Kedu usoro mmepụta nke methylcellose?

Methylcellose (mc) bụ polymer-soluble nke eji ọtụtụ nri, ọgwụ, kemịkalụ, na-arụ ọrụ na ọrụ ndị ọzọ. Usoro mmepụta ya gụnyere ọtụtụ usoro, tumadi gụnyere mmịpụta cellulose, mmeghachi omume, ihicha na ịzọpịa.

1. Mmepụta nke cellose
Ihe dị mkpa na methylcellose bụ sel cellulose, nke a na-enweta site na osisi pulp ma ọ bụ owu. Nke mbu, a na-edobe osisi ma ọ bụ owu na usoro iji wepu adịghị ọcha (dị ka Liminin, Retuin, protein) iji nweta ọcha cellulose. Firstzọ ndị a na-ahụkarị na-emetụta usoro acid-base na usoro enzymatic. N'ime usoro acid-barcy, a na-emeso osisi purp na sodium hydroxide (NaOh) ma ọ bụ ihe ngwọta alkaline ndị ọzọ iji gbazee Lignin na adịghị ike, na-ewepụta cellulose.

2. Mmeghachi omume nke Cellulose
Na-esote, mmeghachi omume methylation (mmeghachi omume gị) na-rụrụ iji kwadebe methylcelllose. Isi nzọụkwụ nke mmeghachi omume nke ihe ga - eme ka cellulose na - echekwara methylatide (na methyl chloride, methyl iodide, wdg) iji nweta methylcellose. Ọrụ a kapịrị ọnụ bụ ndị a:

A na-ejikarị usoro mmeghachi omume: dị ka mmiri, ethanol ma ọ bụ ihe mgbazi mmiri dị ka usoro mmeghachi omume, yana dịka sodium hydroxide) mgbe ụfọdụ ka ọ na-agbakwunye arụmọrụ arụmọrụ.
Ọnọdụ mmeghachi omume: Ihe a na-eme na ụfọdụ okpomọkụ na nrụgide, yana ọnọdụ ọnọdụ mbụ a bụ 50-70 Celsius C. N'oge mmeghachi omume, Metyl chloride meghachi omume na hydroxyl (-Ov) ndị otu molules iji gbanwee ya n'ime Methyl cellulose.
Njikwa mmeghachi omume: Mmeghachi omume methylation chọrọ njide mmeghachi omume na ọnọdụ okpomọkụ. Oge mmeghachi omume ogologo oge ma ọ bụ oke okpomọkụ nwere ike ibute nrụrụ Cellulose, ebe oke okpomọkụ ma ọ bụ mmeghachi zuru oke ma ọ bụ mmeghachi ezughi oke nwere ike ibute arụmọrụ nke methyl cellulose.

3. Ọpụiche na nhicha
Mgbe mmeghachi omume ahụ agwụla, Reethylation na-atụghị anya na nchọpụta nwere ike ịdị na methy cellulose ngwaahịa, nke kwesịrị ịdị ọcha. Usoro na-apụnara ihe na-ejikarị acidic acidic (dịka acetic acid acù) iji kpochapụ ihe ndị ahụ na alkaline na ngwaahịa mmeghachi omume. Usoro nhicha ahụ na-eji mmiri buru ibu ma ọ bụ mmanya iji wepu ihe ndozi, kemịkalụ kemịkal na ngwaahịa site na mmeghachi omume iji hụ na ịdị ọcha nke ngwaahịa ikpeazụ.

4. Ihicha ma na-echi
Mgbe ịsachasịrị, methylllose na-abụkarị na magazin ma ọ bụ gel, yabụ ọ dị mkpa ka akpọnwụ ngwaahịa. E nwere ọtụtụ ụzọ iji kpọọ nkụ, ndị a na-ejikarị ha na-agba nkụ, ihicha nkụ na nkụ. N'oge a na-asa mmiri, ọ dị mkpa ịchịkwa ọnọdụ okpomọkụ ahụ iji zere ibibi ihe site na oke okpomọkụ ma ọ bụ mebie nke GEL Njirimara.

Mgbe ihichachara, a ga-eme ka ihe methylcelllose a ga-eteta ya iji nweta nha achọrọ. A na-emechaa usoro a na-egbu egbu site na igwe ikuku ma ọ bụ igwe. Site na ịchịkwa urughuru nha, ọnụego ụkọ na njirimara viscosis nke methylcellose enwere ike idozi.

5. Nnyocha na nkwakọ ngwaahịa nke ngwaahịa ikpeazụ
Mgbe ịzọpịa, methylllose kwesịrị inwe njikwa ịdị mma siri ike iji hụ na ọ na-ezute nkọwapụta teknụzụ. Ihe ndị na-enyocha ihe gụnyere:

Ọdịnaya Mmiri: Ọ dị oke mmiri ọdịnaya nke methylcellose ga-emetụta nkwụsi ike na nchekwa ya.
Nketa nha nkesa: nha na nkesa nke ụmụ irighiri ihe ga-emetụta mbọ nke methylcellose.
Ogo nke methylation: ogo nke methylation bụ ihe ngosipụta na-egosi ịdị mma nke methylcellose, na-emetụta ya na arụmọrụ ngwa ya.
Solubality na viscosity: solubality nke viscosite nke methylcosise bụ paramita dị mkpa na ya, ọkachasị n'ubi nri na ọgwụ.
Mgbe ha gafere nyocha ahụ, a ga-akpọkọta ngwaahịa ahụ dị ka mkpa dị iche iche si dị, na-abụkarị akpa ma ọ bụ akpa akwụkwọ, ma jiri nọmba ọpụpụ, nkọwapụta na ozi ndị ọzọ.

6. Nchedo gburugburu na nchekwa
N'oge mmepụta nke Methyl Cellulose, usoro nchebe gburugburu ebe obibi kwesịrị ka ewere ya, ọkachasị maka kemịkalụ na ndị na-edozi ahụ. Mgbe mmeghachi omume, mmiri mmiri na-emebi emebi na ikuku na-emebi emebi iji zere imetọ gburugburu ebe obibi. Na mgbakwunye, a ga-arụ ọrụ ndị na-eme ihe nkiri na usoro mmepụta ahụ dabere na usoro nrụpụta nchekwa iji hụ na nchekwa nke ndị ọrụ.

Usoro mmepụta nke methyl cellulose karịa gụnyere mkpụrụ cellulose, mmeghachi omume methy, ịsacha na nkpuchi, ihicha na mgbawa. Njikọ ọ bụla nwere mmetụta dị mkpa na ogo nke ngwaahịa ikpeazụ, yabụ njikwa ma na-eleba anya na usoro imepụta dị oke egwu. Site na usoro usoro ndị a, enwere ike ịmepụta ngwa chọrọ ngwa dị iche.