Analysis of diffusion in polymers by forward recoil spectrometry
Analysis of diffusion in polymers by forward recoil spectrometry
复制标题
通过正向反冲光谱法分析聚合物中的扩散
DOI：
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发表时间：
1984
期刊：
影响因子：
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通讯作者：
E. Kramer
中科院分区：
文献类型：
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作者：
P. Mills;P. Green;C. J. Palmstro;J. Mayer;E. Kramer
我们证明了用离子束分析方法来探测前向反冲氚的能量可以用来测量氚代聚合物(d-聚苯乙烯)扩散到它的氢化类似物中的浓度分布和示踪扩散系数D*。根据聚合物扩散的旋转理论预测，D*‘S减小为M−2，与同一体系中D*的理论测量和标记物位移测量的大小一致。
We demonstrate that an ion beam analysis method that detects the energies of forward recoiling deuterons can be used to measure concentration profiles and tracer diffusion coefficients D* of a deuterated polymer (d‐polystyrene) diffusing into its hydrogenated analog. The D*’s decrease as M−2 as predicted by the reptation theory of polymer diffusion and agree in magnitude with both the theory and marker displacement measurements of D* in the same system.