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Study of γ-irradiation crosslinking ofcis-1,4-polybutadiene by NMR microscopy

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Abstract

Crosslink properties of ψ-irradiatedcis-1,4-polybutadiene (PB) were studied by NMR microscopy. Spin density images of the irradiated bulk materials show that crosslinking at the −CH= atom dominates and the segments between two crosslinks are still flexible enough to twist, forming a dense material.T 1 andT 2 weighted images of these bulk materials show that theT 1/T 2 ratio increases upon irradiation. This is an indication of the increase of stiffness upon irradiation.1H spin density images of the irradiated PB swollen in C6D6 show that the dimension of the cavities formed by irradiation is greater than the space resolution of the experiment.

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Authors and Affiliations

  1. Center for Analysis and Measurement, Fudan University, 200433, Shanghai, China

    Y. Shen & L. Fei

  2. Wuhan Institute of Physics, Chinese Academy of Sciences, Wuhan, China

    X. Zhao

Authors
  1. Y. Shen
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  2. L. Fei
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  3. X. Zhao
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Shen, Y., Fei, L. & Zhao, X. Study of γ-irradiation crosslinking ofcis-1,4-polybutadiene by NMR microscopy. Appl. Magn. Reson. 8, 181–186 (1995). https://doi.org/10.1007/BF03162785

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  • DOI: https://doi.org/10.1007/BF03162785

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