Methylcellulose (MC) na carboxymethylcellulose (CMC) ni ibintu bibiri bikomoka kuri selile, bikoreshwa cyane mu biribwa, ubuvuzi, ubwubatsi, inganda z’imiti n’izindi nzego. Nubwo byose byahinduwe muburyo bwa chimique kuva selile isanzwe, hariho itandukaniro rikomeye mumiterere yimiti, imiterere yumubiri na chimique, hamwe nibisabwa.
1. Imiterere yimiti nuburyo bwo gutegura
Methylcellulose ikorwa no gukora selile hamwe na methyl chloride (cyangwa methanol) mugihe cya alkaline. Muri iki gikorwa, igice cyamatsinda ya hydroxyl (-OH) muri molekile ya selile isimburwa nitsinda ryimikorere (-OCH₃) kugirango ikore methylcellulose. Urwego rwo gusimbuza (DS, umubare wibisimburanya kuri glucose unit) ya methylcellulose igena imiterere yumubiri nubumara, nko gukomera no kwiyegeranya.
Carboxymethylcellulose ikorwa mugukora selile hamwe na aside ya chloroacetike mubihe bya alkaline, naho hydroxyl itsinda igasimburwa na carboxymethyl (-CH₂COOH). Urwego rwo gusimbuza nu rwego rwa polymerisation (DP) ya CMC bigira ingaruka ku gukomera kwayo no kwiyegereza amazi. Ubusanzwe CMC ibaho muburyo bwumunyu wa sodium, bita sodium carboxymethylcellulose (NaCMC).
2. Imiterere yumubiri nubumara
Gukemura: Methylcellulose ishonga mumazi akonje, ariko ikabura imbaraga kandi ikora gel mumazi ashyushye. Ihindurwa ryumuriro rituma ikoreshwa nkikintu kibyibushye kandi cyiza mugutunganya ibiryo. CMC irashonga mumazi akonje kandi ashyushye, ariko ubwiza bwumuti wabwo buragabanuka uko ubushyuhe bwiyongera.
Viscosity: Ubukonje bwombi bugira ingaruka ku rwego rwo gusimbuza no kwibanda ku gisubizo. Ubukonje bwa MC banza kwiyongera hanyuma bukagabanuka uko ubushyuhe bwiyongera, mugihe ubukonje bwa CMC bugabanuka uko ubushyuhe bwiyongera. Ibi bibaha inyungu zabo mubikorwa bitandukanye byinganda.
pH itajegajega: CMC ikomeza guhagarara neza mugice kinini cya pH, cyane cyane mubihe bya alkaline, bigatuma ikundwa cyane nka stabilisateur kandi ikabyimbye mubiribwa na farumasi. MC irahagaze neza mubihe bidafite aho bibogamiye kandi alkaline nkeya, ariko izangirika muri acide ikomeye cyangwa alkalis.
3. Ahantu ho gusaba
Inganda zibiribwa: Methylcellulose ikoreshwa mubiribwa nkibibyimbye, emulisiferi na stabilisateur. Kurugero, irashobora kwigana uburyohe nuburyo bwamavuta mugihe itanga ibiryo birimo amavuta make. Carboxymethylcellulose ikoreshwa cyane mubinyobwa, ibicuruzwa bitetse hamwe n’ibikomoka ku mata nkibyimbye na stabilisateur kugirango birinde gutandukanya amazi no kunoza uburyohe.
Uruganda rwa farumasi: Methylcellulose ikoreshwa mugutegura ibinini bya farumasi nkibihuza kandi bidahwitse, kandi nkibikoresho bisiga amavuta kandi bikingira, nko mumaso y'amaso y'amaso asimbuye amarira. CMC ikoreshwa cyane mubuvuzi kubera biocompatibilité nziza, nko gutegura imiti irekura-irekuye hamwe nibifata mumaso.
Inganda zubaka n’inganda: MC ikoreshwa cyane mubikoresho byubwubatsi nkibibyimbye, bigumana amazi kandi bifata sima na gypsumu. Irashobora kunoza imikorere yubwubatsi nubuziranenge bwibikoresho. CMC ikunze gukoreshwa mugutunganya ibyondo mubucukuzi bwa peteroli, gutobora imyenda no gusiga irangi, gutwikira impapuro hejuru, nibindi.
4. Umutekano no kurengera ibidukikije
Byombi bifatwa nkumutekano kugirango bikoreshwe mu biribwa no mu bya farumasi, ariko inkomoko yabyo nuburyo bwo kubyaza umusaruro bishobora kugira ingaruka zitandukanye kubidukikije. Ibikoresho fatizo bya MC na CMC bikomoka kuri selile karemano kandi birashobora kwangirika, bityo bikora neza mubijyanye no kubungabunga ibidukikije. Nyamara, uburyo bwabo bwo kubyaza umusaruro bushobora kuba bukubiyemo imiti yimiti na reagent, bishobora kugira ingaruka kubidukikije.
5. Igiciro nibisabwa ku isoko
Bitewe nuburyo butandukanye bwo gukora, ikiguzi cya methylcellulose mubusanzwe kiri hejuru, igiciro cyacyo rero nacyo kiri hejuru ya carboxymethylcellulose. Ubusanzwe CMC ifite isoko ryinshi kubera isoko ryagutse hamwe nigiciro gito cyumusaruro.
Nubwo methylcellulose na carboxymethylcellulose byombi bikomoka kuri selile, bifite itandukaniro rikomeye mumiterere, imitungo, imikoreshereze nibisabwa ku isoko. Methylcellulose ikoreshwa cyane cyane mubiribwa, ubuvuzi nibikoresho byubaka bitewe nubushyuhe budasanzwe bwumuriro no kugenzura ubukonje bwinshi. Carboxymethyl selulose yakoreshejwe cyane mubiribwa, ubuvuzi, peteroli-chimique, imyenda nizindi nganda kubera gukemuka kwiza, guhinduranya ibishishwa no guhuza pH nini. Guhitamo ibikomoka kuri selile biterwa nibisobanuro byihariye bikenewe.
Igihe cyo kohereza: Kanama-20-2024