| Preparation and phase change performance of Na_2HPO_4·12H_2O@poly(lactic acid) capsules for thermal energy storage |
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| 作者姓名： | Na Fan Lang Chen Guoyong Xie Donghong Yin Chak-Tong Au Shuangfeng Yin |
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| 作者单位： | 1.State Key Laboratory of Chemo/Biosensing and Chemometrics, Provincial Hunan Key Laboratory for Cost-effective Utilization of Fossil Fuel Aimed at Reducing Carbon-dioxide Emissions, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China;2.Hunan Tobacco Industry Co., Ltd., Changsha 410019, China;3.College of Chemistry and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411104, China |
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| 基金项目： | Supported by the National Natural Science Foundation of China (21476065) and the China National Tobacco Corporation. |
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| 摘 要： | Micro-encapsulated phase-change materials(micro PCMs) with Na_2 HPO_4·12 H_2 O encapsulated in poly(lactic acid)(PLA) shell were prepared by a solvent evaporation–precipitation method that involves the use of a coaxial needle. The effects of PLA concentration, stirring speed, injection rate of core and shell solutions, and polyvinyl alcohol(PVA) concentration on phase change properties were investigated. The thermal properties of microP CMs were characterized by differential scanning calorimetry(DSC). The capsules prepared under the optimal conditions are about 2 mm in diameter and show a latent heat of up to 122.2 J·g~(-1).
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| 关 键 词： | Micro-encapsulated Phase-change materials Na2HPO4· 12H2O Coaxial needle Poly(lactic acid) Thermal energy storage capsule |
| 收稿时间： | 15 April 2018 |
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