Polyanionic cellulose (PAC) bụ ihe a na-emepụta site na cellulose, nke bụ polymer na-emekarị na mgbidi cell nke osisi.Ihe mejupụtara cellulose bụ nkeji glucose ugboro ugboro jikọtara ọnụ site na njikọ beta-1,4-glycosidic, na-akpụ agbụ ogologo.Ọ bụ otu n'ime ihe ndị na-emepụta ihe na-emepụta ihe na ụwa ma na-eje ozi dị ka ihe nhazi na osisi.A na-emepụta cellulose polyanionic site na cellulose site na usoro mmeghachi omume kemịkalụ na-ewebata otu anionic n'ime ọkpụkpụ azụ cellulose.Ndị otu anionic ndị a na-enye PAC ihe pụrụ iche ya ma mee ka ọ baa uru na ngwa ụlọ ọrụ dị iche iche.
1.Chemical Structure na Synthesis:
A na-emepụta cellulose polyanionic site na etherification ma ọ bụ esterification nke cellulose.N'oge etherification, a na-eji otu ether dochie otu hydroxyl (-OH) na agbụ cellulose, nke bụkarị carboxymethyl (-CH2COOH) ma ọ bụ otu carboxyethyl (-CH2CH2COOH).Usoro a na-ewebata ebubo na-adịghị mma na ọkpụkpụ azụ cellulose, na-eme ka ọ bụrụ mmiri na-edozi ya na ebubo na-ezighị ezi n'ozuzu ya.Ogo nke nnọchi (DS), nke na-ezo aka na nkezi ọnụọgụ nke otu hydroxyl nọchiri anya otu glucose, enwere ike ịchịkwa iji hazie njirimara PAC maka ngwa akọwapụtara.
2. Njirimara:
Mmiri Solubility: Otu n'ime ihe ndị bụ isi nke PAC bụ mmiri solubility ya, nke sitere na ntinye nke ìgwè anionic.Solubility a na-eme ka PAC dị mfe ijikwa yana itinye n'ime sistemu mmiri.
Njikwa Rheological: A maara PAC maka ike ọ gbanwee njirimara rheological nke mmiri.Ọ nwere ike rụọ ọrụ dị ka ihe na-eme ka ọ sie ike, na-eme ka viscosity dịkwuo mma ma na-achịkwa usoro mmiri.Ngwongwo a bara uru karịsịa na ụlọ ọrụ dị ka igwu mmanụ, ebe a na-eji PAC na-egwupụta apịtị iji kwado nkwụsi ike nke olulu mmiri yana ịchịkwa mfu mmiri.
Njikwa nzacha: PAC nwekwara ike ịrụ ọrụ dị ka onye na-ahụ maka njikwa nzacha, na-enyere aka igbochi ọnwụ nke siri ike n'oge usoro nhazi.Ngwongwo a bara uru na ulo oru dika ngwuputa ihe na ikpochapu mmiri.
pH Stability: PAC na-egosipụta nkwụsi ike n'elu oke pH, nke na-enye aka na ntụgharị ya na ngwa dị iche iche.
Ndakọrịta: PAC dakọtara na ọtụtụ kemịkalụ na mgbakwunye ndị ọzọ a na-ejikarị na usoro mmepụta ihe.
3. Ngwa:
Ụlọ ọrụ mmanụ na gas: A na-eji PAC eme ihe n'ọtụtụ ebe na ụlọ ọrụ mmanụ na gas, karịsịa n'ịgba mmiri mmiri (apịtị).Ọ na-arụ ọrụ dị ka viscosifier, onye na-ahụ maka njikwa ihe na-efunahụ mmiri, yana ihe mgbochi shale, na-enyere aka ịkwalite ọrụ mkpọpu ma nọgide na-eguzosi ike n'ezi ihe.
Ihe owuwu: N'ime ụlọ ọrụ ihe owuwu, a na-eji PAC arụ ọrụ na ngwa cimenting iji kwalite njirimara rheological nke ciment slurries.Ọ na-eme ka pumpability dịkwuo mma, na-ebelata mfu mmiri, ma na-eme ka ike njikọ ciment dịkwuo elu.
Pharmaceuticals: PAC na-achọta ngwa n'ụdị usoro ọgwụ dị ka ihe na-ekekọta n'ichepụta mbadamba nkume yana dị ka ihe ngbanwe viscosity na usoro mmiri mmiri.
Nri na ihe ọṅụṅụ: N'ụlọ ọrụ nri na ihe ọṅụṅụ, a na-eji PAC eme ihe dị ka ihe nkwụnye, thickener, na emulsifier na ngwaahịa dị iche iche, gụnyere sauces, uwe, na ngwaahịa mmiri ara ehi.
Ngwaahịa Nlekọta Onwe Onye: Agbakwunyere PAC n'ime ngwaahịa nlekọta onwe onye dị ka shampoos, conditioners, na lotions maka ihe na-eme ka ọ sie ike na nkwụsi ike.
Ọgwụgwọ mmiri: A na-eji PAC eme ihe na usoro ọgwụgwọ mmiri dị ka ihe enyemaka flocculant na coagulant maka iwepụ ihe siri ike kwụsịtụrụ na ihe organic na mmiri.
4. Ihe gbasara gburugburu ebe obibi:
Ọ bụ ezie na PAC na-enye ọtụtụ uru na ngwa ụlọ ọrụ mmepụta ihe, mmepụta ya na ojiji ya nwere ike ịkwalite nchegbu gburugburu ebe obibi.Mgbanwe kemịkalụ nke cellulose iji mepụta PAC na-agụnyekarị iji reagents na usoro ume ike.Na mgbakwunye, mkpofu ngwaahịa nwere PAC nwere ike itinye aka na mmetọ gburugburu ebe obibi ma ọ bụrụ na agbasoghị usoro nlekọta mkpofu kwesịrị ekwesị.Ya mere, a na-agba mbọ iji zụlite ụzọ ga-adigide maka njikọ nke PAC na ịkwalite mwegharị ma ọ bụ mmebi nke ngwaahịa ndị sitere na PAC.
A na-atụ anya na ọchịchọ polyanionic cellulose ga-aga n'ihu na-eto eto n'ofe ụlọ ọrụ dị iche iche n'ihi njirimara ya na ngwa ngwa dị iche iche.Mgbalị nyocha lekwasịrị anya n'ịkwalite arụmọrụ na nkwado nke PAC, inyocha ụzọ njikọ ọhụrụ, na ịmepụta ụzọ enyi na enyi gburugburu ebe obibi.Na mgbakwunye, enwere mmasị na-abawanye na iji PAC na mpaghara na-apụta dị ka biomedicine na ume ọhụrụ.N'ozuzu, polyanionic cellulose ka bụ polymer bara uru na nke dị mkpa na usoro mmepụta ihe ọgbara ọhụrụ, yana ọganihu na-aga n'ihu na-eme ka ọ dịkwuo mma ma na-ebelata akara ukwu gburugburu ebe obibi.
polyanionic cellulose (PAC) bụ ihe na-emepụta kemịkalụ gbanwetụrụ nke cellulose nwere ihe pụrụ iche nke na-eme ka ọ baa uru n'ọtụtụ ngwa ọrụ mmepụta ihe.Site na ịkwalite akụrụngwa mmiri n'ịgba mmanụ ruo n'ịkwalite arụmọrụ nke usoro ọgwụ, PAC na-arụ ọrụ dị mkpa n'ọtụtụ mpaghara.Agbanyeghị, dịka ọ dị na ngwaahịa kemịkalụ ọ bụla, ọ dị mkpa ịtụle mmetụta gburugburu ebe obibi nke mmepụta na ojiji PAC na ịrụ ọrụ maka ngwọta na-adigide.N'agbanyeghị ihe ịma aka, nchọpụta na-aga n'ihu na ihe ọhụrụ na-aga n'ihu na-amụba ike na ngwa nke polyanionic cellulose, na-eme ka ọ dị mkpa na ụlọ ọrụ dị iche iche maka afọ ndị na-abịa.
Oge nzipu: Mar-28-2024