Matches in SemOpenAlex for { <https://semopenalex.org/work/W2036175044> ?p ?o ?g. }
Showing items 1 to 88 of
88
with 100 items per page.
- W2036175044 abstract "The humidity sensitivity of nylon polymers is well known, as is the fact that certain nylons (such as nylon 6) can crystallize in different lattice forms. As part of a study of the effect of swelling agents on nylon 6, particularly those which cause morphological changes (such as phenol and aqueous potassium triiodide), we have made dielectric measurements (of both ϵ′ and ϵ″) on nylon 6 films subjected to the action of swelling agents and absorbed water as a means of obtaining further information on the morphology of the polymer and the effects of crystal morphology changes on the properties of the amorphous regions (since it is essentially the behavior of the amorphous regions which is observed in dielectric measurements). These measurements were made in a special dielectric cell in which both temperature and atmospheric humidity could be regulated. The temperature and frequency ranges covered were 25–170dC and 20-2 × 106 Hz, and RH was varied from 0% to 100%.In studies of the effect of humidity alone, it was found that both time-temperature (frequency-temperature) superposition and humidity-temperature superposition could be applied to the experimental data within certain ranges, but not outside those limits. In the case of absorbed moisture, it was found that the first 2% absorbed produced effects which were different from those produced by additional amounts of absorbed water. The latter seemed to act as a simple plasticizer, and simple horizontal superposition shifting was possible in this range. In the lower humidity range, vertical as well as horizontal shifting of curves was required. This difference in nature of the first 2–3 % of water absorbed in nylon 6 has also been documented recently by Papir, Kapur, Rogers and Baer [J. Polym. Sci., A-2, 10, 1305 (1972)].The region in which simple horizontal time-temperature superposition can be applied is evidently related to the type of state or system which Hopkins has denoted as “thermorheologically simple,” and the concept can be extended to plasticized systems. This implies a system where the structure is stable; i.e., in the present case, where no changes take place in the crystalline phase during the measurements, and the amorphous phase is therefore free to behave in a classically simple manner.The form of the dielectric loss curve, both as regards area under the curve (representing a total “dielectric dispersion strength”) and the width of the loss peak (representing the spread of the distribution of dielectric relaxation times) was analyzed as a function of temperature and RH. Both of these parameters showed a significant increase above the glass transition (80dC in dry nylon 6). The area actually goes through a maximum, and decreases at still higher temperatures. This behavior is essentially the same in the original polymer (containing smectric hexagonal crystallinity) and in samples with developed and stabilized α and γ crystal forms (produced by phenol and triiodide treatments), indicating that the nature of the amorphous regions is relatively unaffected by crystalline morphology changes in the polymer." @default.
- W2036175044 created "2016-06-24" @default.
- W2036175044 creator A5012083885 @default.
- W2036175044 creator A5039291223 @default.
- W2036175044 date "2009-02-09" @default.
- W2036175044 modified "2023-09-25" @default.
- W2036175044 title "Dielectric behavior and morphological changes in nylon 6: Applicability of time-temperature superposition" @default.
- W2036175044 doi "https://doi.org/10.1002/polc.5070460116" @default.
- W2036175044 hasPublicationYear "2009" @default.
- W2036175044 type Work @default.
- W2036175044 sameAs 2036175044 @default.
- W2036175044 citedByCount "0" @default.
- W2036175044 crossrefType "journal-article" @default.
- W2036175044 hasAuthorship W2036175044A5012083885 @default.
- W2036175044 hasAuthorship W2036175044A5039291223 @default.
- W2036175044 hasConcept C121332964 @default.
- W2036175044 hasConcept C133386390 @default.
- W2036175044 hasConcept C151420433 @default.
- W2036175044 hasConcept C158960510 @default.
- W2036175044 hasConcept C159985019 @default.
- W2036175044 hasConcept C178790620 @default.
- W2036175044 hasConcept C185592680 @default.
- W2036175044 hasConcept C188027245 @default.
- W2036175044 hasConcept C192562407 @default.
- W2036175044 hasConcept C199360897 @default.
- W2036175044 hasConcept C27753989 @default.
- W2036175044 hasConcept C2777673350 @default.
- W2036175044 hasConcept C2778540859 @default.
- W2036175044 hasConcept C2781215361 @default.
- W2036175044 hasConcept C2781285689 @default.
- W2036175044 hasConcept C39353612 @default.
- W2036175044 hasConcept C41008148 @default.
- W2036175044 hasConcept C46275449 @default.
- W2036175044 hasConcept C49040817 @default.
- W2036175044 hasConcept C521977710 @default.
- W2036175044 hasConcept C56052488 @default.
- W2036175044 hasConcept C62520636 @default.
- W2036175044 hasConcept C97355855 @default.
- W2036175044 hasConceptScore W2036175044C121332964 @default.
- W2036175044 hasConceptScore W2036175044C133386390 @default.
- W2036175044 hasConceptScore W2036175044C151420433 @default.
- W2036175044 hasConceptScore W2036175044C158960510 @default.
- W2036175044 hasConceptScore W2036175044C159985019 @default.
- W2036175044 hasConceptScore W2036175044C178790620 @default.
- W2036175044 hasConceptScore W2036175044C185592680 @default.
- W2036175044 hasConceptScore W2036175044C188027245 @default.
- W2036175044 hasConceptScore W2036175044C192562407 @default.
- W2036175044 hasConceptScore W2036175044C199360897 @default.
- W2036175044 hasConceptScore W2036175044C27753989 @default.
- W2036175044 hasConceptScore W2036175044C2777673350 @default.
- W2036175044 hasConceptScore W2036175044C2778540859 @default.
- W2036175044 hasConceptScore W2036175044C2781215361 @default.
- W2036175044 hasConceptScore W2036175044C2781285689 @default.
- W2036175044 hasConceptScore W2036175044C39353612 @default.
- W2036175044 hasConceptScore W2036175044C41008148 @default.
- W2036175044 hasConceptScore W2036175044C46275449 @default.
- W2036175044 hasConceptScore W2036175044C49040817 @default.
- W2036175044 hasConceptScore W2036175044C521977710 @default.
- W2036175044 hasConceptScore W2036175044C56052488 @default.
- W2036175044 hasConceptScore W2036175044C62520636 @default.
- W2036175044 hasConceptScore W2036175044C97355855 @default.
- W2036175044 hasLocation W20361750441 @default.
- W2036175044 hasOpenAccess W2036175044 @default.
- W2036175044 hasPrimaryLocation W20361750441 @default.
- W2036175044 hasRelatedWork W118450342 @default.
- W2036175044 hasRelatedWork W1966246870 @default.
- W2036175044 hasRelatedWork W1968725722 @default.
- W2036175044 hasRelatedWork W1977569557 @default.
- W2036175044 hasRelatedWork W1984666263 @default.
- W2036175044 hasRelatedWork W1995869438 @default.
- W2036175044 hasRelatedWork W2011386254 @default.
- W2036175044 hasRelatedWork W2063091865 @default.
- W2036175044 hasRelatedWork W2066003194 @default.
- W2036175044 hasRelatedWork W2086773999 @default.
- W2036175044 hasRelatedWork W2096836330 @default.
- W2036175044 hasRelatedWork W2102745975 @default.
- W2036175044 hasRelatedWork W2121152775 @default.
- W2036175044 hasRelatedWork W2315112188 @default.
- W2036175044 hasRelatedWork W2318496459 @default.
- W2036175044 hasRelatedWork W2507347856 @default.
- W2036175044 hasRelatedWork W2547845984 @default.
- W2036175044 hasRelatedWork W2547932896 @default.
- W2036175044 hasRelatedWork W973837293 @default.
- W2036175044 hasRelatedWork W2977198379 @default.
- W2036175044 isParatext "false" @default.
- W2036175044 isRetracted "false" @default.
- W2036175044 magId "2036175044" @default.
- W2036175044 workType "article" @default.