Dispersions ntawm polymer hais nyob rau hauv ib tug ua kua theem (latexes) muaj ntau yam tseem ceeb daim ntawv thov nyob rau hauv txheej txheej technology, kev kho mob imaging, thiab cell biology.Ib pab neeg tshawb fawb Fab Kis tam sim no tau tsim ib txoj hauv kev, tshaj tawm hauv phau ntawv xov xwmAngewandte Chemie International Edition, ua kom ruaj khov polystyrene dispersions nrog unprecedentedly loj thiab tsis zoo particle qhov ntau thiab tsawg.Kev faib tawm me me yog qhov tseem ceeb hauv ntau cov thev naus laus zis, tab sis yav dhau los nyuaj los tsim cov tshuaj photochemical.
Polystyrene, feem ntau siv los tsim ua npuas ncauj nthuav dav, kuj zoo rau kev tsim cov latexes, uas cov microscopically me me polystyrene hais raug tshem tawm.Lawv yog siv nyob rau hauv kev tsim cov txheej thiab xim thiab kuj rau calibration lub hom phiaj nyob rau hauv microscopy raws li zoo raws li nyob rau hauvdaim duab kho mobthiab kev tshawb nrhiav cell biology.Lawv feem ntau yog tsim los ntawm thermally lossis redox-inducedpolymerizationhauv kev daws teeb meem.
Txhawm rau kom tau txais kev tswj hwm sab nraud ntawm cov txheej txheem, pawg Muriel Lansalot, Emmanuel Lacôte, thiab Elodie Bourgeat-Lami ntawm Université Lyon 1, Fabkis, thiab cov npoj yaig, tau tig mus rau cov txheej txheem teeb tsa.Lacôte hais tias "Lub teeb-tsav polymerization ua kom tswj tau lub cev, vim tias polymerization ua haujlwm tsuas yog nyob rau hauv lub teeb pom kev, thaum cov txheej txheem thermal tuaj yeem pib tab sis tsis nres thaum lawv tab tom ua," Lacôte hais.
Txawm hais tias UV- lossis xiav-lub teeb-raws li photopolymerization tshuab tau tsim, lawv muaj kev txwv.Luv-yoj hluav taws xob tawg yog tawg thaum lubparticle lojua nyob ze rau ntawm cov hluav taws xob wavelength, ua latexes nrog particle loj loj dua cov tuaj wavelengths nyuaj rau tsim.Tsis tas li ntawd, UV teeb yog lub zog siv zog heev, tsis hais txog kev phom sij rau tib neeg ua haujlwm nrog nws.
Cov kws tshawb fawb thiaj li tsim kho cov tshuaj tua kab mob zoo uas tau teb rau cov qauv LED teeb nyob rau hauv qhov pom ntau yam.Qhov no polymerization system, uas yog raws li ib tug acridine dye, stabilizers, thiab ib tug borane compound, yog thawj zaug kov yeej lub "300-nanometer qab nthab," qhov loj txwv ntawm UV thiab xiav-lub teeb-tsav polymerization nyob rau hauv ib tug dispersed nruab nrab.Raws li qhov tshwm sim, thawj zaug, pab neeg no tuaj yeem siv lub teeb los tsim cov polystyrene latexes nrog qhov ntau thiab tsawg dua li ib micrometer thiab nrog cov kab uas sib txawv heev.
Pab neeg no qhia cov ntawv thov zoo tshajpolystyrene.Lacôte hais tias "Lub kaw lus tuaj yeem siv tau rau txhua qhov chaw uas siv cov roj hmab, xws li cov yeeb yaj kiab, txheej txheej, kev txhawb nqa rau kev kuaj mob, thiab lwm yam," Lacôte hais.Tsis tas li ntawd, cov khoom siv polymer tuaj yeem hloov kho nrogfluorescent dyes, sib nqus pawg, lossis lwm yam haujlwm muaj txiaj ntsig zoo rau kev kuaj mob thiab kev siv duab.Pab neeg no hais tias ntau qhov sib txawv ntawm qhov ntau thiab tsawg ntawm nano thiab micro nplai yuav nkag mus tau "tsuas yog los ntawm kev kho qhov pib mob.
Post lub sij hawm: Oct-26-2023