Publication: Effects of annealing on morphology of polymer/polymer (PS/PMMA) blend; a fluorescence study
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Wiley
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Abstract
AbstractSteady state fluorescence (SSF) technique conjunction with optical microscopy were used to study the morphology of polystyrene (PS)/poly(methyl methacrylate) (PMMA) blend upon annealing above glass transition in elevated time intervals. The PS/PMMA blends were prepared from dissolution of pyrene (P) and naphthalene (N) labeled PS and PMMA particles, respectively. Monte Carlo simulations were performed to model the N and P fluorescence intensities (IN and IP), using photon diffusion theory. Number of N and P photons (NN and NP) emerging from the front surface of the blend are calculated when only N is excited, where NP photons are combined of photons from radiative (NPR) and nonradiative (NPNR) energy transfer processes. Optical microscopy images were taken at each annealing step to support our findings from fluorescence measurements. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100: 2104–2110, 2006
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Journal or Series
Journal of Applied Polymer Science
ISSN
0021-8995
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CLOSED
Keywords
Morphology, Poly(methyl methacrylate), Void closure, Blend, Optical microscopy, Fluorescence, PMMA particles, Annealing, Energy-transfer, Diffusion, Polymer blends, Polymer/polymer (PS/PMMA) blends, Interdiffusion processes, Microscopy, Temperature, Fluorescence intensities, Monte Carlo methods, Polymer blend, Computer simulation, Surface, Particles, Polymethyl methacrylate, Energy transfer, Latex film formation, Polystyrenes, Steady state fluorescence (SSF) technique, Polymer diffusion, Glass transition, Diblock copolymers