Preparation and phase change performance of Na2HPO4·12H2O@poly (lactic acid) capsules for thermal energy storage

doi:10.1016/j.cjche.2018.05.017

Chinese Journal of Chemical Engineering ›› 2019, Vol. 27 ›› Issue (3): 695-700.DOI: 10.1016/j.cjche.2018.05.017

• Materials and Product Engineering • Previous Articles Next Articles

Preparation and phase change performance of Na₂HPO₄·12H₂O@poly (lactic acid) capsules for thermal energy storage

Na Fan¹, Lang Chen¹, Guoyong Xie², Donghong Yin², Chak-Tong Au³, Shuangfeng Yin¹

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

Received:2018-04-15 Revised:2018-05-22 Online:2019-04-25 Published:2019-03-28
Contact: Shuangfeng Yin,E-mail address:sf_yin@hnu.edu.cn
Supported by:
Supported by the National Natural Science Foundation of China (21476065) and the China National Tobacco Corporation.

Preparation and phase change performance of Na₂HPO₄·12H₂O@poly (lactic acid) capsules for thermal energy storage

Na Fan¹, Lang Chen¹, Guoyong Xie², Donghong Yin², Chak-Tong Au³, Shuangfeng Yin¹

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

通讯作者: Shuangfeng Yin,E-mail address:sf_yin@hnu.edu.cn
基金资助:
Supported by the National Natural Science Foundation of China (21476065) and the China National Tobacco Corporation.

Abstract

Abstract: Micro-encapsulated phase-change materials (microPCMs) with Na₂HPO₄·12H₂O 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 microPCMs 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.

Key words: Micro-encapsulated, Phase-change materials, Na₂HPO₄·, 12H₂O, Coaxial needle, Poly(lactic acid), Thermal energy storage capsule

摘要： Micro-encapsulated phase-change materials (microPCMs) with Na₂HPO₄·12H₂O 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 microPCMs 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.

关键词: Micro-encapsulated, Phase-change materials, Na₂HPO₄·, 12H₂O, Coaxial needle, Poly(lactic acid), Thermal energy storage capsule

Na Fan, Lang Chen, Guoyong Xie, Donghong Yin, Chak-Tong Au, Shuangfeng Yin. Preparation and phase change performance of Na₂HPO₄·12H₂O@poly (lactic acid) capsules for thermal energy storage[J]. Chinese Journal of Chemical Engineering, 2019, 27(3): 695-700.

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Preparation and phase change performance of Na₂HPO₄·12H₂O@poly (lactic acid) capsules for thermal energy storage

Preparation and phase change performance of Na₂HPO₄·12H₂O@poly (lactic acid) capsules for thermal energy storage

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