Research Article
Study on Thermal Behavior of Some Biocompatible and Biodegradable Materials Based on Plasticized PLA, Chitosan, and Rosemary Ethanolic Extract
Table 1
Thermal characteristics of the plasticized PLA/PEG/CS/R systems determined by the DSC method.
| | Sample | (°C) | (°C) | (J/g) | (°C) | (J/g) | (°C) | Crystallinity degree (%) |
| | For the first heating run | | PLA/PEG | 49.3; 54.1 | — | — | 157.7 | 23.8 | 70.0 | 25.1 | | PLA/PEG/3CS | 49.2 | — | — | 157.4 | 27.9 | 73.1 | 29.8 | | PLA/PEG/6CS | 50.1; 60.8 | — | — | 157.0 | 24.9 | 77.8 | 26.6 | | PLA/PEG/0.5R | 53.6; 60.2 | 90.2 | 2.6 | 157.1 | 26.1 | 66.7 | 27.9 | | PLA/PEG/3CS/0.5R | 50.5; 60.8 | 92.5 | — | 157.3 | 26.4 | 70.7 | 28.2 | | PLA/PEG/6CS/0.5R | — | — | — | 157.9 | 26.2 | 80.5 | 27.9 | | For the second heating run | | PLA/PEG | — | 91.4 | 0.36 | 154.7 | 25.3 | — | 27.0 | | PLA/PEG/3CS | 53.8 | 91.6 | — | 153.8 | 27.8 | — | 29.7 | | PLA/PEG/6CS | 52.7 | — | — | 153.3 | 25.4 | — | 27.1 | | PLA/PEG/0.5R | — | 80.9 | 8.00 | 153.7 | 27.3 | — | 29.1 | | PLA/PEG/3CS/0.5R | 54.6 | 91.6 | 0.34 | 154.3 | 27.6 | — | 29.5 | | PLA/PEG/6CS/0.5R | 52.3 | — | — | 153.6 | 26.7 | — | 28.5 |
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Glass transition ( ), cold crystallization ( ), melting ( ), and crystallization ( ) temperatures; cold crystallization ( ) and melting ( ) enthalpies; crystallinity degree ( ). |
