Musiyano Pakati peCMC neMHEC

Carboxymethylcellulose (CMC) uye Methyl hydroxyethyl cellulose (MHEC) marudzi maviri akajairwa ezvinobva muselulosi anoshandiswa zvakanyanya mumaindasitiri akasiyana. Ivo vanogovana zvimwe zvakafanana muchimiro chavo chemakemikari uye zvimiro zvemuviri, asi ivo zvakare vane mimwe misiyano yakakosha inoita kuti ive yakakodzera kune akasiyana maapplication. Muchinyorwa ichi, tichaongorora mutsauko uripo pakati peCMC neMHEC.

Mushonga Wemakemikari
Ose maviri CMC neMHEC ma cellulose anobva kune anonyungudika nemvura mapolymer. CMC inotorwa kubva ku cellulose nekuita nayo ne chloroacetic acid kuunza mapoka ecarboxymethyl, nepo MHEC inotorwa kubva muselulosi nekuita nayo ne ethylene oxide uye methyl chloride kuunza methyl uye hydroxyethyl mapoka.

Solubility
Imwe yemisiyano mikuru pakati peCMC neMHEC kunyungudika kwavo mumvura. CMC inonyungudika zvakanyanya mumvura uye inogona kuumba yakajeka, viscous mhinduro kunyangwe pakadzika kudzikira. Kusiyana neizvi, MHEC hainyanyi kunyungudika mumvura kupfuura CMC uye kazhinji inoda kushandiswa kwechinhu chinonyungudutsa, senge ethanol kana isopropyl alcohol, kuti iparadze zvachose.

Viscosity
Dzese CMC neMHEC zvinogona kukora mhinduro dzemvura uye kuwedzera viscosity. Nekudaro, CMC ine yakakwira viscosity kupfuura MHEC, uye inogona kuumba yakawanda gel-kufanana kuenderana kana yakanyungudika mumvura. Izvi zvinoita kuti CMC ive yakanaka kuti ishandiswe mumashandisirwo panodiwa kukora kana gelling, senge muindasitiri yechikafu yekugadzira sosi nemapfekero. MHEC, kune rumwe rutivi, ine yakaderera viscosity pane CMC uye inowanzo shandiswa seyakakora kana rheology modifier mumashandisirwo panodiwa mhinduro isina viscous.

pH Kugadzikana
CMC inowanzo kugadzikana pamusoro pehupamhi hwakawanda hwepH kukosha kupfuura MHEC. CMC yakagadzikana mune ese aridhi uye alkaline nharaunda, izvo zvinoita kuti ive yakakodzera kushandiswa muindasitiri yezvekudya, uko pH hunhu hunogona kusiyana zvakanyanya. Kusiyana neizvi, MHEC yakanyanya kugadzikana mune zvishoma acidic kune isina kwayakarerekera pH nharaunda uye inogona kuputsa kune yakakwirira pH kukosha.

Tembiricha Kugadzikana
Ose ari maviri CMC neMHEC akagadzikana pamusoro pemhando dzakasiyana dzetembiricha, asi pane misiyano mukugadzikana kwavo kwekupisa. CMC yakagadzikana zvakanyanya kupfuura MHEC uye inogona kuchengetedza zvivakwa zvayo patembiricha yepamusoro. Izvi zvinoita kuti CMC ive yakanaka kuti ishandiswe mukushandisa uko kupisa kwakanyanya kunobatanidzwa, senge mukugadzirwa kwezvinhu zvakabikwa. MHEC, kune rumwe rutivi, ine yakaderera thermal kugadzikana pane CMC uye inogona kuputsika patembiricha yakakwira.

Applications
Ose ari maviri CMC neMHEC anoshandiswa mumhando dzakasiyana dzekushandisa mumaindasitiri akasiyana. CMC inowanzoshandiswa seyakakora, stabilizer, uye emulsifier muindasitiri yechikafu kune zvigadzirwa zvakaita seaizikirimu, sosi, uye mapfekero. Inoshandiswawo muindasitiri yemishonga sebhainda, disintegrant, uye kumisa mumiririri. MHEC inowanzo shandiswa seyakakora, binder, uye rheology modifier muindasitiri yekuvaka yezvigadzirwa zvakaita sependi, machira, uye zvinonamira. Inoshandiswawo muindasitiri yemishonga sebhainda, disintegrant, uye inosimudzira-kuburitsa mumiririri.

Mukupedzisa, CMC neMHEC zvidimbu zviviri zveselulosi zvinogovana zvimwe zvakafanana muchimiro chavo chemakemikari uye zvimiro zvemuviri asi zvine misiyano yakasiyana mukunyungudika kwavo, viscosity, kugadzikana kwepH, kugadzikana kwekushisa, uye mashandisirwo.