Packing effect on latex film formation and dissolution; a UV-Visible study


Pekcan O., Arda E.

2nd International Conference on Subsurface Sensing Technologies and Applications, California, United States Of America, 31 July - 03 August 2000, vol.4129, pp.314-321 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 4129
  • Doi Number: 10.1117/12.390628
  • City: California
  • Country: United States Of America
  • Page Numbers: pp.314-321

Abstract

Films with various thicknesses were formed from pyrene (P) labeled poly (methyl methacrylate) (PMMA) high T-g latex particles, sterically stabilized by poly isobutylene (PIB). Annealing of films were performed above T-g at elevated temperatures up to 270 degreesC for 30 min time intervals. UV-Visible (UVV) technique was used for monitoring of film formation and dissolution. Absorption of chloroform molecules into the annealed latex film was followed by diffusion of PMMA chains into solvent reservoir. Diffusion coefficients of PMMA chains were measured and found to be in between 2.6x10(-9) cm(2) s(-1) to 9.7x10(-13) cm(2) s(-1) for the latex films in various thicknesses. It was observed that thicker films dissolved much faster than the thinner films.