2 research outputs found

    Polymer systems which show aggregation induced emission.

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    Celem niniejszej pracy by艂o zbadanie w艂a艣ciwo艣cifizykochemicznych i fotofizycznych zsyntezowanego polielektrolitupoli(2-akryloamido-2-metylo-1-propanosulfonowego kwasutrifenyloaminy)(PAMPS/TPAA )oraz wykazanie efektu emisjiindukowanej agregacj膮. Pocz膮tkowo zbadano polimer uk艂adachrozpuszczalnik organiczny/rozpuszczalnik nieorganiczny w celuzbadania zachowania polimeru PAMPS w roztworach wodnychoraz wykazanie efektu emisji indukowanej agregacja.Przeprowadzono syntez臋 cienkich film贸w polielektrolitowych orazmikrokapsu艂 na sta艂ym rdzeniu. Zbadano w艂a艣ciwo艣cifizykochemiczne powsta艂ych uk艂ad贸w. W przypadku film贸wzbadano w艂a艣ciwo艣ci fizykochemiczne tj. fluorescencja, UV-Visoraz okre艣lono grubo艣膰 warstw przy pomocy elipsometru. Dlakapsu艂 zbadano ich topologi臋 oraz potencja艂 dzeta utworzonychstruktur. Badania te mia艂y na celu sprawdzenie efektu emisjiindukowanej agregacj膮 w cienkich filmach polielektrolitowych podstworzenie uk艂ad贸w w kt贸rych mo偶liwe b臋dzie kontrolowaneprzeniesienie elektronu.The aim of this work was to prove aggregation induced emission(AIE) effect of synthesised polymer containing various amount oftriphenylamine and to synthesise polyelectrolyte multilayer films(PEMs) using layer-by- layer (LBL) method. AIE phenomenawas verified by dissolving both polymers in organic/non-ogranicsolvents and fluorescence measurements during the aggregation.Deposition of PEMs were confirmed using fluorescence method andelypsometry. In addition to PEMs also polyelectrolytemicrocapsules on solid cores were prepared using LBLmethodology. Deposition of polymers onto solid cores wereconfirmed using Dynamic Light Scattering (DLS) and thetopography on Scanning Electron Microscope (SEM). The obtainedresults are very promising and open new strategy for fabrication ofphotoactive polymer films

    Theoretical and Experimental Determination of Thermomechanical Properties of Epoxy-SiO<inf>2</inf> Nanocomposites

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    Improvements in the thermomechanicalproperties of epoxy upon inclusion of well-dispersed SiO2nanoparticles have been demonstrated both experimentally and through molecular dynamics simulations.The SiO2was represented by two different dispersion models: dispersedindividual molecules and as spherical nanoparticles.The calculated thermodynamic and thermomechanical properties were consistent with experimental results. Radial distribution functions highlight the interactions of different parts of the polymer chains with the SiO2between 3 and 5 nminto the epoxy, depending on the particle size.Thefindingsfrombothmodels were verified against experimentalresultslike theglass transitiontemperatureand tensile elasticmechanicalproperties,and proved suitable for predicting thermomechanicaland physicochemical properties of epoxy-SiO2nanocompositesTheoretical and Experimental Determination of Thermomechanical Properties of Epoxy-SiO2 NanocompositespublishedVersio
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