Effect of annealing rate on film formation from poly(vinyl acetate) latex particles
Yükleniyor...
Dosyalar
Tarih
2008
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Taylor & Francis Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The photon transmission technique was used to monitor the time and temperature evolution of film formation from poly(vinyl acetate) (PVAc) latex particles. The latex films were prepared below the glass transition temperature (T-g) of PVAc. These films were annealed at various annealing rates above the Tg of PVAc. It was observed that transmitted photon intensity (I-tr) from these films increased at all annealing rates as the annealing time and temperature are increased. The increase in the I-tr is attributed to the increase in crossing density at the junction surface. The healing points (tau(H), T-H) were determined for various annealing rates and the healing activation energy (Delta H) was measured and found to be 43.4 kcal/mol. The interdiffusion (backbone) activation energies (Delta E) and reptation frequencies (nu) of PVAc chains were measured. The averaged value of Delta E was found to be 226.6 kcal/mol. It is observed that Delta E is unchanged but nu is increased as increasing the annealing rates.
Açıklama
Anahtar Kelimeler
Polymer-polymer interface, Photon transmission, Molecular-weight, Interdiffusion, Temperature, Diffusion, Reptation, Water, Time, Annealing, Latexes, Photons, Polyvinyl acetates, Film formation, Photon transmission technique, Reptation frequency, Thin films
Kaynak
Composite Interfaces
WoS Q Değeri
Q3
Scopus Q Değeri
Q2
Cilt
15
Sayı
1
Künye
Pekcan, M. Ö., Arda, E. & Kara, S. (2008). Effect of annealing rate on film formation from poly(vinyl acetate) latex particles. Composite Interfaces, 15(1), 19-33. doi:10.1163/156855408783431291
