New Solvent for Polyamide 66 and Its Use for Preparing a Single-Polymer Composite-Coated Fabric

Table 2

Values for the pH and the relative components and also the observations.

Sample name	pH	U/Ca	U/FA	100^∗U/(FA + Ca + W)	100^∗Ca/(FA + U + W)	Observation^∗
100-0-0-0	−1.74	—	0.00	0.00	0.00	Excellent
60-7-20-13	−0.74	0.33	0.11	7.14	25.00	Excellent+
64-7-14-14	−0.54	0.50	0.11	7.69	16.67	Excellent
90-0-0-10	−1.10	—	0.00	0.00	0.00	Excellent
90-10-0-0	−0.18	—	0.11	11.11	0.00	Excellent
82-9-9-0	−0.75	1.00	0.11	10.00	10.00	Excellent
69-8-15-8	−0.74	0.50	0.11	8.33	18.18	Good
67-4-30-0	−1.64	0.13	0.06	3.85	42.11	Good
82-0-0-18	−0.56	—	0.00	0.00	0.00	Good
75-8-17-0	−0.95	0.50	0.11	9.09	20.00	Good
75-0-0-25	−0.30	—	0.00	0.00	0.00	Fairly good
55-6-39-0	−1.69	0.15	0.11	6.45	65.00	Fairly poor
50-8-42-0	−1.61	0.20	0.17	9.09	71.43	Fairly poor
47-8-39-5	−1.50	0.20	0.17	8.57	65.22	Fairly poor
56-6-25-13	−0.91	0.25	0.11	6.67	33.33	Poor
50-6-28-17	−0.90	0.20	0.11	5.88	38.46	Poor
43-7-36-14	−1.08	0.20	0.17	7.69	55.56	Bad
38-6-43-13	−1.42	0.15	0.17	6.82	74.07	Bad
35-6-48-12	−1.66	0.12	0.17	6.12	92.59	Bad

The markings were assigned based on the homogeneity of the solutions and the uniformity of the cast film on the glass.