Kupera cellulose anaiters kunogona kuve kwakaomarara mamiriro nekuda kwezvakarongeka zvemakemikari zvemakemikari uye zvivakwa. Cellulose anaiters polymers-soluble polymers inotorwa kubva ku cellulose, chisikwa chinoitika polysaccharide inowanikwa mumasango masero emadziro. Ivo vanoshandiswa zvakanyanya mumaindasitiri akasiyana-siyana senge mishonga, chikafu, zviumbwa, uye kuvaka nekuda kwekugadzira mafirimu avo akanaka-ekuumba, kusunga, uye kusunga, uye kusunga midziyo.
1. Kunzwisisa cellulose ana vana:
Cellulose anaiters ana vana ve cellölose, apo maHydroxyl mapoka ezvikamu kana kuti akanyatsotsiviwa nemapoka ether. Mhando dzinozivikanwa kwazvo dzinosanganisira methyl cellelose (mc), hydroxypruster Rudzi rwese rwakasarudzika zvimiro zvakasarudzika zvichienderana neiyo degree uye mhando yekutsiva.
2. Zvinhu zvinokanganisa Solubility:
Zvinhu zvinoverengeka zvinopesvedzera solubility ye cellulose etana:
Degree yekutsiva
Molecular uremu: yepamusoro molecular uremu cellulose ana vana inogona kuda nguva yakawanda kana simba rekuparadzwa.
Solvent Zvivakwa: Sol Solvent nePamusoro Polarity neHydrogen Kugona kugona, senge mvura uye polar organic sols, zvinowanzo shanda nekunyungudika kwemheremalose.
Tembiricha: Kuwedzera tembiricha kunogona kuwedzera solubility nekuwedzera iyo kinetic simba remamorekuru.
Kushungurudzika: Mechanical kushungurudzika kunogona kubatsira kupaza nekuwedzera kusangana pakati peiyo solvent uye polymer.
PH: Kune mamwe ma cellulose eter kunge cmc, ph inogona kukanganisa zvakanyanya kugadzirisa solubility nekuda kwearboxymeymethyl.
3. Sol solvent yekuparadza:
Mvura: Vazhinji cuculose ana ana vana nyore nyore mumvura, vachiita kuti ive yekutanga solies yeakawanda mashandisirwo.
Alcohols: Ethanol, methanol, uye isopropanol anowanzo shandiswa ku-soloms kuti avandudze solubilose ye cellulose evainers, kunyanya kune avo vane mashoma mvura solubility.
Organic Solventes: Dimethyl Sulfoxide (DimethylForMide (DimethyForMide (DimethylfMide (dmf), uye n-methylpyrrodidone (N-methylpyrrodidone (NMP) inowanzoshandiswa kune nyanzvi yekunyorera iyo solubilation yakakwira inodiwa.
4. Dissolution matekiniki:
Kurera kwakareruka: Kune akawanda mashandisiro, anongokurudzira cellulose ana vana mune yakakodzera solvent paAmberient tembiricha yakwana kupazaniswa. Nekudaro, tembiricha yepamusoro uye nguva refu inosimudzira inogona kunge ichidikanwa kuti isimbe kuzere.
Kupisa: kudziya solvent kana iyo solvent-polymer musanganiswa inogona kukurudzira kupaza, kunyanya kune yakakwira mamexular uremu cellulose eterlose eter
Ultrasuication: Ultrasonic kushungurudzika kunogona kuwedzera kupaza nekugadzira mabhuru emabhuruku anosimudzira kurambana kwePolymer Aggregates uye kuvandudza solvent kupinda.
Kushandiswa kweCo-Solvents: Kubatanidza mvura nedoro kana imwe polar organic soles inogona kuvandudza solubility, kunyanya kune cellulose ana dinuru solubility yemvura.
5. Zvinoshanda kufunga:
Size Saizi: Yakapamhama Poda Cellulose ana ana ana vana yakadzika kwazvo pane yakakura zvidimbu nekuda kwekuwedzera nzvimbo.
Kugadzirira kwemhinduro: Kugadzirira Cellulose Ekineti mhinduro, dzakadai sekuparadzira iyo polymer muchikamu cheiyo solvent usati wawedzera zororo, inogona kubatsira kudzivisa kudzivisa uye kuve nechokwadi chekuparadza yunifomu.
PH kugadzirisa: Kune cellulose anainers inokonzeresa kuna Ph, kugadzirisa iyo pH yeiyo solvent inogona kuvandudza salubility uye kugadzikana.
Chengetedzo: Mamwe mashiripiti anoshandiswa kupera cellulose ana vana anganunze nenjodzi uye njodzi dzekuchengetedza. Kuchengeterwa kwakaringana uye michina yekudzivirira yemunhu kunofanirwa kushandiswa kana uchibata aya sol sol.
6. Kunyorera-kwakananga kufunga:
Mishonga: cellulose ana ana ana anoshandiswa zvakanyanya muzvimiro zvemishonga kuti isunungurwe, inosunga, uye kureruka. Iko kusarudzwa kweiyo solvent uye kupaza nzira kunoenderana nezvinodiwa chaizvo.
Chikafu: Mune zvekushandisa zvekudya, cellaulose ana ana anoshandiswa samasikati, maStabilizers, uye vanofuta mafuta. Sol Solvent zvinoenderana nemirairo yechikafu inofanira kushandiswa, uye mamiriro ekunyungudutswa anofanirwa kuve akagadzirirwa kuchengetedza zvigadzirwa.
Kuvaka: Cellulose ana anaiter anoshandiswa mune zvekuvaka zvakadai kunge mongwe, magiraki, uye anonamira. Solvent sarudzo uye kupaza mamiriro ezvinhu kwakakosha kuti uwane iyo yaunoda viscosity uye maitiro ekuita.
7. Runyorwa rwemangwana:
Tsvagurudzo muNovel Solvents uye nyonganiso nzira dzinoenderera mberi kuti ufambire mberi munda wemaserulose ether. Green sol solvents, senge supercritical co2 uye ionic zvinwiwa, ipa dzimwe nzira dzingangodzedzereka nemamiriro ekunze. Pamusoro pezvo, kufambira mberi muPolymer Engineering uye Nanotechnology kunogona kutungamira mukuvandudzwa kwe cellulose ana vana neisina kuvandudzwa solubility uye maitiro ekuita.
Kupararira kwe cellulose ana ana ana matinheri anokurudzirwa nezvinhu zvakasiyana-siyana senge polymer chimiro, solvent zvivakwa, uye nzira dzinotyisa. Kunzwisisa izvi zvinhu uye kusarudza yakakodzera sol soles uye nzira dzakakosha dzekuzadzisa zvakanyatsonaka kupaza uye kurerutsa mashandiro e cellulose ana manyoresers.
Kutumira Nguva: Kubvumbi-10-2020