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Non-Isothermal Crystallization Kinetics of Poly(ethylene glycol) and Poly(ethylene glycol)-B-Poly(ε-caprolactone) by Flash DSC Analysis
| Content Provider | MDPI |
|---|---|
| Author | Li, Xiaodong Zou, Meishuai Lei, Lisha Xi, Longhao |
| Copyright Year | 2021 |
| Description | The non-isothermal crystallization behaviors of poly (ethylene glycol) (PEG) and poly (ethylene glycol)-b-poly(ε-caprolactone) (PEG-PCL) were investigated through a commercially available chip-calorimeter Flash DSC2+. The non-isothermal crystallization data under different cooling rates were analyzed by the Ozawa model, modified Avrami model, and Mo model. The results of the non-isothermal crystallization showed that the PCL block crystallized first, followed by the crystallization of the PEG block when the cooling rate was 50–200 K/s. However, only the PEG block can crystallize when the cooling rate is 300–600 K/s. The crystallization of PEG-PCL is completely inhibited when the cooling rate is 1000 K/s. The modified Avrami and Ozawa models were found to describe the non-isothermal crystallization processes well. The growth methods of PEG and PEG-PCL are both three-dimensional spherulitic growth. The Mo model shows that the crystallization rate of PEG is greater than that of PEG-PCL. |
| Starting Page | 3713 |
| e-ISSN | 20734360 |
| DOI | 10.3390/polym13213713 |
| Journal | Polymers |
| Issue Number | 21 |
| Volume Number | 13 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-10-27 |
| Access Restriction | Open |
| Subject Keyword | Polymers Peg-pcl Non-isothermal Crystallization Flash Differential Scanning Calorimeter |
| Content Type | Text |
| Resource Type | Article |
