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Effects of aromatic diacetylenes on polyurethane degradation by gamma irradiation.

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Title: Effects of aromatic diacetylenes on polyurethane degradation by gamma irradiation.
Authors: Burillo, Guillermina1, Beristain, Miriam F.2, Sanchez, Ernesto2, Ogawa, Takeshi2 ogawa@unam.mx
Source: Polymer Degradation & Stability. Oct2013, Vol. 98 Issue 10, p1988-1992. 5p.
Subjects: Butadiyne, Aromatic compounds, Polyurethanes, Chemical decomposition, Gamma rays, Tensile strength
Abstract: Abstract: The effects of four aromatic diacetylenes on the gamma-irradiation-induced degradation of a commercial polyurethane were studied. Addition of 1 wt% of diphenylbutadiyne, which is homogeneously distributed in the polymer, effectively suppressed the polymer chain degradation. The dose required to decrease tensile strength by 50% was found to be 582 kGy for the polyurethane with 1 wt% of diphenylbutadiyne, while a dose of only 310 kGy for the polyurethane itself. The Young's modulus of the polyurethane alone decreased with dose; meanwhile the films with diphenylbutadiyne did not change. The films with p,p′-dinitrodiphenylbutadiyne behaved differently from others due to their inhomogeneous composition. The amide substituted diacetylenes also showed protecting effect, but in less extent due to the steric effect. [Copyright &y& Elsevier]
Copyright of Polymer Degradation & Stability is the property of Elsevier B.V. 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.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 90093797
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Effects of aromatic diacetylenes on polyurethane degradation by gamma irradiation.
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  Data: <searchLink fieldCode="AR" term="%22Burillo%2C+Guillermina%22">Burillo, Guillermina</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Beristain%2C+Miriam+F%2E%22">Beristain, Miriam F.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Sanchez%2C+Ernesto%22">Sanchez, Ernesto</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Ogawa%2C+Takeshi%22">Ogawa, Takeshi</searchLink><relatesTo>2</relatesTo><i> ogawa@unam.mx</i>
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  Data: <searchLink fieldCode="JN" term="%22Polymer+Degradation+%26+Stability%22">Polymer Degradation & Stability</searchLink>. Oct2013, Vol. 98 Issue 10, p1988-1992. 5p.
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  Data: <searchLink fieldCode="DE" term="%22Butadiyne%22">Butadiyne</searchLink><br /><searchLink fieldCode="DE" term="%22Aromatic+compounds%22">Aromatic compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Polyurethanes%22">Polyurethanes</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+decomposition%22">Chemical decomposition</searchLink><br /><searchLink fieldCode="DE" term="%22Gamma+rays%22">Gamma rays</searchLink><br /><searchLink fieldCode="DE" term="%22Tensile+strength%22">Tensile strength</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Abstract: The effects of four aromatic diacetylenes on the gamma-irradiation-induced degradation of a commercial polyurethane were studied. Addition of 1 wt% of diphenylbutadiyne, which is homogeneously distributed in the polymer, effectively suppressed the polymer chain degradation. The dose required to decrease tensile strength by 50% was found to be 582 kGy for the polyurethane with 1 wt% of diphenylbutadiyne, while a dose of only 310 kGy for the polyurethane itself. The Young's modulus of the polyurethane alone decreased with dose; meanwhile the films with diphenylbutadiyne did not change. The films with p,p′-dinitrodiphenylbutadiyne behaved differently from others due to their inhomogeneous composition. The amide substituted diacetylenes also showed protecting effect, but in less extent due to the steric effect. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Polymer Degradation & Stability is the property of Elsevier B.V. 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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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.polymdegradstab.2013.07.014
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 5
        StartPage: 1988
    Subjects:
      – SubjectFull: Butadiyne
        Type: general
      – SubjectFull: Aromatic compounds
        Type: general
      – SubjectFull: Polyurethanes
        Type: general
      – SubjectFull: Chemical decomposition
        Type: general
      – SubjectFull: Gamma rays
        Type: general
      – SubjectFull: Tensile strength
        Type: general
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      – TitleFull: Effects of aromatic diacetylenes on polyurethane degradation by gamma irradiation.
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            NameFull: Beristain, Miriam F.
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            NameFull: Sanchez, Ernesto
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            NameFull: Ogawa, Takeshi
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            – D: 01
              M: 10
              Text: Oct2013
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              Y: 2013
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