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Diffusion of Methanol, Ethanol and Toluene in Nylon 12 and Poly(butyleneterephthalate)
Author(s) -
Mccourt M. P.,
Mcnally G. M.,
Ruddy A. C.,
Murphy W. R.
Publication year - 2004
Publication title -
developments in chemical engineering and mineral processing
Language(s) - English
Resource type - Journals
eISSN - 1932-2143
pISSN - 0969-1855
DOI - 10.1002/apj.5500120113
Subject(s) - toluene , methanol , solvent , glass transition , dynamic mechanical analysis , diffusion , ethanol , nylon 6 , materials science , chemical engineering , thermal stability , polymer chemistry , polymer , atmospheric temperature range , thermal diffusivity , organic chemistry , nuclear chemistry , chemistry , composite material , thermodynamics , physics , engineering
This work investigates the diffusion of methanol, ethanol and toluene in polybutyleneterephthalate (PBT) and nylon 12 over a range of temperatures from 8d̀C to 60d̀C. The results show that substantial solvent uptake was noted for nylon in methanol and ethanol. Solvent uptake in PBT occurred only at the higher temperatures in toluene. Dynamic mechanical thermal analysis (DMTA) also showed progressive decrease in the glass transition temperature (T g ) and storage modulus (E') with increase in solvent uptake.