首页|Visualization of Macrophase Separation and Transformation in Immiscible Polymer Blends
Visualization of Macrophase Separation and Transformation in Immiscible Polymer Blends
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Identification and visualization of phase structures in-side polymer blends are of critical importance in the understanding of their intrinsic structure and dynamics.However,the direct optical observation of the individ-ual component phase in a dense bulk material poses a significant challenge.Herein,three-dimensional fluorescence imaging of phase separation and real-time visualization of phase transformation in immisci-ble polymer blends of polypropylene and polystyrene is realized through multiphoton laser scanning micros-copy.Owing to the specific fluorescence behavior of the cyanostyrene derivative 2-(4-bromophenyl)-3-(4-(4-(diphenylamino)styryl)phenyl)fumaronitrile,the high-contrast imaging of the macrophase of the com-ponent polymer in two and three dimensions with a maximum depth of 140 μm and a high signal-to-noise ratio of 300 can be achieved.Detailed spectroscopic and structural studies reveal that the distinctive fluo-rescence features of each phase domain should origi-nate from the formation of a completely different aggregate between probes and component polymer.Furthermore,visualizations of the internal morphology deformation and macrophase transformation were re-alized by employing a stretched dumbbell sample un-der constant tension.
State Key Laboratory of Supramolecular Structure and Materials,College of Chemistry,Jilin University,Changchun,Jilin 130012
Key Laboratory of Rubber-Plastics,Ministry of Education,Shandong Provincial Key Laboratory of Rubber-Plastics,School of Polymer Science and Engineering,Qingdao University of Science and Technology,Qingdao,Shandong 266042
国家自然科学基金国家自然科学基金国家自然科学基金JLU Science and Technology Innovative Research Team
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NSTL
万方数据
维普
