CAESURA Studies of Helical Jump Motions in Semi-Crystalline Polymers

CAESURA Studies of Helical Jump Motions in Semi-Crystalline Polymers
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半结晶聚合物中螺旋跳跃运动的 CAESURA 研究

DOI:
10.1002/macp.200700192
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发表时间:
2007
影响因子:
2.5
通讯作者:
Shao L
Shao L
中科院分区:
化学4区
文献类型:
--
作者:
Shao L

文献摘要

相似文献

介绍了CAESURA实验在研究半结晶聚合物螺旋跳跃运动中的应用。CAESURA是最近提出的魔角自旋交换NMR实验,它提供了有关分子运动的时间尺度和几何形状的详细信息。CAESURA的螺旋跳跃运动在一系列半结晶聚合物的研究中的潜在效用说明使用模拟数据。此外,全同立构聚丙烯的一个完整的实验研究,证实了螺旋跳跃运动的几何形状,并提供了一个测量的跳跃率。
Applications of the CAESURA experiment to studies of helical jump motions in semi‐crystalline polymers are described. CAESURA is a recently proposed magic angle spinning exchange NMR experiment which provides detailed information about the timescale and geometry of molecular motions. The potential utility of CAESURA in studies of helical jump motions in a range semi‐crystalline polymers is illustrated using simulated data. In addition, a full experimental investigation of isotactic poly(propylene) is described which confirms the geometry of the helical jump motion and provides a measurement of the jump rate.