Watsopano njira umabala homogeneous polystyrene microparticles mu khola kubalalitsidwa

Kubalalika kwa tinthu ting'onoting'ono ta polima mu gawo lamadzimadzi (latexes) kuli ndi ntchito zambiri zofunika paukadaulo wakupaka, kujambula zamankhwala, ndi biology yama cell.Gulu la ofufuza a ku France tsopano lapanga njira, inanenedwa m'magaziniyiAngewandte Chemie International Edition, kupanga khola polystyrene dispersions ndi kuposa kale lonse ndi yunifolomu tinthu kukula kwake.Kugawa kwakukula kocheperako ndikofunikira pamakina ambiri apamwamba, koma kale kunali kovuta kupanga photochemically.

Polystyrene, yomwe nthawi zambiri imagwiritsidwa ntchito popanga thovu lokulitsidwa, imakhalanso yoyenera kupanga ma latexes, momwe tinthu tating'onoting'ono ta polystyrene timayimitsidwa.Amagwiritsidwa ntchito popanga zokutira ndi utoto komanso kuwongolera ma microscopy komanso mukujambula kwachipatalandi kafukufuku wa biology yama cell.Nthawi zambiri amapangidwa ndi thermally kapena redox-inducedpolymerizationmkati mwa njira.

Kuti apeze ulamuliro wakunja pa ntchitoyi, magulu a Muriel Lansalot, Emmanuel Lacôte, ndi Elodie Bourgeat-Lami ku Université Lyon 1, France, ndi anzawo, atembenukira ku njira zoyendetsedwa ndi kuwala."Polymerization yoyendetsedwa ndi kuwala imatsimikizira kulamulira kwakanthawi, chifukwa polymerization imangochitika pamaso pa kuwala, pomwe njira zotentha zimatha kuyambika koma osayimitsidwa zikangoyamba," akutero Lacôte.

Ngakhale makina a UV- kapena a blue-light-based photopolymerization akhazikitsidwa, ali ndi malire.Short-wavelength ma radiation amwazikana pamenekukula kwa tinthuimakhala pafupi ndi kutalika kwa mawonekedwe a radiation, kupangitsa kuti latexes yokhala ndi tinthu ting'onoting'ono tokulirapo kuposa mafunde omwe akubwera ovuta kupanga.Kuphatikiza apo, kuwala kwa UV kumagwiritsa ntchito mphamvu zambiri, osanenapo zowopsa kwa anthu omwe akugwira nawo ntchito.

Chifukwa chake ochita kafukufukuwo adapanga njira yabwino yoyambira mankhwala yomwe imayankhidwa ndi kuwala kwa LED komwe kumawonekera.Dongosolo la polymerization iyi, lomwe limapangidwa ndi utoto wa acridine, zolimbitsa thupi, ndi gulu la borane, linali loyamba kugonjetsa "denga la nanometer 300," malire a kukula kwa UV ndi polymerization yoyendetsedwa ndi kuwala kwa buluu m'malo obalalitsidwa.Chotsatira chake, kwa nthawi yoyamba, gululo linatha kugwiritsa ntchito kuwala kupanga polystyrene latexes yokhala ndi tinthu tating'onoting'ono toposa micrometer imodzi ndi ma diameter apamwamba kwambiri.

Gululo limapereka zofunsira kupitilira apopolystyrene."Dongosololi litha kugwiritsidwa ntchito m'malo onse omwe latexes amagwiritsidwa ntchito, monga mafilimu, zokutira, zothandizira zowunikira, ndi zina zambiri," akutero Lacôte.Komanso, polima particles akhoza kusinthidwa ndiutoto wa fulorosenti, magulu a maginito, kapena ntchito zina zothandiza pakuwunika ndi kujambula.Gululo likuti mitundu ingapo ya tinthu tating'onoting'ono tomwe timayambira pa nano ndi masikelo ang'onoang'ono atha kupezeka "pongosintha momwe zinalili poyamba.