Methanol desorption in poly(methyl methacrylate) with stress distributions

Donyau Chiang, Fuqian Yang, Chi Wei Liu, Kuo Chen Ho, Sanboh Lee

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


Understanding solvent transport in polymers is of practical importance for the applications of polymers in the fields of food packaging, biomedical bandages, materials engineering, etc. We studied one-side desorption in poly(methyl methacrylate) (PMMA). Experimental results showed that methanol desorption in PMMA depended on temperature and the initial distribution of concentration. The diffusion coefficient in PMMA and the evaporation rate of methanol across the PMMA surface followed the Arrhenius relation. The activation energies for the diffusion and the evaporation of methanol are 18.3, 42.6 and 8.6, 18.3 kJ/mol for the specimens with the ratio of initial mass to the equilibrium saturated absorbed mass, Mi/M∞, being 14.6% and 35.3%, respectively. The partial molal volume increased with the increase of the desorption temperature for Mi/M∞= 14.6%, while it had an opposite trend for M i/M∞= 35.5%. The chemical stresses developed in PMMA during the desorption were also studied.

Original languageEnglish
Pages (from-to)2162-2169
Number of pages8
JournalJournal of Materials Research
Issue number18
StatePublished - Aug 1 2014

Bibliographical note

Publisher Copyright:
Copyright © 2014 Materials Research Society.

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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