Study on the Dynamic Rheological Behavior of Four Different Bimodal Polyethylenes |
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| Authors: | Yang Chen Huawei Zou Mei Liang Pengbo Liu |
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| Affiliation: | The State Key Laboratory of Polymer Materials Engineering , Polymer Research Institute of Sichuan University , Chengdu , China |
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| Abstract: | The dynamic rheological properties of four bimodal polyethylene samples with different molecular parameters were studied. The Cole-Cole plots, Han curves, Van Gurp’ plots, and master curves of elastic modulus, tan delta, and complex viscosity suggested that these four samples showed different micro-phase compatibility and the chain correlations affected strongly the chain dimensions of the polymer blends. A reduction of chain dimension would lead to a decrease of the possibility for a molecule in the melt to form a tie molecule and thus could affect the application performance of bimodal polyethylenes. |
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| Keywords: | bimodal polyethylene dynamic rheological properties |
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