Radiation grafting of poly(vinyl acetate) onto wheat straw and properties of the product

Ping Qu; Guo-Feng Wu; Jing-Xia Wu; Yong-Fu Zhao

doi:10.1007/s41365-017-0312-x

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Radiation grafting of poly(vinyl acetate) onto wheat straw and properties of the product

NUCLEAR CHEMISTRY, RADIOCHEMISTRY, NUCLEAR MEDICINE | Updated：2021-02-26

- Radiation grafting of poly(vinyl acetate) onto wheat straw and properties of the product
- Nuclear Science and Techniques Vol. 28, Issue 11, Article number: 156(2017)
- Affiliations：
  
  1.Institute of Agricultural Facilities and Equipment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
  2.Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Science, Nanjing 210014, China
- Author bio：
  
  Corresponding author: qupinghappy@163.com
- Funds：
- DOI：10.1007/s41365-017-0312-x
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Ping Qu, Guo-Feng Wu, Jing-Xia Wu, et al. Radiation grafting of poly(vinyl acetate) onto wheat straw and properties of the product. [J]. Nuclear Science and Techniques 28(11):156(2017)
DOI：

Ping Qu, Guo-Feng Wu, Jing-Xia Wu, et al. Radiation grafting of poly(vinyl acetate) onto wheat straw and properties of the product. [J]. Nuclear Science and Techniques 28(11):156(2017) DOI： 10.1007/s41365-017-0312-x.

摘要

Abstract

Poly(vinyl acetate) (PVAc) was grafted onto wheat straw by γ-irradiation to improve the compatibility between wheat straw and high density polyethelene (PE). The grafting was proved by Fourier transform infrared (FTIR) spectroscopy. The compact structure of wheat straw was loosened because the chemical bonds and crystalline structure were destructed by the ,γ,-rays. The modified wheat straw needed less energy for thermal transition, as revealed by differential scanning calorimetry (DSC). Thermal analysis revealed that grafted PVAc acted as a protective barrier for the wheat straw, and leads to an increase in maximum pyrolysis temperature. The crystallite size of grafted wheat straw decreased to 5.33 nm from 5.63 before irradiation. There were holes in melted form appeared on the surface of the grafted wheat straws. Both the grafted PVAc and irradiation are beneficial to lower the torque of wheat straw/PE melts and improve its mechanical properties by 36%. Possible mechanism of irradiation grafting was proposed.

关键词

Keywords

Wheat strawPoly(vinyl acetate)Radiation graftingComposites

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Beijing National Laboratory for Molecular Sciences, Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, the Key Laboratory of Polymer Chemistry and Physics of the Ministry of Education, College of Chemistry and Molecular Engineering, Peking University

School of Materials and Engineering, University of Science and Technology Beijing

Department of Energy and Resources Engineering, College of Engineering, Peking University

Beijing National Laboratory for Molecular Sciences, Department of Applied Chemistry, College of Chemistry & Molecular Engineering, Peking University

Instituto de Pesquisas Energéticas e Nucleares – IPEN/CNEN-SP, Av. Prof. Lineu Prestes, 2242, Cidade Universitária

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