Source abstract
Abstract
Abstract Microencapsulated materials are receiving broad attention for applications as diverse as energy storage and conversion, biomedicine, self‐healing materials, and electronics. Here, a general microfluidic approach is presented to prepare phase‐change material‐infilled microcapsules with unique thermal and mechanical properties. Aqueous sodium acetate solutions are encapsulated by an acrylate‐based shell via a microfluidic method. To understand and optimize microcapsule formation, flow behavior during the encapsulation is numerically simulated. When the microcapsules are embedded in an acrylate matrix (same composition as the shell wall material), the microcapsules exhibit a significant 46.6 ºC difference between the crystallization and melting temperatures as determined by differential scanning calorimetry at a rate of 10 ºC per min. Variable temperature dynamic mechanical analysis over the range of 50 to ‐90 ºC reveals up to a 50% change in the composite's elastic modulus at a given temperature, depending on if the sample is being cooled or heated, due to significant undercooling of the core material crystallization as shown by X‐ray diffraction.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Polymer composites and self-healing · Phase Change Materials Research · Advanced Sensor and Energy Harvesting Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory of Functional Molecular Solids of the Ministry of Education Anhui Laboratory of Molecule‐Based Materials Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education Institutes College of Chemistry and Materials Science Anhui Normal University Wuhu Anhui 241000 P. R. China
Department of Materials Science and Engineering Materials Research Laboratory Beckman Institute for Advanced Science and Technology University of Illinois at Urbana‐Champaign Urbana IL 61801 USA
Department of Modern Mechanics University of Science and Technology of China Hefei Anhui 230026 P. R. China
Key Laboratory for Thin Film and Micro Fabrication of the Ministry of Education Department of Micro/Nano Electronics Shanghai Jiao Tong University Shanghai 200240 P. R. China
Funding
University of Illinois · U.S. Department of Defense · U.S. Army · National Natural Science Foundation of China
References (38)
Show source-provided references
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