Carboxymethylcellulose (CMC) uye methylcellulose (MC) ese ari maviri anobva ku cellulose, yakasikwa polymer inowanikwa musero madziro emiti.Izvi zvinobva zvawana kushandiswa kwakakura mumaindasitiri akasiyana nekuda kwezvakasiyana zvivakwa.Kunyangwe kugovana zvakafanana, CMC neMC vane misiyano yakasiyana mune yavo makemikari zvimiro, zvivakwa, mashandisiro, uye mashandisirwo emaindasitiri.
1.Chemical Structure:
Carboxymethylcellulose (CMC):
CMC inogadzirwa ne etherification ye cellulose ine chloroacetic acid, zvichikonzera kutsiviwa kwemapoka e-hydroxyl (-OH) pane cellulose musana nemapoka e-carboxymethyl (-CH2COOH).
Iyo dhigirii yekutsiva (DS) muCMC inoreva huwandu hweavhareji yemapoka ecarboxymethyl pachikamu cheglucose mucheni ye cellulose.Iyi parameter inosarudza zvimiro zveCMC, kusanganisira solubility, viscosity, uye rheological maitiro.
Methylcellulose (MC):
MC inogadzirwa nekutsiviwa kwemapoka ehydroxyl mu cellulose ne methyl mapoka (-CH3) kuburikidza ne etherification.
Zvakafanana neCMC, zvimiro zveMC zvinopesvedzerwa nedhigirii rekutsiva, iro rinotarisa huwandu hwemethylation pamwe neketani ye cellulose.
2.Solubility:
Carboxymethylcellulose (CMC):
CMC inonyungudika mumvura uye inoita yakajeka, viscous mhinduro.
Kunyungudika kwayo kunoenderana nepH, ine yakanyanya kunyungudika mumamiriro ealkaline.
Methylcellulose (MC):
MC inonyungudika mumvura, asi kunyungudika kwayo kunoenderana nekushisa.
Kana yakanyungudutswa mumvura inotonhora, MC inoumba gel, iyo inonyungudika inonyungudika pakupisa.Ichi chivakwa chinoita kuti ive yakakodzera kune maapplication anoda controlled gelation.
3.Viscosity:
CMC:
Inoratidza yakakwira viscosity mune aqueous mhinduro, zvichibatsira mukukora kwayo.
Viscosity yayo inogona kugadziridzwa nekugadzirisa zvinhu zvakaita sekutarisa, dhigirii rekutsiva, uye pH.
MC:
Inoratidza viscosity maitiro akafanana neCMC asi kazhinji haina viscous.
Iyo viscosity yeMC mhinduro inogona zvakare kudzorwa nekuchinja ma parameter senge tembiricha uye kutarisisa.
4.Film Formation:
CMC:
Inogadzira mafirimu akajeka, anochinjika kana akakandwa kubva kune ayo ane aqueous mhinduro.
Aya mafirimu anowana maapplication mumaindasitiri akadai sekudya kurongedza nemishonga.
MC:
Zvakare anokwanisa kugadzira mafirimu asi anowanzoita brittle zvichienzaniswa neCMC mafirimu.
5.Indasitiri Yezvekudya:
CMC:
Inoshandiswa zvakanyanya seyakagadzika, thickener, uye emulsifier muzvigadzirwa zvekudya senge ice cream, sosi, uye mapfekero.
Kugona kwayo kugadzirisa magadzirirwo uye muromo wezvikafu zvinoita kuti zvive zvakakosha mukugadzira chikafu.
MC:
Inoshandiswa kune zvakafanana zvinangwa seCMC mune zvigadzirwa zvekudya, kunyanya mumashandisirwo anoda kuumbwa kwegel uye kudzikamiswa.
6.Pharmaceuticals:
CMC:
Inoshandiswa mukugadzirwa kwemishonga sebhainda, disintegrant, uye viscosity modifier mukugadzira piritsi.
Inoshandiswawo mukuumbwa kwemusoro senge makirimu uye gels nekuda kweiyo rheological properties.
MC:
Inowanzo shandiswa seyakakora uye gelling agent mumishonga, kunyanya mumuromo mvura mishonga uye ophthalmic mhinduro.
7.Personal Care Products:
CMC:
Inowanikwa mune zvakasiyana siyana zvekuchengeta zvinhu senge mushonga wemazino, shampoo, uye lotions seyakagadzikana uye thickening agent.
MC:
Inoshandiswa mumashandisirwo akafanana neCMC, ichibatsira mukuumbwa uye kugadzikana kwemaitiro ekutarisira ega.
8.Industrial Applications:
CMC:
Inoshandirwa mumaindasitiri akadai semachira, mapepa, uye ceramics nekuda kwekugona kwayo kuita sebhainda, rheology modifier, uye mumiriri wekuchengetedza mvura.
MC:
Inowana kushandiswa mukuvaka, pendi, uye zvinonamira nekuda kwekukora uye kusunga kwayo.
nepo carboxymethylcellulose (CMC) uye methylcellulose (MC) ese ari maviri anobva ku cellulose ane akasiyana maindasitiri ekushandisa, anoratidza mutsauko mumakemikari avo, solubility maitiro, viscosity profiles, uye mashandisirwo.Kunzwisisa misiyano iyi kwakakosha pakusarudza chinobvamo chakakodzera chekushandiswa kwakasiyana mumaindasitiri akasiyana, kubva pachikafu nemishonga kusvika pakutarisira wega uye maindasitiri ekushandisa.Kunyangwe kuri kudiwa kwepH-sensitive thickener seCMC muzvigadzirwa zvechikafu kana tembiricha-inopindura gelling agent seMC mukugadzirwa kwemishonga, imwe neimwe inobuda inopa mabhenefiti akasiyana anoenderana nezvinodiwa chaizvo muzvikamu zvakasiyana.
Nguva yekutumira: Mar-22-2024