Umusaruro wa ultra-high viscosity sodium carboxymethyl selulose

1. Ihame rusange ry'umusaruro wa CMC

. Ethanol, 317.2kg; alkali (44.8%), 11.1kg; acide monochloroacetic, 35.4kg; toluene, 310.2kg,

(2) Ihame ry'umusaruro n'uburyo? Alkaline selulose ikozwe muri selile na sodium hydroxide yumuti wamazi cyangwa sodium hydroxide aqueous etanol yumuti wa etanol, hanyuma igafatwa na acide monochloroacetic cyangwa sodium monochloroacetate kugirango ibone ibicuruzwa bitavanze, nibicuruzwa bya alkaline byumye, Pulverize mubicuruzwa biboneka mubucuruzi bwa carboxymethyl selile. ). Ibicuruzwa bitavanze noneho bidafite aho bibogamiye, byogejwe, na sodium ya chloride ikurwaho, hanyuma yumishwa kandi irajanjagurwa kugirango ubone sodium nziza ya carboxymethyl selile. Imiti yimiti nuburyo bukurikira:

(C6H9O4-OH) 4 + nNaOH- (C6H9O4-ONa) n + nH2O

(3) Ibisobanuro

Cellulose irajanjagurwa kandi ihagarikwa muri Ethanol, ongeramo lye hamwe na 30rain munsi yo gukurura, komeza kuri 28-32°C, gukonjesha kugeza ku bushyuhe buke, ongeramo aside monochloroacetic, shyushya 55°C kuri 1.5h hanyuma ukore kuri 4h; ongeramo acide acike kugirango uhindure imvange ya reaction, Igicuruzwa kibisi kiboneka mugutandukanya umusemburo, kandi ibicuruzwa bivanze byogejwe kabiri hamwe na methanol mumazi yo gukaraba bigizwe na mixer na centrifuge, hanyuma bikumishwa kugirango ubone ibicuruzwa.

Igisubizo cya CMC gifite ubukonje bwinshi, kandi ihinduka ryubushyuhe ntirizatera gelation.

2.Ibikorwa byo kubyara ultra-high viscosity sodium carboxymethyl selulose

  Uburyo bwo gukora bwa ultra-high viscosity sodium carboxymethyl selulose.

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. Akarusho nuko inzira itunganye, indangagaciro yibicuruzwa irashobora kugera ku bwiza bwubwoko bwa 1% B> 10000mpa.s, nubuziranenge> 99.5%.

  Carboxymethyl selulose ni inkomoko hamwe na ether yubatswe yabonetse muguhindura imiti ya selile naturel. Itsinda rya carboxyl kumurongo wa molekile irashobora gukora umunyu. Umunyu ukunze kugaragara cyane ni umunyu wa sodium, aribyo sodium carboxymethyl selulose (Na -CMC), bakunze kwita CMC, ni ionic ether. CMC ni ifu yamazi menshi, yera cyangwa umuhondo werurutse mubigaragara, bitaryoshye, bidafite impumuro nziza, bidafite uburozi, ntibishobora gutwikwa, bitoroshye, kandi bihamye kumucyo nubushyuhe.