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?
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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
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发表时间:
2019-06
影响因子:
5.8
通讯作者:
Hara Masanori
中科院分区:
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
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.
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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
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
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
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