carboxymethyl cellulose

I-Cellulose yemvelo iyi-polysaccharide esatshalaliswa kabanzi kakhulu futhi eningi kakhulu yemvelo, futhi imithombo yawo icebile kakhulu. Ubuchwepheshe bokuguqulwa kwamanje kweselula ikakhulukazi bugxile ekuthetheleni nasekuhlolweni. Ukusabela kwe-carboxmethylation kuyindlela yobuchwepheshe bokuthenjwa. I-Carboxymethyl Cellulose (CMC) itholakala ngemuva kwe-calloxymetútation of cellulose. Isixazululo sayo samanzi sinemisebenzi yokuqina, ukwakheka kwamafilimu, ukunxusa, ukugcinwa kwamanzi, ukuvikela kwamanzi, ukuvikelwa kokumiswa, kusetshenziswa kabanzi ku-petroleum, ukudla, umuthi, izimboni ezibaluleke kakhulu ze-celluLose.

Izakhiwo Ezibonakalayo
I-Sodium carboxymethylcellellulose (CMC) yi-anionic cellulose ether. Ukuvela kwayo kumhlophe noma kancane i-fiber powder emhlophe noma ephuzi, i-powder emhlophe, engenamzimba, engenambitha, futhi ayinobuthi; Kuyancibilika kalula emanzini abandayo noma ashisayo futhi kwakha ukubonakala okuthile. Isixazululo esibonakalayo. Isixazululo singathathi hlangothi noma kancane, insolul in ethanol, ether, i-isopropanol, i-acetone namanye ama-solvents arganic, kepha ancibilika ngo-60% ethanol noma isixazululo se-acetone. Kuyi-hygroscopic futhi uzinze ukukhanya nokushisa. I-visa inciphisa ngokwanda kokushisa. Isixazululo sizinzile kwaPh 2-10. Lapho i-PH iphansi kune-2, ama-solids anembe. Lapho i-PH iphakeme kune-10, i-visa iyehla. Amazinga okushisa angu-227 ° C, izinga lokushisa le-carbonization lingu-252 ° C, futhi ukungezwani okungaphezulu kwesisombululo esingamanzi esingu-21mn / n.

Izakhiwo Zamakhemikhali
Itholakala nge-Cellulose nge-carboxymetteryl substiturents, yelapha i-cellulose nge-sodium hydroxide ukwakha i-alkali cellulose, bese uphendula nge-monochlorosetic acid. Uphiko lukashukela owakha ama-cellulose anamaqembu amathathu ama-hydroxyl angenziwa athathelwe indawo, ngakho-ke imikhiqizo enamazinga ahlukene wokufaka esikhundleni angatholakala. Ngokwesilinganiso, i-1mmol ye-carboxymethyl group nge-1g isisindo esomile iyafakwa emanzini bese ikhuza i-acid, kepha ingavuvukala futhi isetshenziselwe i-ion ukushintshana kwe-chromatography. I-Carboxymethyl Pka imayelana ne-4 emanzini amsulwa futhi cishe ngo-3.5 ku-0.5mol / l nacl. Kuyinto ebuthakathaka ye-acial exchanger futhi imvamisa esetshenziselwa ukwahlukana kwamaprotheni angathathi hlangothi nakuyisisekelo kwaPh> 4. Bangaphezu kuka-40% amaqembu e-hydroxyl athathelwa indawo amaqembu e-carboxymethyl, angachithwa emanzini ukwakha isixazululo esizinzile se-colloidal solution.

Inhloso Eyinhloko
I-Carboxymethylcelcelcellulose (CMC) iyimpuphu ye-flocculent engenabuthi, enobuthi ngokusebenza okuzinzile futhi ingena kalula emanzini. Isixazululo sayo esinamanzi athathwa njengento engathathi hlangothi noma i-alkali esobala, incibilika kwamanye ama-glues ancibilikayo amanzi kanye nama-resins, futhi insoluble ku-organic solvents afana ne-ethanol. I-CMC ingasetshenziswa njenge-binder, isikhungo, umenzi we-ejenti, emulsifier, dispersant, stabilizer, i-agent, njll.

I-Sodium Carboxymethyl Cellulose (CMC) ingumkhiqizo okhipha okukhulu kakhulu, uhla olubanzi kakhulu lokusetshenziswa kanye nokusetshenziswa okulula kakhulu phakathi kwezithambisi ze-cellulose, ezaziwa ngokuthi "ama-monosodium we-monosodium glutamate".

1. Isetshenziswa emafutheni kanye nokushayela kwegesi yemvelo, ukumba kahle namanye amaphrojekthi
Udaka oluqukethe i-CMC lungenza i-Wall Wall kahle ifomu lokuhlunga elincanyana neqinile elinemvume ephansi, ukunciphisa ukulahleka kwamanzi.
Ngemuva kokungeza i-CMC odakeni, i-rig yokumba ingathola amandla aphansi okuqala, ukuze odaka akwazi ukukhulula igesi esongelwe kuyo, futhi ngasikhathi sinye, imfucumfucu ingalahlwa ngokushesha emgodini odaka.
③ Ukuvutha udaka, njengokumiswa kweminye imisindo kanye nokusabalalisa, kunempilo ethile eshalofini. Ukungeza i-CMC kungenza ukuthi zinzile futhi kunwebe impilo yeshalofu.
Udaka oluqukethe okuqukethe i-CMC alunakuthinteka khona isikhunta, ngakho-ke akudingekile ukugcina inani eliphakeme le-PH futhi lisebenzise amatatifomu.
⑤ iqukethe i-CMC njenge-ejenti yokwelashwa yokushayela udaka oludonsayo, olungamelana nokungcoliswa kosawoti othokozisayo ohlukahlukene.
Udaka oluqukethe i-CMC-oluqukethe ukuqina okuhle futhi lunganciphisa ukulahleka kwamanzi noma ngabe izinga lokushisa lingaphezulu kuka-150 ° C.

I-CMC ene-viscosity ephezulu futhi i-degree ephezulu yokufaka esikhundleni ilungele udaka olunobunzima obuphansi, kanye ne-cmc enokubonakala okuphansi kanye nezinga eliphakeme lokufaka esikhundleni semali lilungele udaka ngobuningi obukhulu. Ukukhethwa kwe-CMC kufanele kunqunywe ngokuya ngezimo ezahlukahlukene njengohlobo lwe-mud, isifunda, kanye nokujula okuhle.

2. Isetshenziswa kundwangu, ukuphrinta nokudaya izimboni. Embonini yezindwangu, i-CMC isetshenziswa njenge-ejenti ye-sizing yokwehla kwe-yorn okukhanyayo, uvolo, indwangu yamakhemikhali, imijondolo nezinye izinto eziqinile;

I-3. Isetshenziswa ePhepha Imboni ye-CMC ingasetshenziswa njengephepha le-ejenti yephepha kanye ne-ejenti yezandla embonini yamaphepha. Ukungeza u-0,1% kuye ku-0.3% we-CMC ku-pulp kungakhuphula amandla ashukumisayo wephepha ngo-40% kuya ku-50%, futhi kwandise indawo yokuqhekeka ngamahlandla amane kuya kwayisi-5.

I-4. I-CMC ingasetshenziswa njenge-dirt adsorbent uma ingezwe ku-sonthetic detegergents; Amakhemikhali ansuku zonke afana nemboni yamazinyo embonini yamazinyo CMC Glycerol Aquode Cloudit isetshenziswa njenge-ToothParte Gum Base; Umkhakha wezemithi usetshenziswa njenge-nyouner ne-emulsifier; Isixazululo samanzi e-CMC sisetshenziswa njengentanta ngemuva kokuqina kwezimayini nokunye.

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6. Isetshenziswa ekwakheni ukuthuthukisa ukugcinwa kwamanzi namandla

7. Isetshenziswe embonini yokudla. Imboni yokudla isebenzisa i-CMC ngezinga eliphakeme lokubuyiselwa esikhundleni se-ayisikhilimu, ukudla okusemathinini, ama-noodle asheshayo, kanye ne-foam stabilizer yebhiya. Kwabakhulu, ama-beinders noma ama-ejenti ahlukene.

8. Imboni yezemithi ikhetha i-CMC nge-viscosity efanelekile njenge-binder, i-ejenti yamathebulethi, kanye nokumisa ummeli wokumiswa, njll.