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The study of regenerated cellulose films toughened with thermoplastic polyurethane elastomers

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Abstract

Regenerated cellulose blend film with thermoplastic polyurethane (TPU) was successfully prepared by coagulating cellulose/TPU solution with water in the presence of a thermoplastic polyurethane elastomer (TPU). Compared with pristine regenerated cellulose film, the toughness and thermal stability of the blend film was significantly improved. For example, the elongation at break was increased from 11% of pristine cellulose film to 51% of blend film with 20 wt. % TPU. The 50% weight loss temperature of this blend film was increased by 33 °C compared to neat cellulose. The relaxation transition temperature of cellulose was decreased with the addition of TPU through dynamic mechanical thermal analysis. The oxygen permeability was decreased from 2.3 × 10−10 cm3 cm/cm2 s Pa of pristine cellulose film to 0.08 × 10−10 cm3 cm/cm2 s Pa of the blend film with 20 wt.%. TPU The X-ray diffraction spectra showed that the crystallinity of cellulose decreased with incorporation of TPU. The images of scanning electron microscope discovered that there was good compatibility between cellulose and TPU. TPU was nano-dispersed in cellulose matrix. The blend film still maintained quite good transparency.

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Acknowledgments

The authors gratefully acknowledge Ningbo Key Laboratory of Polymer Materials, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences.

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Authors and Affiliations

  1. Ningbo Key Laboratory of Polymer Materials, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, Zhejiang, People’s Republic of China

    Xiaomin Zhang, Jin Zhu, Xiaoqing Liu & Jiangxiang Feng

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  1. Xiaomin Zhang
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  2. Jin Zhu
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  3. Xiaoqing Liu
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  4. Jiangxiang Feng
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Correspondence to Jin Zhu.

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Zhang, X., Zhu, J., Liu, X. et al. The study of regenerated cellulose films toughened with thermoplastic polyurethane elastomers. Cellulose 19, 121–126 (2012). https://doi.org/10.1007/s10570-011-9623-y

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  • DOI: https://doi.org/10.1007/s10570-011-9623-y

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