ON THE STRUCTURAL ORIGINS OF SOLID-STATE URETHANE POLYDIACETYLENE THERMOCHROMISM - THERMAL AND STRUCTURAL-PROPERTIES OF IPUDO MONOMER AND POLYMER

被引:32
作者
HANKIN, SHW [1 ]
DOWNEY, MJ [1 ]
SANDMAN, DJ [1 ]
机构
[1] GTE LABS INC,40 SYLVAN RD,WALTHAM,MA 02254
关键词
POLYDIACETYLENE; THERMOCHROMIC TRANSITION; THERMAL ANALYSIS; X-RAY DIFFRACTION;
D O I
10.1016/0032-3861(92)90066-6
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Calorimetric studies of the diacetylene monomer bis-isopropylurethane of 5,7-dodecadiyn-1,12-diol, synthesized by a new method, and the polydiacetylene (PDA) from this monomer (PDA-IPUDO) rule out the possibility that monomer melting plays a significant role in the thermochromic phase transition of this polymer. X-ray powder diffraction studies at room temperature and 150 +/- 5-degrees-C reveal that the structural changes which occur in the course of the endothermic thermochromic phase transition are analogous to those of a related PDA.
引用
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页码:5098 / 5101
页数:4
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