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Thermally stimulated oxidative degradation of high impact polystyrene with nitric acid
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| Zeitschriftentitel: | Polymer Engineering & Science |
|---|---|
| Personen und Körperschaften: | , , |
| In: | Polymer Engineering & Science, 36, 1996, 8, S. 1140-1151 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
Wiley
|
| Schlagwörter: |
| author_facet |
Hace, Drago Kovacevic, Vera Pajc‐Liplin, Davorka Hace, Drago Kovacevic, Vera Pajc‐Liplin, Davorka |
|---|---|
| author |
Hace, Drago Kovacevic, Vera Pajc‐Liplin, Davorka |
| spellingShingle |
Hace, Drago Kovacevic, Vera Pajc‐Liplin, Davorka Polymer Engineering & Science Thermally stimulated oxidative degradation of high impact polystyrene with nitric acid Materials Chemistry Polymers and Plastics General Chemistry Materials Chemistry Polymers and Plastics General Chemistry |
| author_sort |
hace, drago |
| spelling |
Hace, Drago Kovacevic, Vera Pajc‐Liplin, Davorka 0032-3888 1548-2634 Wiley Materials Chemistry Polymers and Plastics General Chemistry Materials Chemistry Polymers and Plastics General Chemistry http://dx.doi.org/10.1002/pen.10508 <jats:title>Abstract</jats:title><jats:p>The practical application of high impact polystyrene (HIPS) depends on the resistance to aging in aggressive environments. The investigation of morphological, mechanical, and chemical properties was made on HIPS samples of various thickness. The property deterioration of HIPS caused by concentrated nitric acid and heat was studied. The diffusion through micropores formed visible cracks that finally led to the complete destruction into a powder. The rapid loss in mechanical properties was explained in terms of scission reaction of the graft polybutadiene (PB) with the homopolystyrene (PS) matrix. Comparative measurements of pure PS and PB under the same conditions were helpful in resolving parallel reactions that preferentially take place in PS and/or in PB sequences. It was established that higher degree of nitration caused by higher temperature results in increased insolubility owing to parallel crosslinking reactions. The nitric acid attack on HIPS caused scission reactions, which also led to the oxidative degradation, more pronounced in the PS phase in the soluble part of HIPS.</jats:p> Thermally stimulated oxidative degradation of high impact polystyrene with nitric acid Polymer Engineering & Science |
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Wiley, 1996 |
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Wiley, 1996 |
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1996 |
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Polymer Engineering & Science |
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| title |
Thermally stimulated oxidative degradation of high impact polystyrene with nitric acid |
| title_unstemmed |
Thermally stimulated oxidative degradation of high impact polystyrene with nitric acid |
| title_full |
Thermally stimulated oxidative degradation of high impact polystyrene with nitric acid |
| title_fullStr |
Thermally stimulated oxidative degradation of high impact polystyrene with nitric acid |
| title_full_unstemmed |
Thermally stimulated oxidative degradation of high impact polystyrene with nitric acid |
| title_short |
Thermally stimulated oxidative degradation of high impact polystyrene with nitric acid |
| title_sort |
thermally stimulated oxidative degradation of high impact polystyrene with nitric acid |
| topic |
Materials Chemistry Polymers and Plastics General Chemistry Materials Chemistry Polymers and Plastics General Chemistry |
| url |
http://dx.doi.org/10.1002/pen.10508 |
| publishDate |
1996 |
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1140-1151 |
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<jats:title>Abstract</jats:title><jats:p>The practical application of high impact polystyrene (HIPS) depends on the resistance to aging in aggressive environments. The investigation of morphological, mechanical, and chemical properties was made on HIPS samples of various thickness. The property deterioration of HIPS caused by concentrated nitric acid and heat was studied. The diffusion through micropores formed visible cracks that finally led to the complete destruction into a powder. The rapid loss in mechanical properties was explained in terms of scission reaction of the graft polybutadiene (PB) with the homopolystyrene (PS) matrix. Comparative measurements of pure PS and PB under the same conditions were helpful in resolving parallel reactions that preferentially take place in PS and/or in PB sequences. It was established that higher degree of nitration caused by higher temperature results in increased insolubility owing to parallel crosslinking reactions. The nitric acid attack on HIPS caused scission reactions, which also led to the oxidative degradation, more pronounced in the PS phase in the soluble part of HIPS.</jats:p> |
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| author | Hace, Drago, Kovacevic, Vera, Pajc‐Liplin, Davorka |
| author_facet | Hace, Drago, Kovacevic, Vera, Pajc‐Liplin, Davorka, Hace, Drago, Kovacevic, Vera, Pajc‐Liplin, Davorka |
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| description | <jats:title>Abstract</jats:title><jats:p>The practical application of high impact polystyrene (HIPS) depends on the resistance to aging in aggressive environments. The investigation of morphological, mechanical, and chemical properties was made on HIPS samples of various thickness. The property deterioration of HIPS caused by concentrated nitric acid and heat was studied. The diffusion through micropores formed visible cracks that finally led to the complete destruction into a powder. The rapid loss in mechanical properties was explained in terms of scission reaction of the graft polybutadiene (PB) with the homopolystyrene (PS) matrix. Comparative measurements of pure PS and PB under the same conditions were helpful in resolving parallel reactions that preferentially take place in PS and/or in PB sequences. It was established that higher degree of nitration caused by higher temperature results in increased insolubility owing to parallel crosslinking reactions. The nitric acid attack on HIPS caused scission reactions, which also led to the oxidative degradation, more pronounced in the PS phase in the soluble part of HIPS.</jats:p> |
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| imprint | Wiley, 1996 |
| imprint_str_mv | Wiley, 1996 |
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| physical | 1140-1151 |
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| series | Polymer Engineering & Science |
| source_id | 49 |
| spelling | Hace, Drago Kovacevic, Vera Pajc‐Liplin, Davorka 0032-3888 1548-2634 Wiley Materials Chemistry Polymers and Plastics General Chemistry Materials Chemistry Polymers and Plastics General Chemistry http://dx.doi.org/10.1002/pen.10508 <jats:title>Abstract</jats:title><jats:p>The practical application of high impact polystyrene (HIPS) depends on the resistance to aging in aggressive environments. The investigation of morphological, mechanical, and chemical properties was made on HIPS samples of various thickness. The property deterioration of HIPS caused by concentrated nitric acid and heat was studied. The diffusion through micropores formed visible cracks that finally led to the complete destruction into a powder. The rapid loss in mechanical properties was explained in terms of scission reaction of the graft polybutadiene (PB) with the homopolystyrene (PS) matrix. Comparative measurements of pure PS and PB under the same conditions were helpful in resolving parallel reactions that preferentially take place in PS and/or in PB sequences. It was established that higher degree of nitration caused by higher temperature results in increased insolubility owing to parallel crosslinking reactions. The nitric acid attack on HIPS caused scission reactions, which also led to the oxidative degradation, more pronounced in the PS phase in the soluble part of HIPS.</jats:p> Thermally stimulated oxidative degradation of high impact polystyrene with nitric acid Polymer Engineering & Science |
| spellingShingle | Hace, Drago, Kovacevic, Vera, Pajc‐Liplin, Davorka, Polymer Engineering & Science, Thermally stimulated oxidative degradation of high impact polystyrene with nitric acid, Materials Chemistry, Polymers and Plastics, General Chemistry, Materials Chemistry, Polymers and Plastics, General Chemistry |
| title | Thermally stimulated oxidative degradation of high impact polystyrene with nitric acid |
| title_full | Thermally stimulated oxidative degradation of high impact polystyrene with nitric acid |
| title_fullStr | Thermally stimulated oxidative degradation of high impact polystyrene with nitric acid |
| title_full_unstemmed | Thermally stimulated oxidative degradation of high impact polystyrene with nitric acid |
| title_short | Thermally stimulated oxidative degradation of high impact polystyrene with nitric acid |
| title_sort | thermally stimulated oxidative degradation of high impact polystyrene with nitric acid |
| title_unstemmed | Thermally stimulated oxidative degradation of high impact polystyrene with nitric acid |
| topic | Materials Chemistry, Polymers and Plastics, General Chemistry, Materials Chemistry, Polymers and Plastics, General Chemistry |
| url | http://dx.doi.org/10.1002/pen.10508 |