Preparation and Characterization of Polyurethane Nanocomposites Using Vietnamese Montmorillonite Modified by Polyol Surfactants

Table 2

Thermal analysis data of polyurethane nanocomposites for different loading contents of PEO-MMT.

System	PEO-MMT load (% of mass)	𝑇ID^∗ (°C)	𝑇max1^∗∗ (°C)	𝑇max2^∗∗ (°C)	Weight loss (wt%)
					190–320(°C)	320–570(°C)
PU	0	196	314	570	~78	~21.4
PU/PEO-MMT	1	206	329	565	~83	~16.1
	3	230	324	568	~80.1	~17.2
	5	251	332	565	~77	~18.1
	7	255	333	564	~76	~17.6
PU/PVA-MMT	1	210	320	568	~79	~20.7
	3	235	327	571	~83	14.8
	5	254	335	566	~77	~18.3
	7	261	337	565	~75	~19.5

^∗𝑇_ID: initial decomposition temperature.
^∗∗𝑇_max1  and  𝑇_max2: maximal decomposition temperature at the first and second stage, respectively.