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Compatibility and thermal decomposition behavior of acrylic block copolymer modified epoxy resin

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Abstract

A series of epoxy modified with acrylic amphiphilic block copolymer (BCP) were prepared with different BCP contents. The compatibility between BCP and epoxy matrix was characterized by differential scanning calorimetry (DSC). The nanostructures in the thermosets were investigated by means of atomic force microscopy (AFM). The thermal stability and degradation kinetics of BCP/epoxy blends were investigated that by thermogravimetric analysis (TGA) in N2 atmosphere. The ‘model free method (Vyazovkin’ method) and ‘model fitting’ methods (Coats-Redfern method, Málek method and ABS differential method) were applied to analyze the decomposition of cured neat epoxy and BCP/epoxy blends. The glass transition temperature (Tg) of the BCP/epoxy blends was found almost not affected by the incorporation of BCP. The miscibility of acrylic BCP in the epoxy matrix was verified by comparing the theoretical calculation with experimental results. AFM further confirmed the good miscibility of the blends. The thermal stability of the BCP/epoxy blends remained unchanged and the main decompose reaction was slightly accelerated from the perspective of transition state theory. The relationship between pre-exponential factor and reaction activation energy was established by utilizing the kinetic compensation parameter method. The degradation kinetics of both neat epoxy and BCP/epoxy blend were found abide to the Fn (n > 3/2) reaction mechanism.

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The experimental data used to support the results of this study is include in the diagram of this paper. Except where it has been specially marked and acknowledge,the paper does not contain any research result that have been published or written by others. Welcome guidance and supervision.

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Acknowledgements

We gratefully acknowledge support from the Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules.

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Authors and Affiliations

  1. Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials & Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry & Chemical Engineering, Hubei University, Wuhan, 430062, China

    Panpan Zhou, Lusi Zou, Ankang Yang, Shufang Jiang & Rong Guan

  2. Petroleum Recovery Research Center, New Mexico Institute of Mining and Technology, Socorro, NM, 87801, USA

    Lusi Zou

  3. Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, NY, 12180, USA

    Shangwen Zha

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  1. Panpan Zhou
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Zhou, P., Zou, L., Zha, S. et al. Compatibility and thermal decomposition behavior of acrylic block copolymer modified epoxy resin. J Polym Res 27, 4 (2020). https://doi.org/10.1007/s10965-019-1903-5

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