Site Percolation Model for Latex Film Formation in Soft Polymer Matrix

Pekcan, Önder; Arda, Ertan

doi:10.1006/jcis.2002.8354

Cited by 8 publications

(5 citation statements)

References 30 publications

(40 reference statements)

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“…The most important finding of this work is the low percolation threshold (around 0.1%) of the optical transparency, which is usually known to be around 0.25 in 3D systems [29][30][31][32]. Here, however, opaqueness starts to percolate quite early by predicting similar behavior of electrical conductivity in the composite.…”

Section: Discussionmentioning

confidence: 80%

Electrical and optical percolations of polystyrene latex–multiwalled carbon nanotube composites

Kara

Arda

Dolastir

et al. 2010

Journal of Colloid and Interface Science

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Section: Discussionmentioning

confidence: 80%

Electrical and optical percolations of polystyrene latex–multiwalled carbon nanotube composites

Kara

Arda

Dolastir

et al. 2010

Journal of Colloid and Interface Science

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“…18 Void closure mechanism takes place between T 0 and healing temperature (T h ) which is the onset temperature for interdiffusion mechanism and the adhesion of latex particles. 19 At and above T h , nanocomposite films turn into void-free and continuous structures. T h can be estimated from the intersection of two different regions in I tr plot given in logarithmic scale (see Figures 5 and S1).…”

Section: Resultsmentioning

confidence: 99%

Film formation kinetics of polystyrene latex‐based nanocomposites with a broad particle size distribution

Demirbay

2023

Polymer Engineering & Sci

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The present study article aims to clarify the effect of colloidal polystyrene (PS) latexes with a broad particle size distribution on film formation kinetics of multi‐walled carbon nanotube (MWCNT)‐added polymer nanocomposites by considering theoretical film formation models. Experimentally, light transmitted from nanocomposite films, each having different weight fractions of MWCNT, was recorded at different annealing temperatures via UV–Visible spectrophotometry. Optical data set was then theoretically elaborated by taking into account void closure and Prager‐Tirrell models. Activation energies of viscous flow (ΔH) and backbone motion for reptating PS chains (ΔEB), minimum film formation (T0) and healing (Th) temperatures were then computed from optical data. Experimental results revealed that ΔH required for void closure phenomenon remained unaffected by both nanofiller and size distribution of latexes. On the other hand, it was found that ΔEB for backbone motion promoted upon the addition of nano‐fillers into latex particles. Our experimental findings suggested that film formation from MWCNT‐added latex films with a broad particle size distribution mainly originates from void closure mechanism since ΔH for viscous flow suppresses ΔEB acquired for backbone motion of repeating PS chains to a great extent.Highlights A broad size distribution effect of PS on film formation was investigated. Voids closure and Prager‐Tirrell models were applied to spectroscopic data. Activation energy of viscous flow is unaffected by size distribution of PS. Latex film formation with varying size distribution stems from void closure.

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“…If R is assumed to be the occupation probability, p of Al 2 O 3 in the whole lattice then the percolation threshold, p c becomes R c and if once again P ∞ (p) is considered to be proportional to the transmitted light intensity, I tr then Eq. (1) can be written as [30] (4)…”

Section: Resultsmentioning

confidence: 99%