Cellulose ether ni polymer ikoze mu buryo bwa sillulose karemano binyuze mu guhindura shimi. Cellulose ether ni ikintu gikomoka kuri cellulose karemano. Ikorwa rya cellulose ether ritandukanye na polymer zikoze mu buryo bwa sillulose. Ibikoresho byayo by'ibanze ni cellulose, imvange ya polymer karemano. Bitewe n'imiterere ya cellulose karemano, cellulose ubwayo ntabwo ifite ubushobozi bwo gukorana n'ibintu bihindura ether. Ariko, nyuma yo kuvurwa n'ikintu kibyimba, imigozi ikomeye ya hydrogen hagati y'iminyururu ya molekile n'iminyururu irasenyuka, kandi irekurwa ry'itsinda rya hydroxyl rihinduka cellulose ya alkali ikora. Kubona cellulose ether.
Imiterere ya ether za cellulose iterwa n'ubwoko, umubare n'ikwirakwizwa ry'ibisimbura. Uburyo bwo gushyira mu byiciro ether za cellulose bushingiye kandi ku bwoko bw'ibisimbura, urwego rwa etherification, gushonga n'imiterere bifitanye isano. Dukurikije ubwoko bw'ibisimbura ku muyoboro wa molekile, ishobora kugabanywamo monoether na ether ivanze. Ubusanzwe dukoresha mc nka monoether, na HPmc nka ether ivanze. Methyl cellulose ether mc ni umusaruro nyuma y'uko itsinda rya hydroxyl riri ku gice cya glucose cya cellulose karemano risimbuwe n'itsinda rya methoxy. Ni umusaruro uboneka hashingiwe ku gusimbuza igice cy'itsinda rya hydroxyl kuri icyo gice n'itsinda rya methoxy n'ikindi gice n'itsinda rya hydroxypropyl. Formula y'imiterere ni [C6H7O2(OH)3-mn(OCH3)m[OCH2CH(OH)CH3]n]x Hydroxyethylmethylcellulose ether HEmc, izi ni zo moko y'ingenzi akoreshwa cyane kandi agurishwa ku isoko.
Ku bijyanye n'uburyo ishonga ishobora gushonga, ishobora kugabanywamo ionic na non-ionic. I-ether za cellulose zidafite ionic zishonga mu mazi zigizwe ahanini n'uruhererekane rubiri rwa alkyl ethers na hydroxyalkyl ethers. Ionic Cmc ikoreshwa cyane cyane mu isabune y'ubukorikori, gucapa no gusiga amarangi mu myenda, gushakisha ibiryo n'amavuta. I-non-ionic mc, HPmc, HEmc, n'izindi zikoreshwa cyane cyane mu bikoresho by'ubwubatsi, gusiga latex, imiti, imiti ya buri munsi, n'ibindi. Ikoreshwa nk'ingufu, ifata amazi, itera imbaraga, igabanya ubushyuhe n'itera firime.
Igihe cyo kohereza: Ugushyingo-24-2022