Ubusanzwe CMC ni ifumbire ya anionic polymer yateguwe mugukora selile naturel hamwe na caustic alkali na acide monochloroacetic, ifite uburemere bwa 6400 (± 1 000). Ibicuruzwa nyamukuru ni sodium chloride na sodium glycolate. CMC ni ihindagurika rya selile. Yiswe ku mugaragaro “selile yahinduwe” n’umuryango w’ibiribwa n’ubuhinzi w’umuryango w’abibumbye (FAO) n’umuryango w’ubuzima ku isi (OMS).
ubuziranenge
Ibipimo nyamukuru bipima ubuziranenge bwa CMC ni urwego rwo gusimbuza (DS) nubuziranenge. Mubisanzwe, imitungo ya CMC iratandukanye iyo DS itandukanye; urwego rwo hejuru rwo gusimbuza, niko gukemura neza, hamwe no gukorera mu mucyo no guhagarara neza. Nk’uko raporo zibitangaza, gukorera mu mucyo kwa CMC ni byiza iyo urwego rwo gusimburwa ari 0.7-1.2, kandi ubwiza bw’umuti wabwo w’amazi ni bunini iyo agaciro ka pH ari 6-9. Kugirango hamenyekane ubuziranenge bwayo, usibye guhitamo imiti ya etherifing, hagomba no gusuzumwa ibintu bimwe na bimwe bigira ingaruka kurwego rwo gusimbuza no kweza, nkumubano wa dosiye iri hagati ya alkali na agent ya etherifingi, igihe cya etherifike, amazi ya sisitemu, ubushyuhe , pH agaciro, igisubizo cyibisubizo hamwe numunyu.
Isesengura ryibyiza nibibi bya sodium carboxymethyl selulose
Iterambere rya sodium carboxymethyl selulose mubyukuri ntiryigeze ribaho. Cyane cyane mumyaka yashize, kwagura imirima ikoreshwa no kugabanya ibiciro byumusaruro byatumye gukora carboxymethyl selulose irushaho gukundwa. Ibicuruzwa bigurishwa bivanze.
Noneho, nigute dushobora kumenya ubwiza bwa sodium carboxymethyl selulose, turasesengura duhereye kubintu bimwe na bimwe bifatika na chimique:
Mbere ya byose, irashobora gutandukanywa nubushyuhe bwa karubone. Ubushyuhe rusange bwa karubone ya sodium carboxymethyl selulose ni 280-300 ° C. Iyo iba karubone mbere yuko ubu bushyuhe butagera, noneho ibicuruzwa bifite ibibazo. (Mubisanzwe karubone ikoresha itanura rya muffle)
Icya kabiri, itandukanijwe nubushyuhe bwayo. Mubisanzwe, sodium carboxymethyl selulose izahindura ibara iyo igeze kubushyuhe runaka. Ubushyuhe buri hagati ya 190-200 ° C.
Icya gatatu, irashobora kumenyekana uhereye kumiterere yayo. Kugaragara kw'ibicuruzwa byinshi ni ifu yera, kandi ingano yacyo muri rusange ni mesh 100, kandi amahirwe yo kunyuramo ni 98.5%.
Sodium carboxymethyl selulose nigicuruzwa gikoreshwa cyane na selile kandi gifite uburyo bwinshi bwo gusaba, bityo hashobora kubaho kwigana kumasoko. Nigute ushobora kumenya niba ari ibicuruzwa bisabwa nabakoresha birashobora gutsinda ikizamini gikurikira.
Hitamo 0.5g ya sodium carboxymethyl selulose, itazi neza niba ari umusaruro wa sodium carboxymethylcellulose, uyishongeshe muri 50mL y'amazi hanyuma ukangure, ongeramo bike buri gihe, ubyuke kuri 60 ~ 70 ℃, hanyuma ushushe muminota 20 kugeza kora igisubizo kimwe, gikonje Nyuma yo gutahura amazi, hakozwe ibizamini bikurikira.
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2. Ongeramo mL 10 ya acetone kuri 5 mL yumuti wikizamini, kunyeganyeza no kuvanga neza kugirango ubyare imvura yera.
3. Ongeramo 1mL ya ketone sulfate yikizamini cya 5mL yumuti wikizamini, vanga kandi unyeganyeze kugirango ubyare imvura yubururu bworoshye.
4. Ibisigisigi byabonetse mukwoza iki gicuruzwa byerekana imyifatire isanzwe yumunyu wa sodium, ni ukuvuga sodium carboxymethyl selulose.
Binyuze muri izi ntambwe, urashobora kumenya niba ibicuruzwa byaguzwe ari sodium carboxymethyl selulose nubuziranenge bwabyo, bitanga uburyo bworoshye kandi bufatika kubakoresha kugirango bahitemo neza ibicuruzwa
Igihe cyo kohereza: Ugushyingo-12-2022