Двухмасштабная неустойчивость и нетрадиционные кубические симметрии при микрофазном расслоении сложных блок-сополимерных систем
Диссертация
Показано, что микрофазное расслоение в смесях ди-(АС) и три-(АВС) блок-сополимеров может происходить путем роста флуктуаций с двумя существенно различными длинами волн. Одна длина волны соответствует характерному масштабу макромолекул, т. е. пропорциональна радиусу инерции, а другая может быть на порядок больше и связана с возможностью макрофазного расслоения системы. Построенные фазовые портреты… Читать ещё >
Содержание
- 1. Микрофазное расслоение в блок-сополимерных системах
- 1. 1. Общие представления
- 1. 2. Теория микрофазного расслоения в пределе слабой сегрегации
- 1. 2. 1. Корреляционные функции и диаграммная техника
- 1. 3. Традиционные и нетрадиционные кристаллические структуры
- 1. 3. 1. Традиционные морфологии
- 1. 3. 2. Нетрадиционные морфологии
- 1. 4. Угловая зависимость четвертой вершины и устойчивость нетрадиционных морфологий
- 1. 5. Эффекты полидисперсности
- 1. 6. Флуктуационные поправки
- 1. 7. Исследование полимерных систем методами малоуглового рассеяния
- 1. 8. Двухмасштабная неустойчивость и нетрадиционные морфологии
- 2. Двухмасштабная неустойчивость блок-сополимерных систем
- 2. 1. Спинодальный анализ смесей ди-(АС) и три-(АВС) блок-сополимеров
- 2. 1. 1. Теоретическая модель системы
- 2. 1. 2. Приближение случайных фаз для смесей АС и ABC блок-сополимеров
- 2. 1. 3. Обсуждение результатов
- 2. 1. 4. Выводы
- 2. 2. Спинодальный анализ смесей ди-(АВ) и мульти-(АВ)" блок-сополимеров
- 2. 2. 1. Теоретическая модель системы
- 2. 2. 2. Обсуждение результатов
- 2. 2. 3. Выводы
- 2. 1. Спинодальный анализ смесей ди-(АС) и три-(АВС) блок-сополимеров
- 3. 1. Теоретическая модель системы
- 3. 2. Обсуждение результатов
- 3. 2. 1. Симметричные системы (/ = 0.5)
- 3. 2. 2. Несимметричные системы
- 3. 3. Выводы
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