Qhov sib txawv ntawm Sodium CMC, Xanthan Gum thiab Guar Gum

Sodium carboxymethyl cellulose (CMC), xanthan gum, thiab guar gum yog txhua yam siv hydrocolloids nrog ntau yam kev siv hauv cov khoom noj, tshuaj, tshuaj pleev ib ce, thiab kev lag luam. Thaum lawv qhia qee qhov zoo sib xws ntawm lawv cov thickening, stabilizing, thiab gelling zog, kuj tseem muaj qhov sib txawv ntawm lawv cov qauv tshuaj, qhov chaw, kev ua haujlwm, thiab kev siv. Cia peb tshawb nrhiav qhov sib txawv ntawm peb cov hydrocolloids no:

1. Chemical Structure:

• Sodium Carboxymethyl Cellulose (CMC): CMC yog cov dej-soluble derivative ntawm cellulose, uas yog ib tug polysaccharide muaj li ntawm rov qab qab zib units. Carboxymethyl pawg (-CH2-COOH) tau nkag mus rau hauv cov pob txha cellulose los ntawm cov tshuaj tiv thaiv etherification, faib dej solubility thiab ua haujlwm rau cov khoom siv polymer.
• Xanthan Gum: Xanthan gum yog microbial polysaccharide tsim los ntawm fermentation los ntawm cov kab mob Xanthomonas campestris. Nws muaj qhov rov ua dua ntawm cov piam thaj, mannose, thiab glucuronic acid, nrog rau cov saw hlau uas muaj mannose thiab glucuronic acid residues. Xanthan cov pos hniav paub txog nws qhov hnyav molecular thiab cov khoom tshwj xeeb rheological.
• Guar Gum: Guar gum yog muab los ntawm endosperm ntawm guar taum (Cyamopsis tetragonoloba). Nws yog tsim los ntawm galactomannan, ib tug polysaccharide uas muaj ib tug linear saw ntawm mannose units nrog galactose sab chains. Guar cov pos hniav muaj qhov hnyav molecular thiab tsim cov kua nplaum thaum muaj dej.

2. Qhov chaw:

• CMC yog muab los ntawm cellulose, ib tug natural polymer pom nyob rau hauv cov nroj tsuag cell phab ntsa.
• Xanthan gum yog tsim los ntawm microbial fermentation ntawm carbohydrates los ntawm Xanthomonas campestris.
• Guar gum yog tau los ntawm endosperm ntawm guar taum.

3. Kev ua haujlwm:

• Sodium Carboxymethyl Cellulose (CMC):
  • Ua raws li cov thickener, stabilizer, binder, thiab zaj duab xis-yav dhau los hauv ntau daim ntawv thov.
  • Daim ntawv pob tshab thiab thermally reversible gels.
  • Qhia txog pseudoplastic flow cwj pwm.
• Xanthan Gum:
  • Muaj nuj nqi ua cov thickener, stabilizer, emulsifier, thiab suspending agent.
  • Muab cov viscosity zoo tswj thiab shear-thinning tus cwj pwm.
  • Tsim cov viscous daws thiab cov gels ruaj khov.
• Guar Gum:
  • Ua raws li cov thickener, stabilizer, binder, thiab emulsifier.
  • Muab siab viscosity thiab pseudoplastic flow cwj pwm.
  • Tsim cov viscous daws thiab cov gels ruaj khov.

4. Solubility:

• CMC yog heev soluble nyob rau hauv dej txias thiab kub, tsim kom meej meej thiab viscous daws.
• Xanthan cov pos hniav yog soluble hauv dej txias thiab kub, nrog zoo heev dispersibility thiab hydration zog.
• Guar cov pos hniav nthuav tawm kev txwv tsis pub solubility hauv dej txias tab sis disperses zoo hauv dej kub los tsim cov kua nplaum.

5. Kev ruaj ntseg:

• CMC cov kev daws teeb meem yog ruaj khov nyob rau ntau yam ntawm pH thiab kub kub.
• Xanthan cov pos hniav daws tau ruaj khov tshaj pH ntau yam thiab tiv taus cua sov, shear, thiab electrolytes.
• Guar gum solutions tuaj yeem txo qis kev ruaj ntseg ntawm pH tsawg lossis nyob rau hauv muaj cov ntsev ntau los yog calcium ions.

6. Daim ntawv thov:

• Sodium Carboxymethyl Cellulose (CMC): Siv nyob rau hauv cov khoom noj (xws li, kua ntses, hnav khaub ncaws, bakery), kws tshuaj (xws li, ntsiav tshuaj, ncua kev kawm ntawv), tshuaj pleev ib ce (xws li, cream, tshuaj pleev ib ce), textiles, thiab industrial daim ntaub ntawv (xws li, ntawv, detergents). ).
• Xanthan Gum: Siv dav hauv cov khoom noj khoom haus (xws li, hnav khaub ncaws hnav khaub ncaws, kua ntses, khoom noj siv mis), tshuaj (xws li, kev ncua, kev saib xyuas qhov ncauj), tshuaj pleev ib ce (xws li, cream, tshuaj txhuam hniav), roj drilling kua, thiab lwm yam kev siv hauv kev lag luam.
• Guar Gum: Siv nyob rau hauv cov khoom noj (xws li, ci, khoom noj siv mis, dej haus), tshuaj (xws li, ntsiav tshuaj, ncua kev kawm ntawv), tshuaj pleev ib ce (xws li, cream, lotions), textile printing, thiab hydraulic fracturing fluids nyob rau hauv cov roj kev lag luam.

Xaus:

Thaum sodium carboxymethyl cellulose (CMC), xanthan cov pos hniav, thiab guar cov pos hniav qhia qee qhov zoo sib xws hauv lawv cov kev ua haujlwm thiab kev siv raws li hydrocolloids, lawv kuj pom qhov sib txawv ntawm lawv cov qauv tshuaj, qhov chaw, khoom, thiab kev siv. Kev nkag siab txog qhov sib txawv no yog qhov tseem ceeb rau kev xaiv cov hydrocolloid uas tsim nyog tshaj plaws rau cov ntawv thov tshwj xeeb hauv ntau qhov kev lag luam. Txhua hydrocolloid muaj qhov tshwj xeeb zoo thiab cov yam ntxwv ua tau zoo uas tuaj yeem tsim kho kom tau raws li qhov xav tau ntawm cov qauv sib txawv thiab cov txheej txheem.