Kala firdhinta walxaha polymerka ee wejiga dareeraha ah (latexes) waxay leeyihiin codsiyo badan oo muhiim ah oo ku saabsan tignoolajiyada dahaarka, sawirka caafimaadka, iyo bayoolajiga unugyada.Koox Faransiis ah oo cilmi-baarayaal ah ayaa hadda sameeyay hab, lagu sheegay joornaalkaDaabacaadda Caalamiga ah ee Angewandte Chemie, si loo soo saaro kala firdhisanaan polystyrene deggan oo leh cabbirro qurubyo aan horay loo arag oo waaweyn iyo labis.Qaybinta cabbirka cidhiidhiga ah ayaa lagama maarmaan u ah tignoolajiyada horumarsan ee badan, laakiin markii hore way adkeyd in la soo saaro kiimiko ahaan.
Polystyrene, oo inta badan loo isticmaalo in lagu abuuro xumbo balaariyay, ayaa sidoo kale si fiican ugu habboon soo saarista caarada, kaas oo walxaha yar yar ee polystyrene ay laalan yihiin.Waxaa loo isticmaalaa soo saarista dahaarka iyo rinjiyada iyo sidoo kale ujeedooyinka cabbirka ee microscopy iyo sidoo kale gudahasawir-caafimaadiyo cilmi-baarista bayoolajiga unugga.Caadi ahaan waxaa lagu soo saaraa kuleyl ahaan ama dib-u-celinpolymerizationgudaha xalka.
Si loo helo koontarool dibadeed oo ku saabsan habka, kooxaha Muriel Lansalot, Emmanuel Lacote, iyo Elodie Bourgeat-Lami ee Université Lyon 1, France, iyo asxaabtooda, waxay u jeesteen hababka iftiinka ah."Polymerization-ka iftiinka ku shaqeeya waxay hubisaa xakamaynta ku-meel-gaadhka ah, sababtoo ah polymerization waxay ku socotaa oo kaliya joogitaanka iftiinka, halka hababka kulaylka la bilaabi karo laakiin aan la joojin marka ay socdaan," Lacôte ayaa yidhi.
Inkasta oo hababka sawir-qaadista ee UV- ama buluug-light-ku-saleysan la sameeyay, waxay leeyihiin xaddidaadyo.Shucaaca hirarka gaaban waa uu kala firdhiyaa markacabbirka walxahawuxuu u dhawaadaa hirarka shucaaca, taasoo ka dhigaysa cirifka xajmiyada qaybo ka weyn mawjadaha soo socda oo adag in la soo saaro.Intaa waxaa dheer, iftiinka UV waa mid aad u xoog badan oo tamar ah, oo aan la sheegin khatar ku ah bini'aadamka la shaqeeya.
Sidaa darteed cilmi-baarayaashu waxay soo saareen nidaam kiimiko oo si fiican loo hagaajiyay kaas oo ka jawaabaya iftiinka LED-ka ee qiyaasta muuqda.Nidaamkan polymerization, kaas oo ku salaysan dheeha acridine, stabilizers, iyo xayndaab borane ah, ayaa ahaa kii ugu horreeyay ee ka adkaada "saqafka 300-nanometer", cabbirka cabbirka UV iyo polymerization-ka buluugga ah ee buluugga ah ee dhexdhexaad ah.Natiijo ahaan, markii ugu horeysay, kooxdu waxay awood u yeelatay inay isticmaalaan iftiin si ay u soo saaraan caarada polystyrene ee leh cabbirka walxaha ka weyn hal mikrometer iyo dhexroor aad u sarreeya.
Kooxdu waxay soo jeedinaysaa codsiyo aad u dhaafsiisanpolystyrene."Nidaamka waxaa suurtogal ah in loo isticmaalo dhammaan meelaha laga isticmaalo caarada, sida filimada, dahaarka, taageerada ogaanshaha, iyo wax ka badan," Lacôte ayaa sidaas yidhi.Intaa waxaa dheer, walxaha polymer ayaa lagu beddeli karaamidabyo fluorescent, kooxo birlab ah, ama hawlo kale oo waxtar u leh codsiyada ogaanshaha iyo sawirka.Kooxdu waxay sheegtay in tiro balaadhan oo xajmi-qaybeed ah oo ka kooban nano iyo miisaan yar ay la heli karo “si fudud iyadoo la hagaajinayo xaaladaha bilowga ah.
Waqtiga boostada: Oct-26-2023