On the influence of nucleation on the toughness of iPP/EPR blends with different rubber molecular architectures
The influence of α-and β-nucleating agents on the fracture performance of two different 32 wt% rubber modified isotactic Polypropylene (iPP) reactor blends is discussed as a function of the phase morphology of the investigated systems. Nucleation for systems with a large inter-part...
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| Format: | Article |
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| Language: | English |
| Published: |
Budapest University of Technology and Economics
2008-06-01
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| Series: | eXPRESS Polymer Letters |
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| Online Access: | http://www.expresspolymlett.com/letolt.php?file=EPL-0000612&mi=cd |
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| collection | DOAJ |
| description | The influence of α-and β-nucleating agents on the fracture performance of two different 32 wt% rubber modified isotactic Polypropylene (iPP) reactor blends is discussed as a function of the phase morphology of the investigated systems. Nucleation for systems with a large inter-particle distance was found to have only a limited impact on the temperature at which the ductile-brittle transition occurs, negative for α-nucleated blends, almost negligible for β-nucleated resins. For blends exhibiting a small inter-particular distance between their ethylene-propylene rubber (EPR) phase, toughness was promoted slightly by α-nucleation and to a large extent by β-nucleation as compared to a non-nucleated reference. These findings raise the importance of mechanistic synergies between the rubbery phase and the matrix to maximize the fracture resistance of blends. |
| format | Article |
| id | doaj-art-9b3b0df7e4dd4883b9979f60869a8708 |
| institution | Kabale University |
| issn | 1788-618X |
| language | English |
| publishDate | 2008-06-01 |
| publisher | Budapest University of Technology and Economics |
| record_format | Article |
| series | eXPRESS Polymer Letters |
| spelling | doaj-art-9b3b0df7e4dd4883b9979f60869a87082025-08-20T03:57:08ZengBudapest University of Technology and EconomicseXPRESS Polymer Letters1788-618X2008-06-012639239710.3144/expresspolymlett.2008.47On the influence of nucleation on the toughness of iPP/EPR blends with different rubber molecular architecturesThe influence of α-and β-nucleating agents on the fracture performance of two different 32 wt% rubber modified isotactic Polypropylene (iPP) reactor blends is discussed as a function of the phase morphology of the investigated systems. Nucleation for systems with a large inter-particle distance was found to have only a limited impact on the temperature at which the ductile-brittle transition occurs, negative for α-nucleated blends, almost negligible for β-nucleated resins. For blends exhibiting a small inter-particular distance between their ethylene-propylene rubber (EPR) phase, toughness was promoted slightly by α-nucleation and to a large extent by β-nucleation as compared to a non-nucleated reference. These findings raise the importance of mechanistic synergies between the rubbery phase and the matrix to maximize the fracture resistance of blends.http://www.expresspolymlett.com/letolt.php?file=EPL-0000612&mi=cdPolymer blends and alloysfracturedamage mechanismnucleation |
| spellingShingle | On the influence of nucleation on the toughness of iPP/EPR blends with different rubber molecular architectures eXPRESS Polymer Letters Polymer blends and alloys fracture damage mechanism nucleation |
| title | On the influence of nucleation on the toughness of iPP/EPR blends with different rubber molecular architectures |
| title_full | On the influence of nucleation on the toughness of iPP/EPR blends with different rubber molecular architectures |
| title_fullStr | On the influence of nucleation on the toughness of iPP/EPR blends with different rubber molecular architectures |
| title_full_unstemmed | On the influence of nucleation on the toughness of iPP/EPR blends with different rubber molecular architectures |
| title_short | On the influence of nucleation on the toughness of iPP/EPR blends with different rubber molecular architectures |
| title_sort | on the influence of nucleation on the toughness of ipp epr blends with different rubber molecular architectures |
| topic | Polymer blends and alloys fracture damage mechanism nucleation |
| url | http://www.expresspolymlett.com/letolt.php?file=EPL-0000612&mi=cd |