Cellulose ether ni polymer yubukorikori ikozwe muri selile naturel binyuze muburyo bwo guhindura imiti.Cellulose ether ni inkomoko ya selile naturel.Umusaruro wa selulose ether uratandukanye na polymrike ya synthique.Ibikoresho byibanze byingenzi ni selile, uruganda rusanzwe rwa polymer.Bitewe numwihariko wimiterere ya selile isanzwe, selile ubwayo ntabwo ifite ubushobozi bwo kubyitwaramo na etherification.Ariko, nyuma yo kuvura imiti yabyimbye, imiyoboro ikomeye ya hydrogène iri hagati yiminyururu ya molekile n'iminyururu irasenyuka, kandi kurekura gukomeye kwitsinda hydroxyl bihinduka selile ya alkali selile.Kubona selile ether.
Ibiranga selile ya selile biterwa n'ubwoko, umubare no gukwirakwiza insimburangingo.Itondekanya rya selulose ether nayo ishyirwa mubikorwa ukurikije ubwoko bwinsimburangingo, urwego rwa etherification, solubile hamwe nibisabwa bijyanye.Ukurikije ubwoko bwinsimburangingo kumurongo wa molekile, irashobora kugabanywamo monoether hamwe na ether ivanze.MC dusanzwe dukoresha ni imwe, kandi HPMC ivanze ether.Methyl selulose ether MC nigicuruzwa nyuma yitsinda rya hydroxyl kumurongo wa glucose ya selile ya selile isanzwe isimburwa na mikorerexy.Nibicuruzwa byabonetse mugusimbuza igice cyitsinda rya hydroxyl kumurongo hamwe nitsinda ryimikorere naho ikindi gice hamwe nitsinda rya hydroxypropyl.Imiterere yuburyo ni [C6H7O2 (OH) 3-mn (OCH3) m [OCH2CH (OH) CH3] n] x Hydroxyethyl methyl selulose ether HEMC, ubu ni ubwoko bwingenzi bukoreshwa cyane kandi bugurishwa ku isoko.
Kubijyanye no kwikemurira ibibazo, birashobora kugabanywamo ionic na non-ionic.Amazi ashonga adafite ionic selulose ethers agizwe ahanini nuruhererekane rwibintu bibiri bya alkyl ethers na hydroxyalkyl ethers.Ionic CMC ikoreshwa cyane cyane munganda zogukoresha, gucapa imyenda no gusiga irangi, ibiryo nubushakashatsi bwamavuta.MC idafite ionic MC, HPMC, HEMC, nibindi bikoreshwa cyane mubikoresho byubwubatsi, gutwikira latx, imiti, imiti ya buri munsi, nibindi bikoreshwa nkibibyibushye, bigumana amazi, stabilisateur, ikwirakwiza hamwe nogukora firime.
Kumenyekanisha ubuziranenge bwa selile ether:
Ingaruka yibintu bya mikorerexyl kumiterere: kubika amazi nibikorwa byo kubyimba
Ingaruka nziza ya hydroxyethoxyl / hydroxypropoxyl yibirimo: uko ibiyirimo byinshi, niko gufata amazi neza.
Ingaruka zubwiza bwubwiza: uko urwego rwa polymerisiyasi ruri hejuru, niko ubwiza bwiyongera niko gufata amazi neza.
Ingaruka zubwiza buhebuje: nibyiza gutatanya no gusesekara muri minisiteri, birihuta kandi birasa, kandi kubika amazi ugereranije nibyiza
Ingaruka nziza yo kohereza urumuri: urwego rwo hejuru rwa polymerisiyonike, niko urwego rwa polymerisation rumeze, hamwe n’umwanda muke;
Ingaruka yubushyuhe bwa gel: ubushyuhe bwa gel bwubatswe ni 75 ° C.
Ingaruka zubwiza bwamazi: <5%, selile ya selile iroroshye gukuramo ubuhehere, bityo igomba gufungwa no kubikwa
Ingaruka nziza ivu: <3%, hejuru ivu, niko umwanda mwinshi
PH agaciro keza ingaruka: hafi ya neutre, selulose ether ifite imikorere ihamye hagati ya PH: 2-11
Igihe cyo kohereza: Gashyantare-14-2023