Photochemical behaviour of poly(organophosphazenes). 14. Photooxidation of poly[bis(4-isopropylphenoxy) phosphazene] under accelerated conditions
Abstract The photooxidation of poly[bis(4-isopropylphenoxy)phosphazene] under accelerated conditions has been followed by FTIR and UV visible spectroscopic techniques. The main photooxidation products are acetophenone and phenol groups. In addition, acetone vapors have been detected by GC MS combine...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Scoponi, Marco [verfasserIn] |
|---|
| Format: |
Artikel |
|---|---|
| Sprache: |
Englisch |
| Erschienen: |
1996 |
|---|
| Anmerkung: |
© Plenum Publishing Corporation 1996 |
|---|
| Übergeordnetes Werk: |
Enthalten in: Journal of inorganic and organometallic polymers and materials - Kluwer Academic Publishers-Plenum Publishers, 1991, 6(1996), 4 vom: Dez., Seite 325-340 |
|---|---|
| Übergeordnetes Werk: |
volume:6 ; year:1996 ; number:4 ; month:12 ; pages:325-340 |
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| DOI / URN: |
10.1007/BF01062513 |
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| 245 | 1 | 0 | |a Photochemical behaviour of poly(organophosphazenes). 14. Photooxidation of poly[bis(4-isopropylphenoxy) phosphazene] under accelerated conditions |
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| 520 | |a Abstract The photooxidation of poly[bis(4-isopropylphenoxy)phosphazene] under accelerated conditions has been followed by FTIR and UV visible spectroscopic techniques. The main photooxidation products are acetophenone and phenol groups. In addition, acetone vapors have been detected by GC MS combined techniques concomitant with the IR spectral changes in the CH stretching region, suggesting a significant decrease in the isopropyl moieties. The presence of polymeric sequences having phenol groups under our conditions gives origin to further oxidation reactions due to electron transfer or radical recombination or to hydrogen abstraction reactions promoted by unhindered phenoxyl radicals. In addition, the absence of UV visible light, i.e., under thermooxidation reaction at 60° C has demonstrated that phenol groups are the main responsible of secondary oxidation products. The complexity of the photooxidation mechanism in the solid state for this polymer makes it difficult to determine a definitive degradation mechanism under both thermo- and photooxidative conditions. | ||
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10.1007/BF01062513 doi (DE-627)OLC2061503837 (DE-He213)BF01062513-p DE-627 ger DE-627 rakwb eng 660 VZ Scoponi, Marco verfasserin aut Photochemical behaviour of poly(organophosphazenes). 14. Photooxidation of poly[bis(4-isopropylphenoxy) phosphazene] under accelerated conditions 1996 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Plenum Publishing Corporation 1996 Abstract The photooxidation of poly[bis(4-isopropylphenoxy)phosphazene] under accelerated conditions has been followed by FTIR and UV visible spectroscopic techniques. The main photooxidation products are acetophenone and phenol groups. In addition, acetone vapors have been detected by GC MS combined techniques concomitant with the IR spectral changes in the CH stretching region, suggesting a significant decrease in the isopropyl moieties. The presence of polymeric sequences having phenol groups under our conditions gives origin to further oxidation reactions due to electron transfer or radical recombination or to hydrogen abstraction reactions promoted by unhindered phenoxyl radicals. In addition, the absence of UV visible light, i.e., under thermooxidation reaction at 60° C has demonstrated that phenol groups are the main responsible of secondary oxidation products. The complexity of the photooxidation mechanism in the solid state for this polymer makes it difficult to determine a definitive degradation mechanism under both thermo- and photooxidative conditions. Pradella, Fiorella aut Gleria, Mario aut Minto, Francesco aut Enthalten in Journal of inorganic and organometallic polymers and materials Kluwer Academic Publishers-Plenum Publishers, 1991 6(1996), 4 vom: Dez., Seite 325-340 (DE-627)130968625 (DE-600)1069621-0 (DE-576)029153867 1574-1443 nnns volume:6 year:1996 number:4 month:12 pages:325-340 https://doi.org/10.1007/BF01062513 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_40 GBV_ILN_70 AR 6 1996 4 12 325-340 |
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10.1007/BF01062513 doi (DE-627)OLC2061503837 (DE-He213)BF01062513-p DE-627 ger DE-627 rakwb eng 660 VZ Scoponi, Marco verfasserin aut Photochemical behaviour of poly(organophosphazenes). 14. Photooxidation of poly[bis(4-isopropylphenoxy) phosphazene] under accelerated conditions 1996 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Plenum Publishing Corporation 1996 Abstract The photooxidation of poly[bis(4-isopropylphenoxy)phosphazene] under accelerated conditions has been followed by FTIR and UV visible spectroscopic techniques. The main photooxidation products are acetophenone and phenol groups. In addition, acetone vapors have been detected by GC MS combined techniques concomitant with the IR spectral changes in the CH stretching region, suggesting a significant decrease in the isopropyl moieties. The presence of polymeric sequences having phenol groups under our conditions gives origin to further oxidation reactions due to electron transfer or radical recombination or to hydrogen abstraction reactions promoted by unhindered phenoxyl radicals. In addition, the absence of UV visible light, i.e., under thermooxidation reaction at 60° C has demonstrated that phenol groups are the main responsible of secondary oxidation products. The complexity of the photooxidation mechanism in the solid state for this polymer makes it difficult to determine a definitive degradation mechanism under both thermo- and photooxidative conditions. Pradella, Fiorella aut Gleria, Mario aut Minto, Francesco aut Enthalten in Journal of inorganic and organometallic polymers and materials Kluwer Academic Publishers-Plenum Publishers, 1991 6(1996), 4 vom: Dez., Seite 325-340 (DE-627)130968625 (DE-600)1069621-0 (DE-576)029153867 1574-1443 nnns volume:6 year:1996 number:4 month:12 pages:325-340 https://doi.org/10.1007/BF01062513 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_40 GBV_ILN_70 AR 6 1996 4 12 325-340 |
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10.1007/BF01062513 doi (DE-627)OLC2061503837 (DE-He213)BF01062513-p DE-627 ger DE-627 rakwb eng 660 VZ Scoponi, Marco verfasserin aut Photochemical behaviour of poly(organophosphazenes). 14. Photooxidation of poly[bis(4-isopropylphenoxy) phosphazene] under accelerated conditions 1996 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Plenum Publishing Corporation 1996 Abstract The photooxidation of poly[bis(4-isopropylphenoxy)phosphazene] under accelerated conditions has been followed by FTIR and UV visible spectroscopic techniques. The main photooxidation products are acetophenone and phenol groups. In addition, acetone vapors have been detected by GC MS combined techniques concomitant with the IR spectral changes in the CH stretching region, suggesting a significant decrease in the isopropyl moieties. The presence of polymeric sequences having phenol groups under our conditions gives origin to further oxidation reactions due to electron transfer or radical recombination or to hydrogen abstraction reactions promoted by unhindered phenoxyl radicals. In addition, the absence of UV visible light, i.e., under thermooxidation reaction at 60° C has demonstrated that phenol groups are the main responsible of secondary oxidation products. The complexity of the photooxidation mechanism in the solid state for this polymer makes it difficult to determine a definitive degradation mechanism under both thermo- and photooxidative conditions. Pradella, Fiorella aut Gleria, Mario aut Minto, Francesco aut Enthalten in Journal of inorganic and organometallic polymers and materials Kluwer Academic Publishers-Plenum Publishers, 1991 6(1996), 4 vom: Dez., Seite 325-340 (DE-627)130968625 (DE-600)1069621-0 (DE-576)029153867 1574-1443 nnns volume:6 year:1996 number:4 month:12 pages:325-340 https://doi.org/10.1007/BF01062513 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_40 GBV_ILN_70 AR 6 1996 4 12 325-340 |
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10.1007/BF01062513 doi (DE-627)OLC2061503837 (DE-He213)BF01062513-p DE-627 ger DE-627 rakwb eng 660 VZ Scoponi, Marco verfasserin aut Photochemical behaviour of poly(organophosphazenes). 14. Photooxidation of poly[bis(4-isopropylphenoxy) phosphazene] under accelerated conditions 1996 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Plenum Publishing Corporation 1996 Abstract The photooxidation of poly[bis(4-isopropylphenoxy)phosphazene] under accelerated conditions has been followed by FTIR and UV visible spectroscopic techniques. The main photooxidation products are acetophenone and phenol groups. In addition, acetone vapors have been detected by GC MS combined techniques concomitant with the IR spectral changes in the CH stretching region, suggesting a significant decrease in the isopropyl moieties. The presence of polymeric sequences having phenol groups under our conditions gives origin to further oxidation reactions due to electron transfer or radical recombination or to hydrogen abstraction reactions promoted by unhindered phenoxyl radicals. In addition, the absence of UV visible light, i.e., under thermooxidation reaction at 60° C has demonstrated that phenol groups are the main responsible of secondary oxidation products. The complexity of the photooxidation mechanism in the solid state for this polymer makes it difficult to determine a definitive degradation mechanism under both thermo- and photooxidative conditions. Pradella, Fiorella aut Gleria, Mario aut Minto, Francesco aut Enthalten in Journal of inorganic and organometallic polymers and materials Kluwer Academic Publishers-Plenum Publishers, 1991 6(1996), 4 vom: Dez., Seite 325-340 (DE-627)130968625 (DE-600)1069621-0 (DE-576)029153867 1574-1443 nnns volume:6 year:1996 number:4 month:12 pages:325-340 https://doi.org/10.1007/BF01062513 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_40 GBV_ILN_70 AR 6 1996 4 12 325-340 |
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10.1007/BF01062513 doi (DE-627)OLC2061503837 (DE-He213)BF01062513-p DE-627 ger DE-627 rakwb eng 660 VZ Scoponi, Marco verfasserin aut Photochemical behaviour of poly(organophosphazenes). 14. Photooxidation of poly[bis(4-isopropylphenoxy) phosphazene] under accelerated conditions 1996 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Plenum Publishing Corporation 1996 Abstract The photooxidation of poly[bis(4-isopropylphenoxy)phosphazene] under accelerated conditions has been followed by FTIR and UV visible spectroscopic techniques. The main photooxidation products are acetophenone and phenol groups. In addition, acetone vapors have been detected by GC MS combined techniques concomitant with the IR spectral changes in the CH stretching region, suggesting a significant decrease in the isopropyl moieties. The presence of polymeric sequences having phenol groups under our conditions gives origin to further oxidation reactions due to electron transfer or radical recombination or to hydrogen abstraction reactions promoted by unhindered phenoxyl radicals. In addition, the absence of UV visible light, i.e., under thermooxidation reaction at 60° C has demonstrated that phenol groups are the main responsible of secondary oxidation products. The complexity of the photooxidation mechanism in the solid state for this polymer makes it difficult to determine a definitive degradation mechanism under both thermo- and photooxidative conditions. Pradella, Fiorella aut Gleria, Mario aut Minto, Francesco aut Enthalten in Journal of inorganic and organometallic polymers and materials Kluwer Academic Publishers-Plenum Publishers, 1991 6(1996), 4 vom: Dez., Seite 325-340 (DE-627)130968625 (DE-600)1069621-0 (DE-576)029153867 1574-1443 nnns volume:6 year:1996 number:4 month:12 pages:325-340 https://doi.org/10.1007/BF01062513 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_40 GBV_ILN_70 AR 6 1996 4 12 325-340 |
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photochemical behaviour of poly(organophosphazenes). 14. photooxidation of poly[bis(4-isopropylphenoxy) phosphazene] under accelerated conditions |
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Photochemical behaviour of poly(organophosphazenes). 14. Photooxidation of poly[bis(4-isopropylphenoxy) phosphazene] under accelerated conditions |
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Abstract The photooxidation of poly[bis(4-isopropylphenoxy)phosphazene] under accelerated conditions has been followed by FTIR and UV visible spectroscopic techniques. The main photooxidation products are acetophenone and phenol groups. In addition, acetone vapors have been detected by GC MS combined techniques concomitant with the IR spectral changes in the CH stretching region, suggesting a significant decrease in the isopropyl moieties. The presence of polymeric sequences having phenol groups under our conditions gives origin to further oxidation reactions due to electron transfer or radical recombination or to hydrogen abstraction reactions promoted by unhindered phenoxyl radicals. In addition, the absence of UV visible light, i.e., under thermooxidation reaction at 60° C has demonstrated that phenol groups are the main responsible of secondary oxidation products. The complexity of the photooxidation mechanism in the solid state for this polymer makes it difficult to determine a definitive degradation mechanism under both thermo- and photooxidative conditions. © Plenum Publishing Corporation 1996 |
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Abstract The photooxidation of poly[bis(4-isopropylphenoxy)phosphazene] under accelerated conditions has been followed by FTIR and UV visible spectroscopic techniques. The main photooxidation products are acetophenone and phenol groups. In addition, acetone vapors have been detected by GC MS combined techniques concomitant with the IR spectral changes in the CH stretching region, suggesting a significant decrease in the isopropyl moieties. The presence of polymeric sequences having phenol groups under our conditions gives origin to further oxidation reactions due to electron transfer or radical recombination or to hydrogen abstraction reactions promoted by unhindered phenoxyl radicals. In addition, the absence of UV visible light, i.e., under thermooxidation reaction at 60° C has demonstrated that phenol groups are the main responsible of secondary oxidation products. The complexity of the photooxidation mechanism in the solid state for this polymer makes it difficult to determine a definitive degradation mechanism under both thermo- and photooxidative conditions. © Plenum Publishing Corporation 1996 |
| abstract_unstemmed |
Abstract The photooxidation of poly[bis(4-isopropylphenoxy)phosphazene] under accelerated conditions has been followed by FTIR and UV visible spectroscopic techniques. The main photooxidation products are acetophenone and phenol groups. In addition, acetone vapors have been detected by GC MS combined techniques concomitant with the IR spectral changes in the CH stretching region, suggesting a significant decrease in the isopropyl moieties. The presence of polymeric sequences having phenol groups under our conditions gives origin to further oxidation reactions due to electron transfer or radical recombination or to hydrogen abstraction reactions promoted by unhindered phenoxyl radicals. In addition, the absence of UV visible light, i.e., under thermooxidation reaction at 60° C has demonstrated that phenol groups are the main responsible of secondary oxidation products. The complexity of the photooxidation mechanism in the solid state for this polymer makes it difficult to determine a definitive degradation mechanism under both thermo- and photooxidative conditions. © Plenum Publishing Corporation 1996 |
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Photochemical behaviour of poly(organophosphazenes). 14. Photooxidation of poly[bis(4-isopropylphenoxy) phosphazene] under accelerated conditions |
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Pradella, Fiorella Gleria, Mario Minto, Francesco |
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