CMC maka mkpuchi akwụkwọ

Sodium Carboxymethyl Cellulose (CMC)bụ ihe dị mkpa e ji eme polima mmiri na-agbaze, nke a na-ejikarị eme akwụkwọ, ákwà, nri, ọgwụ, kemịkalụ kwa ụbọchị na ngalaba ndị ọzọ. N'ime ụlọ ọrụ mmepụta akwụkwọ, ọkachasị na mkpuchi akwụkwọ (mkpuchi), CMC aghọọla otu n'ime ihe mgbakwunye mkpuchi dị mkpa n'ihi ezigbo ihe onwunwe ya na-akpụ ihe nkiri, njikọta, mgbasa na ihe onwunwe rheological.

1. Njirimara ndị bụ isi nke CMC

CMC bụ anionic cellulose ether nke e mepụtara site n'itinye otu carboxymethyl n'ime molekul cellulose dabere na cellulose eke site na usoro kemịkalụ. Ọ bụ ntụ ntụ ọcha ma ọ bụ odo odo, nke a na-agbaze ngwa ngwa na mmiri oyi, ma na-emepụta mmiri viscous doro anya. Isi ihe dị mkpa nke CMC gụnyere ogo nnọchi (DS), viscosity, ịdị ọcha, wdg, nke ogo nnọchi na-abụkarị n'etiti 0.4 na 1.4. Ka ogo nnọchi dị elu, otú ahụ ka mmiri CMC na-agbaze nke ọma; viscosity na-ekpebi ihe onwunwe rheological na oge ojiji nke ngwọta ya.

2. Ọrụ nke CMC na mkpuchi akwụkwọ

Mkpuchi akwụkwọ na-ezo aka n'itinye akwa mkpuchi nke nwere agba na ihe njikọta n'elu akwụkwọ iji melite arụmọrụ mbipụta, na-egbuke egbuke, ịdị ire ụtọ na ike izochi akwụkwọ ahụ. Dịka ihe mgbakwunye ọrụ na usoro mkpuchi ahụ, CMC nwere ọrụ ndị a:

Ihe na-ekesa ihe:CMC nwere ezigbo mgbasa ma nwee ike ịgbasa agba ndị na-adịghị mma dịka kaolin, calcium carbonate, ntụ ntụ talcum, wdg n'ime mkpuchi ahụ iji gbochie ntụpọ na mmiri ozuzo, si otú a na-eme ka mkpuchi ahụ kwụsie ike.

Ihe njide:CMC nwere ike ime ka ike njikọ dị n'etiti ihe ndị na-acha ọbara ọbara dị na mkpuchi ahụ na n'etiti pigments na eriri akwụkwọ dịkwuo mma, ma melite ike nhazi na iguzogide iyi nke mkpuchi ahụ.

Ihe na-eme ka ọkpụrụkpụ sie ike:Mmiri CMC nwere oke viscosity ma nwee ike ịgbanwe ihe ndị dị na rheological nke mkpuchi ahụ, ka o wee nwee ezigbo mmiri mmiri, gbasaa na nkwụsịtụ n'oge usoro mkpuchi ahụ.

Ihe onwunwe nke na-emepụta ihe nkiri:CMC nwere ike ịmepụta otu ihe nkiri mgbe ọ kpọchara n'elu akwụkwọ, melite ịdị mma na ịdị mma nke mkpuchi ahụ, ma melite nghọta nke onyonyo ebipụtara.

Mmanụ na uzuzu na-eguzogide:CMC nwere ike ime ka mmanu mmanu nke mkpuchi ahụ ka mma, belata iyi igwe, gbochie mmepụta uzuzu, ma melite mma nke gburugburu ebe mmepụta.

3. Ojiji na ịkpachara anya

N'ime ngwa mkpuchi akwụkwọ, enwere ụzọ ndị a maka iji CMC:

Mgbakwunye ozugbo dị ka ihe mkpuchi: Gwakọta ntụ ntụ kpọrọ nkụ nke CMC n'ime mmiri iji kwadebe njupụta nke mmiri mmiri (n'ozuzu 1%-5%), wee tinye ya na mkpuchi ahụ ma gwakọta ya nke ọma.

Jiri ya na ihe ndị ọzọ e ji ejikọta ihe: Iji mee ka arụmọrụ nke mkpuchi ahụ ka mma, a na-ejikarị CMC eme ihe na latex (dịka styrene-butadiene latex, ethylene-vinyl acetate emulsion, wdg) iji rụọ ọrụ synergistic.

Hazie njikwa viscosity: Ụdị akwụkwọ na ngwa mkpuchi dị iche iche nwere ihe dị iche iche achọrọ maka viscosity mkpuchi. Enwere ike imezu arụmọrụ achọrọ site na ịhọrọ CMC nke ọkwa viscosity dị iche iche ma ọ bụ ịgbanwe ego mgbakwunye.

Ihe ndị a ga-akpachara anya gụnyere:

Zere ịchịkọta ihe mgbe ị na-agbaze CMC. Enwere ike iji mmiri ọkụ tinye nwayọ nwayọ ma kpalie ya;

Zere ka ọ ghara ịdị irè ruo ogologo oge iji zere mmebi;

Debe ebe a na-echekwa ihe n'ime ya ka ọ kpọọ nkụ iji gbochie mmiri ịbanye na ịchịkọta ya.

4. Mmetụta ngwa nke CMC na akwụkwọ a kpụchara akpụ

Mgbe itinyechara CMC, ihe ngosi arụmọrụ niile nke mkpuchi akwụkwọ na-akawanye mma nke ukwuu:

A na-eme ka ịdị nro na mma nke elu dị mma;

A na-eme ka otu mkpuchi dịkwuo mma;

Mbipụta onyonyo ka mma, a na-emekwa ka mbipụta dịkwuo mma;

A na-eme ka ike akwụkwọ sie ike, ike nrụgide na iguzogide mpịachi ka mma;

A na-ebelata ọsọ nke mkpuchi sedimentation ma melite iguzosi ike n'ihe nchekwa.

CMCbụ ihe e ji akwụkwọ ndụ akwụkwọ ndụ mee ma dịkwa mma maka gburugburu ebe obibi nke na-emezu ihe achọrọ n'ụlọ ọrụ mmepụta akwụkwọ ọgbara ọhụrụ maka mmepe na-adịgide adịgide.

5. Usoro mmepe

Site na mmụba na-aga n'ihu nke ihe achọrọ maka akwụkwọ mkpuchi dị elu dịka akwụkwọ mkpuchi, katọn, akwụkwọ akara, wdg, mgbanwe arụmọrụ na ojiji dị irè nke CMC aghọọla ebe a na-eme nnyocha. N'ọdịnihu, site na iji ihe ọhụrụ dị ka nanomaterials na biopolymers mee ihe, a na-atụ anya na ọ ga-eme ka ọkwa ojiji nke CMC ka mma n'ọhịa mkpuchi akwụkwọ.