Dispersions ye polymer particles muchikamu chemvura (latexes) ine akawanda akakosha maapplication mucoatings tekinoroji, imaging yekurapa, uye cell biology.Chikwata cheFrench chevaongorori ikozvino chagadzira nzira, yakataurwa mumagaziniAngewandte Chemie International Edition, kugadzira yakagadzikana yepolystyrene dispersions ine hombe isina kumboitika uye yakafanana particle size.Kugovera saizi yakatetepa kwakakosha mune akawanda epamberi matekinoroji, asi aimbove akaoma kugadzira photochemically.
Polystyrene, inowanzo shandiswa kugadzira furo rakawedzerwa, inokodzerawo kugadzirwa kwelatexes, umo madiki madiki polystyrene particles anomiswa.Iwo anoshandiswa mukugadzira mapendi nependi uye zvakare kuitira calibration zvinangwa mumicroscope pamwe nemukati.mifananidzo yezvokurapauye tsvakurudzo yebhayoroji yemasero.Zvinowanzogadzirwa ne thermally kana redox-inducedpolymerizationmukati memhinduro.
Kuti vawane kutonga kwekunze pamusoro pemaitiro aya, zvikwata Muriel Lansalot, Emmanuel Lacôte, naElodie Bourgeat-Lami kuUniversité Lyon 1, France, nevamwe vaanoshanda navo, vatendeukira kumaitiro anofambiswa nemwenje."Light-driven polymerization inovimbisa kutonga kwenguva, nekuti polymerization inongoitika pamberi pechiedza, nepo nzira dzekupisa dzinogona kutangwa asi dzisingamisiki kana dzichinge dzava kuitika," Lacôte anodaro.
Kunyangwe UV- kana yebhuruu-mwenje-yakavakirwa photopolymerization masisitimu akaiswa, ane magumo.Short-wavelength radiation inopararira kana iyoparticle sizeinova pedyo nemwaranzi wavelength, zvichiita kuti latexes ine particle size yakakura kudarika iri kuuya yavelengths yakaoma kugadzira.Pamusoro pezvo, mwenje weUV wakanyanya-simba simba, tisingataure zvine njodzi kune vanhu vanoshanda nawo.
Saka vatsvakurudzi vakagadzira yakanyatso-tuned kemikari yekutanga sisitimu inopindura kune yakajairwa mwenje we LED mumhando inooneka.Iyi polymerization system, iyo yakavakirwa padhayi yeacridine, stabilizer, uye musanganiswa weborane, ndiyo yekutanga kukunda "300-nanometer ceiling," muganhu wehukuru hweUV uye yeblue-light-driven polymerization munzvimbo yakapararira.Nekuda kweizvozvo, kekutanga, timu yakakwanisa kushandisa mwenje kugadzira polystyrene latexes ine particle size yakakura kupfuura imwe micrometer uye ine madhayamita akafanana zvakanyanya.
Chikwata chinokurudzira zvikumbiro zvakapfuurapolystyrene."Sitimu iyi inogona kushandiswa munzvimbo dzese dzinoshandiswa latexes, senge mafirimu, machira, zvitsigiro zvekuongorora, nezvimwe," anodaro Lacôte.Mukuwedzera, iyo polymer particles inogona kugadziriswa nayofluorescent dhayi, magineti masango, kana mamwe mabasa anobatsira pakuongorora nekufungidzira maapplication.Chikwata ichi chinoti huwandu hwakakura hwehukuru hunoenderana nenano uye diki zviyero zvinogona kuwanikwa "nekungogadzirisa mamiriro ekutanga.
Nguva yekutumira: Oct-26-2023