Interdiffusion at polymer-polymer interfaces during film formation from high-T latex particles
Turkish Journal of Physics, vol.20, no.1, pp.17-26, 1996 (Scopus)
- Publication Type: Article / Article
- Volume: 20 Issue: 1
- Publication Date: 1996
- Doi Number: 10.55730/1300-0101.2651
- Journal Name: Turkish Journal of Physics
- Journal Indexes: Scopus, TR DİZİN (ULAKBİM)
- Page Numbers: pp.17-26
- Akdeniz University Affiliated: No
Abstract
A steady state fluorescence technique was used to examine the annealing of films formed from high-T latex particles above the glass transition temperature.The films were prepared by sintering pyrene labelled poly (methyl methacrylate) latex particles. During the annealing processes, the transparency of the film changed considerably. Direct fluorescence emission from excited pyrene was monitored as a function of annealing temperature to detect these changes. Monte Carlo simulations of photon diffusion in latex film were used to interpret the fluorescence results. Healing temperature and time were measured at the point where the fluorescence emission intensity becomes maximum. This was associated with the longest optical path of a photon in latex film during healing of particle-particle boundaries. Healing activation energy was measured and found to be 10 kcal/mol.