Bimodal impact strength distribution in HDPE composites: Formulational effects and Bayesian inference
A bimodal impact strength distribution was found in notched impact specimens of HDPE composites with calcium carbonate, carbon black, SEBS and stabilisers. The bimodal distribution was only found at moderate-to-high calcium carbonate loadings, with the likelihood of low impact strength increasing wi...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2024-04-01
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| Series: | Advanced Industrial and Engineering Polymer Research |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2542504823000726 |
| _version_ | 1827277702789332992 |
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| author | David Viljoen Johan Labuschagné Ines Kuehnert |
| author_facet | David Viljoen Johan Labuschagné Ines Kuehnert |
| author_sort | David Viljoen |
| collection | DOAJ |
| description | A bimodal impact strength distribution was found in notched impact specimens of HDPE composites with calcium carbonate, carbon black, SEBS and stabilisers. The bimodal distribution was only found at moderate-to-high calcium carbonate loadings, with the likelihood of low impact strength increasing with increasing stabiliser loading and decreasing with increasing SEBS/CB masterbatch loading. Bayesian methods were used first to confirm bimodality and then to investigate the effects of formulation on the performance of the system, based on a hierarchical model with quadratic and interactive terms and switching based on the sampling of a Bernoulli distribution with a logistic regression informing the probability of high or low impact strength. The results are contextualised through micrograph fractography and, briefly, differential scanning calorimetry. Results are also reported for unnotched impact tests, with negative correlations for impact strength with calcium carbonate and stabilisers, a positive correlation with SEBS/CB and interactive effects. |
| first_indexed | 2024-04-24T07:37:43Z |
| format | Article |
| id | doaj.art-c26efaf352b240ecac311bc8954ec4c6 |
| institution | Directory Open Access Journal |
| issn | 2542-5048 |
| language | English |
| last_indexed | 2024-04-24T07:37:43Z |
| publishDate | 2024-04-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Advanced Industrial and Engineering Polymer Research |
| spelling | doaj.art-c26efaf352b240ecac311bc8954ec4c62024-04-20T04:17:43ZengKeAi Communications Co., Ltd.Advanced Industrial and Engineering Polymer Research2542-50482024-04-0172201214Bimodal impact strength distribution in HDPE composites: Formulational effects and Bayesian inferenceDavid Viljoen0Johan Labuschagné1Ines Kuehnert2Polymer Processing Department, Leibniz-Institut fur Polymerforschung Dresden e.V., Hohe Str. 6, Dresden, 01069, Saxony, Germany; Department of Chemical Engineering, Institute of Applied Materials, University of Pretoria, Lynnwood Rd, Pretoria, 0002, Gauteng, South AfricaDepartment of Chemical Engineering, Institute of Applied Materials, University of Pretoria, Lynnwood Rd, Pretoria, 0002, Gauteng, South AfricaPolymer Processing Department, Leibniz-Institut fur Polymerforschung Dresden e.V., Hohe Str. 6, Dresden, 01069, Saxony, Germany; Corresponding author.A bimodal impact strength distribution was found in notched impact specimens of HDPE composites with calcium carbonate, carbon black, SEBS and stabilisers. The bimodal distribution was only found at moderate-to-high calcium carbonate loadings, with the likelihood of low impact strength increasing with increasing stabiliser loading and decreasing with increasing SEBS/CB masterbatch loading. Bayesian methods were used first to confirm bimodality and then to investigate the effects of formulation on the performance of the system, based on a hierarchical model with quadratic and interactive terms and switching based on the sampling of a Bernoulli distribution with a logistic regression informing the probability of high or low impact strength. The results are contextualised through micrograph fractography and, briefly, differential scanning calorimetry. Results are also reported for unnotched impact tests, with negative correlations for impact strength with calcium carbonate and stabilisers, a positive correlation with SEBS/CB and interactive effects.http://www.sciencedirect.com/science/article/pii/S2542504823000726Bayesian inferencePolymer compositesBimodalImpact strengthFractography |
| spellingShingle | David Viljoen Johan Labuschagné Ines Kuehnert Bimodal impact strength distribution in HDPE composites: Formulational effects and Bayesian inference Advanced Industrial and Engineering Polymer Research Bayesian inference Polymer composites Bimodal Impact strength Fractography |
| title | Bimodal impact strength distribution in HDPE composites: Formulational effects and Bayesian inference |
| title_full | Bimodal impact strength distribution in HDPE composites: Formulational effects and Bayesian inference |
| title_fullStr | Bimodal impact strength distribution in HDPE composites: Formulational effects and Bayesian inference |
| title_full_unstemmed | Bimodal impact strength distribution in HDPE composites: Formulational effects and Bayesian inference |
| title_short | Bimodal impact strength distribution in HDPE composites: Formulational effects and Bayesian inference |
| title_sort | bimodal impact strength distribution in hdpe composites formulational effects and bayesian inference |
| topic | Bayesian inference Polymer composites Bimodal Impact strength Fractography |
| url | http://www.sciencedirect.com/science/article/pii/S2542504823000726 |
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