Effect of Composition on the Crystallization, Water Absorption, and Biodegradation of Poly(<i>ε</i>-caprolactam<i>-co-ε</i>-caprolactone) Copolymers
Poly(ester amide)s have aroused extensive research interest due to the combination of the degradability of polyester and the higher mechanical properties of polyamide. In this work, a series of poly(<i>ε</i>-caprolactam<i>-co-ε</i>-caprolactone) (P(CLA<i>-co-</i>C...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-10-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/12/11/2488 |
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| author | Yuanyuan Dou Xinyu Mu Yuting Chen Zhenbo Ning Zhihua Gan Ni Jiang |
| author_facet | Yuanyuan Dou Xinyu Mu Yuting Chen Zhenbo Ning Zhihua Gan Ni Jiang |
| author_sort | Yuanyuan Dou |
| collection | DOAJ |
| description | Poly(ester amide)s have aroused extensive research interest due to the combination of the degradability of polyester and the higher mechanical properties of polyamide. In this work, a series of poly(<i>ε</i>-caprolactam<i>-co-ε</i>-caprolactone) (P(CLA<i>-co-</i>CLO)) copolymers with different compositions were synthesized by anionic copolymerization. The structure, crystallization behavior, water absorption, and biodegradation behavior of these copolymers were investigated by means of nuclear magnetic resonance (NMR), Fourier transform infrared (FTIR), differential scanning calorimetry (DSC), wide-angle X-ray diffraction (WAXD), and polarized optical micrographs (POM). The results indicated that the composition of P(CLA<i>-co-</i>CLO) copolymers can be adjusted by the molar feed ratio. The PCL blocks decreased the crystallization rate of PA6 blocks but had little effect on the melting behavior of PA6, while the crystallized PA6 acted as a heterogeneous nucleating agent and greatly improved the crystallization rate of PCL. Moreover, the introduction of PCL blocks greatly reduced the water absorption of P(CLA<i>-co-</i>CLO) copolymers and endow them a certain degree of degradability. |
| first_indexed | 2024-03-10T15:18:26Z |
| format | Article |
| id | doaj.art-0cf0613ac436446ea8daac3e2f386f49 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T15:18:26Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-0cf0613ac436446ea8daac3e2f386f492023-11-20T18:38:40ZengMDPI AGPolymers2073-43602020-10-011211248810.3390/polym12112488Effect of Composition on the Crystallization, Water Absorption, and Biodegradation of Poly(<i>ε</i>-caprolactam<i>-co-ε</i>-caprolactone) CopolymersYuanyuan Dou0Xinyu Mu1Yuting Chen2Zhenbo Ning3Zhihua Gan4Ni Jiang5State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomaterials, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, ChinaState Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomaterials, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, ChinaState Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomaterials, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, ChinaState Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomaterials, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, ChinaState Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomaterials, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, ChinaState Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomaterials, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, ChinaPoly(ester amide)s have aroused extensive research interest due to the combination of the degradability of polyester and the higher mechanical properties of polyamide. In this work, a series of poly(<i>ε</i>-caprolactam<i>-co-ε</i>-caprolactone) (P(CLA<i>-co-</i>CLO)) copolymers with different compositions were synthesized by anionic copolymerization. The structure, crystallization behavior, water absorption, and biodegradation behavior of these copolymers were investigated by means of nuclear magnetic resonance (NMR), Fourier transform infrared (FTIR), differential scanning calorimetry (DSC), wide-angle X-ray diffraction (WAXD), and polarized optical micrographs (POM). The results indicated that the composition of P(CLA<i>-co-</i>CLO) copolymers can be adjusted by the molar feed ratio. The PCL blocks decreased the crystallization rate of PA6 blocks but had little effect on the melting behavior of PA6, while the crystallized PA6 acted as a heterogeneous nucleating agent and greatly improved the crystallization rate of PCL. Moreover, the introduction of PCL blocks greatly reduced the water absorption of P(CLA<i>-co-</i>CLO) copolymers and endow them a certain degree of degradability.https://www.mdpi.com/2073-4360/12/11/2488poly(ester amide)compositioncrystallizationbiodegradation |
| spellingShingle | Yuanyuan Dou Xinyu Mu Yuting Chen Zhenbo Ning Zhihua Gan Ni Jiang Effect of Composition on the Crystallization, Water Absorption, and Biodegradation of Poly(<i>ε</i>-caprolactam<i>-co-ε</i>-caprolactone) Copolymers Polymers poly(ester amide) composition crystallization biodegradation |
| title | Effect of Composition on the Crystallization, Water Absorption, and Biodegradation of Poly(<i>ε</i>-caprolactam<i>-co-ε</i>-caprolactone) Copolymers |
| title_full | Effect of Composition on the Crystallization, Water Absorption, and Biodegradation of Poly(<i>ε</i>-caprolactam<i>-co-ε</i>-caprolactone) Copolymers |
| title_fullStr | Effect of Composition on the Crystallization, Water Absorption, and Biodegradation of Poly(<i>ε</i>-caprolactam<i>-co-ε</i>-caprolactone) Copolymers |
| title_full_unstemmed | Effect of Composition on the Crystallization, Water Absorption, and Biodegradation of Poly(<i>ε</i>-caprolactam<i>-co-ε</i>-caprolactone) Copolymers |
| title_short | Effect of Composition on the Crystallization, Water Absorption, and Biodegradation of Poly(<i>ε</i>-caprolactam<i>-co-ε</i>-caprolactone) Copolymers |
| title_sort | effect of composition on the crystallization water absorption and biodegradation of poly i ε i caprolactam i co ε i caprolactone copolymers |
| topic | poly(ester amide) composition crystallization biodegradation |
| url | https://www.mdpi.com/2073-4360/12/11/2488 |
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