Films formed from polystyrene latex/clay composites: A fluorescence study
Yükleniyor...
Tarih
2005-07
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer New York
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
This study reports a steady-state fluorescence (SSF) technique for studying film formation from surractant-free polystyrene (PS) latex and Na-montmorillonite (SNaM) composites. The composite films were prepared from pyrene (P)-labeled PS particles and SNaM clay at room temperature and annealed at elevated temperatures in 10-min intervals above glass transition temperature (T-g) of polystyrene. During the annealing processes, the transparency of the fllm improved considerably. Scattered light (I-s) and fluorescence intensity (I-s) from P were measured after each annealing step to monitor the stages of film formation. Evolution of transparency of composite films was monitored by using photon transmission intensity, I-tr Scanning electron microscopy (SEM) was used to detect the variation in physical structure of annealed composite-films. Minimum flIm formation temperature, T-o, and healing temperatures, T-h, were determined. Void closure and interdiff-usion stages were modeled and related activation energies were determined. It was observed that both activation energies increased as the percent of SNaM was increased in composite films.
Açıklama
Materials Engineering Department at ITU) for helping us to take SEM micrographs. One of us (OP) also thanks the Turkish Academy of Sciences (TUBA) for their partial support.
Anahtar Kelimeler
Layered silicate nanocomposites, Polymer-polymer interface, Poly(methyl methacrylate), Photon transmission, Energy-transfer, Particles, Diffusion, Density, Interdiffusion, Viscosity, Composite, Void closure, Fluorescence, Polystyrene latex, Montmorillonite, Atomic force, Fluorescence spectroscopy, Latexes, Colloids, Emulsions, Clay, Latex, Water-based, Composite materials
Kaynak
Journal of Coatings Technology Research
WoS Q Değeri
Q3
Scopus Q Değeri
Q2
Cilt
2
Sayı
7
Künye
Ugur, Ş., Alemdar, A. & Pekcan, M. Ö. (2005). Films formed from polystyrene latex/clay composites: A fluorescence study. JCT Research, 2(7), 565-575. doi:10.1007/s11998-005-0016-8
