Cov txheej txheem
1. Kev lag luam keeb kwm thiab tseem ceeb
2. Cov ntsuas ntsuas ntawm PVP zoo kuaj
3. Cov qauv kev ntsuas ntawm cov txuj ci thiab kev soj ntsuam txuj ci
4. Kev kuaj mob thiab thoob ntiaj teb thiab cov kev cai
5. Kuaj cov txheej txheem thiab Kev Tshawb Fawb Kev Ua Haujlwm Tshwj Xeeb
6. Kev lag luam kev lag luam thiab cov kev daws teeb meem
8. Yav Tom Ntej Technology Sib Tw Tawm
1. Kev lag luam keeb kwm thiab tseem ceeb
1. Kev lag luam keeb kwm thiab tseem ceeb
Polyvinyl Polypyrrolidone(Pvp), raws li cov dej-soluble polymer, yog siv dav hauv tshuaj, khoom noj, tshuaj pleev ib ce, kev tiv thaiv hluav taws xob. Piv txwv li:
Kws Tshuaj Kho Mob: Ua tus neeg saib xyuas tshuaj thiab cov ntshav los hloov cov ntshav.
Kev lag luam khoom noj: siv raws li ib qho yooj yim thiab stabilizer.
Cov khoom siv hluav taws xob: Ua lub luag haujlwm tseem ceeb hauv cov photoresists thiab roj teeb separators.
Nrog rau ntau yam kev thov cov xwm txheej, cov kev cai tswj kom zoo ntawm PVP tau ua kom nruj zuj zus. Kev tsis tsim nyog PvP yuav ua rau tsis muaj tshuaj ua haujlwm, cov khoom siv phom sij, yog li kev nyab xeeb kev nyab xeeb, yog li kev kuaj mob thev naus laus zis hauv kev lag luam saw.
2. Cov ntsuas ntsuas ntawm PVP zoo kuaj
Qhov kev xeem yuav tsum them cov ntsiab lus hauv qab no:
● Lub cev lub zog thiab tshuaj lom neeg
Molecular hnyav thiab faib: Kev ntsuas los ntawm gel perfatography (GPC) lossis viscosity ntsuas.
Solubility: Yuav tsum ua kom tiav rau solubility yuav tsum muaj nyob rau hauv cov kuab tshuaj sib txawv (xws li dej, ethanol).
Thermal Stability: Softening point (txog 60 degree) yog sim los ntawm Thermogravimetric tsom (TGA).
● Purity thiab impurities
Halide cov seem: Yuav tsum qis dua qhov txwv tus nqi hauv cov nqe lus ntawm cl (cov qauv kuaj pom yog hais txog gt -9 qauv).
Cov hlau hnyav (xws li arsenic): nitric acid-sulfuric acidmed kev zom mov ua ke nrog cov atomic nqus spectroscopy.
Cov ntsiab lus Oligomer: sib cais thiab hnyav los ntawm cov qauv methanol reflux.
● Cov ntsuas kev ua haujlwm
Adsorption kev ua tau: Ntsuas nws cov adsorption kev ua haujlwm ua yeeb yam tshuaj yeeb.
Zaj duab xis-ua cov cuab yeej: sim zaj duab xis cov kev cai thiab lub zog hauv cov ntaub ntawv txuj ci
3. Cov qauv kev ntsuas ntawm cov txuj ci thiab kev soj ntsuam txuj ci
1.Servroscopy
Infrared spectroscopy (ir): siv los txheeb xyuas cov kev ua cim ntawm PvP (xws li c=o bonds).
UV-Pom Spectroscopy: Tshawb Pom Cov Khoom Ua Kom Muaj Kev Nyab Xeeb thiab Txom Nyem Kev Nqus Abpurbance.
2.Cromatography
Kev ua kom zoo ua kua chromatography (HPLC): Txheeb xyuas cov khoom siv dawb thiab kev ua haujlwm.
Gel permeation chromatography (GPC): Saib xyuas phaus hnyav.
3. Electrochemical thiab kev sim siv lub cev
Viscosity Kev Txiav Txim Siab: Kev sib hloov visiCi kom ntsuas kom ntsuas cov daws teeb meem rheological.
Cov ntaub ntawv xeem ntawm cov dej tshauv: kuaj cov inorganic seem
4. Kev kuaj mob thiab thoob ntiaj teb thiab cov kev cai
1. Suav Cov Qauv
GB \/ T 2022: Kev Ruaj Ntseg Kev Ua Haujlwm rau Cov Khoom Siv Yas.
2023 roj av lag luam kev lag luam tshaj tawm: PvP ntau lawm thiab kuaj cov lus qhia tshwj xeeb.
2. Cov Qauv Txheej Txheem Thoob Ntiaj Teb
USP \/ EP: Purity thiab microbial txwv yuav tsum muaj rau cov kab mob qib PvP.
ISO 9001: Kev tswj hwm kev tswj hwm zoo
5. Kuaj cov txheej txheem thiab Kev Tshawb Fawb Kev Ua Haujlwm Tshwj Xeeb
1. Cov txheej txheem tag nrho cov txheej txheem (xeem CMA \/ CNA cov ntawv pov thawj ua piv txwv)
Qauv Qauv PretReatment:
Sib tsoo, xaus (n-hexane lossis methanol).
Cuab Yeej Ntsuas:
Xaiv HPLC, GPC lossis IR raws li qhov ntsuas.
Cov ntaub ntawv pov thawj:
Xyuas kom tau qhov tseeb los ntawm ntau qhov kev sim sib txuas.
Tshaj tawm tiam:
suav nrog cov qauv kev sim, cov txiaj ntsig thiab kev ua raws cai Xaus.
2. Cov ntsiab lus tseem ceeb
Zam kev paug: kev sim ib puag ncig yuav tsum tau raws li qhov kev nyiam ua kom huv.
Cov twj paj nruag calibration: tsis tu ncua ntsuas qhov hluav taws xob spectrophotometer thiab chromatographic kem.
6. Kev lag luam kev lag luam thiab cov kev daws teeb meem
1. Kev Sib Tw
Tsawg-cov ntsiab lus impurity Nrhiav tau cov khoom siv: cov cuab yeej siv siab (xws li ICP-MS) yuav tsum muaj.
Tsis xwm yeem molecular hnyav faib: Ua kom zoo GPC sib cais.
2. Kev tswjhwm sib txawv
Cov kev sib cav sib ceg hauv cheeb tsam ntawm cheeb tsam: nws raug nquahu tias cov tuam txhab txais yuav cov qauv "nruj me nyuam".
Cov nqi ntsuas siab: txhawb nqa cov khoom siv tshuab kom txo cov nqi ua haujlwm.
1. PVP khaws kev soj ntsuam rau cov tuam txhab ua lag luam
Ib lub tuam txhab ua lag luam uas muaj kev txhaj tshuaj turbid vim yog PvP impurities. Lub tuam txhab siv HPLC los txheeb xyuas oligomer cov seem thiab txhim kho cov txheej txheem lim tshuaj ua ntej dhau kev rov xeem dua.
2. Ua tsis tiav traceavility ntawm cov ntaub ntawv hauv hluav taws xob
Tus roj teeb separator chaw tsim khoom siv GPC los ua kom tiav cov txheej txheem raw tshuaj ntsuam xyuas cov txheej txheem vim tias qhov hnyav loj ntawm PVP.
8. Yav Tom Ntej Technology Sib Tw Tawm
1. Miniaturization thiab Nrhiav tau sai: Portable spectrometers kom muaj nyob rau ntawm cov xaib tiag tiag tsom xam.
2. Kev Txawj Ntse Kev Txawj Ntse: Txhim kho cov kev ua tau zoo ntawm Chromatographic cov ntaub ntawv tsom xam los ntawm kev kawm tshuab kev kawm.
3. Cov tshuaj ntsuab nrhiav tau cov thev naus laus zis: txo cov tshuaj organic thiab txhawb nqa cov txheej txheem dej.
Tag
Nrog rau kev nthuav dav ntawm thaj chaw ntawm PVP, nws cov khoom siv tau zoo dua yuav ua txuas ntxiv txhim kho hauv kev coj ua ntawm qhov siab zoo thiab kev ua haujlwm siab. Kev lag luam yuav tsum khaws nrog cov qauv hloov tshiab, sib txuas ua ke nrog kev sib tw thib peb (xws li CMA \/ CNAS lees paub lub chaw soj ntsuam) kom ntseeg tau cov khoom zoo thiab ua raws.