Особливості теплового руху в кристалах, утворених молекулами броміду цетилтриметиламонію
Phase transformations in CTAB polycrystals are investigated with the use of the thermophysical, dielectric, and spectroscopic techniques. A molecular model of these transformations is proposed. According to this model, the free volume in the intercrystalline layer of CTAB polycrystals starts to grow...
Збережено в:
| Дата: | 2025 |
|---|---|
| Автори: | , , , , |
| Формат: | Стаття |
| Мова: | Ukrainian English |
| Опубліковано: |
Publishing house "Academperiodika"
2025
|
| Теми: | |
| Онлайн доступ: | https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2022236 |
| Теги: |
Додати тег
Немає тегів, Будьте першим, хто поставить тег для цього запису!
|
| Назва журналу: | Ukrainian Journal of Physics |
Репозитарії
Ukrainian Journal of Physics| Резюме: | Phase transformations in CTAB polycrystals are investigated with the use of the thermophysical, dielectric, and spectroscopic techniques. A molecular model of these transformations is proposed. According to this model, the free volume in the intercrystalline layer of CTAB polycrystals starts to grow at 10 °С, and Br− ions bound with the –N(CH3)3 terminal groups increase their mobility. At 55 °С, topological solitons of the “one-unit constriction with 180° reorientation” type appear. They arise at terminal methyl groups, pass by the molecules, and are reflected from–N(CH3)3 groups. In this case, CTAB crystals pass to the orthorhombic rotation-crystalline phase. At 92 °С, topological solitons change the orientation of the terminal –N(CH3)3 groups, which results in the melting of nonpolar aliphatic layers. |
|---|