Usoro Mkpebi Mgbanwe nke Sodium Carboxymethyl Cellulose

Ịchọpụta ogo ngbanwe (DS) nke sodium carboxymethyl cellulose (CMC) dị oké mkpa maka njikwa mma yana ịhụ nkwụsi ike na njirimara ya na arụmọrụ ya. Enwere ike iji ọtụtụ ụzọ chọpụta DS nke CMC, yana titration na usoro spectroscopic bụ nke a na-ejikarị arụ ọrụ. Nke a bụ nkọwa zuru ezu nke usoro titration maka ikpebi DS nke sodium CMC:

1. Ụkpụrụ:

• Usoro titration na-adabere na mmeghachi omume dị n'etiti otu carboxymethyl na CMC yana ngwọta ọkọlọtọ nke ntọala siri ike, nke bụ sodium hydroxide (NaOH), n'okpuru ọnọdụ a na-achịkwa.
• Otu Carboxymethyl (-CH2-COOH) na CMC na-emeghachi omume na NaOH iji mepụta sodium carboxylate (-CH2-COONa) na mmiri. Ogologo mmeghachi omume a dabara na ọnụ ọgụgụ nke carboxymethyl dị na molekul CMC.

2. Reagents na Akụrụngwa:

• Sodium hydroxide (NaOH) ngwọta ọkọlọtọ nke ntinye ama ama.
• Ihe atụ CMC.
• Acid-base egosi (dịka ọmụmaatụ, phenolphthalein).
• Burette.
• Ihe mkpuchi conical.
• Mmiri distilled.
• Stirrer ma ọ bụ magnetik stirrer.
• Ntụle nyocha.
• pH mita ma ọ bụ akwụkwọ egosi.

3. Usoro:

1. Nkwadebe ihe atụ:
   • Tulee ụfọdụ ihe nlele CMC nke ọma site na iji ntule nyocha.
   • Gbanyụọ ihe nlele CMC n'ime oke mmiri a maara nke ọma iji kwadebe ihe ngwọta nke ntinye ama ama. Gbaa mbọ hụ na ị ga-agwakọta nke ọma ka ị nweta ihe ngwọta otu.
2. Titration:
   • Pipette olu a tụrụ atụ nke ngwọta CMC n'ime flask conical.
   • Tinye ntakịrị ntakịrị ihe ngosi acid-base (dịka ọmụmaatụ, phenolphthalein) na flask. Ihe ngosi kwesịrị ịgbanwe agba na njedebe nke titration, na-adịkarị gburugburu pH 8.3-10.
   • Titrate CMC ngwọta na ọkọlọtọ NaOH ngwọta site na burette na-akpali akpali mgbe niile. Dekọọ olu nke ngwọta NaOH agbakwunyere.
   • Gaa n'ihu na titration ruo mgbe a ga-eru njedebe, nke ngbanwe agba na-adịgide adịgide gosipụtara.
3. Mgbakọ:
   • Gbakọọ DS nke CMC site na iji usoro a:
   $��=�\times �\times �NaOH�CMC$

   DS=mCMCV×N×MNaOH

   Ebe:

   • $��$

     DS = ogo nke nnọchi.

   • $�$

     V = Olu nke ngwọta NaOH ejiri (na lita).

   • $�$

     N = Nkịtị nke ngwọta NaOH.

   • $�NaOH$

     MNaOH = arọ molekụla nke NaOH (g/mol).

   • $�CMC$

     mCMC = Mass nke nlele CMC ejiri (na gram).

4. Ntụgharị asụsụ:
   • DS gbakọrọ na-anọchi anya nkezi ọnụọgụ nke otu carboxymethyl kwa nkeji glucose dị na molekul CMC.
   • Tinyegharịa nyocha ahụ ọtụtụ oge wee gbakọọ nkezi DS iji hụ na izi ezi na ntụkwasị obi nke nsonaazụ ya.

4. Echiche:

• Gbaa mbọ hụ na nhazi akụrụngwa nke ọma na nhazi nke reagents maka nsonaazụ ziri ezi.
• Jiri nlezianya jikwaa ngwọta NaOH n'ihi na ọ bụ caustic ma nwee ike ibute ọkụ.
• Mee titration n'okpuru ọnọdụ a na-achịkwa iji belata mperi na mgbanwe.
• Kwado usoro a site na iji ụkpụrụ ntụnye aka ma ọ bụ nyocha ntụnyere na ụzọ ndị ọzọ akwadoro.

Site n'ịgbaso usoro titration a, enwere ike ikpebi ogo nnọchi nke sodium carboxymethyl cellulose (CMC) nke ọma, na-enye ozi bara uru maka njikwa mma na ebumnuche nhazi n'ime ụlọ ọrụ dị iche iche.