Carboxymethyl cellulose (CMC) inowanikwa mushure mekusanganiswa kwecellulose necarboxymethyl. Mvura yayo ine mabasa ekukora, kugadzira firimu, kubatana, kuchengetedza mvura, kudzivirira colloid, emulsification uye suspension, uye inoshandiswa zvakanyanya mumafuta, chikafu, mishonga, nezvimwewo, maindasitiri emachira nemapepa, ndeimwe ye ethers dze cellulose dzinonyanya kukosha. Natural cellulose ndiyo polysaccharide yakapararira zvakanyanya uye yakawanda, uye masosi ayo akapfuma kwazvo. Tekinoroji yekuchinja cellulose iripo ikozvino inonyanya kutarisa pa etherification uye esterification. Carboxymethylation imhando yetekinoroji ye etherification.
hunhu hwemuviri
Sodium carboxymethyl cellulose (CMC) i anionic cellulose ether, ine upfu hwefiber hwakaita seflocculent huchena kana kuti hupfu huchena hwakaita seflocculent, husina hwema, husina kunaka, hahuna chepfu; inonyungudika nyore nyore mumvura inotonhora kana mumvura inopisa, zvichiita kuti ive mhinduro yakajeka. Mhinduro iyi haina kusimba kana kuti ine alkaline zvishoma, hainyungudike mu ethanol, ether, isopropanol, acetone nezvimwe zvinonyungudutsa zve organic, inonyungudika mu 60% ethanol ine mvura kana acetone solution. Iine hygroscopic, yakasimba pachiedza nekupisa, viscosity inoderera nekuwedzera kwekupisa, mhinduro yacho yakagadzikana pa pH 2-10, pH yakaderera pane 2, kune mvura yakasimba, uye viscosity inoderera kana pH yakakwira kupfuura 10. Tembiricha yekuchinja ruvara i227℃, tembiricha yecarbonization i252℃, uye kushushikana kwemvura ye2% solution yemvura i71mn/n.
hunhu hwemakemikari
Inogadzirwa kubva muzvinhu zvinobva mu cellulose zvinobva mu carboxymethyl substituents, ichirapa cellulose ne sodium hydroxide kuti igadzire alkali cellulose, yobva yaita reactive ne monochloroacetic acid. Glucose unit inoumba cellulose ine mapoka matatu ehydroxyl anogona kutsiviwa, saka zvigadzirwa zvine mwero wakasiyana wekutsiva zvinogona kuwanikwa. Paavhareji, 1 mmol ye carboxymethyl yakaunzwa pa 1 g yehuremu hwakaoma, iyo isinganyungudike mumvura uye inonyungudutsa acid, asi inogona kuzvimba uye inoshandiswa pa ion exchange chromatography. Carboxymethyl pKa inenge 4 mumvura yakachena uye inenge 3.5 mu 0.5mol/L NaCl. I acidic cation exchanger isina simba uye inowanzo shandiswa pakuparadzanisa mapuroteni asina kusimba uye ekutanga pa pH>4. Mapoka ehydroxyl anopfuura 40% anotsiviwa nemapoka e carboxymethyl, anogona kunyungudutswa mumvura kuti agadzire stable high-viscosity colloidal solution.
Chinangwa chikuru
Carboxymethyl cellulose (CMC) ihupfu huchena husina chepfu uye husina hwema hune simba rakagadzikana uye hunonyungudika nyore nyore mumvura. Mvura yayo ine mvura imvura ine viscous isina kusimba kana alkaline, inonyungudika mune mamwe manamatisi anonyungudika mumvura uye isinganyungudike. mune zvinonyungudika zve organic zvakaita se ethanol. CMC inogona kushandiswa se glue, thickener, suspending agent, emulsifier, dispersant, stabilizer, size agent, nezvimwewo.
Sodium carboxymethyl cellulose (CMC) ndicho chigadzirwa chine simba guru, chinoshandiswa zvakanyanya uye chiri nyore kushandisa pakati pe cellulose ethers, inozivikanwa se "industrial monosodium glutamate".
1. Inoshandiswa pakuchera mafuta negasi rechisikigo, kuchera matsime nemamwe mapurojekiti
① Madhaka ane CMC anogona kuita kuti madziro etsime ave keke refirita rakatetepa uye rakasimba risina mvura yakawanda, izvo zvinoderedza kurasikirwa kwemvura.
② Mushure mekuwedzera CMC mumatope, gomba rekuchera rinogona kuwana simba shoma rekutanga, kuitira kuti matope akwanise kuburitsa gasi rakaputirwa mariri zviri nyore, uye panguva imwe chete, marara anoraswa nekukurumidza mugomba rematope.
③Kuchera matope, semamwe madhiraivha ekunyungudutsa, kune nguva yakatarwa yekuvapo, uye kuwedzerwa kweCMC kunogona kuita kuti igare yakasimba uye kuwedzera nguva yekuvapo.
④ Madhaka ane CMC haawanzo kukanganiswa nefungus, saka hazvidikanwi kuchengetedza pH yakakwira uye kushandisa zvinochengetedza.
⑤ Ine CMC senzira yekuchenesa mvura yekuchenesa matope, iyo inogona kuramba kusvibiswa kwemunyu wakasiyana-siyana unonyunguduka.
⑥ Madhaka ane CMC ane kugadzikana kwakanaka uye anogona kuderedza kurasikirwa nemvura kunyangwe tembiricha iri pamusoro pe150℃.
CMC ine viscosity yakakura uye ine mwero wepamusoro wekutsiva yakakodzera ivhu rine density shoma, uye CMC ine viscosity shoma uye ine mwero wepamusoro wekutsiva yakakodzera ivhu rine density yakawanda. Sarudzo yeCMC inofanira kusarudzwa zvichienderana nemamiriro akasiyana akadai serudzi rwevhu, nzvimbo uye kudzika kwetsime.
2. Inoshandiswa muindasitiri yemachira, kudhinda uye kudhaya. Indasitiri yemachira inoshandisa CMC senzira yekuisa saizi yeshinda diki dzedonje, mvere dzesiriki, makemikari fiber, zvakasanganiswa nezvimwe zvinhu zvakasimba;
3. Inoshandiswa muindasitiri yemapepa CMC inogona kushandiswa senzira yekutsvedzerera pamusoro pepepa uye senzira yekuisa saizi muindasitiri yemapepa. Kuwedzera 0.1% kusvika 0.3% CMC mupuripu kunogona kuwedzera simba rekudhonza kwepepa ne40% kusvika 50%, kuwedzera kudzvanywa kwekumanikidzwa ne50%, uye kuwedzera kugona kukwesha neka4 kusvika kashanu.
4. CMC inogona kushandiswa semushonga unonyungudutsa tsvina kana ikaiswa muzvinwiwa zvinogadzirwa; makemikari ezuva nezuva akadai semuchina wemazino CMC glycerin mvura inoshandiswa sehwaro hwemazino emazino; indasitiri yemishonga inoshandiswa semuchina unonyungudutsa uye unosanganisa makemikari; CMC mvura inonyungudutsa inogochwa uye inoshandiswa pakugadzira zvicherwa zvinoyangarara, nezvimwewo.
5. Muindasitiri yezvedongo, inogona kushandiswa sechinamira, purasitiki, chinhu chinomisa glaze, chinhu chinogadzirisa mavara, nezvimwewo.
6. Inoshandiswa mukuvaka kuvandudza kuchengetwa kwemvura uye simba rayo
7. Inoshandiswa muindasitiri yezvekudya. Bhizinesi rezvekudya rinoshandisa CMC ine mwero wepamusoro wekuwedzera chinwiwa ichi mu ice cream, chikafu chemumagaba, manoodles akabikwa nekukurumidza, uye foam stabilizer yedoro, nezvimwewo. Kune zvinogocha, zvinosunga kana zvinosanganisa chikafu.
8. Indasitiri yemishonga inosarudza CMC ine viscosity yakakodzera semushonga wekubatanidza mapiritsi, kubvisa mishonga, uye kumisa mishonga yekumisa mishonga.
Nguva yekutumira: Mbudzi-03-2022