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Radiation grafting of pH and thermosensitive N-isopropylacrylamide and acrylic acid onto PTFE films by two-steps process

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Title: Radiation grafting of pH and thermosensitive N-isopropylacrylamide and acrylic acid onto PTFE films by two-steps process
Authors: Bucio, E. ebucio@nucleares.unam.mx, Burillo, G.1
Source: Radiation Physics & Chemistry. Nov2007, Vol. 76 Issue 11/12, p1724-1727. 4p.
Subjects: Irradiation, Hydrogen-ion concentration, Acrylic acid, Glass, Reaction time
Abstract: Abstract: Polytetrafluoroethylene (PTFE) was grafted (g) with acrylic acid (AAc) by γ-ray pre-irradiation method to get PTFE-g-AAc films, then N-isopropylacrylamide (NIPAAm) was grafted onto PTFE-g-AAc films with γ-ray to get (PTFE-g-AAc)-g-NIPAAm. PTFE films were irradiated in air at a dose rate of 3.0kGyh–1 and different radiation dose. The irradiated films were placed in glass ampoules, which contained aqueous solutions with different monomer concentration (AAc), and then they were heated at different temperatures and reaction time. NIPAAm onto PTFE-g-AAc was carried out with the same procedure with monomer concentration of 1molL−1. The thermosensitivity of the samples was defined and calculated as the ratio of the grafted samples swelling at 28 and 35°C, and pH sensitivity defined as the ratio of the grafted samples swelling at pH 2 and 8. [Copyright &y& Elsevier]
Copyright of Radiation Physics & Chemistry is the property of Pergamon Press - An Imprint of Elsevier Science 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: 26570524
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Label: Title
  Group: Ti
  Data: Radiation grafting of pH and thermosensitive N-isopropylacrylamide and acrylic acid onto PTFE films by two-steps process
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  Label: Authors
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  Data: <searchLink fieldCode="AR" term="%22Bucio%2C+E%2E%22">Bucio, E.</searchLink><i> ebucio@nucleares.unam.mx</i><br /><searchLink fieldCode="AR" term="%22Burillo%2C+G%2E%22">Burillo, G.</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Radiation+Physics+%26+Chemistry%22">Radiation Physics & Chemistry</searchLink>. Nov2007, Vol. 76 Issue 11/12, p1724-1727. 4p.
– Name: Subject
  Label: Subjects
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  Data: <searchLink fieldCode="DE" term="%22Irradiation%22">Irradiation</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrogen-ion+concentration%22">Hydrogen-ion concentration</searchLink><br /><searchLink fieldCode="DE" term="%22Acrylic+acid%22">Acrylic acid</searchLink><br /><searchLink fieldCode="DE" term="%22Glass%22">Glass</searchLink><br /><searchLink fieldCode="DE" term="%22Reaction+time%22">Reaction time</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Abstract: Polytetrafluoroethylene (PTFE) was grafted (g) with acrylic acid (AAc) by γ-ray pre-irradiation method to get PTFE-g-AAc films, then N-isopropylacrylamide (NIPAAm) was grafted onto PTFE-g-AAc films with γ-ray to get (PTFE-g-AAc)-g-NIPAAm. PTFE films were irradiated in air at a dose rate of 3.0kGyh–1 and different radiation dose. The irradiated films were placed in glass ampoules, which contained aqueous solutions with different monomer concentration (AAc), and then they were heated at different temperatures and reaction time. NIPAAm onto PTFE-g-AAc was carried out with the same procedure with monomer concentration of 1molL−1. The thermosensitivity of the samples was defined and calculated as the ratio of the grafted samples swelling at 28 and 35°C, and pH sensitivity defined as the ratio of the grafted samples swelling at pH 2 and 8. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Radiation Physics & Chemistry is the property of Pergamon Press - An Imprint of Elsevier Science 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: 10.1016/j.radphyschem.2007.02.109
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 4
        StartPage: 1724
    Subjects:
      – SubjectFull: Irradiation
        Type: general
      – SubjectFull: Hydrogen-ion concentration
        Type: general
      – SubjectFull: Acrylic acid
        Type: general
      – SubjectFull: Glass
        Type: general
      – SubjectFull: Reaction time
        Type: general
    Titles:
      – TitleFull: Radiation grafting of pH and thermosensitive N-isopropylacrylamide and acrylic acid onto PTFE films by two-steps process
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            NameFull: Bucio, E.
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            NameFull: Burillo, G.
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            – D: 01
              M: 11
              Text: Nov2007
              Type: published
              Y: 2007
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              Value: 0969806X
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              Value: 76
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              Value: 11/12
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            – TitleFull: Radiation Physics & Chemistry
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