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Thermoplastic polyurethane/polypropylene blends in a co-rotating non-twin screws extruder

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Abstract

Thermoplastic polyurethane (TPU)/polypropylene (PP) blends of different weight ratios were prepared with a self-made co-rotating non-twin screws extruder (NTSE), which rotates at a speed ratio of 2.0, and a traditional twin-screw extruder (TSE), which rotates at a speed ratio of 1.0. The mechanical properties, phase morphology and thermal stabilities were investigated to characterize the effect of different processing methods. The experimental results revealed that the samples prepared with a NTSE had superior mechanical properties compared to those of the samples prepared with a TSE. High-resolution scanning electron microscopy showed a structure feature of fiber morphology of TPU/PP blends prepared with a NTSE and the particle size of dispersed phase of blends prepared with NTSE is smaller than that prepared with TSE, indicating that the NTSE is more efficient in mixing for immiscible polymer blends. Furthermore, thermogravimetric analysis curves indicated the strong interaction of the TPU/PP blends influenced by the flow field in NTSE, compared to that of TSE-extruded.

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Authors and Affiliations

  1. Technology Development Center for Polymer Processing Engineering of Guangdong Colleges and Universities, Guangdong Industry Technical College, Guangzhou, 510300, China

    Jia-sheng Luo, Bai-ping Xu & Hui-wen Yu

  2. College of Mechanical and Electrical Engineering, Wuyi University, Jiangmen Guangdong, 529020, China

    Jia-sheng Luo, Bai-ping Xu & Yao-xue Du

  3. National Engineering Research Center of Novel Equipment for Polymer Processing, South China University of Technology, Guangzhou, 510640, China

    Yan-hong Feng

Authors
  1. Jia-sheng Luo
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  2. Bai-ping Xu
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  3. Hui-wen Yu
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  4. Yao-xue Du
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  5. Yan-hong Feng
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Correspondence to Bai-ping Xu.

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Luo, Js., Xu, Bp., Yu, Hw. et al. Thermoplastic polyurethane/polypropylene blends in a co-rotating non-twin screws extruder. Fibers Polym 16, 95–104 (2015). https://doi.org/10.1007/s12221-015-0095-9

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  • DOI: https://doi.org/10.1007/s12221-015-0095-9

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