聚乙烯吡咯烷酮
超细纤维
静电纺丝
材料科学
热稳定性
化学工程
热重分析
傅里叶变换红外光谱
吸附
聚合物
蒸发
热分析
表征(材料科学)
复合材料
纳米技术
热的
高分子化学
有机化学
化学
工程类
物理
气象学
热力学
作者
Emilia Bramanti,Lucio Bonaccorsi,Beatrice Campanella,C. Ferrari,Angela Malara,Angelo Freni
标识
DOI:10.1016/j.matchemphys.2022.126248
摘要
Fibrous composites of tetraethylortosilicate (TEOS)/polyvinylpyrrolidone (PVP) have been successfully prepared by a sol-electrospinning process and characterized by ATR-FTIR spectroscopy, and the spectroscopic features correlated with their morphology and thermal stability. PVP is a polymer with water adsorption capability and the TEOS addition allowed to increase the thermal stability of microfibers. The spectroscopic analysis of the impact of the silica-based reinforcing phase along with morphological and thermal analysis have demonstrated that TEOS in PVP/ethanol system may interfere with the evaporation of water and ethanol during ES process and with the final capacity of the material of adsorbing water. The elucidation of these mechanisms may help in the design of hybrid, organic–inorganic microfibers materials for specific applications, as adsorbent materials for heat pumps.
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