A na-ejikarị polyanionic cellulose (PAC) mee ihe dị ka ihe na-ebelata mmiri mmiri, ihe na-eme ka viscosity dịkwuo elu na onye na-achịkwa rheological na mmiri mmiri.Akwụkwọ a na-akọwa nkenke nkenke isi ihe nrịbama anụ ahụ na kemịkalụ nke PAC, dị ka viscosity, rheology, edo edo edo, ịdị ọcha na viscosity nnu, jikọtara ya na ndenye ngwa n'ime mmiri mmiri.
Ọdịdị molekụla pụrụ iche nke PAC na-eme ka ọ gosipụta arụmọrụ ngwa dị mma na mmiri ọhụrụ, mmiri nnu, mmiri mmiri na mmiri nnu juru.Mgbe ejiri ya dị ka ihe nzacha filtrate na mmiri mmiri, PAC nwere ikike njikwa mmiri na-arụ ọrụ nke ọma, na achicha apịtị akpụpụtara dị gịrịgịrị ma sie ike.Dị ka a viscosifier, ọ nwere ike ngwa ngwa imeziwanye viscosity pụtara ìhè, plastic viscosity na ike shiee ike nke mkpọpu mmiri mmiri, na melite na ịchịkwa rheology nke apịtị.Njirimara ngwa ndị a nwere njikọ chiri anya na ndeksi anụ ahụ na kemịkalụ nke ngwaahịa ha.
1. PAC viscosity na ngwa ya na mkpọpu mmiri mmiri
PAC viscosity bụ njirimara nke ngwọta colloidal nke a kpụrụ mgbe agbazechara n'ime mmiri.Omume rheological nke ngwọta PAC nwere mmetụta dị mkpa na ngwa ya.Viscosity nke PAC metụtara ogo polymerization, ntinye ngwọta na okpomọkụ.N'ikwu okwu n'ozuzu, ọkwa dị elu nke polymerization, nke dị elu nke viscosity;The viscosity mụbara na mmụba nke PAC itinye uche;Ihe ngwọta viscosity na-ebelata na mmụba nke okpomọkụ.A na-ejikarị NDJ-79 ma ọ bụ Brookfield viscometer nwalee viscosity na ndeksi anụ ahụ na kemịkalụ nke ngwaahịa PAC.A na-achịkwa viscosity nke ngwaahịa PAC dịka ngwa chọrọ.Mgbe a na-eji PAC dị ka tackifier ma ọ bụ onye na-achịkwa rheological, a na-achọkarị viscosity PAC dị elu (ụdị ngwaahịa na-abụkarị pac-hv, pac-r, wdg).Mgbe a na-ejikarị PAC eme ihe dị ka onye na-ebelata mmiri mmiri na ọ naghị abawanye viscosity nke mmiri mmiri ma ọ bụ gbanwee rheology nke mmiri mmiri na-egwupụta ihe, a na-achọ ngwaahịa PAC dị ala viscosity (ụdị ngwaahịa na-abụkarị pac-lv na pac-l).
N'ime ngwa bara uru, rheology nke mmiri mmiri na-egwupụta ihe metụtara: (1) ikike nke ịkwọ ụgbọ mmiri na-ebu mkpuru osisi ma hichaa olulu mmiri;(2) Ike nke Livaị;(3) Mmetụta nkwụsi ike na mgbidi osisi;(4) Optimization imewe nke mkpọpu kwa parameters.A na-anwale rheology nke mmiri mmiri mmiri site na viscometer 6-speed rotary: 600 rpm, 300 rpm, 200 rpm, 100 rpm na 6 rpm.A na-eji agụ 3 RPM gbakọọ viscosity pụtara ìhè, viscosity rọba, ike shiee ike na ike shiee static, nke na-egosipụta rheology nke PAC na mmiri mmiri.N'otu oge ahụ, ka viscosity nke PAC dị elu, ka viscosity pụtara ìhè na plastik viscosity dị elu, ma na-abawanye ike shiee ike na ike siri ike.
Tụkwasị na nke ahụ, e nwere ọtụtụ ụdị mmiri mmiri na-agbapụta mmiri (dị ka mmiri mmiri na-egwu mmiri ọhụrụ, mmiri ọgwụ na-agwọ ọrịa ọgwụ, calcium ọgwụgwọ mmiri mmiri mmiri, mmiri mmiri na-egwu mmiri saline, mmiri mmiri mmiri mmiri, wdg), ya mere rheology nke PAC dị iche iche. usoro ịgbapu mmiri dị iche iche.Maka sistemu mmiri ịgbapu mmiri pụrụ iche, enwere ike inwe nnukwu mgbagha n'ịtụle mmetụta dị na mmiri mmiri nke igwu mmiri naanị site na ntinye viscosity nke PAC.Dịka ọmụmaatụ, n'ime usoro mmiri mmiri na-agbapụta mmiri n'oké osimiri, n'ihi nnukwu ọdịnaya nnu, ọ bụ ezie na ngwaahịa ahụ nwere nnukwu viscosity, obere ngbanwe nke ngwaahịa ahụ ga-eduga na nkwụsị nnu dị ala nke ngwaahịa ahụ, na-eme ka viscosity na-adịghị mma na-abawanye mmetụta. nke ngwaahịa n'ime usoro eji eme ihe, na-eme ka viscosity dị ala na-apụta ìhè, obere viscosity plastik dị ala na ike dị ike nke na-eme ka mmiri na-egwupụta ihe na-eme ka ọ bụrụ ihe na-adịghị mma nke mmiri na-egwupụta ihe na-ebu ihe ọkụkụ, nke nwere ike iduga ịrapara n'ahụ siri ike. ikpe.
2.Substitution ogo na uniformity nke PAC na ya ngwa arụmọrụ na-egwupụta mmiri mmiri
Ogo ngbanwe nke ngwaahịa PAC na-adịkarị karịa ma ọ bụ ha nhata 0.9.Agbanyeghị, n'ihi mkpa dị iche iche nke ndị nrụpụta dị iche iche, ogo ngbanwe nke ngwaahịa PAC dị iche.N'afọ ndị na-adịbeghị anya, ụlọ ọrụ na-ahụ maka mmanụ na-aga n'ihu na-emewanyewanye ngwa ngwa ngwa ngwa nke ngwaahịa PAC, na ọchịchọ maka ngwaahịa PAC nwere nnukwu ngbanwe na-abawanye.
Ogo ngbanwe na ịdị n'otu nke PAC nwere njikọ chiri anya na oke viscosity nnu, nguzogide nnu na mfu nke ngwaahịa.N'ozuzu, ka ogo ngbanwe nke PAC na-adị elu, ka otu ngbanwe ahụ na-adịwanye mma, yana mma viscosity nnu, nguzogide nnu na nzacha ngwaahịa ahụ.
Mgbe PAC gbazere na ngwọta nnu inorganic siri ike electrolyte, viscosity nke ngwọta ga-ebelata, na-ebute ihe a na-akpọ mmetụta nnu.ion dị mma nke ionized site na nnu na - coh2coo - Omume nke otu anion H2O na-ebelata (ma ọ bụ ọbụna wepụ) homoelectricity n'akụkụ akụkụ nke molekul PAC.N'ihi ezughị ezu electrostatic repulsion ike, PAC molekụla yinye curls na deforms, na ụfọdụ hydrogen agbụ n'etiti molekụla agbụ agbaji, nke na-ebibi mbụ oghere Ọdịdị ma na-ebelata kpọmkwem viscosity nke mmiri.
A na-atụkarị nguzogide nnu nke PAC site na nha viscosity nnu (SVR).Mgbe uru SVR dị elu, PAC na-egosi nkwụsi ike dị mma.N'ozuzu, ka ogo nke nnọchi dị elu na ka mma nke edo edo edo edo, ka uru SVR dị elu.
Mgbe a na-eji PAC dị ka ihe na-ebelata nzacha, ọ nwere ike itinye n'ime ogologo agbụ multivalent anions n'ime mmiri mmiri.The hydroxyl na ether oxygen otu na molekụla yinye etolite hydrogen agbụ na oxygen n'elu viscosity ahụ ma ọ bụ na-etolite nchikota nkekọ na Al3 + na nkekọ na-agbaji nsọtụ nke ụrọ ahụ, nke mere na PAC nwere ike adsorbed na ụrọ;Mmiri nke ọtụtụ sodium carboxylate dị iche iche na-eme ka ihe nkiri hydration dị n'elu ụrọ ụrọ, na-egbochi nchịkọta nke ụrọ n'ime nnukwu ihe n'ihi nkukota (nchekwa gluu), na ọtụtụ ihe ụrọ dị mma ga-adsorbed na agbụ molekul nke PAC na. N'otu oge ahụ na-etolite a mbuaha netwọk Ọdịdị na-ekpuchi dum usoro, nke mere ka mma nchịkọta kwụsie ike nke viscosity ahụ, chebe ọdịnaya nke ahụ na-egwuputa ihe na mmiri mmiri na-etolite ok apịtị achicha, Belata filtration.Ka ogo ngbanwe nke ngwaahịa PAC dị elu, ọdịnaya sodium carboxylate dị elu, ka mma ngbanwe nke nnọchi ya, yana ihe nkiri hydration na-edozi ahụ, nke na-eme ka mmetụta nchebe gel nke PAC sikwuo ike n'ịgba mmiri mmiri, yabụ na ndị ọzọ. doro anya mmetụta nke mbelata mmiri mmiri.
3. Ịdị ọcha nke PAC na ngwa ya na mmiri mmiri
Ọ bụrụ na usoro mmiri na-egwupụta ihe dị iche, usoro ọgwụgwọ nke onye na-ahụ maka ọgwụgwọ mmiri na-ekpo ọkụ na onye na-ahụ maka ọgwụgwọ dị iche, ya mere usoro ọgwụgwọ PAC na usoro mmiri mmiri dị iche iche nwere ike ịdị iche.Ọ bụrụ na akọwapụtara usoro onunu ogwu nke PAC na mmiri mmiri na-egwu mmiri na mmiri mmiri na-egwu mmiri nwere ezigbo rheology na mbelata filtration, enwere ike nweta ya site n'ịgbanwe ịdị ọcha.
N'okpuru otu ọnọdụ ahụ, ịdị ọcha nke PAC dị elu, ka arụmọrụ ngwaahịa dị mma.Agbanyeghị, ịdị ọcha nke PAC nwere arụmọrụ ngwaahịa dị mma adịchaghị elu.Ekwesịrị ikpebi nguzozi n'etiti arụmọrụ ngwaahịa na ịdị ọcha dịka ọnọdụ dị adị.
4. Ngwa ngwa nke PAC antibacterial na nchedo gburugburu ebe obibi na mmiri mmiri
N'okpuru ọnọdụ ụfọdụ, ụfọdụ microorganisms ga-eme ka PAC rere ure, karịsịa n'okpuru ọrụ cellulase na amylase kasị elu, na-akpata mgbaji nke PAC isi yinye na nhazi nke ibelata shuga, ogo nke polymerization na-ebelata, na viscosity nke ngwọta na-ebelata. .Ikike mgbochi enzyme nke PAC dabere na ngbanwe nke mkpụrụ ndụ ihe nketa na ogo nke nnọchi.PAC nwere ezigbo nnọchi edo edo na ogo dị elu nwere arụmọrụ mgbochi enzyme ka mma.Nke a bụ n'ihi na agbụ dị n'akụkụ nke glucose residues jikọtara nwere ike igbochi ire nke enzyme.
Ogo ngbanwe nke PAC dị elu dị elu, yabụ ngwaahịa ahụ nwere arụmọrụ antibacterial dị mma na ọ gaghị emepụta ísì ọjọọ n'ihi gbaa ụka na iji ya eme ihe n'ezie, yabụ na ọ dịghị mkpa ịgbakwunye ihe nchekwa pụrụ iche, nke na-enyere aka iwu ụlọ.
N'ihi na PAC anaghị egbu egbu na enweghị mmerụ, ọ nweghị mmetọ na gburugburu ebe obibi.Na mgbakwunye, enwere ike imebi ya n'okpuru ọnọdụ microbial akọwapụtara.Ya mere, ọ dị mfe ịgwọ PAC n'ime mmiri na-egwupụta ihe mkpofu, ọ dịghịkwa njọ na gburugburu ebe obibi mgbe ọgwụgwọ gasịrị.Ya mere, PAC bụ ihe mgbakwunye mmiri mmiri na-echebe gburugburu ebe obibi mara mma.
Oge nzipu: Mee-18-2021