Inside the Ionic Aggregates Constrained by Covalently Attached Polymer Chain Segments: Order or Disorder?

Inside the Ionic Aggregates Constrained by Covalently Attached Polymer Chain Segments: Order or Disorder?
复制标题

受共价连接的聚合物链段约束的离子聚集体内部:有序还是无序?

DOI:
10.1021/acsmacrolett.9b00296
复制
发表时间:
2019-06
期刊:
影响因子:
5.8
通讯作者:
Hara Masanori
Hara Masanori
中科院分区:
化学1区
文献类型:
--
作者:
Yu Zixin;Wang Jie;Hu Zhen;Hu Chuanqun;Ding Dachuan;Yang Bin;Hu Tao;Gong Xinghou;Wu Chonggang;Hara Masanori

文献摘要

参考文献

相似文献

当小分子离子晶体被聚合物链段基团取代形成离聚物时,其受约束的离子聚集体是否保持有序的内部结构?这项工作提出了钠盐磺化聚苯乙烯离聚物的调和 TEM 电子衍射纹影纹理和来自离子聚集体纳米域的 WAXS 布拉格型反射,这有力地证明了聚集体的内部(单)晶序。观察到的离聚物的 DSC 吸热(通过 WAXS 识别为其聚集体内部的有序-无序转变)在 3 个月的室温物理老化过程中逐渐增强,表明聚集体的有序度是一个缓慢的松弛过程,其中有序度随着时间的推移而增加。这项工作证实了一种不常见的有序形式,即聚合物结合的小分子离子(准)晶体,它是对小分子、聚合物和液晶中有序现象的补充。
When a small-molecule ionic crystal is group-substituted with polymer chain-segments to form an ionomer, do its constrained ionic aggregates maintain ordered internal structures? This work presents, for a Na-salt sulfonated-polystyrene ionomer, reconciled TEM electron-diffraction schlieren textures and WAXS Bragg-type reflections from the ionic-aggregate nanodomains, which solidly prove the aggregates' internal (mono)crystalline order. The observed DSC endotherm of the ionomer, identified by WAXS as an order-disorder transition interior to its aggregates, gradually becomes enhanced over a 3-month, room-temperature physical aging process, indicating that the aggregates' ordering is a slow relaxation process in which the degree of order increases with time. This work corroborates an uncommon form of order, i.e., polymer-bound small-molecule ionic (quasi)crystal, which is supplementary to the order phenomena in small molecules, polymers, and liquid crystals.
DOI: 10.1098/rspa.1946.0093
发表时间: 1946-01-01
影响因子: --
作者:
BORN, M;GREEN, HS
通讯作者: GREEN, HS
DOI: 10.1021/ma00191a043
发表时间: 1989
期刊: Macromolecules
影响因子: 5.5
作者:
K. Tadano;Eisaku Hirasawa;Hitoshi Yamamoto;S. Yano
通讯作者: K. Tadano;Eisaku Hirasawa;Hitoshi Yamamoto;S. Yano
DOI: 10.1021/ma052275a
发表时间: 2006-02-21
期刊: MACROMOLECULES
影响因子: 5.5
作者:
Batra, A;Cohen, C;Winey, KI
通讯作者: Winey, KI
DOI: 10.1002/pol.1984.180221207
发表时间: 1984-12
期刊: Journal of Polymer Science Part B
影响因子: --
作者:
D. J. Yarusso;Y. S. Ding;H. Pan;S. Cooper
通讯作者: D. J. Yarusso;Y. S. Ding;H. Pan;S. Cooper
DOI: 10.1063/1.334301
发表时间: 1984-11
影响因子: 3.2
作者:
Y. S. Ding;D. J. Yarusso;H. Pan;S. Cooper
通讯作者: Y. S. Ding;D. J. Yarusso;H. Pan;S. Cooper