Quartz Enhanced Conductance Spectroscopy for Polymer Nano-Mechanical Thermal Analysis
A fast and highly sensitive polymer nano-mechanical thermal analysis method for determining the melting temperature (<i>T<sub>m</sub></i>) of polymer microwires was proposed. In this method, a small-size, low-cost quartz tuning fork was used as a piezoelectric transducer to a...
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MDPI AG
2020-07-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/14/4954 |
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| author | Shangzhi Li Bo Sun Zhijin Shang Biao Li Ruyue Cui Hongpeng Wu Lei Dong |
| author_facet | Shangzhi Li Bo Sun Zhijin Shang Biao Li Ruyue Cui Hongpeng Wu Lei Dong |
| author_sort | Shangzhi Li |
| collection | DOAJ |
| description | A fast and highly sensitive polymer nano-mechanical thermal analysis method for determining the melting temperature (<i>T<sub>m</sub></i>) of polymer microwires was proposed. In this method, a small-size, low-cost quartz tuning fork was used as a piezoelectric transducer to analyze the thermodynamics of polymer microwires at the nanogram level without changing its own properties. Due to the thin wire sample, which has a length of 1.2 mm and a diameter of ~5 µm, which is bridged across the prongs of the tuning fork, the nanogram-level sample greatly reduces the thermal equilibrium time for the measurement, resulting in a fast analysis for the melting temperature of the polymer sample. Compared with the traditional method, the analysis method based on the quartz enhanced conductivity spectrum (QECS) does not require annealing before measurement, which is an essential process for conventional thermal analysis to reduce the hardness, refine the grain, and eliminate the residual stress. In this work, the melting temperatures of three of the most commonly used polymers, namely polymers polymethyl methacrylate, high-density polyethylene, and disproportionated rosin, were obtained under the temperature from room temperature to >180 °C, proving the QECS method to be a useful tool for nano-mechanical thermal analysis. |
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| id | doaj.art-3263c7da57f9424b8c2bf7f80e1574b2 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T18:22:32Z |
| publishDate | 2020-07-01 |
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| spelling | doaj.art-3263c7da57f9424b8c2bf7f80e1574b22023-11-20T07:13:05ZengMDPI AGApplied Sciences2076-34172020-07-011014495410.3390/app10144954Quartz Enhanced Conductance Spectroscopy for Polymer Nano-Mechanical Thermal AnalysisShangzhi Li0Bo Sun1Zhijin Shang2Biao Li3Ruyue Cui4Hongpeng Wu5Lei Dong6State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, ChinaState Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, ChinaState Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, ChinaState Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, ChinaState Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, ChinaState Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, ChinaState Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, ChinaA fast and highly sensitive polymer nano-mechanical thermal analysis method for determining the melting temperature (<i>T<sub>m</sub></i>) of polymer microwires was proposed. In this method, a small-size, low-cost quartz tuning fork was used as a piezoelectric transducer to analyze the thermodynamics of polymer microwires at the nanogram level without changing its own properties. Due to the thin wire sample, which has a length of 1.2 mm and a diameter of ~5 µm, which is bridged across the prongs of the tuning fork, the nanogram-level sample greatly reduces the thermal equilibrium time for the measurement, resulting in a fast analysis for the melting temperature of the polymer sample. Compared with the traditional method, the analysis method based on the quartz enhanced conductivity spectrum (QECS) does not require annealing before measurement, which is an essential process for conventional thermal analysis to reduce the hardness, refine the grain, and eliminate the residual stress. In this work, the melting temperatures of three of the most commonly used polymers, namely polymers polymethyl methacrylate, high-density polyethylene, and disproportionated rosin, were obtained under the temperature from room temperature to >180 °C, proving the QECS method to be a useful tool for nano-mechanical thermal analysis.https://www.mdpi.com/2076-3417/10/14/4954quartz tuning forkpolymer microwiresthermoanalysismelting temperature |
| spellingShingle | Shangzhi Li Bo Sun Zhijin Shang Biao Li Ruyue Cui Hongpeng Wu Lei Dong Quartz Enhanced Conductance Spectroscopy for Polymer Nano-Mechanical Thermal Analysis Applied Sciences quartz tuning fork polymer microwires thermoanalysis melting temperature |
| title | Quartz Enhanced Conductance Spectroscopy for Polymer Nano-Mechanical Thermal Analysis |
| title_full | Quartz Enhanced Conductance Spectroscopy for Polymer Nano-Mechanical Thermal Analysis |
| title_fullStr | Quartz Enhanced Conductance Spectroscopy for Polymer Nano-Mechanical Thermal Analysis |
| title_full_unstemmed | Quartz Enhanced Conductance Spectroscopy for Polymer Nano-Mechanical Thermal Analysis |
| title_short | Quartz Enhanced Conductance Spectroscopy for Polymer Nano-Mechanical Thermal Analysis |
| title_sort | quartz enhanced conductance spectroscopy for polymer nano mechanical thermal analysis |
| topic | quartz tuning fork polymer microwires thermoanalysis melting temperature |
| url | https://www.mdpi.com/2076-3417/10/14/4954 |
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