Uburyo bwo gukora sodium carboxymethylcellulose

Uburyo bwo gukora sodium carboxymethylcellulose (CMC) bukubiyemo intambwe nyinshi, harimo gutegura selulosi, etherification, gutunganya no kumisha. Dore incamake y'uburyo busanzwe bwo gukora:

1. Gutegura Selulosi: Iyi gahunda itangirana no gutegura selulosi, ikunze guturuka mu biti cyangwa mu myenda y'ipamba. Selulosi ibanza gusukurwa no gutozwa kugira ngo ikureho imyanda nka lignin, hemicellulose, n'indi myanda. Iyi selulosi isukuye ikora nk'ibikoresho byo gutangira gukora CMC.
2. Alkalization: Selulosi isukuye ivurwa n'umuti wa alkaline, ubusanzwe sodium hydroxide (NaOH), kugira ngo yongere uburyo bwo kuyikora no koroshya uburyo bwo kuyihindura. Alkalization kandi ifasha kubyimba no gufungura imigozi ya selulosi, bigatuma irushaho kuboneka mu buryo bworoshye bwo kuyihindura mu buryo bw'imiti.
3. Uburyo bwo guhindura imiterere y'ibintu: Selulose ya alkalize iterwa na aside monochloroacetic (MCA) cyangwa umunyu wayo wa sodium, sodium monochloroacetate (SMCA), iyo hari catalyst mu gihe hagenzurwa. Ubu buryo bwo guhindura imiterere y'ibintu bukubiyemo gusimbuza amatsinda ya hydroxyl ku migozi ya selulose n'amatsinda ya carboxymethyl (-CH2COONa). Igipimo cyo gusimbuza (DS), kigereranya umubare mpuzandengo w'amatsinda ya carboxymethyl kuri buri gice cya glucose cy'urunigi rwa selulose, gishobora kugenzurwa hakoreshejwe uburyo bwo guhindura ibipimo by'uburyo bwo guhindura nk'ubushyuhe, igihe cyo gusubiza, n'ingano y'uburyo bwo gusubiza.
4. Kugabanya ubushyuhe: Nyuma yo gukwirakwiza umwuka, umusaruro uvamo urahindurwa kugira ngo uhindure andi matsinda aside ahinduka umunyu wa sodium (carboxymethylcellulose sodium). Ibi bikunze kugerwaho no kongeramo umuti wa alkaline, nka sodium hydroxide (NaOH), mu ruvange rw'umusaruro. Kugabanya ubushyuhe kandi bifasha guhindura pH y'umusaruro no gutuza umusaruro wa CMC.
5. Gusukura: Hanyuma isukurwa rya sodium carboxymethylcellulose ikozwe mu buryo bwa "crude sodium carboxymethylcellulose" kugira ngo ikureho imyanda, ibintu bitarakozwe, n'ibindi biva mu ruvange rw'ibisubizo. Uburyo bwo gusukura bushobora kuba burimo gukaraba, kuyungurura, gutandukanya amazi, no kumisha. CMC isukuwe isanzwe yozwa n'amazi kugira ngo ikureho alkali n'umunyu bisigaye, hanyuma hagakurikiraho kuyungurura cyangwa gutandukanya ibivuye mu ruganda kugira ngo CMC ikomeye itandukane n'ibivuye mu ruganda.
6. Kumisha: Sodium carboxymethylcellulose isukuye irashashwa kugira ngo ikureho ubushuhe bwinshi kandi ibone ubushuhe bwifuzwa bwo kubika no gukomeza gutunganya. Uburyo bwo kumisha bushobora kuba burimo kumisha mu mwuka, kumisha imashini, cyangwa kumisha ingoma, bitewe n'imiterere y'ibicuruzwa wifuza n'ingano y'ibyo ukora.

Umusaruro wa sodium carboxymethylcellulose uvamo ni ifu y'umweru cyangwa iy'umweru cyangwa ifu y'ibinyabutabire ifite ubushobozi bwo gushonga neza mu mazi no mu mikorere ya rheological. Ikoreshwa cyane nk'ikintu gikomeza ubukana, gitera imbaraga, gifata neza, kandi gihindura rheology mu nganda zitandukanye, harimo ibiribwa, imiti, amavuta yo kwisiga, imyenda, n'inganda.