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- Title
Improving Thermosolar Energy Storage with Biodegradable Polyester Nanocomposite Phase Change Materials.
- Authors
Silva, Valdilene O.; Lima, Thaíses B.S.; Aquino, Katia A.S.; da Silveira Filho, Elmo D.; Araujo, Elmo S.; Araujo, Patricia L. B.
- Abstract
Form‐stable solid‐liquid phase change materials (FSSL‐PCM) are capable of latent heat storage by absorbing thermal energy at constant temperature while undergoing solid‐liquid state transitions. We suggest new nanocomposites based on biodegradable polyesters Poly(ϵ‐caprolactone) (PCL), Poly(3‐hidroxybutyrate) (P‐3‐HB) or their blends with Poly(ethylene oxide) (PEO) embedded in the nanopores of thermally expanded natural graphite (EG) as FSSL‐PCM. These nanocomposites are submitted heating‐cooling cycles, in the fusion‐crystallization temperature range, without appreciable changes in thermal stability or latent heat storage capabilities, as assessed by Fourier Transform Infrared (FTIR) Spectroscopy Analysis, Thermogravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC). Such materials are suitable as PCMs used as storage media in solar energy‐based low‐medium temperature latent storage systems, for example, water‐heating systems, air‐heating units, solar greenhouses, among others.
- Subjects
HEAT storage; SOLAR energy; ETHYLENE oxide; THERMOGRAVIMETRY; DIFFERENTIAL scanning calorimetry
- Publication
Macromolecular Symposia, 2019, Vol 383, Issue 1, pN.PAG
- ISSN
1022-1360
- Publication type
Article
- DOI
10.1002/masy.201800047