The Crosslinking of Ethylene-Vinyl Acetate Copolymers with Sodium Alcoholates
When reacting ethylene-vinyl acetate copolymers (EVA) with sodium alcoholates in alcohol, the alcoholysis of EVA is accompanied by crosslinking reactions. Crosslinking can be detected by the increase in torque in a plastograph. This paper reports on investigations on the mechanism of the crosslinkin...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Ratzsch, Manfred [verfasserIn] Hofmann, Ullrich [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2011 |
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| Übergeordnetes Werk: |
Enthalten in: Journal of macromolecular science / A - Philadelphia, Pa. : Taylor & Francis, 1967, 28(1991), 2 vom: 01. Feb., Seite 145-157 |
|---|---|
| Übergeordnetes Werk: |
number:2 ; volume:28 ; year:1991 ; month:02 ; day:01 ; pages:145-157 |
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10.1080/00222339108052092 |
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| 520 | |a When reacting ethylene-vinyl acetate copolymers (EVA) with sodium alcoholates in alcohol, the alcoholysis of EVA is accompanied by crosslinking reactions. Crosslinking can be detected by the increase in torque in a plastograph. This paper reports on investigations on the mechanism of the crosslinking reaction. Both crosslinking via C=C bonds and formation of a thermally reversible network via polymer alcoholate structures can be found. If an ethylene-vinyl alcohol copolymer is obtained by complete saponification of EVA, however, only thermally reversible crosslinking can be demonstrated. This leads to the conclusion that irreversible crosslinking is established through a reaction of the acetate side chains. The reaction products of the low-molecular weight model substances, pentanol-3-acetate and sodium isopropylate in isopropanol, are analyzed by means of gas chromatography. These results suggest a partial Claisen condensation as a mechanism of the irreversible crosslinking process. | ||
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10.1080/00222339108052092 doi (DE-627)NLEJ253505852 (TFO)758184317 DE-627 ger DE-627 rda eng Ratzsch, Manfred verfasserin aut The Crosslinking of Ethylene-Vinyl Acetate Copolymers with Sodium Alcoholates 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier When reacting ethylene-vinyl acetate copolymers (EVA) with sodium alcoholates in alcohol, the alcoholysis of EVA is accompanied by crosslinking reactions. Crosslinking can be detected by the increase in torque in a plastograph. This paper reports on investigations on the mechanism of the crosslinking reaction. Both crosslinking via C=C bonds and formation of a thermally reversible network via polymer alcoholate structures can be found. If an ethylene-vinyl alcohol copolymer is obtained by complete saponification of EVA, however, only thermally reversible crosslinking can be demonstrated. This leads to the conclusion that irreversible crosslinking is established through a reaction of the acetate side chains. The reaction products of the low-molecular weight model substances, pentanol-3-acetate and sodium isopropylate in isopropanol, are analyzed by means of gas chromatography. These results suggest a partial Claisen condensation as a mechanism of the irreversible crosslinking process. Hofmann, Ullrich verfasserin aut Enthalten in Journal of macromolecular science / A Philadelphia, Pa. : Taylor & Francis, 1967 28(1991), 2 vom: 01. Feb., Seite 145-157 Online-Ressource (DE-627)NLEJ253482909 (DE-600)2027384-8 (DE-576)263253791 1520-5738 nnns number:2 volume:28 year:1991 month:02 day:01 pages:145-157 https://www.tib.eu/de/suchen/id/tandf%3A474c3e6e54e04b11c7424fd043e474d59d52c964 Digitalisierung Deutschlandweit zugänglich ZDB-1-TFO GBV_NL_ARTICLE AR 2 28 1991 2 01 145-157 |
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10.1080/00222339108052092 doi (DE-627)NLEJ253505852 (TFO)758184317 DE-627 ger DE-627 rda eng Ratzsch, Manfred verfasserin aut The Crosslinking of Ethylene-Vinyl Acetate Copolymers with Sodium Alcoholates 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier When reacting ethylene-vinyl acetate copolymers (EVA) with sodium alcoholates in alcohol, the alcoholysis of EVA is accompanied by crosslinking reactions. Crosslinking can be detected by the increase in torque in a plastograph. This paper reports on investigations on the mechanism of the crosslinking reaction. Both crosslinking via C=C bonds and formation of a thermally reversible network via polymer alcoholate structures can be found. If an ethylene-vinyl alcohol copolymer is obtained by complete saponification of EVA, however, only thermally reversible crosslinking can be demonstrated. This leads to the conclusion that irreversible crosslinking is established through a reaction of the acetate side chains. The reaction products of the low-molecular weight model substances, pentanol-3-acetate and sodium isopropylate in isopropanol, are analyzed by means of gas chromatography. These results suggest a partial Claisen condensation as a mechanism of the irreversible crosslinking process. Hofmann, Ullrich verfasserin aut Enthalten in Journal of macromolecular science / A Philadelphia, Pa. : Taylor & Francis, 1967 28(1991), 2 vom: 01. Feb., Seite 145-157 Online-Ressource (DE-627)NLEJ253482909 (DE-600)2027384-8 (DE-576)263253791 1520-5738 nnns number:2 volume:28 year:1991 month:02 day:01 pages:145-157 https://www.tib.eu/de/suchen/id/tandf%3A474c3e6e54e04b11c7424fd043e474d59d52c964 Digitalisierung Deutschlandweit zugänglich ZDB-1-TFO GBV_NL_ARTICLE AR 2 28 1991 2 01 145-157 |
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10.1080/00222339108052092 doi (DE-627)NLEJ253505852 (TFO)758184317 DE-627 ger DE-627 rda eng Ratzsch, Manfred verfasserin aut The Crosslinking of Ethylene-Vinyl Acetate Copolymers with Sodium Alcoholates 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier When reacting ethylene-vinyl acetate copolymers (EVA) with sodium alcoholates in alcohol, the alcoholysis of EVA is accompanied by crosslinking reactions. Crosslinking can be detected by the increase in torque in a plastograph. This paper reports on investigations on the mechanism of the crosslinking reaction. Both crosslinking via C=C bonds and formation of a thermally reversible network via polymer alcoholate structures can be found. If an ethylene-vinyl alcohol copolymer is obtained by complete saponification of EVA, however, only thermally reversible crosslinking can be demonstrated. This leads to the conclusion that irreversible crosslinking is established through a reaction of the acetate side chains. The reaction products of the low-molecular weight model substances, pentanol-3-acetate and sodium isopropylate in isopropanol, are analyzed by means of gas chromatography. These results suggest a partial Claisen condensation as a mechanism of the irreversible crosslinking process. Hofmann, Ullrich verfasserin aut Enthalten in Journal of macromolecular science / A Philadelphia, Pa. : Taylor & Francis, 1967 28(1991), 2 vom: 01. Feb., Seite 145-157 Online-Ressource (DE-627)NLEJ253482909 (DE-600)2027384-8 (DE-576)263253791 1520-5738 nnns number:2 volume:28 year:1991 month:02 day:01 pages:145-157 https://www.tib.eu/de/suchen/id/tandf%3A474c3e6e54e04b11c7424fd043e474d59d52c964 Digitalisierung Deutschlandweit zugänglich ZDB-1-TFO GBV_NL_ARTICLE AR 2 28 1991 2 01 145-157 |
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10.1080/00222339108052092 doi (DE-627)NLEJ253505852 (TFO)758184317 DE-627 ger DE-627 rda eng Ratzsch, Manfred verfasserin aut The Crosslinking of Ethylene-Vinyl Acetate Copolymers with Sodium Alcoholates 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier When reacting ethylene-vinyl acetate copolymers (EVA) with sodium alcoholates in alcohol, the alcoholysis of EVA is accompanied by crosslinking reactions. Crosslinking can be detected by the increase in torque in a plastograph. This paper reports on investigations on the mechanism of the crosslinking reaction. Both crosslinking via C=C bonds and formation of a thermally reversible network via polymer alcoholate structures can be found. If an ethylene-vinyl alcohol copolymer is obtained by complete saponification of EVA, however, only thermally reversible crosslinking can be demonstrated. This leads to the conclusion that irreversible crosslinking is established through a reaction of the acetate side chains. The reaction products of the low-molecular weight model substances, pentanol-3-acetate and sodium isopropylate in isopropanol, are analyzed by means of gas chromatography. These results suggest a partial Claisen condensation as a mechanism of the irreversible crosslinking process. Hofmann, Ullrich verfasserin aut Enthalten in Journal of macromolecular science / A Philadelphia, Pa. : Taylor & Francis, 1967 28(1991), 2 vom: 01. Feb., Seite 145-157 Online-Ressource (DE-627)NLEJ253482909 (DE-600)2027384-8 (DE-576)263253791 1520-5738 nnns number:2 volume:28 year:1991 month:02 day:01 pages:145-157 https://www.tib.eu/de/suchen/id/tandf%3A474c3e6e54e04b11c7424fd043e474d59d52c964 Digitalisierung Deutschlandweit zugänglich ZDB-1-TFO GBV_NL_ARTICLE AR 2 28 1991 2 01 145-157 |
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10.1080/00222339108052092 doi (DE-627)NLEJ253505852 (TFO)758184317 DE-627 ger DE-627 rda eng Ratzsch, Manfred verfasserin aut The Crosslinking of Ethylene-Vinyl Acetate Copolymers with Sodium Alcoholates 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier When reacting ethylene-vinyl acetate copolymers (EVA) with sodium alcoholates in alcohol, the alcoholysis of EVA is accompanied by crosslinking reactions. Crosslinking can be detected by the increase in torque in a plastograph. This paper reports on investigations on the mechanism of the crosslinking reaction. Both crosslinking via C=C bonds and formation of a thermally reversible network via polymer alcoholate structures can be found. If an ethylene-vinyl alcohol copolymer is obtained by complete saponification of EVA, however, only thermally reversible crosslinking can be demonstrated. This leads to the conclusion that irreversible crosslinking is established through a reaction of the acetate side chains. The reaction products of the low-molecular weight model substances, pentanol-3-acetate and sodium isopropylate in isopropanol, are analyzed by means of gas chromatography. These results suggest a partial Claisen condensation as a mechanism of the irreversible crosslinking process. Hofmann, Ullrich verfasserin aut Enthalten in Journal of macromolecular science / A Philadelphia, Pa. : Taylor & Francis, 1967 28(1991), 2 vom: 01. Feb., Seite 145-157 Online-Ressource (DE-627)NLEJ253482909 (DE-600)2027384-8 (DE-576)263253791 1520-5738 nnns number:2 volume:28 year:1991 month:02 day:01 pages:145-157 https://www.tib.eu/de/suchen/id/tandf%3A474c3e6e54e04b11c7424fd043e474d59d52c964 Digitalisierung Deutschlandweit zugänglich ZDB-1-TFO GBV_NL_ARTICLE AR 2 28 1991 2 01 145-157 |
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The Crosslinking of Ethylene-Vinyl Acetate Copolymers with Sodium Alcoholates |
| abstract |
When reacting ethylene-vinyl acetate copolymers (EVA) with sodium alcoholates in alcohol, the alcoholysis of EVA is accompanied by crosslinking reactions. Crosslinking can be detected by the increase in torque in a plastograph. This paper reports on investigations on the mechanism of the crosslinking reaction. Both crosslinking via C=C bonds and formation of a thermally reversible network via polymer alcoholate structures can be found. If an ethylene-vinyl alcohol copolymer is obtained by complete saponification of EVA, however, only thermally reversible crosslinking can be demonstrated. This leads to the conclusion that irreversible crosslinking is established through a reaction of the acetate side chains. The reaction products of the low-molecular weight model substances, pentanol-3-acetate and sodium isopropylate in isopropanol, are analyzed by means of gas chromatography. These results suggest a partial Claisen condensation as a mechanism of the irreversible crosslinking process. |
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When reacting ethylene-vinyl acetate copolymers (EVA) with sodium alcoholates in alcohol, the alcoholysis of EVA is accompanied by crosslinking reactions. Crosslinking can be detected by the increase in torque in a plastograph. This paper reports on investigations on the mechanism of the crosslinking reaction. Both crosslinking via C=C bonds and formation of a thermally reversible network via polymer alcoholate structures can be found. If an ethylene-vinyl alcohol copolymer is obtained by complete saponification of EVA, however, only thermally reversible crosslinking can be demonstrated. This leads to the conclusion that irreversible crosslinking is established through a reaction of the acetate side chains. The reaction products of the low-molecular weight model substances, pentanol-3-acetate and sodium isopropylate in isopropanol, are analyzed by means of gas chromatography. These results suggest a partial Claisen condensation as a mechanism of the irreversible crosslinking process. |
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When reacting ethylene-vinyl acetate copolymers (EVA) with sodium alcoholates in alcohol, the alcoholysis of EVA is accompanied by crosslinking reactions. Crosslinking can be detected by the increase in torque in a plastograph. This paper reports on investigations on the mechanism of the crosslinking reaction. Both crosslinking via C=C bonds and formation of a thermally reversible network via polymer alcoholate structures can be found. If an ethylene-vinyl alcohol copolymer is obtained by complete saponification of EVA, however, only thermally reversible crosslinking can be demonstrated. This leads to the conclusion that irreversible crosslinking is established through a reaction of the acetate side chains. The reaction products of the low-molecular weight model substances, pentanol-3-acetate and sodium isopropylate in isopropanol, are analyzed by means of gas chromatography. These results suggest a partial Claisen condensation as a mechanism of the irreversible crosslinking process. |
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<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000naa a22002652 4500</leader><controlfield tag="001">NLEJ253505852</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20231206145601.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">231206s2011 xx |||||o 00| ||eng c</controlfield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.1080/00222339108052092</subfield><subfield code="2">doi</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)NLEJ253505852</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(TFO)758184317</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rda</subfield></datafield><datafield tag="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">Ratzsch, Manfred</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">The Crosslinking of Ethylene-Vinyl Acetate Copolymers with Sodium Alcoholates</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2011</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">Text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">Computermedien</subfield><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">When reacting ethylene-vinyl acetate copolymers (EVA) with sodium alcoholates in alcohol, the alcoholysis of EVA is accompanied by crosslinking reactions. Crosslinking can be detected by the increase in torque in a plastograph. This paper reports on investigations on the mechanism of the crosslinking reaction. Both crosslinking via C=C bonds and formation of a thermally reversible network via polymer alcoholate structures can be found. If an ethylene-vinyl alcohol copolymer is obtained by complete saponification of EVA, however, only thermally reversible crosslinking can be demonstrated. This leads to the conclusion that irreversible crosslinking is established through a reaction of the acetate side chains. The reaction products of the low-molecular weight model substances, pentanol-3-acetate and sodium isopropylate in isopropanol, are analyzed by means of gas chromatography. These results suggest a partial Claisen condensation as a mechanism of the irreversible crosslinking process.</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Hofmann, Ullrich</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Enthalten in</subfield><subfield code="t">Journal of macromolecular science / A</subfield><subfield code="d">Philadelphia, Pa. : Taylor & Francis, 1967</subfield><subfield code="g">28(1991), 2 vom: 01. Feb., Seite 145-157</subfield><subfield code="h">Online-Ressource</subfield><subfield code="w">(DE-627)NLEJ253482909</subfield><subfield code="w">(DE-600)2027384-8</subfield><subfield code="w">(DE-576)263253791</subfield><subfield code="x">1520-5738</subfield><subfield code="7">nnns</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">number:2</subfield><subfield code="g">volume:28</subfield><subfield code="g">year:1991</subfield><subfield code="g">month:02</subfield><subfield code="g">day:01</subfield><subfield code="g">pages:145-157</subfield></datafield><datafield tag="856" ind1="4" ind2="0"><subfield code="u">https://www.tib.eu/de/suchen/id/tandf%3A474c3e6e54e04b11c7424fd043e474d59d52c964</subfield><subfield code="x">Digitalisierung</subfield><subfield code="z">Deutschlandweit zugänglich</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">ZDB-1-TFO</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_NL_ARTICLE</subfield></datafield><datafield tag="951" ind1=" " ind2=" "><subfield code="a">AR</subfield></datafield><datafield tag="952" ind1=" " ind2=" "><subfield code="e">2</subfield><subfield code="d">28</subfield><subfield code="j">1991</subfield><subfield code="c">2</subfield><subfield code="b">01</subfield><subfield code="h">145-157</subfield></datafield></record></collection>
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