Ubukonje bwa sodium carboxymethyl selulose nayo igabanijwemo amanota menshi ukurikije imikoreshereze itandukanye. Ubwiza bwubwoko bwo gukaraba ni 10 ~ 70 (munsi ya 100), imipaka yo hejuru yubukonje iva kuri 200 ~ 1200 yo gushushanya inyubako nizindi nganda, kandi ubwiza bwurwego rwibiribwa burarenze. Byose biri hejuru ya 1000, kandi ubwiza bwinganda zitandukanye ntabwo arimwe.
Kubera ubwinshi bwimikoreshereze.
Ubukonje bwa sodium carboxymethyl selulose bugira ingaruka kumyuka ya molekile igereranije, kwibumbira hamwe, ubushyuhe nagaciro ka pH, kandi ikavangwa na Ethyl cyangwa carboxypropyl selulose, gelatin, gum ya xanthan, karrageenan, inzige y'ibishyimbo, guar gum, agar, sodium alginate, pectin, gum arabic na krahisi n'ibiyikomokaho bifite aho bihurira neza (ni ukuvuga ingaruka zoguhuza).
Iyo pH agaciro ari 7, viscosity ya sodium carboxymethyl selulose igisubizo nicyo kinini, kandi iyo pH ari 4 ~ 11, iba ihagaze neza. Carboxymethylcellulose muburyo bwicyuma cya alkali nu munyu wa amonium ushonga mumazi. Ibyuma bihwanye na ion Ca2 +, Mg2 +, Fe2 + birashobora kugira ingaruka ku bwiza bwayo. Ibyuma biremereye nka silver, barium, chromium cyangwa Fe3 + birashobora gutuma bigwa mubisubizo. Niba igiteranyo cya ion kigenzuwe, nko kongeramo aside citricike ya chelating agent, hashobora kuboneka igisubizo kiboneye cyane, bikavamo amenyo yoroshye cyangwa akomeye.
Sodium carboxymethyl selulose ni ubwoko bwa selile karemano, ubusanzwe bukozwe mumapamba cyangwa ibiti nkibiti nkibikoresho fatizo kandi bigakorerwa etherification hamwe na acide monochloroacetic mugihe cya alkaline.
Ukurikije ibisobanuro byibikoresho fatizo no gusimbuza hydroxyl hydrogène muri selile ya selile D-glucose nitsinda rya carboxymethyl, haboneka amazi ya elegitoronike ya polymer hamwe ninzego zitandukanye zo gusimbuza no gukwirakwiza uburemere bwa molekile zitandukanye.
Kuberako sodium carboxymethyl selulose ifite ibintu byinshi bidasanzwe kandi byiza biranga, ikoreshwa cyane mubikorwa bya chimique ya buri munsi, ibiryo nubuvuzi nibindi bicuruzwa byinganda.
Kimwe mu bimenyetso byingenzi byerekana sodium carboxymethyl selile ni ubwiza bwa sodium carboxymethyl selulose. Agaciro ka viscosity kajyanye nibintu bitandukanye nko kwibanda, ubushyuhe nigipimo cyogosha. Nyamara, ibintu nko kwibanda, ubushyuhe nigipimo cyogosha nibintu byo hanze bigira ingaruka kumyuka ya sodium carboxymethyl selulose.
Uburemere bwa molekuline no gukwirakwiza molekuline nibintu byimbere bigira ingaruka kumyuka ya sodium carboxymethyl selulose yumuti. Kugenzura umusaruro no guteza imbere imikorere ya sodium carboxymethyl selulose, gukora ubushakashatsi ku buremere bwa molekuline no gukwirakwiza uburemere bwa molekuline bifite agaciro gakomeye cyane, mugihe ubwiza bwikigereranyo Igipimo gishobora kugira uruhare runaka.
Amategeko ya Newton muri rheologiya, nyamuneka soma ibikubiye muri "rheologiya" muri chimie physique, biragoye kubisobanura mumurongo umwe cyangwa ibiri. Niba ugomba kubivuga: kugirango igisubizo kiboneye cya cmc cyegereye amazi ya Newtonian, guhangayikishwa no kogosha bigereranywa nigipimo cyo kugabanuka, kandi coeffisiyoneri ihwanye hagati yabo yitwa coefficient ya viscosity cyangwa kinematike.
Viscosity ikomoka ku mbaraga ziri hagati yiminyururu ya selile, harimo imbaraga zo gutatanya hamwe na hydrogen. By'umwihariko, polymerisation yibikomoka kuri selile ntabwo ari umurongo ugizwe ahubwo ni amashami menshi. Mu gisubizo, selile nyinshi zifite amashami menshi arahujwe kugirango agire urusobe rwumwanya. Iyo imiterere irushijeho gukomera, niko imbaraga ziba hagati yiminyururu ya molekulari mubisubizo byavuyemo.
Kugirango habeho gutemba mugukemura ibibazo bya selile, imbaraga ziri hagati yiminyururu ya molekile zigomba kuneshwa, igisubizo rero hamwe nurwego rwo hejuru rwa polymerisation gisaba imbaraga nyinshi zo kubyara. Kubipima ubwiza, imbaraga kumuti wa CMC ni uburemere. Mugihe cyimiterere ihoraho, imiterere yumunyururu wigisubizo cya CMC hamwe nurwego runini rwa polymerisation ifite imbaraga nini, kandi umuvuduko uratinda. Gutinda gahoro byerekana ububobere.
Ubukonje bwa sodium carboxymethyl selulose bifitanye isano ahanini nuburemere bwa molekile, kandi ntaho bihuriye nurwego rwo gusimburwa. Ninshi murwego rwo gusimbuza, nuburemere bwa molekuline, kuko uburemere bwa molekuline bwitsinda ryasimbuwe na carboxymethyl nini kuruta itsinda rya hydroxyl ryabanje.
Umunyu wa sodium wa selulose carboxymethyl ether, anheric selulose ether, ni ifu yera cyangwa amata yifu ya fibrous yera cyangwa granule, ifite ubucucike bwa 0.5-0.7 g / cm3, hafi yumunuko, uburyohe, na hygroscopique. Biroroshye gutatanya mumazi kugirango habeho igisubizo kiboneye cya colloidal, kandi ntigishobora gukemuka mumashanyarazi kama nka Ethanol. PH yumuti wamazi 1% ni 6.5 kugeza 8.5. Iyo pH> 10 cyangwa <5, ubwiza bwa sodium carboxymethylcellulose buragabanuka cyane, kandi imikorere nibyiza mugihe pH = 7.
Irahagaze neza. Ubukonje buzamuka vuba munsi ya 20 ℃, kandi buhinduka buhoro kuri 45 ℃. Gushyushya igihe kirekire hejuru ya 80 ℃ birashobora gutandukanya colloid no kugabanya ububobere nibikorwa neza. Biroroshye gushonga mumazi, kandi igisubizo kiragaragara; irahagaze neza mumuti wa alkaline, kandi biroroshye hydrolyze imbere ya aside. Iyo pH agaciro ari 2-3, izagusha.
Igihe cyo kohereza: Ugushyingo-07-2022