Preparation of Organic-Inorganic Hybrid Materials Based on MCM-41 and Its Applications

Table 2

Results of thermogravimetric analysis.

Sample	Region °C	Weight loss %	Assignment
MCM-PS-TDI-C4	45–120	3.4	Moisture
	120–200	2.4	Calix[4]arene
	200–350	42.1	Linkers and calix [4]arene
	350–800	14.1	Calix[4]arene
MCM-PS-TDI-C4S	45–150	8.3	Moisture
	280–350	21.8	Linkers
	350–800	19.8	Calix[4]arene sulfonate
MCM-PS-TDI-PC4	45–150	3.3	Moisture
	150–350	34.5	Linkers and paratert butyl Calix[4]arene
	400–700	10.4	Paratert butyl calix[4]arene