Table 1. Chemical reagents.
| Reagent name | Specifications | Source |
|---|---|---|
| IPDI | 99% | Aladdin Reagents (Shanghai) Co., Ltd |
| PBA | 99% | Aladdin Reagents (Shanghai) Co., Ltd |
| DMPA | 99% | Aladdin Reagents (Shanghai) Co., Ltd |
| BDO | 99% | Aladdin Reagents (Shanghai) Co., Ltd |
| TEA | 99% | Aladdin Reagents (Shanghai) Co., Ltd |
| PAM | Molecular weight ∼12 000 000 | Aladdin Reagents (Shanghai) Co., Ltd |
| DMF | AR | Aladdin Reagents (Shanghai) Co., Ltd |
| DBTDL | 95% | Aladdin Reagents (Shanghai) Co., Ltd |