Gukoresha selile nkibikoresho fatizo,CMC-Nayateguwe nuburyo bubiri. Iya mbere ni alkalisation ya selile. Cellulose ikora hamwe na hydroxide ya sodium kugirango itange selile ya alkali, hanyuma selile ya alkali ikora na acide chloroacetic kugirango itange CMC-Na, bita etherification.
Sisitemu yo kubyitwaramo igomba kuba alkaline. Iyi nzira ni iyuburyo bwa Williamson ether synthesis. Uburyo bwa reaction ni ugusimbuza nucleophilique. Sisitemu yo kubyitwaramo ni alkaline, kandi iherekejwe na reaction zimwe na zimwe imbere y'amazi, nka sodium glycolate, aside glycolike n'ibindi bicuruzwa. Bitewe nuko habaho reaction kuruhande, ikoreshwa rya alkali na etherification agent biziyongera, bityo bigabanye imikorere ya etherification; Icyarimwe, sodium glycolate, acide glycolike hamwe n’umwanda mwinshi wumunyu urashobora kubyara muburyo bwo kuruhande, bigatuma ubuziranenge nigabanuka ryibicuruzwa. Kugirango uhagarike ingaruka zuruhande, ntabwo ari ngombwa gukoresha alkali gusa mu buryo bushyize mu gaciro, ahubwo ni no kugenzura ingano ya sisitemu y’amazi, kwibumbira hamwe kwa alkali hamwe nuburyo bukangura hagamijwe alkalisiyasi ihagije. Muri icyo gihe, hagomba gusuzumwa ibisabwa ku bicuruzwa ku bijyanye n’ubukonje n’urwego rwo gusimburwa, kandi umuvuduko ukabije n’ubushyuhe bigomba gusuzumwa muri rusange. Kugenzura nibindi bintu, ongera igipimo cya etherification, kandi uhagarike kubaho kwa reaction kuruhande.
Dukurikije ibitangazamakuru bitandukanye bya etherification, umusaruro winganda za CMC-Na urashobora kugabanywamo ibyiciro bibiri: uburyo bushingiye kumazi nuburyo bushingiye kumashanyarazi. Uburyo bukoresha amazi nkibisubizo byitwa uburyo bwo gukoresha amazi, bukoreshwa mukubyara alkaline iciriritse na CMC-Na yo mu rwego rwo hasi. Uburyo bwo gukoresha ibishishwa kama nkibisubizo byitwa uburyo bwa solvent, bukwiranye nogukora umusaruro wo hagati na murwego rwohejuru CMC-Na. Izi reaction zombi zikorerwa mumashanyarazi, arizo nzira yo guteka kandi ubu ni bwo buryo nyamukuru bwo gukora CMC-Na.
Uburyo bwo gukoresha amazi ：
Uburyo butwarwa n’amazi nuburyo bwambere bwo gukora inganda, aribwo buryo bwo gukora alkali selulose na etherification agent mubihe bya alkali nubusa. Mugihe cya alkalisation na etherification, nta sisitemu ngenga ibaho muri sisitemu. Ibikoresho bisabwa muburyo bwitangazamakuru ryamazi biroroshye cyane, hamwe nishoramari rito nigiciro gito. Ingaruka ni ukubura umubare munini wibikoresho byamazi, ubushyuhe buterwa nigisubizo byongera ubushyuhe, byihutisha umuvuduko wibisubizo byuruhande, biganisha kuri etherifike nkeya, hamwe nubuziranenge bwibicuruzwa. Uburyo bukoreshwa mugutegura ibicuruzwa bito n'ibiciriritse byo mu rwego rwa CMC-Na, nk'ibikoresho byoza, ibikoresho bingana imyenda n'ibindi nkibyo.
Uburyo bwo gukemura ：
Uburyo bwa solvent nabwo bwitwa uburyo bwa organic solvent method, kandi ibyingenzi byingenzi ni uko alkalisation na etherification reaction ikorwa muburyo bwa solge organic nkibisubizo (diluent). Ukurikije ingano yimikorere idahwitse, igabanijwe muburyo bwo guteka hamwe nuburyo bworoshye. Uburyo bwa solvent nuburyo bumwe bwo gufata inzira yuburyo bwamazi, kandi bugizwe nibyiciro bibiri bya alkalisation na etherification, ariko uburyo bwo kubyitwaramo muribi byiciro byombi buratandukanye. Uburyo bwa solvent bukiza inzira yo gushiramo alkali, gukanda, kumenagura, gusaza nibindi bikomoka muburyo bwamazi, kandi alkalisation na etherification byose bikorerwa muri kode. Ikibi ni uko kugenzura ubushyuhe ari muke, kandi umwanya ukenewe hamwe nigiciro ni kinini. Birumvikana ko, kugirango habeho umusaruro wibikoresho bitandukanye, birakenewe kugenzura neza ubushyuhe bwa sisitemu, igihe cyo kugaburira, nibindi, kugirango ibicuruzwa bifite ubuziranenge nibikorwa byiza birashobora gutegurwa.
Igihe cyo kohereza: Apr-25-2024