Preparation of phase change material-montmorillonite composites suitable for thermal energy storage

Nihal Sarier*, Emel Onder, Serap Ozay, Yilmaz Ozkilic

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

77 Citations (Scopus)


A new type of organoclay composite (PMMT) with good heat storage and release capacity was produced by intercalating n-hexadecane with Na-montmorillonite (Na-MMT) in a surfactant-assisted medium. The expansion of Na-MMT galleries by a Na salt of 4-dodecylbenzene sulfonic acid (SDS) solution prior to the intercalation of n-hexadecane enhanced the process. In the XRD analysis, expansions of the d spacings in the (0 0 1) plane were observed in all PMMT samples, indicating that the intercalation of n-hexadecane in the galleries of Na-MMT was successfully achieved. The most successful PMMT sample, prepared by intercalating 9 mmol n-hexadecane per gram of Na-MMT, displayed a high heat capacity (126 J g-1) and good thermal durability. The sample also had a higher thermal conductivity compared to pure n-hexadecane samples. The manufacture of the PCM-clay composites by the method of surfactant-mediated intercalation of n-hexadecane into Na-MMT is recommended to enhance the thermal performance of different thermal storage materials.

Original languageEnglish
Pages (from-to)39-46
Number of pages8
JournalThermochimica Acta
Issue number1-2
Publication statusPublished - 20 Sept 2011


We would like to thank The Scientific & Technical Research Council of Turkey (TUBITAK) for the financial support of this study (project code: TUBITAK 107M126). We also acknowledge Istanbul Kultur University for their financial support.

FundersFunder number
Scientific & Technical Research Council of Turkey
T.C. İstanbul Kültür Üniversitesi


    • DSC
    • Intercalation
    • Montmorillonite
    • PCM
    • Thermal property
    • XRD


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