1 Kenyelletso
Hajoale, thepa e ka sehloohong e sebelisoang ho lokisetso eaCellulose Etherke k'hothone, 'me tlhahiso ea eona ea fokotseha,' me theko e ntse e phahama;
Ho feta moo, hangata e ne e sebelisa li-agents tse tšoanang tse kang clorocetic acid (cloyne oxide e nang le 'mele (Carcinogenic) e kotsi le ho feta' mele oa motho le tikoloho. Buka
Khaolong ena, selefou ea phaene e amanang le bohloeki ba fetang 90% e sebelisitsoeng khaolo ea bobeli e sebelisoa e le thepa e tala le 2-chloroettota e sebelisoa e le lisebelisoa.
Ho sebelisa acid ea clorocetic haholo e le moemeli ea qhekellang, anisicCrisboxeMethyl cellulose (cmc), se ke keng sa utloahala Cllluloseyl Celdulose.
Cellulosese (Hec) Ntho e le 'ngoe
Mekhoa ea ho itokisetsa ea li-celpese e lilemo li tharo e ile ea ntlafatsoa ka liteko le liteko tsa maiketsetso, XD, H-Nmr, joalo-n-nmr, jj.
Lichelete tsa thepa ea cellulose
Molao-motheo oa thekiso ea chelete ea khohole e ka aroloa likarolo tse peli. Karolo ea pele ke ts'ebetso ea ho iphetola, ke hore, nakong ea karabelo ea alkalillase ea cellulose,
Ka ho Fetisisa ka Thato ea Naheo, Pelsulose ea Pineulose e phatsimang ka tlasa ketso ea ho hlohlelletsa, le ka keketseho ea metsi
Palo e ngata ea limolek'hule tse nyane e kene kahare ea selefounu, 'me u arabetse lihlopha tsa hydroyl tse reng yuniti ea glucose ea glucose
Ho hlahisa selefora ea alkali, setsi se sebetsang sa karabelo ea motlakase.
Karolo ea bobeli ke ts'ebetso ea phallo, ke hore, karabelo lipakeng tsa setsi se sebetsang le sodium chlorosactate kapa 2-chloroettathan tlasa maemo a alkaline, e bakang
Ka nako e ts'oanang, motsoako o emisitsoeng sodium chlorosactate le 2-chloroeng e tla hlahisa metsi a itseng tlasa maemo a alkaline.
Boitšoaro bo ka lehlakoreng bo ikemiselitse ho hlahisa sodium glyClate le ethinene glycol, ka ho latellana.
2 Tlhahlobo ea Alkali ea Alkali ea Dinkstatallization ea Cerine Cellulose
Taba ea pele, lokisa tokiso e 'ngoe ea tharollo ea Naah ea nang le metsi a sithabetseng. Ebe, ka mocheso o itseng, 2G ea Pine Fiber
Vitamin e nyahamisitsoe ka boholo ba tharollo ea Naos, e ile ea tsosa nako e itseng, ebe e se e hiriloe hore e sebelisoe.
Moqapi oa Model Model
Precision Ph Meter
Mokelli oa Mokelli Kamehla o futhumatsa makenete ea makenete
Vacuum Deming Oven
Lekala la Elektroniki
Potoloiti ea Metsi a tsamaisana le pompo ea nakoana
Phetisetso e mene e ikemetseng
X-ray diffactometer
Nuclear magnetic resonance spectrometer
Hangzhou Aliling Congment Co, Ltd.
Hangzhou Huikhuang Book In In Lisebelisoa, Ltd.
Shanghai Jinghong Equipment Co, LTD.
Metle ea Toleto Lisebelisoa tsa Mettles (Shanghai) Co, Ltd.
Hangzhou David Sedunthinente Co, Ltd.
American Thermo Fisher Co, Ltd.
Khamphani ea American Thermoelectric Switzerland Arl Khampany
Khampani ea SWISS Bruker
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Ho hlophisoa ha cmcs
Ho sebelisa pine ea mahala ea pineli ea alkali celsilose e hlophisitsoeng ka lisebelisoa tse thata, tse sebelisang etharium chloromacetate e le li-sodition
CMC e nang le DS e phahameng e lokisitsoe ka ho eketsa Alkali habeli le moemeli ea emisang habeli. Kenya 2G ea pine ea alkali cellulose ea Alkali ka moqomong o mong oa mama a mane, ebe o eketsa bophahamo ba molumo oa ethanol, ebe o hlohlelletsa hantle bakeng sa 30min
Hoo, e le hore alkali cellulose ea hloahloa e hasana ka botlalo. Ebe u eketsa palo e itseng ea moemeli oa alkali le sodium chlorocacetate ho etsa nako ea nako ea mocheso o itseng ea etheright
Kamora nako, tlatsetso ea bobeli ea moemeli oa alkaline le sodium clorosactate e lateloang ke menyetla ea nako e telele. Kamora hore karabelo e felile, e pholile ebile e pholile, joale
Ntolella ka palo e lekanang ea asiti ea acetic acid ea acetic acid ea acetic, ebe e hlapa le ho omella le ho omella.
Ho hlophisoa ha li-hecs
U sebelisa Pinelilose Celkali Celli Celsilose le Alkali ea Alkali e hlophisitsoeng joalo ka lihlahisoa tse tala, ethanol joalo ka solvent le 2-chloroetlinol e le ethersion
Hec e nang le MS e Phahameng e lokisitsoe ka ho eketsa Alkali habeli le moemeli ea emisang habeli. Kenya 2G ea pine ea alkali cellulose e nang le masela a mane, 'me u kenye molumo o itseng oa 90%) etanol, hlohlelletsa
Hlohlelletsa nako e telele ho hahamalla ka botlalo, ebe u eketsa palo e itseng ea alkali, 'me u tima mocheso butle, eketsa bophahamo ba 2-
Chloroethanol, e na le matla a ho mocheso o sa khaotseng, ebe o eketsa aloum hydroxide le 2-chloroet ho tsoela pele ka nako e telele. Tšoara
Kamora hore karabelo e phetheloe, e sentse e le asiti e itseng e kholo ea acid ea maano a acetic, 'me qetellong e talime le filthara ea khalase (G3), e hlatsoe ebile e le omileng.
Ho hlophisoa ha Hemcc
U sebelisa hec e lokiselitsoeng ho 3.2.3.4 Ha e le thepa e tala, ethanol e le setsi sa bo-raw
Hecmc. Ts'ebetso e ikhethileng ke ena: Nka palo e itseng ea hec, e e beha leboteng la 100 ho li-cl tse nne tse nne, ebe u eketsa palo e itseng
90% Ethanol, hlohlelletsa ka mokhoa o fokolang bakeng sa nako ea ho e senya ka botlalo, eketsa alkali ka mor'a ho futhumatsa, 'me butle eketsa
Sodium Chlorocetate, phallo ea mocheso o sa khaotseng o fela kamora nako ea nako. Kamora hore karabelo e phetheloe, e e nkisetse ka sesimo sa acetic acemotic ho e khella, ebe u sebelisa filthara ea khalase (G3)
Kamora ho lokisa Fistation, ho hlatsoa le ho omella.
Tlhoekiso ea bo-'mè ba cellulose
Ts'ebetsong ea ho hlophisoa ha Cellulo Moud, hangata lihlahisoa tse ling li hlahisoa, haholo-holo li-sodium tsa letsoai tsa letsoai le tse ling
litšila. Bakeng sa ho ntlafatsa boleng ba Cellulo Sforlose, ho ile ha etsoa tlhoekiso e bonolo ea celleng e fumanoeng. Hobane ba metsi
Ho na le kutloano e fapaneng, ka hona teko e itseng e sebelisa karoloana e itseng ea hytete e nang le leqheka e 'mela e meraro ea cellulose e lokiselitsoeng cellulose.
fetoha.
Beha sampole ea callulose ether ka boleng bo itseng ho beaker bakeng sa 10 ℃. Min. Tsamaea ka matla ho omella
Ka beaker e hloekileng, sebelisa nitrate ea silevera ho lekola li-Ilormide Is. Haeba ho na le pula e tšoeu, e phatsima ka sefako sa khalase ebe u nka se tiile
Pheta mehato e fetileng bakeng sa Karolo ea 'mele, ho fihlela e koaletsoe ka mor'a ho eketsa tharollo e le' ngoe ea tharollo ea Agno3 ha ho na mosoeu, ke hore, tlhoekiso le ho hlatsoa li felile.
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ho sebelisa (haholo-holo ho tlosa karabelo ka sehlahisoa sa sehlahisoa sa sehlahisoa sa sehlahisoa. Kamora ho nyenyefatsa ho koaheloa, ho omella, ho futhumatsa mocheso oa kamore le boima.
Mass, g.
Teko ea liteko le sebopeho sa bo-'mè ba celluulose
Boikemisetso ba degree ea sebaka (DS) le degree ea 1 ea 1
Boikemisetso ba DS: Pele, ba 0,1 m
80ml ea metsi a qhibilihileng, a hlohlelletsa ka bateng ea mocheso o sa khaotseng e 30 ℃ ~ 40 ℃ bakeng sa 10min. Ebe e fetoloa ka tharollo ea sulfuric acid kapa tharollo ea Naoh
PH ea tharollo ho fihlela ph ea tharollo ke 8. Ebe ho beaker e na le acer e nang le PH Meter Electride, sebelisa tharollo e tloaelehileng ea sulfuric acid
Ho tlama maemo a ho tšoha, ho bona ho bala PH Meter ho bala ha a ntse a hlalosa, ha boleng ba tharollo bo fetotsoe ho 3.74,
Tšimo e fela. Hlokomela molumo oa tharollo ea Sulfuric Pergrame e sebelisoang ka nako ena.
Moloko:
Kakaretso ea linomoro tse holimo tsa proton le sehlopha sa hydroxethyl
Karolelano ea palo ea liprotheiti tse holimo; I7 ke boima ba sehlopha sa methylene se bukeng ea hydroxethyl
Botebo ba tlhoeko e phahameng ea Peak; ke botebo ba tlholisano ea proton ea pontso ea lihlopha tse 5 tsa mekine le sehlopha se le seng sa methapo ho yuniti ea glucose gelcose gelcose
Kakaretso.
Mekhoa ea liteko e hlalositsoeng bakeng sa tlhahlobo ea sebopeho sa sebopeho sa li-Ethers Cmc, Hec le Hecmmc
Molao
3.2.4.3 Teko ea XD
Tlhahlobo ea li-X-ray tsa Tlhahlobo ea Tlhahlobo ea Tlhahlobo ea li-ethen cm cmc, Hec le Hecmmc
Mokhoa o hlalositsoeng.
3.2.4.4 Leka ho H-nmr
H Nmr Spectrometer ea Hec e ne e lekantsoe ke ho atoloha ha avance400 h n nmr Spectrometer e hlahisoang ke Bruker.
Ho sebelisa Dimenyl Dimenyl Sumthyl ka thata, tharollo e ile ea ekoa ke Fydrogenccopy ea metsi. Frequency ea liteko e ne e le 75.5mhz.
Ho futhumetse, tharollo ke 0.5ml.
3.3 Liphetho le tlhahlobo
3.3.1 Operimization ea ts'ebetso ea CMC
U sebelisa Cellulose ea Pine e nkiloeng khaolong ea bobeli e le ntho e tala, 'me u sebelisa solororatete e le moemeli ea nang le mohlala, teko e le' ngoe ea ho ipehela teko e le 'ngoe ea netefatso e amohetseng,
Mokhoa oa ho hlophisa oa cmc o ile oa ntlafatsoa, 'me lintho tseo tsa pele tsa teko li ile tsa kenngoa ka har'a tafole 3.3. Tse latelang ke ts'ebetso ea hec
Tsebong, tlhahlobo ea lintlha tse fapaneng.
Tafole ea 3.3 Melao ea Pele ea Phahameng
Boleng ba Sebaka sa Pele
PreTreTment Alkalise / ℃ 40
PreTreTment Alkalise Nako / H 1
Phetisetso ea metsi e tiileng ea metsi / (G / ML) 1:25
PreTreTment Lye Contramentary /% 40
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Mocheso oa pele oa motlakase / ℃ 45
Nako ea pele ea sethala sa pele / h 1
Mocheso oa bobeli oa motlakase / ℃ 70
Nako ea Bobeli ea Mokhahlelo oa Bobeli / H 1
Theko ea motheo ea lisebelisoa tsa Editation / g 2
Palo ea moetsi oa maemo a holimo moleng oa Editar / g 4.3
Phetisetso e tiileng ea metsi / (g / ml) 1:15
3.3.1.1 Tšusumetso ea lintlha tse fapaneng ka CMC SITGUTY STIDPE STITTITITION FEELA
1. Liphello tsa mocheso oa alkalization oa flitrealization ho ea ka tekanyo e kholo ea CMC
In order to consider the effect of pretreatment alkalization temperature on the degree of substitution in the obtained CMC, in the case of fixing other factors as initial values,
Tlas'a maemo, phello ea mocheso oa ho ba obsalization alkalization ka cmc opollong o tšohloa, 'me liphetho li bontšoa ho feiga.
PreTreatment Alkalise / ℃
Liphello tsa PreTreatment Alkalinye le mocheso oa mocheso ho CMC Kill
Ho ka bonoa hore boemo ba ho nka sebaka sa CMC bo eketseha le keketseho ea mocheso oa almalization oa ho qhekella, 'me mocheso oa Alkalization o 30 ° C.
Degrees tse ka holimo tsa ho fokotseha ha sebaka ka mocheso o ntseng o eketseha. Sena ke hobane mocheso oa alkali o tlase haholo, 'me limolek'hule ha li sebetse ebile li sa khone ho
Senya sebaka sa kristale sa cllstalese, se etsang hore ho be thata ho kena kahare ho selefounu sethaleng sa matshole, mme tekanyo ea karabelo e phahameng haholo.
tlase, e fella ka tekanyo e tlase ea ho nkeloa sebaka sa sehlahisoa. Leha ho le joalo, mocheso oa alkalization ha oa lokela ho ba holimo haholo. Ha mocheso oa eketseha, tlas'a ketso ea mocheso o phahameng le alkali e matla,
Cllouloselese e tloaetse ho ruisa bofokoli ba oxidiary, 'me tekanyo ea sebaka sa sehlahisoa se fokotseha hoa fokotseha.
2. Tšusumetso ea nako ea alkallization ea ho pelehi ho CMC SITGEND
Tlas'a boemo ba hore mocheso oa Alkalization oa ho qhekella o la 30 ° C le lintho tse ling ke lintho tse ling tsa bohlokoa
Litlamorao tsa ho nkeloa sebaka. Degree of Shahameng
PretreTment Alkalise Nako / H
Tšusumetso ea Nako ea Alkallization ea Alkallinization hoCmcdegree ea sebaka
Ts'ebetso ea ho bululesa ka boeona e potlakile haholo, empa tharollo ea Alkali e hloka nako e itseng ea ho fapana ka fiber.
Ho ka bonoa hore nako ea Alkalization e le 0.5-1.5H, tekanyo e kholo ea sehlahisoa se nyoloha ka keketseho ea nako ea ho ilka.
Tekanyo ea sebaka seo e fumanoeng e ne e phahame haholo ha nako e le 'ngoe e ne e le 1.5h, mme degree ea e nka nako e fokotsehile kaketseho ea nako kamora 1.5h. Sena se ka khona
E kanna eaba qalong ea alkalization, ka nako ea nako ea nako ea ho bolaea liamaliza, ho kenella ha Alkali ho callulose haholo, ka hona hore fiber
Sebopeho se ka sehloohong se phutholohile haholoanyane, se eketsa moemeli ea qhekellang le mebuso e sebetsang
Nako ea poso: Apr-26-2024