I-Adsorption kukunamathela kwee-ion okanye iamolekyu kumphezulu wesinye isigaba.I-Adsorption inokwenzeka nge-physisorption kunye ne-chemisorption.Iiyoni kunye neemolekyuli zinokubhengeza kwiintlobo ezininzi zemigangatho ebandakanya umphezulu wepolymer.Ipolymer yimolekyuli enkulu eyenziwe ngamacandelo aphindaphindiweyo adityaniswe kunye ngamabhondi adibeneyo.I-adsorption yee-ion kunye neemolekyuli kumphezulu wepolymer idlala indima kwizicelo ezininzi ezibandakanya: i-biomedical, i-structural, kunye ne-coatings.
Implant Coatings
Iingubo ezixhathisa iprotheyini:Iprotein adsorption ichaphazela intsebenziswano eyenzekayo kwi-tissue-implant interface.I-protein adsorption inokukhokelela kwi-blood clots, ukuphendula komzimba wangaphandle kwaye ekugqibeleni ukuthotywa kwesixhobo.Ukwenzela ukuchasana neziphumo zeprotein adsorption, ukufakelwa kuhlala kugqunywa ngepolymer coating ukunciphisa iprotein adsorption.
Iingubo ze-Polyethylene glycol (PEG) zibonakaliswe ukunciphisa i-protein adsorption emzimbeni.I-PEG yokwambathisa iqulethe iamolekyuli ze-hydrophilic ezizondayo kwi-protein adsorption.Iiprotheyini zibandakanya iimolekyuli ze-hydrophobic kunye neziza zokutshaja ezifuna ukubophelela kwezinye iimolekyuli ze-hydrophobic kunye neziza ezichasayo ezichaseneyo.Ngokusebenzisa i-PEG ye-monolayer encinci, i-protein adsorption ithintelwe kwindawo yesixhobo.Ngaphezu koko, ukuchasana kwesixhobo kwi-protein adsorption, i-fibroblast adhesion kunye ne-bacteria adhesion iyanda.
Iingubo ze-Antithrombogenic:Ukuba ne-hemocompatability yesixhobo sonyango kuxhomekeke kwintlawulo yomphezulu, amandla kunye nethografi.Izixhobo ezisilelayo ukuba yi-hemocompatabile zibaleka umngcipheko wokwenza i-thrombus, ukwanda kunye nokubeka esichengeni amajoni omzimba.Iingubo zepolymer zisetyenziswe kwizixhobo zokwandisa i-hemocompatability yazo.I-Cascades ye-Chemical ikhokelela ekubunjweni kwamahlwili e-fibrous.Ngokukhetha ukusebenzisa i-hydrophilic polymer coatings, iprotein adsorption iyancipha kwaye ithuba lokunxibelelana okungalunganga negazi liyancipha ngokunjalo.Enye i-polymer eyongeza i-hemocompatability yi-heparin.I-Heparin yingubo yepolymer edibanisa ne-thrombin ukukhusela ukudibanisa.I-Heparin ibonakaliswe ukucinezela ukunamathela kweplatelet, ukuncedisa ukusebenza kunye ne-protein adsorption.
Ulwakhiwo
Imidibaniso yepolymer ephezulu:Iimbumba zepolymer eziphuculweyo zisetyenziselwa ukuqinisa kunye nokuvuselelwa kwezakhiwo zakudala.Ezi composite ziphucukileyo zinokwenziwa kusetyenziswa iindlela ezininzi ezahlukeneyo ezibandakanya prepreg, resin, infusion, filament winding kunye pultrusion.Iikhompositi zepolymer eziphucukileyo zisetyenziswa kwizakhiwo ezininzi zenqwelomoya kwaye intengiso yazo enkulu ikwindawo yomoya kunye nokhuselo.
Iipolima ezomelezwe ngeFayibha:Iipolymers zeFiber-reinforced (FRP) ziqhele ukusetyenziswa ziinjineli zasekuhlaleni kwizakhiwo zazo.Ii-FRPs ziphendula ngomgca-elastically kuxinzelelo lwe-axial, okwenza kube yinto enkulu yokubamba umthwalo.I-FRPs idla ngokubunjwa kwe-laminate kunye ne-lamina nganye enemicu ye-unidirectional, ngokuqhelekileyo ikhabhoni okanye iglasi, ifakwe ngaphakathi kwinqanaba le-polymer matrix ekhanyayo.Ii-FRPs zinokuchasana okukhulu ngokuchasene nokuvezwa kwendalo kunye nokuqina okukhulu.
Polytetrafluoroethylene:Polytetrafluoroethylene (PTFE) yipolymer esetyenziswa kwizicelo ezininzi ezibandakanya i-non-stick coatings, iimveliso zobuhle, kunye nezinto zokuthambisa.I-PTFE yimolekyuli ye-hydrophobic eyenziwe ngekhabhoni kunye nefluorine.Iibhondi ze-Carbon-fluorine zibangela ukuba i-PTFE ibe yinto ephantsi-i-friction, ehambelana neendawo eziphakamileyo zokushisa kunye nokumelana noxinzelelo loxinzelelo.Ezi mpawu zibangela ukuba i-PTFE ingasebenzi kwaye isetyenziswe kuluhlu olubanzi lwezicelo.
I-polymer adsorption kwimidiya enemingxuma:I-adsorption ebonakalayo kunye nokufakwa koomatshini zimbini izizathu eziphambili zokugcinwa kwepolymer kumajelo amdaka.Ukugcinwa kwepolymer ephantsi kwindawo yokugcina amanzi kubalulekile kwimpumelelo yokusebenza kwe-polymer EOR.
Ixesha lokuposa: Dec-18-2018