Lintho tse ntle tse ntle ho tsoa ho Cellulose Ether

Ts'ebetso le ts'ebetso ea sehlahisoa CllouxeMethyl Ceplolose Croulose Cross - Lehloeo la ANKI, Ethesions ea li-alkali, hape e ne e tšohloa. Phello ea litlamorao ts'ebetsong ea ho monya metsi. Mechanism ea Adsoorption ea polokelo ea metsi e monyang metsi e hlalositsoe. Boithuto bo bontšitse hore boleng ba ho boloka metsi (WWV) ba sehlahisoa sena bo fihla 114ml / g.

Mantsoe a Bohlokoa:Cellulose Ether; Methylenebiide; Ho Itokisetsa

1,Kenyelletso

SuperaBent Resin ke thepa ea polymer e nang le lihlopha tse matla tsa hydrophphilic le tekanyo e itseng ea ho tšela maoto. Lisebelisoa tse tloaelehileng tsa metsi tse kang pampiri, k'hothone le hemp li monya metsi a mangata, mme gel e hlahisoang ka thata ea metsi e ka 'na ea monya metsi a mangata ka khatello e nyane. Boemo bo botle ba metsi. Ha e qhibiliha ka metsing kapa ka li-solvents tsa khale.

Ho na le palo e kholo ea lihlopha tsa hydroyl, lihlopha tsa carboyl le li-sodium tsa sodium ka pel'a lintho tse bonahalang e le tse ling tsa cellulose. Kamora ho monya metsi, metsi a pota-potiloe ke Network Marang-rang a hydrophlic mme a ka bolokoa tlasa khatello ea kantle. Ha metsi a eketsa setsi sa maele, 'mele oa memmbrane e lumeloang e thehoa pakeng tsa bolulo le metsi. Ka lebaka la khatello e phahameng ea ions ea mobile (na +) ka har'a polokelo ea metsi a mangata, ho ea ka Donnan'Molao-motheo oa S equilibrium, phapang ena ea boikakanyo ena e ka baka khatello ea lefutso. E mafutsana, a etsa lerata le ho ruruha matla a fokolang, metsi a nang le 'mala o mongobo le oa ho kopanya le ho monya metsi a mangata le ho ruruha. Ts'ebetso ena ea Anseldoption e ntse e tsoela pele ho fihlela phapano ea khatello ea maikutlo e bakiloeng ke phapang ea libaka tse kopaneng tsa khokahano ea polymer Renin. Melemo ea libaka tse lumelloang ka kutu ea metsi, lebelo la metsi a lekaneng, ho hana metsi a letsoai, ho ka fetoloa boleng, le litšenyehelo tse tlase, kahoo li na le tse pharalletseng mefuta e fapaneng ea ts'ebeliso. E ka sebelisoa e le moemeli oa metsi a thibelang moetsi oa metsi, moqhaka oa mobu le metsi a bolokang indasteri le temo. Ntle le moo, e na le tebello e ntle le tebello ea ho etsa sebe, lijo, likokoana-hloko tsa likokoana-hloko, le meriana.

2. Karolo ea liteko

2.1 Molao-motheo oa liteko

Ho hlophisoa ha k'hothone sa k'hothone ho feta ho theha sebopeho se hokahaneng se hokahaneng le sebaka se tlase sa letlalong la fiber. Ho hokahana le metsoako e nang le lihlopha tse peli kapa ho feta tse sebetsang. Lihlopha tse sebetsang li ka khona ho ts'oara li-cronyl, hydroxyl, Antide, joalo-rang, joalo ka likabelo tse fapaneng tsa metsi tse hokahanyang. Tekolong ena, ho sebelisoa ke moemeli ea hokahanyang sefapano, ho kenyeletsa mehato e latelang:

(1) Clloulose (RCELL) o arabela ka Tharollo ea Alkaline ho hlahisa Cepralose ea Alkali Ho theola mocheso ha ho thusa ho theha likhoele tsa alkali mme ho ka thibela hydrolysis ea bona. Ho eketsa Allicals ho ka eketsa bothata ba cellulose ea cellulose, e leng molemo holkalization le matlo a latelang.

Rcelloh + Naoh→Rcellona + H2O

.

Rcellona + Clich2Coona→Rcelloch2coo + nacl

. Hobane ho sa na le palo e kholo ea li-hydroyl ka kemiso ea limolek'hule ea carboxymearthy. Ea Alkali Catalysis, ebe u e hokahanya pakeng tsa Michael Morekisi oa Li-camoular tsa Moloko, 'me hang-hang ea phapanyetsano ea conteple ea metsi.

2.2 Lisebelisoa le lisebelisoa tse tala

Lisebelisoa tse tala: Cotton (khaola ka lineters), sodium hydroxide, Mothylenebister acid, ehlile, Acestol, Acestol, Acestol, Acestol, Acestol, Acestol.

Liletsa: Bophahamo ba motlakase, motlakase, motlakase, Funlux e omileng

2.3 Mokhoa oa ho hlophisa

2.3.1 alkalinization

Eketsa 1 g ea k'hothone e akaretsang ho botlolo e nang le tjantjello le ho hlohlona ka sekhahla ka tlase mochesong oa kamore, 'me o hlohlelletsa nakoana.

2.3.2 Etheright

Kenya palo e itseng ea acid ea clorocetic le ho hlohlelletsa bakeng sa 1h.

2.3.2 CrossLiking

Nakong e tlang ea etherization, n, n-methylenebiide e ekelitsoe ho tšela sefapano, mme se hlohlellelitsoe ka mocheso oa kamore bakeng sa lihora tse peli.

2.3.4 Ho sebetsa ka poso

Sebelisa acid ea acetic acetic ho fetola boleng ba ph ho 7, hlatsoa letsoai le nang le actone, filthara e omella, 'me vacuum e omella lihora tse 4 (ka 60°C, vacuum degree 8.8kpa) ho fumana sehlahisoa se tšoeu sa Cotton Filament.

2.4 Tlhahlobo ea tlhahlobo

Sekhahla sa ho kena ka metsing (WWV) se khetholloa ka ho sesa, ke hore, 1G ea sehlahisoa (v1), e falweng ka lihora tse 24 , mme metsi a ka tlase ho skrini a bokelloa (v2). Foromo ea palo e ka bang latelang: wriwn = (v1-v2) / g.

3. Liphetho le puisano

3.1 Khetho ea maemo a leholimo a alkalization

Ts'ebetsong ea ho hlahisa alkali cellulose ea Alkali ka ketso ea k'hothone le tharollo ea alkaline, maemo a ts'ebetso a na le phello e kholo ho ts'ebetso ea sehlahisoa. Ho na le mabaka a mangata karabelo ea Bolution. Bakeng sa mokhoa o bonolo oa ho shebella, mokhoa oa mofuta oa orthogonal o amoheloa.

Maemo a mang: Solvent ke 20ml ea Ethanol

Tlhabollo ea liteko tsa tlhahlobo le kamano ea mantlha le ea bobeli: C> A> B B, karolelano e ntle ka ho fetisisa: A3b3c3. Khatello ea Lye ke ntho ea bohlokoa ka ho fetisisa ea bohlokoa ka ho fetisisa ea maiketsetso. Tšobotello e phahameng ea LYee e thusa ho theha cellulose ea Alkali. Leha ho le joalo, re lokela ho hlokomela hore leseli le phahameng la lye, e kholo e kholo ea li-superaborblebledbent Resin. Ka hona, ha o hlatsoa letsoai le letsoai le 'maloa, ho netefatsa hore letsoai ha sea tlosoa, e le hore le se ke la monya bokhoni ba sehlahisoa.

3.2 Phello ea litekanyetso tsa moemeli oa Clackling Cons

Maemo a liteko ke: 20ml ea Ethanol, 2.3: karolelano ea Alkali ho moemeli ea nang le chelete, 20ml oa Alkalization.

Liphetho li bontšitse hore palo ea moemeli ea hokahanyang ka css e amme maikutlo a ho hokahanya cmc-na. Ho hokela ho feteletseng ho tlisa sebopeho se thata sa marang-rang sebakeng sa sehlahisoa, se khetholloang ke sekhahla sa monyaluoa le ho hlaka ha ho hlaphoheloa metsi; Ha boholo ba moemeli oa likuking o hokahanyang, lifapano ha bo felle feela, 'me ho na le lihlahisoa tse qhibilihang metsi, tse amang sekhahla sa lapeng. Ha palo ea moemeli oa likuking e hokahanyang 0.06g, tekanyo ea ho kena ea metsi e eketseha ka keketseho ea palo ea moemeli oa litente. ka palo ea moemeli ea hokahanyang. Ka hona, litekanyetso tsa moemeli oa CrossLiking li ka ba 6% ea boima ba fiberton ea k'hothone.

3.3 Phello ea maemo a malebela ho Writv

Maemo a liteko ke: Maqhubu a Alkali Control 40%; Alkali Mmila oa 20ml; Ehlile ethanol 20ml; litekanyetso tsa moemeli ea hokahanyang 0,066; alkalization 90min.

Ho tsoa maemong a karabelo a lik'hemik'hale, alkhali-ether Ratio (Naoh: Koloi , hobane: Ho ne ho e-na le boemo bo phahameng ba mahala ea mahala bo ka se fe phethoa ha karabelo ea alkalization; karabelo e hokahanyang e hokahanyang e lokela ho etsoa tlasa maemo a alkaline; maemo a mang a mahlakoreng a fokotsa alkali. Leha ho le joalo, haeba palo ea Alkali e eketsoa haholo, fiberri ea Alkali e tla nchafatsoa ka botebo, 'me ka nako e le' ngoe, katleho ea moemeli oa balehe o tla fokotsoa. Liteko li bontša hore karolelano ea alkali ho ea ether e ka ba ka 2,5: 1.

3.4 Tšusumetso ea chelete ea ho sotla

Maemo a liteko ke: Maqhubu a Alkali Control 40%; Alkali Dosage 20ml; alkali-ether karotioti 2.5: 1; Tekanyetso ea moemeli ea hokahanyang 0,06g, alkalization 90min.

Solventy onyl o rata karolo ea ho busa, o ka fokotsa mocheso oa alkali, ka tsela eo o ka fumana junifomo Cellulose. Leha ho le joalo, haeba ho na le joala bo eketsang haholo, alkali le sodium banocloroAcepete e tla fokotseha, mme hape e tla ba le phello e mpe ho phalleha ho latelang. Ha palo ea ethanol e le 16 e le 20ml, boleng ba wev bo kholo.

Ka kakaretso, maemo a loketseng a ho lokisa superabsont Remin ho tsoa ho SmboxymeBethyl Cellulobiser le Etrethal, e-na le tente ea alkali ho ether ke 2.5: 1, 'me litekanyetso tsa moetsi oa liqhomane li na le 0.06g (6% ea palo ea li-cotton linces).