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Leakage-proof microencapsulation of phase change materials by emulsification with acetylated cellulose nanofibrils

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Shi, Xuetong
dc.contributor.author Yazdani, Maryam R.
dc.contributor.author Ajdary, Rubina
dc.contributor.author Rojas, Orlando J.
dc.date.accessioned 2020-10-30T12:44:56Z
dc.date.available 2020-10-30T12:44:56Z
dc.date.issued 2021-02-15
dc.identifier.citation Shi , X , Yazdani , M R , Ajdary , R & Rojas , O J 2021 , ' Leakage-proof microencapsulation of phase change materials by emulsification with acetylated cellulose nanofibrils ' , Carbohydrate Polymers , vol. 254 , 117279 . https://doi.org/10.1016/j.carbpol.2020.117279 en
dc.identifier.issn 0144-8617
dc.identifier.issn 1879-1344
dc.identifier.other PURE UUID: 3d79eda3-d657-4760-aa9d-9d26d19b6ee5
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/3d79eda3-d657-4760-aa9d-9d26d19b6ee5
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85094977287&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/52302694/CHEM_Shi_et_al_Leakage_proof_microencapsulation_Carbohydrate_Polymers.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/47313
dc.description | openaire: EC/H2020/788489/EU//BioELCell
dc.description.abstract We use acetylated cellulose nanofibrils (AcCNF) to stabilize transient emulsions with paraffin that becomes shape-stable and encapsulated phase change material (PCM) upon cooling. Rheology measurements confirm the gel behavior and colloidal stability of the solid suspensions. We study the effect of nanofiber content on PCM leakage upon melting and compare the results to those from unmodified CNF. The nanostructured cellulose promotes paraffin phase transition, which improves the efficiency of thermal energy exchange. The leakage-proof microcapsules display high energy absorption capacity (ΔHm = 173 J/g) at high PCM loading (up to 80 wt%), while effectively controlling the extent of supercooling. An excellent thermal stability is observed during at least 100 heating/cooling cycles. Degradation takes place at 291 °C, indicating good thermal stability. The high energy density and the effective shape and thermal stabilization of the AcCNF-encapsulated paraffin points to a sustainable solution for thermal energy storage and conversion. en
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher ELSEVIER SCI LTD
dc.relation info:eu-repo/grantAgreement/EC/H2020/788489/EU//BioELCell
dc.relation.ispartofseries Carbohydrate Polymers en
dc.rights openAccess en
dc.title Leakage-proof microencapsulation of phase change materials by emulsification with acetylated cellulose nanofibrils en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Bioproducts and Biosystems
dc.contributor.department Department of Mechanical Engineering
dc.contributor.department Bio-based Colloids and Materials
dc.identifier.urn URN:NBN:fi:aalto-202010306196
dc.identifier.doi 10.1016/j.carbpol.2020.117279
dc.date.embargo info:eu-repo/date/embargoEnd/2021-10-21

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