Effect of Temperature and Catalyst Concentration on Polyglycerol during Synthesis

Table 3

Temperature (°C), catalyst concentration % (w/w), and relative area under spectra region used to quantify and identify different polyglycerol carbons. All experiments were carried out in duplicate.

Temperature (°C)	Catalyst % (w/w)	-CH2OH carbons; 60–64 ppm; terminal units; (%)	-CHOH-, -CH2-O- carbons; 68–73 ppm; polyether chains and pending hydroxyl groups; (%)	-CH-O- carbons; 74–82 ppm branching; (%)
130	1.5	46.1 ± 0.5	51.8 ± 1.4	2.0 ± 0.9
130	5.2	50.1 ± 0.3	47.7 ± 0.8	2.2 ± 0.5
150	1.5	30.6 ± 1.2	61.1 ± 0.6	8.3 ± 0.6
150	5.2	14.2 ± 0.0	55.9 ± 0.3	29.9 ± 0.3