Uchishandisa cellulose seyakaisa zvinhu, cmc-na yakagadzirirwa neyako-nhanho nzira. Yekutanga ndiyo nzira yea alkalization ye cellulose. Iyo cellulose inosangana neSodium Hydroxide kuti Grovel Cellalose Cellalose, uyezve Alkali Cellalose Inosangana neChloroalse Acid Acid kuti gadzirise CMC-NA, iyo inonzi eriraification.
Iyo nzira yekuita inofanira kunge iri alkaline. Maitiro aya ndeweWilliamson ether synthesis nzira. Iyo yekuita mechanism ndeye nucleophilic kutsiva. Iyo nzira yekuita ndeye alkaline, uye inoperekedzwa nemamwe mativi mukuvapo kwemvura, senge sodium glycolate, glycolic acid uye zvimwe zvigadzirwa. Nekuda kwekuvapo kwekushanda kwemativi, kushandiswa kweAlkali uye kuwedzerwa mumiririri kuchawedzera, nekudaro kuderedza kunyatsoita; Panguva imwe chete, sodium glycolate, glycolic acid uye mango emunyu anokwanisa kugadzirwa nenzira yekuita, ichikonzera kuchena uye kuderedzwa kwechigadzirwa. Kuti udzivise maitiro ezvekuita, zvakakosha kuti usashandise Alkali zvine musoro, asiwo kudzora huwandu hwesangano remvura, kusunganidzwa kweAlkali uye nzira inosimudzira yechinangwa chekukwana. Panguva imwecheteyo, izvo zvinodiwa zvechigadzirwa pane viscosity uye degree rekutsiva rinofanira kutariswa, uye kumhanya nekumhanya uye tembiricha kunofanirwa kufungwa nezvinhu zvine musoro. Kudzora uye zvimwe zvinhu, wedzera huwandu hwekutsausa, uye kudzivirira kuitika kwemativi maitiro.
Zvinoenderana neyekuwedzerwa kwenhepfenyuro yeiyo CMC-naChinyorwa cheCMC-na inogona kukamurwa kuita zvikamu zviviri: mvura-yakavakirwa nzira uye nzira solvent-yakavakirwa. Nzira yacho ichishandisa mvura seyekuita svikiro inonzi iyo nzira yemvura yepakati, iyo inoshandiswa kugadzira alkaline yepakati pakati uye yakaderera-giredhi cmc-na. Nzira yekushandisa organic solvent sediki svikiro inonzi iyo Solvent nzira, iyo yakakodzera yekugadzirwa kweiyo yepakati uye yakakwirira-giredhi cmc-na. Aya maviri maitiro anoitwa mukupfugama, ayo ndeayo yekubika uye parizvino iri nzira huru yekugadzira cmc-na.
WAteri Medium nzira:
Nzira inodonana nemvura iri yekutanga maindasitiri ekugadzira, iyo ndeyekuita alkali cellalose uye etified mumiririri pasi pemamiriro ezvinhu emahara alkali uye mvura. Munguva yea alkalization uye erafize, hapana kana svikiro svikiro muhurongwa. Izvo zvinodiwa zvekushandisa zvemvura yemu media nzira zvakareruka, nekudyara zvishoma uye mutengo wakaderera. Iko kukanganisa kwekushaikwa kwakakura kwedanho remvura Nzira yacho inoshandiswa kugadzirira pakati nepakati uye yakaderera-giredhi cmc-na zvigadzirwa, zvakadai sekuda, zvinyorwa zvemukati, zvidhori zvevamiririri uye zvakadai.
Solvent nzira:
Iyo Solvent nzira inonziwo iyo organcial solvent nzira, uye chimiro chayo ndechekuti iyo alkalization uye yekuchinja maitiro inoitwa pasi pemamiriro eiyo organic solvent seyekuita svikiro (DILUET). Zvinoenderana nehuwandu hwekutora Dailation, zvakakamurwa kuita nzira yekuba uye yakadzika nzira. Iyo solvent nzira yakafanana neyekuita maitiro emvura nzira, uye zvakare ine matanho maviri eAlkalization uye kuwedzerwa, asi svikiro yematanho maviri aya akasiyana. Iyo Solvent nzira inochengetedza maitiro ekunyudza Alkali Iko kukanganisa ndeyekuti kudzorwa kwe tembiricha kuri murombo, uye nzvimbo inodiwa uye mutengo wakakwira. Ehezve, pakugadzirwa kwemidziyo yakasiyana-siyana, zvakakodzera kudzora kudzora tembiricha yekushisa system, yekupa nguva, nezvimwe zvigadzirwa zvine hunhu hwakanaka uye kuita kwakanaka kunogona kugadzirira.
Kutumira nguva: Kukadzi-27-2023