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Synthesis of PP-g-PIP and properties of PP/PP-g-PIP binary blends

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Abstract

The polypropylene-graft-polyisoprene (PP-g-PIP) copolymers with different side chain length were synthesized by the combination of solid phase graft and anionic polymerization. The copolymers were characterized by nuclear magnetic resonance spectrum (1H-NMR), gel permeation chromatography (GPC) and differential scanning calorimetry (DSC). Five PP/PP-g-PIP blends with PP-g-PIP as a flexibilizer to toughen PP were prepared and characterized by scanning electron microscope (SEM), dynamic mechanical analysis (DMA), DSC, wide-angle X-ray diffraction (WAXD). Their morphologies, glass transition temperatures, crystallinity and mechanical properties were investigated. All the results pointed out that the covalent bonding of PP and PIP increased the compatibility and interfacial adhesion, which led to PIP well dispersed in the system and small size PIP particles in the binary blends. In addition, the toughness of PP was improved while its tensile strength slightly decreased.

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Authors and Affiliations

  1. Department of Applied Chemistry, School of Natural and Applied Sciences, Northwestern Polytechnical University, Xi’an, 710072, China

    Cai-jun Zhu, Yi-nan He & Shui-rong Zheng  (郑水蓉)

  2. Beijing National Laboratory of Molecular Sciences, Chinese Academy of Sciences Key Laboratory of Engineering Plastics, Joint Laboratory of Polymer Science and Materials, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China

    Qian Li, Hua-yi Li  (李化毅) & You-liang Hu

  3. Research and Development Center of Shenhua Ningxia Coal Industry Group Co., Ltd., Yinchuan, 750411, China

    Lei Li, He Huang & Wei Yuan

Authors
  1. Cai-jun Zhu
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  2. Lei Li
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  3. Yi-nan He
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  4. He Huang
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  5. Qian Li
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  6. Wei Yuan
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  7. Hua-yi Li  (李化毅)
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  8. Shui-rong Zheng  (郑水蓉)
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  9. You-liang Hu
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Corresponding authors

Correspondence to Hua-yi Li  (李化毅) or Shui-rong Zheng  (郑水蓉).

Additional information

This work was financially supported by the National Natural Science Foundation of China (No. 51403216).

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Zhu, Cj., Li, L., He, Yn. et al. Synthesis of PP-g-PIP and properties of PP/PP-g-PIP binary blends. Chin J Polym Sci 35, 569–580 (2017). https://doi.org/10.1007/s10118-017-1900-2

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  • DOI: https://doi.org/10.1007/s10118-017-1900-2

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