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A degradation study of isotactic virgin and recycled polypropylene used in lead acid battery casings

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Title: A degradation study of isotactic virgin and recycled polypropylene used in lead acid battery casings
Authors: Rust, N.1, Ferg, E.E.1 eferg@nmmu.ac.za, Masalova, I.2
Source: Polymer Testing. Feb2006, Vol. 25 Issue 1, p130-139. 10p.
Subjects: Polypropylene, Environmental degradation, Electric batteries, Waste recycling, Manufacturing processes
Abstract: Abstract: Polypropylene has become a great concern with regards to environmental pollution since it is generally resistant to normal conditions of degradation. This factor has encouraged the industry to find ways to regenerate spent polypropylene. A good example of such a process is the recycling of lead acid batteries. The use of recycled polypropylene has cost saving implications, but does have a disadvantage in that the material starts to deteriorate after multiple processes. The comparative study investigated the use of various ratios of virgin and different grades of recycled PP in the manufacturing of lead acid battery cases and their influence on its physical and chemical properties. The degradation of PP was also investigated as the material was subjected to multiple manufacturing processes where the influence of stabilizers was considered. A common technique used for the analysis of PP, MFI was shown to be an effective technique to maintain a good quality control system within the battery case manufacturing process. The study further showed that it is important to maintain a compatible grade of PP for both the battery case and lid in order to allow for effective heat sealing of the two components. [Copyright &y& Elsevier]
Copyright of Polymer Testing 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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PubType: Academic Journal
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  Data: A degradation study of isotactic virgin and recycled polypropylene used in lead acid battery casings
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  Data: <searchLink fieldCode="AR" term="%22Rust%2C+N%2E%22">Rust, N.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Ferg%2C+E%2EE%2E%22">Ferg, E.E.</searchLink><relatesTo>1</relatesTo><i> eferg@nmmu.ac.za</i><br /><searchLink fieldCode="AR" term="%22Masalova%2C+I%2E%22">Masalova, I.</searchLink><relatesTo>2</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Polymer+Testing%22">Polymer Testing</searchLink>. Feb2006, Vol. 25 Issue 1, p130-139. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Polypropylene%22">Polypropylene</searchLink><br /><searchLink fieldCode="DE" term="%22Environmental+degradation%22">Environmental degradation</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+batteries%22">Electric batteries</searchLink><br /><searchLink fieldCode="DE" term="%22Waste+recycling%22">Waste recycling</searchLink><br /><searchLink fieldCode="DE" term="%22Manufacturing+processes%22">Manufacturing processes</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Abstract: Polypropylene has become a great concern with regards to environmental pollution since it is generally resistant to normal conditions of degradation. This factor has encouraged the industry to find ways to regenerate spent polypropylene. A good example of such a process is the recycling of lead acid batteries. The use of recycled polypropylene has cost saving implications, but does have a disadvantage in that the material starts to deteriorate after multiple processes. The comparative study investigated the use of various ratios of virgin and different grades of recycled PP in the manufacturing of lead acid battery cases and their influence on its physical and chemical properties. The degradation of PP was also investigated as the material was subjected to multiple manufacturing processes where the influence of stabilizers was considered. A common technique used for the analysis of PP, MFI was shown to be an effective technique to maintain a good quality control system within the battery case manufacturing process. The study further showed that it is important to maintain a compatible grade of PP for both the battery case and lid in order to allow for effective heat sealing of the two components. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Polymer Testing 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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        Value: 10.1016/j.polymertesting.2005.08.009
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      – Code: eng
        Text: English
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        Type: general
      – SubjectFull: Environmental degradation
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      – SubjectFull: Electric batteries
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      – SubjectFull: Waste recycling
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      – SubjectFull: Manufacturing processes
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      – TitleFull: A degradation study of isotactic virgin and recycled polypropylene used in lead acid battery casings
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              Text: Feb2006
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              Y: 2006
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