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Brittle ductile transition of POE toughened HDPE and its lowest rigidity loss: effect of HDPE molecular weight

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Abstract

In this study, the brittle-ductile transition of poly(ethylene-co-octene) (POE) toughened high density polyethylene (HDPE) was studied in terms of HDPE molecular weight, elastomer content and temperature. The relation among HDPE molecular weight, critical elastomer content and temperature, the relation among critical interparticle distance (\({ID}_{c}\)), HDPE molecular weight and temperature at critical brittle-ductile transition point were given. From these relations, the high impact HDPE blends with the lowest elastomer content, i.e. with the lowest rigidity loss, could be obtained. The results show that the lowest modulus loss for high impact HDPE/POE blend reduces markedly with the increase of HDPE molecule weight.

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Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (21875242, U21A2088) and R&D Foundation of Liaoyang Municipal Government.

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Authors and Affiliations

  1. University of Science and Technology of China, Hefei, 230026, People’s Republic of China

    Dongdong Wang, Fushi Li, Wei Jiang & Haojun Liang

  2. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, People’s Republic of China

    Dongdong Wang, Fushi Li, Yunbao Gao & Wei Jiang

  3. Liaoyang Kangda Plastic Resin Co. Ltd, Liaoning, 111000, People’s Republic of China

    Xiangming Xu, Lin Zhong & Chong Guan

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  1. Dongdong Wang
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  2. Fushi Li
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Highlights

• The relation among HDPE molecular weight, critical elastomer content and temperature, the relation among critical interparticle distance (IDc), HDPE molecular weight and temperature at critical brittle-ductile transition point were given.

• The higher number average molecular weight, the higher temperature, and the larger IDc is.

• The lowest modulus loss for high impact HDPE/POE blend reduces markedly with the increase of HDPE molecule weight.

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Wang, D., Li, F., Xu, X. et al. Brittle ductile transition of POE toughened HDPE and its lowest rigidity loss: effect of HDPE molecular weight. J Polym Res 29, 38 (2022). https://doi.org/10.1007/s10965-021-02882-7

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