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IIR document

Development of a fully organic microencapsulated phase change material from agricultural residues.

Number: 0039

Author(s) : ULRICH A., NIK ROO R., GUAYAQUIL SOSA J., MOHOSIN RANA MD., CLARKE M., DE LA HOZ SIEGLER H.

Summary

Encapsulating algae-derived phase change materials (PCMs) in cellulose shells results in fully organic microencapsulated PCMs suitable for addition to building materials. Wheat straw was used to obtain glucose – to feed algal growth – and cellulose – for the encapsulation of PCMs. Glucose was obtained from wheat straw via steam explosion and enzymatic hydrolysis. High yields of fatty acids were produced with the green microalgae Auxenochlorella protothecoides. Cellulose was isolated from wheat straw using alkali, bleaching, and acidic treatments. Additionally, microcrystalline cellulose (MCC) was treated with ionic liquid (IL) to reduce its crystallinity. PCM eutectic mixtures of fatty acids including capric, lauric, myristic, palmitic, and stearic acids, were formulated for room temperature applications. Both isolated cellulose and treated MCC were used for encapsulation. Oil-in-water emulsions were formed by mixing aqueously dispersed cellulose with the PCM. For IL treated cellulose, a crosslinking reaction stabilized the emulsion using crosslinker 1,6-hexanediol diacrylate (HDDA) and initiator azobisisobutyronitrile.

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Pages: 7 p.

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Details

  • Original title: Development of a fully organic microencapsulated phase change material from agricultural residues.
  • Record ID : 30032391
  • Languages: English
  • Subject: Technology
  • Source: 14th IIR Conference on Phase-Change Materials and Slurries for Refrigeration and Air Conditioning. Proceedings:  Paris France, May 29-31, 2024.
  • Publication date: 2024/05/31
  • DOI: http://dx.doi.org/10.18462/iir.pcm.2024.0039

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