Isothermal Crystallization Kinetics of Poly(ethylene oxide)/Poly(ethylene glycol)-<i>g</i>-silica Nanocomposites
In this work, the crystallization kinetics of poly(ethylene oxide) (PEO) matrix included with poly(ethylene glycol) (PEG) grafted silica (PEG-<i>g</i>-SiO<sub>2</sub>) nanoparticles and bare SiO<sub>2</sub> were systematically investigated by differential scanning...
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| Format: | Article |
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MDPI AG
2021-02-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/13/4/648 |
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| author | Xiangning Wen Yunlan Su Shaofan Li Weilong Ju Dujin Wang |
| author_facet | Xiangning Wen Yunlan Su Shaofan Li Weilong Ju Dujin Wang |
| author_sort | Xiangning Wen |
| collection | DOAJ |
| description | In this work, the crystallization kinetics of poly(ethylene oxide) (PEO) matrix included with poly(ethylene glycol) (PEG) grafted silica (PEG-<i>g</i>-SiO<sub>2</sub>) nanoparticles and bare SiO<sub>2</sub> were systematically investigated by differential scanning calorimetry (DSC) and polarized light optical microscopy (PLOM) method. PEG-<i>g</i>-SiO<sub>2</sub> can significantly increase the crystallinity and crystallization temperature of PEO matrix under the non-isothermal crystallization process. Pronounced effects of PEG-<i>g</i>-SiO<sub>2</sub> on the crystalline morphology and crystallization rate of PEO were further characterized by employing spherulitic morphological observation and isothermal crystallization kinetics analysis. In contrast to the bare SiO<sub>2</sub>, PEG-<i>g</i>-SiO<sub>2</sub> can be well dispersed in PEO matrix at low <i>P</i>/<i>N</i> (<i>P</i>: Molecular weight of matrix chains, <i>N</i>: Molecular weight of grafted chains), which is a key factor to enhance the primary nucleation rate. In particular, we found that the addition of PEG-<i>g</i>-SiO<sub>2</sub> slows the spherulitic growth fronts compared to the neat PEO. It is speculated that the interfacial structure of the grafted PEG plays a key role in the formation of nuclei sites, thus ultimately determines the crystallization behavior of PEO PNCs and enhances the overall crystallization rate of the PEO nanocomposites. |
| first_indexed | 2024-03-09T00:38:28Z |
| format | Article |
| id | doaj.art-6748cefe2c164808963620f8b45dfe91 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T00:38:28Z |
| publishDate | 2021-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-6748cefe2c164808963620f8b45dfe912023-12-11T17:58:39ZengMDPI AGPolymers2073-43602021-02-0113464810.3390/polym13040648Isothermal Crystallization Kinetics of Poly(ethylene oxide)/Poly(ethylene glycol)-<i>g</i>-silica NanocompositesXiangning Wen0Yunlan Su1Shaofan Li2Weilong Ju3Dujin Wang4Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, ChinaKey Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, ChinaKey Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, ChinaKey Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, ChinaKey Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, ChinaIn this work, the crystallization kinetics of poly(ethylene oxide) (PEO) matrix included with poly(ethylene glycol) (PEG) grafted silica (PEG-<i>g</i>-SiO<sub>2</sub>) nanoparticles and bare SiO<sub>2</sub> were systematically investigated by differential scanning calorimetry (DSC) and polarized light optical microscopy (PLOM) method. PEG-<i>g</i>-SiO<sub>2</sub> can significantly increase the crystallinity and crystallization temperature of PEO matrix under the non-isothermal crystallization process. Pronounced effects of PEG-<i>g</i>-SiO<sub>2</sub> on the crystalline morphology and crystallization rate of PEO were further characterized by employing spherulitic morphological observation and isothermal crystallization kinetics analysis. In contrast to the bare SiO<sub>2</sub>, PEG-<i>g</i>-SiO<sub>2</sub> can be well dispersed in PEO matrix at low <i>P</i>/<i>N</i> (<i>P</i>: Molecular weight of matrix chains, <i>N</i>: Molecular weight of grafted chains), which is a key factor to enhance the primary nucleation rate. In particular, we found that the addition of PEG-<i>g</i>-SiO<sub>2</sub> slows the spherulitic growth fronts compared to the neat PEO. It is speculated that the interfacial structure of the grafted PEG plays a key role in the formation of nuclei sites, thus ultimately determines the crystallization behavior of PEO PNCs and enhances the overall crystallization rate of the PEO nanocomposites.https://www.mdpi.com/2073-4360/13/4/648poly(ethylene oxide)nanocompositesgrafted silica nanoparticlesisothermal crystallization kinetics |
| spellingShingle | Xiangning Wen Yunlan Su Shaofan Li Weilong Ju Dujin Wang Isothermal Crystallization Kinetics of Poly(ethylene oxide)/Poly(ethylene glycol)-<i>g</i>-silica Nanocomposites Polymers poly(ethylene oxide) nanocomposites grafted silica nanoparticles isothermal crystallization kinetics |
| title | Isothermal Crystallization Kinetics of Poly(ethylene oxide)/Poly(ethylene glycol)-<i>g</i>-silica Nanocomposites |
| title_full | Isothermal Crystallization Kinetics of Poly(ethylene oxide)/Poly(ethylene glycol)-<i>g</i>-silica Nanocomposites |
| title_fullStr | Isothermal Crystallization Kinetics of Poly(ethylene oxide)/Poly(ethylene glycol)-<i>g</i>-silica Nanocomposites |
| title_full_unstemmed | Isothermal Crystallization Kinetics of Poly(ethylene oxide)/Poly(ethylene glycol)-<i>g</i>-silica Nanocomposites |
| title_short | Isothermal Crystallization Kinetics of Poly(ethylene oxide)/Poly(ethylene glycol)-<i>g</i>-silica Nanocomposites |
| title_sort | isothermal crystallization kinetics of poly ethylene oxide poly ethylene glycol i g i silica nanocomposites |
| topic | poly(ethylene oxide) nanocomposites grafted silica nanoparticles isothermal crystallization kinetics |
| url | https://www.mdpi.com/2073-4360/13/4/648 |
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