ЗАКОНОМЕРНОСТИ ФОРМИРОВАНИЯ СТРУКТУРЫ И СВОЙСТВ МИКРОКРИСТАЛЛИЧЕСКОЙ ЦЕЛЛЮЛОЗЫ ИЗ ЛИГНОЦЕЛЛЮЛОЗНОГО СЫРЬЯ

В обзоре систематизированы и обобщены современные представления о микрокристаллической целлюлозе (МКЦ) как о многофункциональном материале с высоким адаптивным потенциалом. Проведен сравнительный анализ сырьевой базы: от традиционных источников (древесина, хлопок) до альтернативных агропромышленных отходов (рисовая шелуха, багасса, солома, оболочки какао-бобов) и вторичного текстиля. Ключевой акцент сделан на установлении закономерностей в системе «структура сырья – параметры выделения – функциональные свойства МКЦ». Детально рассмотрены механизмы получения МКЦ, включая классический кислотный гидролиз, органосольвентные методы, газофазную деструкцию HCl и гидротермальные процессы. Показано, как специфика лигноцеллюлозной матрицы и условия ее обработки предопределяют степень полимеризации, индекс кристалличности, полиморфный состав и морфологию частиц, регулируя сорбционную способность и реакционную активность продукта. Особое внимание уделено стратегиям направленной химической и физической модификации – окислению, этерификации и прививочной полимеризации, расширяющим области применения МКЦ в фармацевтике – для прямого прессования, в биомедицине – для создания гидрогелей и раневых покрытий, в экологии – в качестве сорбентов, а также при создании биокомпозитов. Научная ценность работы заключается в обосновании перехода от концепции МКЦ как инертного наполнителя к ее пониманию как проектируемого функционального прекурсора с заданными эксплуатационными характеристиками.

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