Polyethylene Glycol Kho Cov Txheej Txheem Ua Cas 25322-3

Polyethylene Glycolol daws teeb meem, uas muaj, ω- lub npe dav dav ntawm Glycol Polymer nrog ob lub ntsej muag hydroxyl, thiab cov mis tshuaj yog ho (ch2ch2o) NH, CAS CASE 25322-68-3. Cov khoom sib txawv sib txawv raws li qhov hnyav molecular, los ntawm cov xim tsis muaj kob thiab tsw muaj kuab ua kua rau waxy tawv. Cov uas muaj lub cev hnyav molecular ntawm 200 ~ 600 yog cov kua ntawm chav tsev, thiab cov uas muaj zog ntau dua 600 yuav maj mam dhau los ua cov khoom sib txawv. Cov khoom yuav sib txawv nrog qhov hnyav molecular. Los ntawm cov xim tsis muaj kob thiab tsw ntxhiab viscous kua rau waxy tawv. Nrog kev nce ntawm molecular hnyav, nws lub peev xwm hygroscopic txo qis ncaj. Cov khoom no yog soluble hauv dej, ethanol thiab ntau lwm cov kuab tshuaj organic. Cov pa tsis tau qis, ruaj khov rau tshav kub, kua qaub thiab alkali. Tsis ua haujlwm nrog ntau yam tshuaj lom neeg. Nws muaj cov hygroscopicity zoo, lubricity thiab cohesiveness. Nws tsis yog kev tawm tsam, saj cov dej siab me me, muaj cov dej solubility zoo, thiab muaj qhov zoo sib xyaw nrog ntau yam organic. Nws muaj lubricity zoo heev, noo noo ceev cia, dispersion thiab adhesion, thiab tuaj yeem siv ua tus sawv cev antistatic thiab mos muag. Nws yog dav siv nyob rau hauv cov tshuaj pleev ib ce, tshuaj, yas, ntaub ntawv, electrassplating, tshuaj tua kab, khoom lag luam.

Polyethylene GlycolCov kev daws teeb meemCov roj fatty acid yog dav siv hauv kev lag luam tshuaj pleev ib ce thiab kev lag luam kws tshuaj.

1. Vim tias nws muaj ntau yam zoo tshaj plaws, nws yog qhov tsim nyog rau siv ua cov tshuaj pleev ntub dej thiab cov tshuaj txhuam hniav, txhuam hniav, tshuaj txhuam hniav rau cov plaub hau, muab cov plaub hau silky liter.

Polyethylene glycol (Mr>2000) Nrog cov siab txheeb ze molecular hnyav yog tsim nyog rau mem pleev di ncauj, Daving xab npum, Foundation tsim thiab kev zoo nkauj tshuaj pleev ib ce. Nws tseem raug siv los ua cov neeg sawv cev thiab tuab dua hauv kev tu tus neeg sawv cev. Hauv kev lag luam kws tshuaj, nws yog siv los ua cov kua pleev roj av, emulsion, tshuaj pleev, tshuaj pleev thiab cov hnub nyoog.

2. Cov kua tshuaj aqueous ntawm nws tuaj yeem siv los ua kev pab tsis pub siv lossis kho cov viscosity ntawm lwm cov xov xwm; Polyethylene glycol thiab lwm yam emulsifiers tau siv ua ke kom nce cov ruaj khov ntawm emulsion.

3. Nws tseem siv los ua yeeb yaj kiab txheej, ntsiav tshuaj roj nplua nyeem, cov roj nplua nyeem, tshuaj tso tawm, thiab lwm yam.

4. PeG 4000 thiab Peg 6000 feem ntau siv los txhawb cell fusion lossis protoplect fusion thiab pab tsiaj (xws li poov xab) kom noj cov DNA thaum hloov pauv. Peg tuaj yeem nqus dej hauv cov tshuaj, yog li nws tseem siv los ua kom haum.

5. Hauv kev sim ntawm kev kawm cov protein molecules, cov neeg coob coob hauv Vivo tuaj yeem simulated los xyuas cov cawv ntawm cov qauv protein.

6. Melting Promoter: ib qho tshuaj lom neeg zoo melting txhawb nqa siv hauv kev lag luam muaj txiaj ntsig. Muaj ntau cov koob ntawm cov polymers nrog cov kev sib txheeb sib txawv molecular hnyav. Cov neeg uas muaj feem pua hnyav molecular hnyav ntawm 200 thiab 6000 tuaj yeem siv los ua cov neeg txhawb nqa melters, tab sis cov uas muaj feem cuam tshuam molecular hnyav ntawm 1000 yog qhov zoo dua (lawv yog kua nyob rau lub sijhawm no). Pas tau muaj zog dej solubility. Hauv qhov nruab nrab ua kua, lub Ethere txoj kev sib tsoo ntawm nws cov npoo av muaj qhov tsis zoo them nqi. Nrog rau kev koom tes ntawm Ca 2+} ion, pg tuaj yeem txuas cov protein zoo los yog hais tias cov choj txuas ntxiv thiab fuse. Nyob rau hauv 50% peg, ploj ntawm cov dej dawb tuaj yeem ua rau lub cev qhuav dej ntawm cov ntshav membraf thiab cov qauv xov tooj ntawm tes.

7. Polyethylene glycol yog siv ua ib qho kev ntsuas tshuaj thiab tseem ua cov mos muag thiab roj nplua nyeem rau cov neeg ua haujlwm ua haujlwm.

8. Nws yog siv ua matrix hauv tshuaj thiab cov tshuaj pleev ib ce, raws li dispersant, roj nplua thiab emulsistics hauv roj hmab, hlau ua, tshuaj tua kab thiab lwm yam lag luam.

9. Organic hluavtaws nruab nrab, cov neeg ua kom dej noo rau cov tshuaj pleev ib ntus kev lag luam txhua hnub, inorgiic regulator, thiab lwm yam.

10. Nws tuaj yeem siv raws li flocculant, kev tiv thaiv kua dej, textile sizing tus neeg sawv cev, cia siab thiab ua paug, tuab thiab hniav txhim kho.

11. Siv cov tshuaj pleev ib ce, tshuaj, tshuaj lom neeg, roj hmab, ntawv ua, pleev xim, electroplating

12. Siv los ua PVC cov roj nplua nyeem, masterbatch ntxiv, textile softener, xim dispersant, thiab lwm yam

Raws li ib qho kev ntxiv rau cov ntawv ua, nws tuaj yeem txhim kho tus nqi sib npaug ntawm cov muab tub lim thiab zoo fiber ntau. Thaum tus txheeb ze lub cev hnyav yog ntau dua 3 lab, nws muaj qhov zoo dispersibility, qee yam tsis muaj zog, luag txo thiab pyrolysis. Nws yog qhov zoo defflocculating tus neeg sawv cev. Nws tuaj yeem nce cov viscosity ntawm pulp, tiv thaiv cov kev sib nrig sib, txhim kho lub qab ntxiag, txo lub zog noj ntawm kev ntaus, thiab txhim kho lub zog ntawm lub cev.

13. Polyethylene Glycol Kho Txhim Kho Cov Lus Qhia tuaj yeem siv los ua cov ntaub ntawv raw ntawm ester surfactants.

Synthesis ntawmPolyethylene Glycol: Cov tshuaj tiv thaiv polymerization tuaj yeem nqa tawm hauv cov roj theem lossis kua theem. Hauv kev lag luam, kua theem polymerization feem ntau siv, nrog sodium hydroxide lossis poov tshuaj hydrocrot ua catalyst. Cov tshuaj tiv thaiv yog nqa tawm hauv cov khoom siv hluav taws xob hlau tau nruab nrog cov twj tso kua mis staculating thiab cov cua sov sab nraud nrog cov tshuab hluav taws xob nrog cov neeg kho tshuab ntxhov siab.

Nyob rau hauv ib txwm muaj mob, Peg yog ruaj khov, tab sis nws tuaj yeem cuam tshuam nrog oxygen hauv huab cua ntawm 120℃lossis siab dua. Hauv cov cua hauv inert (xws li nitrogen thiab carbon dioxide), nws yuav tsis hloov txawm tias nws yog rhuab yuav tshwm sim thaum kub nce mus rau 300 degree. Qhov sib ntxiv ntawm antioxidant, xws li phenothiazine nrog huab hwm coj ntawm 0.25% ~ 0.5%, tuaj yeem txhim kho nws cov tshuaj ruaj khov. Ib qho ntawm nws cov khoom decomposition yog qhov tsis muaj zog thiab yuav tsis tsim tawv plhaub lossis tawv tawv.

Nws yog cov polymer ntawm ethylene oxide hydrolypes khoom, tsis muaj tshuaj lom, tsis muaj kev cuam tshuam, thiab siv dav hauv ntau yam kev npaj tshuaj. Polyethylene glycol nrog cov molecular hnyav yog qhov sib luag. Nyob rau hauv dav dav, qhov lom ntawm glycols yog tsawg. Daim ntawv thov hauv zos ntawm polyethylene glycol, tshwj xeeb tshaj yog mausosal tswj, tuaj yeem ua rau kev npau taws. Nyob rau hauv cov tshuaj pleev sab nraud, cov khoom lag luam no tuaj yeem ua rau cov tawv nqaij yooj thiab muaj cov nyhuv yahuab zoo ib yam li glycerin. Zawv plab yuav tshwm sim hauv cov koob tshuaj loj. Hauv kev txhaj tshuaj, qhov siab tshaj plaws ntawm polyethylene glycol cov kev daws 300 yog li 30% (v / v), thiab kev hemolysis tuaj yeem tshwm sim thaum cov siab tshaj 40% (v / v).

Ib qho ntxiv ntxiv cov polymer ntawm polyethylene oxide thiab dej. Thaum lub molecular hnyav yog qis dua 700, nws yog tsis muaj xim, tsis muaj ntxhiab, tsis muaj kuab thiab kua, nrog kev nqus dej me me. Cov uas muaj molecular hnyav ntawm 700 thiab 900 yog ib yam ib nrab. Cov uas muaj molecular hnyav ntawm 1000 thiab saum toj yog lub teeb dawb waxy khoom lossis flocculent paraffin lossis ntws hmoov. Nchuav hauv dej, soluble hauv ntau cov kuab tshuaj organic, xws li dej cawv, Ketone, Chloroform, glyceride thiab muaj ntxhiab hydrocarbons; Insoluble nyob rau hauv feem ntau cov aliphatic hydrocarbons thiab ether.

Nrog kev nce ntawm molecular hnyav, nws cov dej solubility, vapor siab, txheeb ze ntom, nyem taw tes thiab viscosity ntau ntxiv. Nws yog qhov ruaj khov, tsis ua haujlwm nrog ntau yam tshuaj lom neeg, thiab tsis yog hydrolyze.

Peg yog cov dej tsis-ionic-soluble polymer. Nws tuaj yeem sib haum nrog ntau cov tshuaj nrog cov tshuaj polarity siab, tab sis nws tsis tau sib xws nrog cov tshuaj nrog cov polarity tsawg. Polyethylene Glycol suav nrog cov txheeb ze tsawg dua molecular hnyav muaj qhov sib haum zoo. Nws tuaj yeem sib xyaw nrog oxidized starch, nitrocellulose, polyvinyl acetate thiab pob kws gluten lossis ib nrab. Nws yog insoluble nrog beeswax, cov roj Castor, gelatin, Arabic pos hniav, roj ntxhia, txiv roj roj thiab paraffin.

! Synthesis

Cov kws tshawb nrhiav tau tshawb txog enzymatic polymerization siv cov kua qaub los yog oxidoredases los tsim cov pa taws me me. Ib qho 2023 kev kawm tau tiav 85% los ntawm Peg 600 siv Candida Antarctica Lipase B (CalB), txo kev siv hluav taws xob los ntawm 60% piv rau cov qauv ib txwm muaj.

► Kev xa tshuaj

Crispr-peg Nanocompluplexes: Pegylated Lipid Nanoparticles xa cov hom phiaj nrog 90% efficiency, outperforming vectors hauv kev nyab xeeb kev nyab xeeb.

4D luam tawm: Peg-acrylate hydrogels nrog cov sij hawm-nyob rau cov txheej txheem hloov kev hloov pauv rau cov ntaub so ntswg engineering.

El Kev Siv Kom Yooj Yim

Biodegradable Polyesters zoo li poly (Lactic-co-glycolic acid) (plga) tau tawm raws li peg hloov chaw nyob rau hauv cov khoom kho mob, txawm tias cov nyom nyob hauv. Hybrid Polymers sib xyaw nrog Chitosan lossis Cellulose derivatives muaj kev txhim kho cov biodegradity tsis muaj kev ua tiav.

► Nanotechnology kev koom ua ke

Peg-coated kub nanoparticles (Aunps) pab ua cov neeg sawv cev sib txawv rau kev yees duab duab, ua tiav 10 × siab dua daws teeb meem MRI. Ib yam li ntawd, PEG-ua haujlwm Quatum dotsum (QDS) Pab kom lub sijhawm ntawm kev taug qab cov tshuaj pub rau Vivo.

Polyethylene cov kev daws teeb meem yog lub pob zeb ntawm kev tshawb fawb thiab kev lag luam studonging niaj hnub los ntawm kev ua kom yuag thiab qhov tshwj xeeb biocompatibility. Los ntawm kev ncua lub txee lub neej kom lubricating machinery, peg cov ntawv thov txuas ntxiv mus nthuav dav hauv Green Chemistry thiab Nanotechnology. Txawm li cas los xij, kev txhawj xeeb txog kev xav thiab ib puag ncig kev xav tau kev nyab xeeb rau kev nyab xeeb dua, ntxiv rau lwm txoj kev nyab xeeb. Raws li lub ntiaj teb ua ntej nce kev lag luam thiab precision tshuaj, Peg kev txhim kho yuav nyob ntawm qhov kev vam meej ntawm kev ua tiav ntawm kev ua tiav ntawm kev siv tau ntawm kev sib tw ntawm kev kuaj pom thiab lub ntiaj teb tiag tiag.

Cim npe nrov: Polyethylene Gascol Cov Txheej Txheem Ua Ntej Cas 25322-3, Chaw Tsim Tshuaj, Chaw Tsim Tshuaj, Hoobkas, Muag Khoom, Yuav Khoom, Rau Cov Muag Khoom