Characterization of Recovered Polyvinylchloride by Size Exclusion Chromatography and Triple Detectors Technique.
Saved in:
| Title: | Characterization of Recovered Polyvinylchloride by Size Exclusion Chromatography and Triple Detectors Technique. |
|---|---|
| Authors: | Hamidi, Nasrollah1 (AUTHOR) Nhamidi@scsu.edu |
| Source: | Journal of Macromolecular Science: Physics. 2020, Vol. 59 Issue 3, p137-156. 20p. 4 Charts, 6 Graphs. |
| Subjects: | Gel permeation chromatography, Chromatographic detectors, Benzyl alcohol, Polyvinyl chloride, Solvent extraction |
| Abstract: | Polyvinyl chloride (PVC) is an indispensable compound that accounts for 66% of the water distribution infrastructure and 75% of sanitary sewer pipe applications in the U.S.A. In this study PVC resin was recovered by solvent extraction from a postconsumer PVC pipe. The recovered PVC (PVC-R) was characterized by a multi-detector size exclusion chromatography system eluted with tetrahydrofuran (THF) at 30 °C. The values of the Mark-Houwink-Kuhn-Sakurada (MH) parameters of the PVC-R were obtained by averaging three replicable experiments and the results were comparable with the reported values of pure PVC. The Stockmayer-Fixman plot of the PVC-R in THF had a curved shape which is due to the notorious tendency of the PVC molecules to remain partly associated in supermolecular aggregates even if the PVC is dissolved in a good solvent. As a results, the unperturbed molecular dimension, R ¯ 0 2 / M ¯ w 1/2 , of the PVC-R was dependent on a function of the excluded volume, z, where the z2 coefficient was not zero. The obtained value of the R ¯ 0 2 / M ¯ w 1/2 of PVC-R, having a M ¯ w = 87 kDa and M ¯ w / M ¯ n = 1.41, was 8.19 × 10−9 (cgs), comparable with the reported value for pure industrial PVCs in THF, 6.4 kDa < M ¯ w < 650 kDa at 25 °C, 8.17 × 10−9 (cgs) and in benzyl alcohol, an ideal solvent, at 155.4 °C, 40 kDa < M ¯ w < 350 kDa, 8.20 × 10−9 (cgs). The comparison of the results showed that the PVC-R had similar characteristics to the industrial PVC reported in the published literature, and hence can be reused as a resin for the manufacturing of PVC commodities. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Macromolecular Science: Physics is the property of Taylor & Francis Ltd 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 |
|
Full text is not displayed to guests.
Login for full access.
|
|
| FullText | Links: – Type: pdflink Text: Availability: 1 |
|---|---|
| Header | DbId: egs DbLabel: Engineering Source An: 141801717 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: Characterization of Recovered Polyvinylchloride by Size Exclusion Chromatography and Triple Detectors Technique. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Hamidi%2C+Nasrollah%22">Hamidi, Nasrollah</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> Nhamidi@scsu.edu</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Macromolecular+Science%3A+Physics%22">Journal of Macromolecular Science: Physics</searchLink>. 2020, Vol. 59 Issue 3, p137-156. 20p. 4 Charts, 6 Graphs. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Gel+permeation+chromatography%22">Gel permeation chromatography</searchLink><br /><searchLink fieldCode="DE" term="%22Chromatographic+detectors%22">Chromatographic detectors</searchLink><br /><searchLink fieldCode="DE" term="%22Benzyl+alcohol%22">Benzyl alcohol</searchLink><br /><searchLink fieldCode="DE" term="%22Polyvinyl+chloride%22">Polyvinyl chloride</searchLink><br /><searchLink fieldCode="DE" term="%22Solvent+extraction%22">Solvent extraction</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Polyvinyl chloride (PVC) is an indispensable compound that accounts for 66% of the water distribution infrastructure and 75% of sanitary sewer pipe applications in the U.S.A. In this study PVC resin was recovered by solvent extraction from a postconsumer PVC pipe. The recovered PVC (PVC-R) was characterized by a multi-detector size exclusion chromatography system eluted with tetrahydrofuran (THF) at 30 °C. The values of the Mark-Houwink-Kuhn-Sakurada (MH) parameters of the PVC-R were obtained by averaging three replicable experiments and the results were comparable with the reported values of pure PVC. The Stockmayer-Fixman plot of the PVC-R in THF had a curved shape which is due to the notorious tendency of the PVC molecules to remain partly associated in supermolecular aggregates even if the PVC is dissolved in a good solvent. As a results, the unperturbed molecular dimension, R ¯ 0 2 / M ¯ w 1/2 , of the PVC-R was dependent on a function of the excluded volume, z, where the z2 coefficient was not zero. The obtained value of the R ¯ 0 2 / M ¯ w 1/2 of PVC-R, having a M ¯ w = 87 kDa and M ¯ w / M ¯ n = 1.41, was 8.19 × 10−9 (cgs), comparable with the reported value for pure industrial PVCs in THF, 6.4 kDa < M ¯ w < 650 kDa at 25 °C, 8.17 × 10−9 (cgs) and in benzyl alcohol, an ideal solvent, at 155.4 °C, 40 kDa < M ¯ w < 350 kDa, 8.20 × 10−9 (cgs). The comparison of the results showed that the PVC-R had similar characteristics to the industrial PVC reported in the published literature, and hence can be reused as a resin for the manufacturing of PVC commodities. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Macromolecular Science: Physics is the property of Taylor & Francis Ltd 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.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=141801717 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1080/00222348.2019.1696402 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 20 StartPage: 137 Subjects: – SubjectFull: Gel permeation chromatography Type: general – SubjectFull: Chromatographic detectors Type: general – SubjectFull: Benzyl alcohol Type: general – SubjectFull: Polyvinyl chloride Type: general – SubjectFull: Solvent extraction Type: general Titles: – TitleFull: Characterization of Recovered Polyvinylchloride by Size Exclusion Chromatography and Triple Detectors Technique. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Hamidi, Nasrollah IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 03 Text: 2020 Type: published Y: 2020 Identifiers: – Type: issn-print Value: 00222348 Numbering: – Type: volume Value: 59 – Type: issue Value: 3 Titles: – TitleFull: Journal of Macromolecular Science: Physics Type: main |
| ResultId | 1 |
