Synthesis and Characterization of Semicrystalline Polyimides Containing Bridged Linkages

Table 2

XRD parameters of polyimides.

BTDA-TPER PI	2 (°)	6.631	15.347	18.649	22.143	26.964	27.619	36.992
	(Å)	13.3182	5.7688	4.7540	4.0112	3.3040	3.2241	2.4281
BTDA-ODA PI	2 (°)	9.538	9.965	11.153	16.138	18.153	21.087	22.804
	(Å)	9.2650	8.8687	7.9266	5.4878	4.8829	4.2096	3.8963
ODPA-TPER PI	2 (°)	9.241	18.250	20.195	21.618	24.486	27.950	45.272
	(Å)	9.5617	4.8571	4.3936	4.1075	3.6324	3.1896	2.0014
ODPA-ODA PI	2 (°)	9.533	10.889	17.589	18.875	20.224	21.913	27.425
	(Å)	9.2695	8.1185	5.0381	4.6976	4.3871	4.0528	3.2495