Adsorption yog adhesion ntawm ions los yog molecules rau saum npoo ntawm lwm theem.Adsorption yuav tshwm sim los ntawm physisorption thiab chemisorption.Ions thiab molecules tuaj yeem adsorb rau ntau hom chaw xws li cov chaw polymer.Ib tug polymer yog ib tug loj molecule tsim los ntawm rov qab subunits ua ke los ntawm covalent bonds.Lub adsorption ntawm ions thiab molecules rau polymer nto plays lub luag hauj lwm nyob rau hauv ntau yam kev siv xws li: biomedical, structural, thiab coatings.
Implant Coatings
Protein-resistant coatings:Protein adsorption cuam tshuam cov kev sib cuam tshuam uas tshwm sim ntawm cov ntaub so ntswg-implant interface.Protein adsorption tuaj yeem ua rau cov ntshav txhaws, cov lus teb txawv teb chaws-lub cev thiab qhov kawg ntawm cov cuab yeej degradation.Txhawm rau tiv thaiv cov teebmeem ntawm cov protein adsorption, cov cog cog feem ntau coated nrog cov txheej txheem polymer kom txo cov protein adsorption.
Polyethylene glycol (PEG) txheej tau pom tias txo qis cov protein adsorption hauv lub cev.PEG txheej yog tsim los ntawm hydrophilic molecules uas ua rau cov protein adsorption.Cov protein muaj xws li hydrophobic molecules thiab them qhov chaw uas xav khi rau lwm cov hydrophobic molecules thiab oppositely them qhov chaw.Los ntawm kev siv cov txheej txheej monolayer ntawm PEG, protein adsorption raug tiv thaiv ntawm qhov chaw ntaus ntawv.Tsis tas li ntawd, cov cuab yeej tiv thaiv cov protein adsorption, fibroblast adhesion thiab cov kab mob adhesion tau nce.
Antithrombogenic coatings:Lub hemocompatability ntawm cov cuab yeej kho mob yog nyob ntawm tus nqi saum npoo, lub zog thiab qhov chaw nyob.Cov khoom siv uas tsis ua rau hemocompatabile khiav txoj kev pheej hmoo ntawm kev tsim cov thrombus, kev loj hlob thiab cuam tshuam rau lub cev tiv thaiv kab mob.Polymer txheej yog siv rau cov khoom siv los ua kom lawv cov hemocompatability.Chemical cascades ua rau tsim cov fibrous clots.Los ntawm kev xaiv siv hydrophilic polymer txheej, protein adsorption txo qis thiab txoj hauv kev ntawm kev cuam tshuam tsis zoo nrog cov ntshav txo qis thiab.Ib qho zoo li polymer txheej uas ua rau kom hemocompatability yog heparin.Heparin yog txheej txheej polymer uas cuam tshuam nrog thrombin los tiv thaiv coagulation.Heparin tau pom tias yuav txo qis platelet adhesion, ua kom muaj zog ntxiv thiab cov protein adsorption.
Cov qauv tsim
Advanced polymer composites:Advanced polymer composites yog siv nyob rau hauv lub zog thiab rehabilitation ntawm qub qauv.Cov kev sib xyaw ua ke no tuaj yeem ua tau siv ntau txoj hauv kev xws li prepreg, resin, infusion, filament winding thiab pultrusion.Advanced polymer composites yog siv nyob rau hauv ntau lub dav hlau qauv thiab lawv cov lag luam loj tshaj plaws yog nyob rau hauv aerospace thiab tiv thaiv.
Fiber reinforced polymers:Fiber-reinforced polymers (FRP) feem ntau yog siv los ntawm pej xeem engineers hauv lawv cov qauv.FRPs teb linear-elastically rau axial kev nyuaj siab, ua rau lawv cov khoom zoo los tuav lub nra.FRPs feem ntau yog nyob rau hauv ib tug laminate tsim nrog txhua lamina muaj unidirectional fibers, feem ntau carbon los yog iav, embedded nyob rau hauv ib txheej ntawm lub teeb polymer matrix khoom.FRPs muaj kev tiv thaiv zoo tiv thaiv ib puag ncig thiab kev ua haujlwm zoo.
Polytetrafluoroethylene:Polytetrafluoroethylene (PTFE) yog cov khoom siv polymer siv rau hauv ntau daim ntawv thov suav nrog cov txheej tsis lo, cov khoom zoo nkauj, thiab cov roj nplua nyeem.PTFE yog hydrophobic molecule tsim los ntawm carbon thiab fluorine.Cov pa roj carbon-fluorine bonds ua rau PTFE ua cov khoom siv tsis tshua muaj kev sib txhuam, ua rau muaj kev kub ntxhov thiab tiv taus kev ntxhov siab tawg.Cov khoom no ua rau PTFE tsis-reactive thiab siv nyob rau hauv ib tug dav array ntawm daim ntaub ntawv.
Polymer adsorption nyob rau hauv porous media:Lub cev adsorption thiab mechanical entrapment yog ob qho laj thawj tseem ceeb ntawm polymer tuav hauv cov xov xwm ntxeem tau.Tsis tshua muaj polymer tuav nyob rau hauv lub reservoir yog qhov tseem ceeb rau kev ua tiav ntawm kev ua haujlwm ntawm polymer EOR.
Post lub sij hawm: Dec-18-2018