Vapor-induced film formation from low-Tg particles for different solvent compositions
Küçük Resim Yok
Tarih
2006
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Academic Press Inc Elsevier Science
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The photon transmission method was used to study latex film formation from poly(vinyl acetate) (PVAc) particles induced by two different solvents. Films with the same latex content were prepared from PVAc particles and exposed to vapor of ethanol-water and acetone-water mixtures in various compositions. Transmitted photon intensities, I-tr, from these films increased with increasing vapor exposure time. The increase in I-tr is attributed to the increase in crossing density at the polymer-polymer junction. The Prager-Tirrell model was employed to obtain the back-and-forth frequency, v, of the reptating polymer chain during film formation induced by solvent vapor. It was observed that the produced v values increase as the solvent content is increased for both solvents. Abilities of both solvents to form films were interpreted with the solubility parameters of the solvents and the PVAc. (c) 2005 Elsevier Inc. All rights reserved.
Açıklama
Anahtar Kelimeler
Film Formation, Solvent Vapor, Chain Reptation, Reptation Frequency, Polymer Diffusion, Latex Films, Interdiffusion, Transmission, Interfaces, Reptation
Kaynak
Journal Of Colloid And Interface Science
WoS Q Değeri
Q2
Scopus Q Değeri
Q1
Cilt
297
Sayı
2
