Investigation of Thermal Properties and Growth Mechanisms of Nano-Porous Calixarenes
p-tert-Butylcalixarene (PC4), de-tert-butyl calixarene (DC4) and sulfonated calixarene (SC4) were synthesized by means of acetalization, dealkylation and sulfonation. Their structures and morphologies were characterized with fourier transform infrared spectrometry (FTIR), nuclear magnetic resonance spectroscopy (NMR) and scanning electron microscopy (SEM). The thermal properties of three calixarenes were investigated with thermogravimetric analysis (TGA) and differential thermal gravity (DTG). TGA and DTG curves of calixarenes indicate that the thermal weight loss process of calixarenes includes 2 stages: the stage of inclusion complex loss and the stage of thermal decomposition. According to Kissinger method, the average apparent activation energies (E a ) of thermal decomposition of PC4, DC4 and SC4 are 299.86 kJ/mol, 246.09 kJ/mol and 129.28 kJ/mol, respectively. Furthermore, according to the Phadnis-Deshpande model, the decomposition kinetic models of three calixarene follow nucleation and nuclei growth mechanism, phase boundary mechanism and power law mechanism, respectively.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
Document Type: Short Communication
Publication date: November 1, 2015
More about this publication?
- Nanoscience and Nanotechnology Letters (NNL) is a multidisciplinary peer-reviewed journal consolidating nanoscale research activities in all disciplines of science, engineering and medicine into a single and unique reference source. NNL provides the means for scientists, engineers, medical experts and technocrats to publish original short research articles as communications/letters of important new scientific and technological findings, encompassing the fundamental and applied research in all disciplines of the physical sciences, engineering and medicine.
- Editorial Board
- Information for Authors
- Subscribe to this Title
- Ingenta Connect is not responsible for the content or availability of external websites