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    黎明, 孙平川, 王亦农, 马建标, 黄文强, 何炳林. 交联网络和浓溶液中高分子链运动的NMR研究 Ⅱ质子自旋-自旋弛豫与凝胶和浓溶液体系中高分子链段运动[J]. 功能高分子学报, 1998, 11(3).
    引用本文: 黎明, 孙平川, 王亦农, 马建标, 黄文强, 何炳林. 交联网络和浓溶液中高分子链运动的NMR研究 Ⅱ质子自旋-自旋弛豫与凝胶和浓溶液体系中高分子链段运动[J]. 功能高分子学报, 1998, 11(3).
    The NMR Studies of Macromolecular Segement Movement in Crosslink Network and Concentrated Solution 2. Proton Spin-Spin Relaxation vs Macromolecular Segment Movement in Gel and Concentrated Polymer Solution Systems[J]. Journal of Functional Polymers, 1998, 11(3).
    Citation: The NMR Studies of Macromolecular Segement Movement in Crosslink Network and Concentrated Solution 2. Proton Spin-Spin Relaxation vs Macromolecular Segment Movement in Gel and Concentrated Polymer Solution Systems[J]. Journal of Functional Polymers, 1998, 11(3).

    交联网络和浓溶液中高分子链运动的NMR研究 Ⅱ质子自旋-自旋弛豫与凝胶和浓溶液体系中高分子链段运动

    The NMR Studies of Macromolecular Segement Movement in Crosslink Network and Concentrated Solution 2. Proton Spin-Spin Relaxation vs Macromolecular Segment Movement in Gel and Concentrated Polymer Solution Systems

    • 摘要: 用自旋-自旋弛豫时间考察了线型聚苯乙烯溶液与溶胀交联聚丙烯酰胺-丙烯酸凝胶的质子弛豫行为。发现在溶胀交联体系中,不论交联度高低,聚丙烯酰胺-丙烯酸质子的弛豫时间弛豫都呈现出双指数衰减特征;而在线型溶液体系中,聚苯乙烯质子的弛豫时间弛豫符合单指数衰减特征。说明在线性聚苯乙烯溶液中,高分子的链段运动是一种均匀行为,而在溶胀交联聚丙烯酰胺-丙烯酸体系中,不论交联度高低,高分子链段运动始终存在快慢不同的两部分。

       

      Abstract: The spin-spin relaxation time (T 2) is used to study the proton relaxation behavior in crosslinked (polyacrylamide-acrylic acid) (P(AAM-AAc)) network and linear polystyrene (PS) solution. It is found that the proton T 2 relaxation time of P(AAM-AAc) sh

       

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