FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2007230069> ?p ?o ?g. }

• W2007230069 endingPage "58" @default.
• W2007230069 startingPage "49" @default.
• W2007230069 abstract "A non-destructive UV–Vis spectroscopic method to study the aging of nitrocellulose (NC) has been described. The method involves determining the change of absorbance with time of a dye mixed with NC in a thin film. During the aging of the NC two secondary and one primary CO–NO2 groups at the anhydroglucopyranose (AHP) ring positions C2, C3 and C6 undergo decomposition and this leads to NOx formation. The NOx nitrates the dye and the decrease in the concentration of the original un-nitrated dye is followed by UV–Vis spectroscopy. Thin films with uniform thickness were prepared on glass slides by casting solutions of NC in butanone containing an anthraquinone dye (SB59) and dioctyl phthalate as a plasticiser. The colour of the films changed gradually from blue to red during accelerated thermal aging, in line with changes in the UV–Vis spectra of the dye and its nitrated derivatives. The reaction of the dye with NOx was monitored by periodically recording the absorption spectra of the films. The graphs of the logarithmic absorbance as function of aging time produced non-linear plots. However, splitting the data into three time intervals was found to give rise to three linear regions with three distinct rate constants. In an initial attempt at modelling, first order-rate constants were obtained from the gradients of the ‘ln(AS(0)/AS(t)) vs aging time’ plots. The Arrhenius expressions derived from the data for the three time intervals at 40 °C, 50 °C, 60 °C and 70 °C gave three activation energy values, which are seen to correspond to the homolytic breakdown of CO–NO2 groups at the C2, C3 and C6 ring positions on NC. In a further step, the data were evaluated with extended modelling using (i) a first order description, (ii) a second order description and (iii) an nth order description. This modelling considered the data as a whole; no splitting of data in time intervals and no single temperature evaluation has been made. Some differences can be recognized between the first order and second order models. However, the results from these evaluations agree satisfactorily with each other and with quantum chemical calculations of the bond dissociation enthalpies of the CO–NO2 bonds at the three ring positions. In this way, the data could be assigned to the anhydroglucopyranose ring positions of the CO–NO2 groups. Based on all data and literature results the order of stability of the CO–NO2 groups was concluded to be C6 > C2 > C3." @default.
• W2007230069 created "2016-06-24" @default.
• W2007230069 creator A5004269147 @default.
• W2007230069 creator A5029033663 @default.
• W2007230069 creator A5043115663 @default.
• W2007230069 date "2014-04-01" @default.
• W2007230069 modified "2023-10-13" @default.
• W2007230069 title "Activation energies for the decomposition of nitrate ester groups at the anhydroglucopyranose ring positions C2, C3 and C6 of nitrocellulose using the nitration of a dye as probe" @default.
• W2007230069 cites W1585115010 @default.
• W2007230069 cites W1966447282 @default.
• W2007230069 cites W1970595045 @default.
• W2007230069 cites W1982375064 @default.
• W2007230069 cites W1984136211 @default.
• W2007230069 cites W1989887142 @default.
• W2007230069 cites W1993768613 @default.
• W2007230069 cites W1999582702 @default.
• W2007230069 cites W1999859432 @default.
• W2007230069 cites W2002129900 @default.
• W2007230069 cites W2004276058 @default.
• W2007230069 cites W2048700893 @default.
• W2007230069 cites W2049168495 @default.
• W2007230069 cites W2055783803 @default.
• W2007230069 cites W2061301804 @default.
• W2007230069 cites W2068004555 @default.
• W2007230069 cites W2074727500 @default.
• W2007230069 cites W2089187505 @default.
• W2007230069 cites W2091274367 @default.
• W2007230069 cites W2156341359 @default.
• W2007230069 cites W2165744373 @default.
• W2007230069 doi "https://doi.org/10.1016/j.polymdegradstab.2014.02.002" @default.
• W2007230069 hasPublicationYear "2014" @default.
• W2007230069 type Work @default.
• W2007230069 sameAs 2007230069 @default.
• W2007230069 citedByCount "28" @default.
• W2007230069 countsByYear W20072300692015 @default.
• W2007230069 countsByYear W20072300692016 @default.
• W2007230069 countsByYear W20072300692017 @default.
• W2007230069 countsByYear W20072300692019 @default.
• W2007230069 countsByYear W20072300692020 @default.
• W2007230069 countsByYear W20072300692021 @default.
• W2007230069 countsByYear W20072300692022 @default.
• W2007230069 countsByYear W20072300692023 @default.
• W2007230069 crossrefType "journal-article" @default.
• W2007230069 hasAuthorship W2007230069A5004269147 @default.
• W2007230069 hasAuthorship W2007230069A5029033663 @default.
• W2007230069 hasAuthorship W2007230069A5043115663 @default.
• W2007230069 hasConcept C113196181 @default.
• W2007230069 hasConcept C118820876 @default.
• W2007230069 hasConcept C119824511 @default.
• W2007230069 hasConcept C121332964 @default.
• W2007230069 hasConcept C147789679 @default.
• W2007230069 hasConcept C148898269 @default.
• W2007230069 hasConcept C160434732 @default.
• W2007230069 hasConcept C178790620 @default.
• W2007230069 hasConcept C185592680 @default.
• W2007230069 hasConcept C2775856698 @default.
• W2007230069 hasConcept C43617362 @default.
• W2007230069 hasConcept C58968531 @default.
• W2007230069 hasConcept C62520636 @default.
• W2007230069 hasConcept C75473681 @default.
• W2007230069 hasConcept C86183883 @default.
• W2007230069 hasConcept C93391505 @default.
• W2007230069 hasConcept C95121573 @default.
• W2007230069 hasConcept C98015330 @default.
• W2007230069 hasConceptScore W2007230069C113196181 @default.
• W2007230069 hasConceptScore W2007230069C118820876 @default.
• W2007230069 hasConceptScore W2007230069C119824511 @default.
• W2007230069 hasConceptScore W2007230069C121332964 @default.
• W2007230069 hasConceptScore W2007230069C147789679 @default.
• W2007230069 hasConceptScore W2007230069C148898269 @default.
• W2007230069 hasConceptScore W2007230069C160434732 @default.
• W2007230069 hasConceptScore W2007230069C178790620 @default.
• W2007230069 hasConceptScore W2007230069C185592680 @default.
• W2007230069 hasConceptScore W2007230069C2775856698 @default.
• W2007230069 hasConceptScore W2007230069C43617362 @default.
• W2007230069 hasConceptScore W2007230069C58968531 @default.
• W2007230069 hasConceptScore W2007230069C62520636 @default.
• W2007230069 hasConceptScore W2007230069C75473681 @default.
• W2007230069 hasConceptScore W2007230069C86183883 @default.
• W2007230069 hasConceptScore W2007230069C93391505 @default.
• W2007230069 hasConceptScore W2007230069C95121573 @default.
• W2007230069 hasConceptScore W2007230069C98015330 @default.
• W2007230069 hasLocation W20072300691 @default.
• W2007230069 hasOpenAccess W2007230069 @default.
• W2007230069 hasPrimaryLocation W20072300691 @default.
• W2007230069 hasRelatedWork W2030959509 @default.
• W2007230069 hasRelatedWork W2040685094 @default.
• W2007230069 hasRelatedWork W2194467782 @default.
• W2007230069 hasRelatedWork W2352453200 @default.
• W2007230069 hasRelatedWork W2366340522 @default.
• W2007230069 hasRelatedWork W2395831713 @default.
• W2007230069 hasRelatedWork W3129087222 @default.
• W2007230069 hasRelatedWork W3133584230 @default.
• W2007230069 hasRelatedWork W4318374227 @default.
• W2007230069 hasRelatedWork W4381742984 @default.
• W2007230069 hasVolume "102" @default.
• W2007230069 isParatext "false" @default.
• W2007230069 isRetracted "false" @default.

• next