Оптимізований дизайн та одержання поліетиленглі-коль 1000/поліамід 6 (peg1000/pa6) нановолокон як матеріалів з фазовим переходом (pcms)
Affiliation:
1 Department of Chemical Engineering, Shiraz University, Shiraz 7134851154, Iran
ghkarimi@shirazu.ac.ir, karimi1342@gmail.com; mah-naz131@gmail.com
DOI:
https://doi.org/10.23939/chcht17.02.386
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Keywords:
Abstract:
Ультрадисперсні нановолокна з фазовим переходом на основі поліетиленгліколю 1000 (PEG1000) як матеріалу з фазовим переходом (PCM) та поліаміду 6 (PA6) як допоміжного матеріалу виготовлено методом однонаправленого електроспінінгу на систематизованій основі, запланованій програмним забезпеченням Design-Expert®. Застосовано метод поверхневого відгуку (RSM) для оптимізації параметрів та умов, що ведуть до мінімізації діаметра волокна. За допомогою центрального композиційного плану (CCD) вивчено вплив вмісту PEG, прикладеної напруги, калібру голки та швидкості потоку на характеристики волокна. Згідно розрахунків за квад¬ратичною моделлю мінімальний діаметр нановолокон становить 64,33 нм; фактичний діаметр волокон, виготовлених за оптимальних умов, показав дуже низьку відносну стандартну похибку (RSE). Встановлено, що масове співвідношення PEG/ PA6 має домінуючий вплив на діаметр волокон. Результати FTIR та FE-SEM підтвердили інкапсуляцію PEG у PA6, і відсутність змін у морфології після тестів на нагрівання. Для подальшого дослідження морфологічної структури та якості інкапсуляції PEG1000 у матрицях PA6 композиційні волокна проведено оброблення розчинником з використанням етанолу. Запропоновано новий інноваційний метод контролю умов електроспінінгу для інкапсуляції матеріалів з фазовим переходом в полімерних матрицях, що є дуже важливим у програмах енергозбереження/енерговідновлення.
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