The effect of cross-linkers with multi-armed structures on gas transport properties in star-like poly (ethylene oxide) polymers
The effect of cross-linkers with multi-armed structures on gas transport properties in star-like poly (ethylene oxide) polymers
复制标题
多臂结构交联剂对星状聚环氧乙烷聚合物气体传输性能的影响
DOI：
10.1080/01496395.2017.1380667
复制
发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Zhang Yuzhong
中科院分区：
文献类型：
--
作者：
Zhao Hongyong;Kang Changyong;Ding Xiaoli;Wang Ran;Tan Xiaoyao;Zhang Yuzhong
通过引入三核、四核、五核和六核的交联剂，制备了四个系列的星形聚环氧乙烷。通过傅里叶变换红外光谱进行化学表征。通过差示扫描量热法评价了热性能。用广角X射线衍射法研究了聚合物的平均链间距离。报道了引入具有不同活性核和多臂的交联剂对气体传输性能的影响。讨论了气体输运性质与物性的关系。这些聚合物中的一些对CO2/N2表现出突出的渗透分离性能，超过CO2/N2 Robeson上限线。
ABSTRACT Four series of star-like poly (ethylene oxide) have been prepared by incorporating the cross-linkers with tri-reactive cores, tetra-reactive cores, penta-reactive cores, and hexa-reactive cores, respectively. Chemical characterization was performed by Fourier transform infrared spectroscopy. The thermal properties were evaluated by differential scanning calorimetry. The average chain-to-chain distance in polymers was investigated by wide-angle X-ray diffraction. The effect of incorporating the cross-linkers with various reactive cores and multi-arms on the gas transport properties was reported. The relationship between the gas transport properties and physical properties was also discussed. Some of these polymers exhibit outstanding permeation–separation performance for CO2/N2, exceeding the CO2/N2 Robeson upper-bound line.