Encapsulation of phase change materials with alginate modified by nanostructured sodium carbonate and silicate

A Correction to this article was published on 18 May 2020

This article has been updated

Abstract

The encapsulation of phase change materials (PCMs) as thermal energy storage materials is a big issue. PCM is usually encapsulated to avoid spillage, flammability and its reaction with the surrounding environment to improve its application. In the last decade, various methods have been employed and all kinds of microencapsulated PCM are produced. In this paper, we present a facile route to produce an encapsulated PCM with an organic and inorganic shell. The encapsulated phase change material (PCM) was prepared using a coaxial micro-fluidic system combined with an ionic cross-linking process. The alginate was used as the basic shell and a range of capsules was obtained by modifying the original shell using two inorganic components such as sodium carbonate and sodium silicate. Various samples, each with a different surrounding layer, were prepared by combining alginate calcium (Alg–Ca) as an organic shell with an inorganic component such as alginate calcium carbonate (Alg–CaCO3) and alginate calcium silicate (Alg–CaSiO3). In these experimental works, we have investigated the compatibility and the stability of capsules modified with the inorganic component. The scanning electron microscopy (SEM) technique and optical microscopy were utilized to study the capsule morphology. The chemical composition of the shell was evaluated by Fourier transform infrared spectroscopy (ATR-FTIR), thermogravimetry analysis and SEM coupled with the EDX analysis, and the capsule stability was estimated under an accelerated thermal cycling.

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Change history

  • 18 May 2020

    The article listed above was initially published with typo error in first author name.

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Correspondence to Djamal Zerrouki.

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The original version of this article was revised to correct the first author name.

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Miloudi, R., Zerrouki, D. Encapsulation of phase change materials with alginate modified by nanostructured sodium carbonate and silicate. Iran Polym J 29, 543–550 (2020). https://doi.org/10.1007/s13726-020-00819-3

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Keywords

  • Microcapsule
  • Phase change materials
  • Modified alginate
  • Sodium silicate
  • Sodium carbonate