Thermosensitivity of poly(N-vinylpyrrolidone): Effect of transition-metal halides
Abstract The effect of the halides of a series of transition metals on the properties of aqueous solutions of poly(N-vinylpyrrolidone) is studied. It is shown that the introduction of $ ZnCl_{2} $ into solutions of poly(N-vinylpyrrolidone) causes phase separation with an increase in temperature. In...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Pakuro, N. I. [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2011 |
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| Schlagwörter: |
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| Anmerkung: |
© Pleiades Publishing, Ltd. 2011 |
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| Übergeordnetes Werk: |
Enthalten in: Vysokomolekuljarnye soedinenija / A i B - SP MAIK Nauka/Interperiodica, 1993, 53(2011), 1 vom: Jan., Seite 6-11 |
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| Übergeordnetes Werk: |
volume:53 ; year:2011 ; number:1 ; month:01 ; pages:6-11 |
| Links: |
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| DOI / URN: |
10.1134/S0965545X11010044 |
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OLC208658220X |
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| 520 | |a Abstract The effect of the halides of a series of transition metals on the properties of aqueous solutions of poly(N-vinylpyrrolidone) is studied. It is shown that the introduction of $ ZnCl_{2} $ into solutions of poly(N-vinylpyrrolidone) causes phase separation with an increase in temperature. In the presence of halides of other transition metals ($ CdCl_{2} $, $ CuCl_{2} $), this phenomenon is not observed. However, the addition of HCl and/or alkali-metal halides to these systems likewise gives rise to phase separation, and in the $ ZnCl_{2} $-based systems, the cloud point of solution substantially decreases with the introduction of alkali-metal salts. The same situation is observed in the case of polyvinylcaprolactam. Thus, it is concluded that the observed phenomena are associated with the formation of MtCl42− complex anions in solutions that promote the globulization of polymer chains with participation of water molecules surrounding polymer chains and cations of transition-metal salts bound to complexes with C=O groups of lactam rings of the polymers. | ||
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10.1134/S0965545X11010044 doi (DE-627)OLC208658220X (DE-He213)S0965545X11010044-p DE-627 ger DE-627 rakwb eng 540 530 VZ Pakuro, N. I. verfasserin aut Thermosensitivity of poly(N-vinylpyrrolidone): Effect of transition-metal halides 2011 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Pleiades Publishing, Ltd. 2011 Abstract The effect of the halides of a series of transition metals on the properties of aqueous solutions of poly(N-vinylpyrrolidone) is studied. It is shown that the introduction of $ ZnCl_{2} $ into solutions of poly(N-vinylpyrrolidone) causes phase separation with an increase in temperature. In the presence of halides of other transition metals ($ CdCl_{2} $, $ CuCl_{2} $), this phenomenon is not observed. However, the addition of HCl and/or alkali-metal halides to these systems likewise gives rise to phase separation, and in the $ ZnCl_{2} $-based systems, the cloud point of solution substantially decreases with the introduction of alkali-metal salts. The same situation is observed in the case of polyvinylcaprolactam. Thus, it is concluded that the observed phenomena are associated with the formation of MtCl42− complex anions in solutions that promote the globulization of polymer chains with participation of water molecules surrounding polymer chains and cations of transition-metal salts bound to complexes with C=O groups of lactam rings of the polymers. Cloud Point Polymer Science Series Complex Anion Alkali Metal Salt Alkali Metal Halide Nakhmanovich, B. I. aut Pergushov, D. V. aut Chibirova, F. Kh. aut Enthalten in Vysokomolekuljarnye soedinenija / A i B SP MAIK Nauka/Interperiodica, 1993 53(2011), 1 vom: Jan., Seite 6-11 (DE-627)131210092 (DE-600)1155389-3 (DE-576)038486814 0507-5483 nnns volume:53 year:2011 number:1 month:01 pages:6-11 https://doi.org/10.1134/S0965545X11010044 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY SSG-OLC-CHE GBV_ILN_70 AR 53 2011 1 01 6-11 |
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10.1134/S0965545X11010044 doi (DE-627)OLC208658220X (DE-He213)S0965545X11010044-p DE-627 ger DE-627 rakwb eng 540 530 VZ Pakuro, N. I. verfasserin aut Thermosensitivity of poly(N-vinylpyrrolidone): Effect of transition-metal halides 2011 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Pleiades Publishing, Ltd. 2011 Abstract The effect of the halides of a series of transition metals on the properties of aqueous solutions of poly(N-vinylpyrrolidone) is studied. It is shown that the introduction of $ ZnCl_{2} $ into solutions of poly(N-vinylpyrrolidone) causes phase separation with an increase in temperature. In the presence of halides of other transition metals ($ CdCl_{2} $, $ CuCl_{2} $), this phenomenon is not observed. However, the addition of HCl and/or alkali-metal halides to these systems likewise gives rise to phase separation, and in the $ ZnCl_{2} $-based systems, the cloud point of solution substantially decreases with the introduction of alkali-metal salts. The same situation is observed in the case of polyvinylcaprolactam. Thus, it is concluded that the observed phenomena are associated with the formation of MtCl42− complex anions in solutions that promote the globulization of polymer chains with participation of water molecules surrounding polymer chains and cations of transition-metal salts bound to complexes with C=O groups of lactam rings of the polymers. Cloud Point Polymer Science Series Complex Anion Alkali Metal Salt Alkali Metal Halide Nakhmanovich, B. I. aut Pergushov, D. V. aut Chibirova, F. Kh. aut Enthalten in Vysokomolekuljarnye soedinenija / A i B SP MAIK Nauka/Interperiodica, 1993 53(2011), 1 vom: Jan., Seite 6-11 (DE-627)131210092 (DE-600)1155389-3 (DE-576)038486814 0507-5483 nnns volume:53 year:2011 number:1 month:01 pages:6-11 https://doi.org/10.1134/S0965545X11010044 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY SSG-OLC-CHE GBV_ILN_70 AR 53 2011 1 01 6-11 |
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10.1134/S0965545X11010044 doi (DE-627)OLC208658220X (DE-He213)S0965545X11010044-p DE-627 ger DE-627 rakwb eng 540 530 VZ Pakuro, N. I. verfasserin aut Thermosensitivity of poly(N-vinylpyrrolidone): Effect of transition-metal halides 2011 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Pleiades Publishing, Ltd. 2011 Abstract The effect of the halides of a series of transition metals on the properties of aqueous solutions of poly(N-vinylpyrrolidone) is studied. It is shown that the introduction of $ ZnCl_{2} $ into solutions of poly(N-vinylpyrrolidone) causes phase separation with an increase in temperature. In the presence of halides of other transition metals ($ CdCl_{2} $, $ CuCl_{2} $), this phenomenon is not observed. However, the addition of HCl and/or alkali-metal halides to these systems likewise gives rise to phase separation, and in the $ ZnCl_{2} $-based systems, the cloud point of solution substantially decreases with the introduction of alkali-metal salts. The same situation is observed in the case of polyvinylcaprolactam. Thus, it is concluded that the observed phenomena are associated with the formation of MtCl42− complex anions in solutions that promote the globulization of polymer chains with participation of water molecules surrounding polymer chains and cations of transition-metal salts bound to complexes with C=O groups of lactam rings of the polymers. Cloud Point Polymer Science Series Complex Anion Alkali Metal Salt Alkali Metal Halide Nakhmanovich, B. I. aut Pergushov, D. V. aut Chibirova, F. Kh. aut Enthalten in Vysokomolekuljarnye soedinenija / A i B SP MAIK Nauka/Interperiodica, 1993 53(2011), 1 vom: Jan., Seite 6-11 (DE-627)131210092 (DE-600)1155389-3 (DE-576)038486814 0507-5483 nnns volume:53 year:2011 number:1 month:01 pages:6-11 https://doi.org/10.1134/S0965545X11010044 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY SSG-OLC-CHE GBV_ILN_70 AR 53 2011 1 01 6-11 |
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10.1134/S0965545X11010044 doi (DE-627)OLC208658220X (DE-He213)S0965545X11010044-p DE-627 ger DE-627 rakwb eng 540 530 VZ Pakuro, N. I. verfasserin aut Thermosensitivity of poly(N-vinylpyrrolidone): Effect of transition-metal halides 2011 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Pleiades Publishing, Ltd. 2011 Abstract The effect of the halides of a series of transition metals on the properties of aqueous solutions of poly(N-vinylpyrrolidone) is studied. It is shown that the introduction of $ ZnCl_{2} $ into solutions of poly(N-vinylpyrrolidone) causes phase separation with an increase in temperature. In the presence of halides of other transition metals ($ CdCl_{2} $, $ CuCl_{2} $), this phenomenon is not observed. However, the addition of HCl and/or alkali-metal halides to these systems likewise gives rise to phase separation, and in the $ ZnCl_{2} $-based systems, the cloud point of solution substantially decreases with the introduction of alkali-metal salts. The same situation is observed in the case of polyvinylcaprolactam. Thus, it is concluded that the observed phenomena are associated with the formation of MtCl42− complex anions in solutions that promote the globulization of polymer chains with participation of water molecules surrounding polymer chains and cations of transition-metal salts bound to complexes with C=O groups of lactam rings of the polymers. Cloud Point Polymer Science Series Complex Anion Alkali Metal Salt Alkali Metal Halide Nakhmanovich, B. I. aut Pergushov, D. V. aut Chibirova, F. Kh. aut Enthalten in Vysokomolekuljarnye soedinenija / A i B SP MAIK Nauka/Interperiodica, 1993 53(2011), 1 vom: Jan., Seite 6-11 (DE-627)131210092 (DE-600)1155389-3 (DE-576)038486814 0507-5483 nnns volume:53 year:2011 number:1 month:01 pages:6-11 https://doi.org/10.1134/S0965545X11010044 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY SSG-OLC-CHE GBV_ILN_70 AR 53 2011 1 01 6-11 |
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10.1134/S0965545X11010044 doi (DE-627)OLC208658220X (DE-He213)S0965545X11010044-p DE-627 ger DE-627 rakwb eng 540 530 VZ Pakuro, N. I. verfasserin aut Thermosensitivity of poly(N-vinylpyrrolidone): Effect of transition-metal halides 2011 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Pleiades Publishing, Ltd. 2011 Abstract The effect of the halides of a series of transition metals on the properties of aqueous solutions of poly(N-vinylpyrrolidone) is studied. It is shown that the introduction of $ ZnCl_{2} $ into solutions of poly(N-vinylpyrrolidone) causes phase separation with an increase in temperature. In the presence of halides of other transition metals ($ CdCl_{2} $, $ CuCl_{2} $), this phenomenon is not observed. However, the addition of HCl and/or alkali-metal halides to these systems likewise gives rise to phase separation, and in the $ ZnCl_{2} $-based systems, the cloud point of solution substantially decreases with the introduction of alkali-metal salts. The same situation is observed in the case of polyvinylcaprolactam. Thus, it is concluded that the observed phenomena are associated with the formation of MtCl42− complex anions in solutions that promote the globulization of polymer chains with participation of water molecules surrounding polymer chains and cations of transition-metal salts bound to complexes with C=O groups of lactam rings of the polymers. Cloud Point Polymer Science Series Complex Anion Alkali Metal Salt Alkali Metal Halide Nakhmanovich, B. I. aut Pergushov, D. V. aut Chibirova, F. Kh. aut Enthalten in Vysokomolekuljarnye soedinenija / A i B SP MAIK Nauka/Interperiodica, 1993 53(2011), 1 vom: Jan., Seite 6-11 (DE-627)131210092 (DE-600)1155389-3 (DE-576)038486814 0507-5483 nnns volume:53 year:2011 number:1 month:01 pages:6-11 https://doi.org/10.1134/S0965545X11010044 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY SSG-OLC-CHE GBV_ILN_70 AR 53 2011 1 01 6-11 |
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Thermosensitivity of poly(N-vinylpyrrolidone): Effect of transition-metal halides |
| abstract |
Abstract The effect of the halides of a series of transition metals on the properties of aqueous solutions of poly(N-vinylpyrrolidone) is studied. It is shown that the introduction of $ ZnCl_{2} $ into solutions of poly(N-vinylpyrrolidone) causes phase separation with an increase in temperature. In the presence of halides of other transition metals ($ CdCl_{2} $, $ CuCl_{2} $), this phenomenon is not observed. However, the addition of HCl and/or alkali-metal halides to these systems likewise gives rise to phase separation, and in the $ ZnCl_{2} $-based systems, the cloud point of solution substantially decreases with the introduction of alkali-metal salts. The same situation is observed in the case of polyvinylcaprolactam. Thus, it is concluded that the observed phenomena are associated with the formation of MtCl42− complex anions in solutions that promote the globulization of polymer chains with participation of water molecules surrounding polymer chains and cations of transition-metal salts bound to complexes with C=O groups of lactam rings of the polymers. © Pleiades Publishing, Ltd. 2011 |
| abstractGer |
Abstract The effect of the halides of a series of transition metals on the properties of aqueous solutions of poly(N-vinylpyrrolidone) is studied. It is shown that the introduction of $ ZnCl_{2} $ into solutions of poly(N-vinylpyrrolidone) causes phase separation with an increase in temperature. In the presence of halides of other transition metals ($ CdCl_{2} $, $ CuCl_{2} $), this phenomenon is not observed. However, the addition of HCl and/or alkali-metal halides to these systems likewise gives rise to phase separation, and in the $ ZnCl_{2} $-based systems, the cloud point of solution substantially decreases with the introduction of alkali-metal salts. The same situation is observed in the case of polyvinylcaprolactam. Thus, it is concluded that the observed phenomena are associated with the formation of MtCl42− complex anions in solutions that promote the globulization of polymer chains with participation of water molecules surrounding polymer chains and cations of transition-metal salts bound to complexes with C=O groups of lactam rings of the polymers. © Pleiades Publishing, Ltd. 2011 |
| abstract_unstemmed |
Abstract The effect of the halides of a series of transition metals on the properties of aqueous solutions of poly(N-vinylpyrrolidone) is studied. It is shown that the introduction of $ ZnCl_{2} $ into solutions of poly(N-vinylpyrrolidone) causes phase separation with an increase in temperature. In the presence of halides of other transition metals ($ CdCl_{2} $, $ CuCl_{2} $), this phenomenon is not observed. However, the addition of HCl and/or alkali-metal halides to these systems likewise gives rise to phase separation, and in the $ ZnCl_{2} $-based systems, the cloud point of solution substantially decreases with the introduction of alkali-metal salts. The same situation is observed in the case of polyvinylcaprolactam. Thus, it is concluded that the observed phenomena are associated with the formation of MtCl42− complex anions in solutions that promote the globulization of polymer chains with participation of water molecules surrounding polymer chains and cations of transition-metal salts bound to complexes with C=O groups of lactam rings of the polymers. © Pleiades Publishing, Ltd. 2011 |
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Thermosensitivity of poly(N-vinylpyrrolidone): Effect of transition-metal halides |
| url |
https://doi.org/10.1134/S0965545X11010044 |
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| author2 |
Nakhmanovich, B. I. Pergushov, D. V. Chibirova, F. Kh |
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Nakhmanovich, B. I. Pergushov, D. V. Chibirova, F. Kh |
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| doi_str |
10.1134/S0965545X11010044 |
| up_date |
2024-07-04T10:52:53.793Z |
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