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Attenuated Total Reflection (ATR) Fourier Transform Infrared (FT-IR) Spectroscopy of Oxidized Polymer-Modified Bitumens.

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Title: Attenuated Total Reflection (ATR) Fourier Transform Infrared (FT-IR) Spectroscopy of Oxidized Polymer-Modified Bitumens.
Authors: Yut, Iliya1, Zofka, Adam2 ily08001@engr.uconn.edu
Source: Applied Spectroscopy. Jul2011, Vol. 65 Issue 7, p765-770. 6p.
Subjects: Bitumen, Polymers, Precipitation hardening, Asphalt, Product life cycle, Ketones, Sulfoxides, Fourier transform infrared spectroscopy
Abstract: Oxidative age hardening of bitumen results in increasing fatigue susceptibility of bituminous mixtures, thus reducing the service life of asphalt pavements. Polymer additives to bitumen have been shown to improve its viscoelastic properties and, in some cases, reduce the level of bitumen hardening. Fourier transform infrared (FT-IR) spectroscopy enables evaluation of oxidation levels in bitumen by measuring the concentration of oxygen-containing chemical functionalities. This paper summarizes the results of the investigation of oxidative age hardening of polymer-modified bitumens (PMB) caused by accelerated aging in laboratory conditions. The PMB samples are prepared with different concentrations of styrene–butadiene-based co-polymers. Next, the PMB samples are aged using standard procedures that employ air blowing at 163 °C for 85 min followed by conditioning the samples at 100 °C and 2.1 MPa pressure for 20 to 48 hours. The resultant changes in their chemical composition are evaluated by portable attenuated total reflection (ATR) spectrometer. Measurements of ketone, sulfoxide, and hydroxyl content in PMB samples indicated similar oxidation pathways to those of non-modified bitumens. In addition, no evidence of polymer degradation due to accelerated aging of PMB was found in this study. [ABSTRACT FROM AUTHOR]
Copyright of Applied Spectroscopy is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Attenuated Total Reflection (ATR) Fourier Transform Infrared (FT-IR) Spectroscopy of Oxidized Polymer-Modified Bitumens.
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  Data: <searchLink fieldCode="AR" term="%22Yut%2C+Iliya%22">Yut, Iliya</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Zofka%2C+Adam%22">Zofka, Adam</searchLink><relatesTo>2</relatesTo><i> ily08001@engr.uconn.edu</i>
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  Data: <searchLink fieldCode="JN" term="%22Applied+Spectroscopy%22">Applied Spectroscopy</searchLink>. Jul2011, Vol. 65 Issue 7, p765-770. 6p.
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  Data: <searchLink fieldCode="DE" term="%22Bitumen%22">Bitumen</searchLink><br /><searchLink fieldCode="DE" term="%22Polymers%22">Polymers</searchLink><br /><searchLink fieldCode="DE" term="%22Precipitation+hardening%22">Precipitation hardening</searchLink><br /><searchLink fieldCode="DE" term="%22Asphalt%22">Asphalt</searchLink><br /><searchLink fieldCode="DE" term="%22Product+life+cycle%22">Product life cycle</searchLink><br /><searchLink fieldCode="DE" term="%22Ketones%22">Ketones</searchLink><br /><searchLink fieldCode="DE" term="%22Sulfoxides%22">Sulfoxides</searchLink><br /><searchLink fieldCode="DE" term="%22Fourier+transform+infrared+spectroscopy%22">Fourier transform infrared spectroscopy</searchLink>
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  Label: Abstract
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  Data: Oxidative age hardening of bitumen results in increasing fatigue susceptibility of bituminous mixtures, thus reducing the service life of asphalt pavements. Polymer additives to bitumen have been shown to improve its viscoelastic properties and, in some cases, reduce the level of bitumen hardening. Fourier transform infrared (FT-IR) spectroscopy enables evaluation of oxidation levels in bitumen by measuring the concentration of oxygen-containing chemical functionalities. This paper summarizes the results of the investigation of oxidative age hardening of polymer-modified bitumens (PMB) caused by accelerated aging in laboratory conditions. The PMB samples are prepared with different concentrations of styrene–butadiene-based co-polymers. Next, the PMB samples are aged using standard procedures that employ air blowing at 163 °C for 85 min followed by conditioning the samples at 100 °C and 2.1 MPa pressure for 20 to 48 hours. The resultant changes in their chemical composition are evaluated by portable attenuated total reflection (ATR) spectrometer. Measurements of ketone, sulfoxide, and hydroxyl content in PMB samples indicated similar oxidation pathways to those of non-modified bitumens. In addition, no evidence of polymer degradation due to accelerated aging of PMB was found in this study. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Applied Spectroscopy is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1366/10-06217
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 6
        StartPage: 765
    Subjects:
      – SubjectFull: Bitumen
        Type: general
      – SubjectFull: Polymers
        Type: general
      – SubjectFull: Precipitation hardening
        Type: general
      – SubjectFull: Asphalt
        Type: general
      – SubjectFull: Product life cycle
        Type: general
      – SubjectFull: Ketones
        Type: general
      – SubjectFull: Sulfoxides
        Type: general
      – SubjectFull: Fourier transform infrared spectroscopy
        Type: general
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      – TitleFull: Attenuated Total Reflection (ATR) Fourier Transform Infrared (FT-IR) Spectroscopy of Oxidized Polymer-Modified Bitumens.
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            NameFull: Yut, Iliya
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            – D: 01
              M: 07
              Text: Jul2011
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              Y: 2011
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            – TitleFull: Applied Spectroscopy
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