Comparative study of degradation of PP modified with organic pro-degradant subjected to natural and artificial ageing
In abiotic degradation the action of light radiation is one of the most important parameters, because polymers undergo degradation due to the action of light (natural or artificial). The aim of this study was to investigate the degradation rate for samples of polypropylene (PP) modified with an orga...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Iran Polymer and Petrochemical Institute
1999-11-01
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| Series: | Polyolefins Journal |
| Subjects: | |
| Online Access: | http://poj.ippi.ac.ir/article_1340_a73e08fbd076a1b24772213d027635be.pdf |
| _version_ | 1818558044537094144 |
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| author | Larissa Montagna Ana Paula Pezzin Maria Madalena Forte Ruth Marlene Santana |
| author_facet | Larissa Montagna Ana Paula Pezzin Maria Madalena Forte Ruth Marlene Santana |
| author_sort | Larissa Montagna |
| collection | DOAJ |
| description | In abiotic degradation the action of light radiation is one of the most important parameters, because polymers undergo degradation due to the action of light (natural or artificial). The aim of this study was to investigate the degradation rate for samples of polypropylene (PP) modified with an organic pro-degradant submitted to ageing in a natural environment and to accelerated ageing test. The degradation behavior of the samples exposed to the ageing processes was evaluated through changes in the degree of crystallinity (Xc ), surface morphology (Scanning Electron Microscopy) and molecular weight. The results indicated that for the modified polypropylene samples natural ageing led to a 42.3% reduction in the molecular weight and the surface morphology showed evidence of erosion. In the accelerated ageing process the UV radiation was stronger, which led to a 94.3% increase in the degree of crystallinity and micro-voids were present on the surface of the modified polypropylene. |
| first_indexed | 2024-12-14T00:07:38Z |
| format | Article |
| id | doaj.art-d4e686edbf7c4dc6bd223df3a472f05f |
| institution | Directory Open Access Journal |
| issn | 2322-2212 2345-6868 |
| language | English |
| last_indexed | 2024-12-14T00:07:38Z |
| publishDate | 1999-11-01 |
| publisher | Iran Polymer and Petrochemical Institute |
| record_format | Article |
| series | Polyolefins Journal |
| spelling | doaj.art-d4e686edbf7c4dc6bd223df3a472f05f2022-12-21T23:25:55ZengIran Polymer and Petrochemical InstitutePolyolefins Journal2322-22122345-68681999-11-01329310110.22063/poj.1999.13401340Comparative study of degradation of PP modified with organic pro-degradant subjected to natural and artificial ageingLarissa Montagna0Ana Paula Pezzin1Maria Madalena Forte2Ruth Marlene Santana3UFRGS (Laboratory of Polymeric Materials, Department of Materials Engineering, Federal University of Rio Grande do Sul, 91540-000, Porto Alegre, Rio Grande do Sul, Brazil)UNIVILLE (Engineering of Process Program, University of Joinville Region, Campus Universitário, s/n, Bairro, Bom Retiro, 89.201-972, Joinville, Santa Catarina, Brazil)UFRGS (Laboratory of Polymeric Materials, Department of Materials Engineering, Federal University of Rio Grande do Sul, 91540-000, Porto Alegre, Rio Grande do Sul, Brazil)UFRGS (Laboratory of Polymeric Materials, Department of Materials Engineering, Federal University of Rio Grande do Sul, 91540-000, Porto Alegre, Rio Grande do Sul, Brazil)In abiotic degradation the action of light radiation is one of the most important parameters, because polymers undergo degradation due to the action of light (natural or artificial). The aim of this study was to investigate the degradation rate for samples of polypropylene (PP) modified with an organic pro-degradant submitted to ageing in a natural environment and to accelerated ageing test. The degradation behavior of the samples exposed to the ageing processes was evaluated through changes in the degree of crystallinity (Xc ), surface morphology (Scanning Electron Microscopy) and molecular weight. The results indicated that for the modified polypropylene samples natural ageing led to a 42.3% reduction in the molecular weight and the surface morphology showed evidence of erosion. In the accelerated ageing process the UV radiation was stronger, which led to a 94.3% increase in the degree of crystallinity and micro-voids were present on the surface of the modified polypropylene.http://poj.ippi.ac.ir/article_1340_a73e08fbd076a1b24772213d027635be.pdfpolypropylenedegradationorganic pro-degradant, ultra-violet radiation |
| spellingShingle | Larissa Montagna Ana Paula Pezzin Maria Madalena Forte Ruth Marlene Santana Comparative study of degradation of PP modified with organic pro-degradant subjected to natural and artificial ageing Polyolefins Journal polypropylene degradation organic pro-degradant, ultra-violet radiation |
| title | Comparative study of degradation of PP modified with organic pro-degradant subjected to natural and artificial ageing |
| title_full | Comparative study of degradation of PP modified with organic pro-degradant subjected to natural and artificial ageing |
| title_fullStr | Comparative study of degradation of PP modified with organic pro-degradant subjected to natural and artificial ageing |
| title_full_unstemmed | Comparative study of degradation of PP modified with organic pro-degradant subjected to natural and artificial ageing |
| title_short | Comparative study of degradation of PP modified with organic pro-degradant subjected to natural and artificial ageing |
| title_sort | comparative study of degradation of pp modified with organic pro degradant subjected to natural and artificial ageing |
| topic | polypropylene degradation organic pro-degradant, ultra-violet radiation |
| url | http://poj.ippi.ac.ir/article_1340_a73e08fbd076a1b24772213d027635be.pdf |
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