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Dynamics of Poly (butyl acrylate) and Poly (ethyl acrylate) with internal double bonds

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Abstract

In this paper, the changes in dynamics of Poly (butyl acrylate) (PBA) and Poly (ethyl acrylate) (PEA) after introducing internal double bonds (through copolymerizing with isoprene (IP)) were studied through sight of fragility theory. The dynamic fragility was determined. And the result shows that dynamic fragility indexes of PBA-co-IP and PEA-co-IP are smaller than PBA and PEA. Furthermore, the scaled dynamic mechanical spectra show that PBA-co-IP and PEA-co-IP have longer length of glass–rubber transition region. In one side, our work is well fitted to the universal theory that smaller fragility leads to longer soft dispersing in glass–rubber transition region. In the other side, adding internal double bonds is an effective way to weak fragility of polymers, which results in a broader transition region.

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The authors declare no competing financial interests.

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Authors and Affiliations

  1. Department of Polymer Materials and Engineering, College of Materials Science and Engineering, Southwest Petroleum University, Xindu Road No. 8, Chengdu, China, 610500

    Rui Zhang & Xianru He

  2. College of Polymer Science and Engineering, State Key Laboratory of Polymer Material Engineering, Sichuan University, Chengdu, China, 610045

    Guangsu Huang

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  1. Rui Zhang
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  2. Xianru He
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  3. Guangsu Huang
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Correspondence to Xianru He.

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Zhang, R., He, X. & Huang, G. Dynamics of Poly (butyl acrylate) and Poly (ethyl acrylate) with internal double bonds. J Polym Res 21, 388 (2014). https://doi.org/10.1007/s10965-014-0388-5

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  • DOI: https://doi.org/10.1007/s10965-014-0388-5

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