Solvent aided NMR microscopy of γ-irradiatedcis 1,4-polybutadiene |
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| Authors: | X Zhao Y -M Shen Y -R Du C -H Ye |
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| Institution: | 1. Wuhan Institute of Physics, Chinese Academy of Sciences, 430071, Wuhan, China
2. Center of Analysis and Measurement, Fudan University, Shanghai, China
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| Abstract: | Cross-linked structure of γ-irradiatedcis 1,4-polybutadiene (PBi) was studied by NMR microscopy with the aid of deuterated benzene. After PBi was swollen (PBiS) in C6D6, the1H NMR linewidth of the polymer was reduced from 4 to 2 kHz. The images show that the relaxation times,T 1 andT 2, of PBiS are longer than those of PBi. The simultaneous increase ofT 1 andT 2 implies that the molecular chains of PBi become more mobile upon swelling. The enhanced mobility of the molecular chains may provide a possibility of the increase in space resolution. |
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