, hamwe nimbaraga zubaka.Kubwibyo, selulose ether ikoreshwa cyane nkinyongera yingenzi muri minisiteri ivanze.
Igihe cyo kohereza: Ukuboza-16-2021