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Influence of water on the viscoelastic behavior of recycled nylon 6,6
Author(s) -
VallésLluch A.,
Camacho W.,
RibesGreus A.,
Karlsson S.
Publication year - 2002
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.10838
Subject(s) - differential scanning calorimetry , viscoelasticity , materials science , dynamic mechanical analysis , nylon 6 , relaxation (psychology) , water content , moisture , thermal analysis , composite material , nylon 66 , polymer chemistry , chemical engineering , thermal , thermodynamics , polymer , polyamide , psychology , social psychology , physics , geotechnical engineering , engineering
Nylons are highly sensitive to moisture, as water molecules are able to form hydrogen‐bonded complexes with nitrogen and oxygen from the amide functional groups. In recycled nylon 6,6, a higher absorbed moisture content can be detected in comparison to virgin material. Moisture uptake is manifested in chemical and physical properties, and has important technological consequences, so the relationship between them must be assessed. Differential scanning calorimetry (DSC) has been used to measure the water content of different samples and physical changes have been analyzed by means of dynamic mechanical thermal analysis (DMTA). The relaxation zones of the dynamic‐mechanical relaxation spectra of the samples have been characterized according to the Fuoss‐Kirkwood equation and with help of the deconvolution method. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 85: 2211–2218, 2002