Time evolution of film formation from polystyrene particles: a percolation approach

Yükleniyor...
Küçük Resim

Tarih

2005-12

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Springer

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Araştırma projeleri

Organizasyon Birimleri

Dergi sayısı

Özet

This work reports the film formation process from surfactant-free polystyrene (PS) latex particles. Steady state fluorescence and photon transmission techniques were used to study the evolution of film formation. The films were prepared from fluorescein (F)-labeled PS latex particles at room temperature and annealed in 2.5-min-time intervals above the glass transition temperature (T-g) of PS. Fluorescence intensity (I-F) from F was measured after each annealing step to monitor the stages of film formation. Evolution of transparency of latex films was monitored by using the photon transmission intensity, I-tr. Drastic increase in I-tr and I-F above the critical annealing times t(r) and t(c) respectively, were attributed to the percolation behavior of the PS material. Critical exponents, beta, of percolation clusters were measured and found to be around 0.31 and 0.37 for Itr and IF measurement, respectively, which were attributed to the site percolation model.

Açıklama

Anahtar Kelimeler

T latex-particles, Photon transmission, Molecular-weight, Energy-transfer, Diffusion, Fluorescence, Fracture, Interdiffusion, Coalescence, Polymers, Latex film, Percolation, Transmitted light, Polystyrene particles, Film preparation, Light transmission, Mathematical models, Percolation (fluids), Photons, Fluorescein, Latex, Polystyrene, Surfactant, Cross linking, Film, Fluorescence analysis, Glass transition temperature, Priority journal, Room temperature, Steady state, Film formation, Polystyrene (PS) latex particles, Polystyrenes

Kaynak

Colloid and Polymer Science

WoS Q Değeri

Q3
Q3

Scopus Q Değeri

Q2

Cilt

284

Sayı

3

Künye

Uğur, Ş. & Pekcan, M. Ö. (2005). Time evolution of film formation from polystyrene particles: A percolation approach. Colloid and Polymer Science, 284(3), 309-316. doi:10.1007/s00396-005-1380-8