Table 1. Molecular Weight Characteristics (Weight Average Molecular Weight; Mw, and Dispersity; Đ = Mw/Mn) and the Content of Nonhydroxyl End Groups (Carboxyl and Aromatic Amine) and TDA in the RPs Obtained by Acidolysis of PUFs at a Weight Ratio of PUF/VP of 6/3 or without the VP Medium (in Bulk) at Different Temperatures, Times, and Molar Ratios of AA to the Urethane Group.
| entry | PUF type | AA/urethane group (mol/mol) | T (°C) | t (min) | nonhydroxyl end-group contentc (mol%) | –COOH contentd (mol%) | –NH2 contente (mol%) | TDA contentf (wt %) | Mw (Da) | Đ |
|---|---|---|---|---|---|---|---|---|---|---|
| ALCUPOL® F-5611 | 3000 | 1.02 | ||||||||
| ALCUPOL® F-4811 | 3500 | 1.02 | ||||||||
| 1 | PUF5611 | 1.1 | 210 | 15 | 15.7 | 2.1 | 3200 | 1.05 | ||
| 2 | PUF5611 | 1.1 | 210 | 30 | 12.3 | 2.9 | 3200 | 1.03 | ||
| 3 | PUF5611 | 1.1 | 210 | 40 | 11.3 | 5.7 | 5.8 | 3.1 | 3200 | 1.03 |
| 4 | PUF5611 | 1.1 | 220 | 15 | 12.3 | 2.2 | 3100 | 1.03 | ||
| 5 | PUF5611 | 1.1 | 220 | 30 | 8.7 | 4.1 | 4.3 | 3.2 | 3100 | 1.03 |
| 6 | PUF5611 | 1.1 | 220 | 40 | 7.3 | 4.3 | 3.2 | 3.6 | 3100 | 1.02 |
| 7 | PUF5611 | 1.1 | 230 | 15 | 12.0 | 2.2 | 3100 | 1.03 | ||
| 8 | PUF5611 | 1.1 | 230 | 30 | 8.3 | 3.6 | 3100 | 1.02 | ||
| 9 | PUF5611 | 1.1 | 230 | 40 | 6.3 | 4.2 | 1.8 | 4.2 | 3100 | 1.02 |
| 10 | PUF5611 | 2.0 | 220 | 30 | 12.3 | 8.1 | 2.4 | 2.4 | 3200 | 1.02 |
| 11 | PUF5611 | 3.0 | 220 | 30 | 15.3 | 13.8 | 1.7 | 1.1 | 3300 | 1.02 |
| 12a | PUF5611-bulk | 1.1 | 230 | 30 | 8.3 | 4.7 | 2.8 | 3.9 | 3200 | 1.03 |
| 13b | PUF4811 | 1.1 | 220 | 30 | 7.3 | 4.0 | 3.7 | 4.0 | 3600 | 1.02 |
| 14b | Post-Consumer PUF | 1.1 | 220 | 30 | 7.3 | 2.7 | 4.1 | 4.1 | 3600 | 1.02 |
| 15 | Recycled PUF5611 | 1.1 | 230 | 40 | 7.0 | 4.1 | 2.1 | 4.3 | 3100 | 1.02 |
a
Acidolysis in bulk was performed with two preheating steps.
b
In calculation of the contents of nonhydroxyl end groups (carboxyl and amine) and TDA, the molecular weight of 3.5 kg mol–1 and the chemical composition of the copolymeric polyol Alcupol F-4811 were taken into account.
c
Calculated according to eq S1.
d
Calculated according to eq S2.
e
Calculated according to eq S3.
f
Calculated according to eq S4.