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<p>This study presents cuttable and leak-proof cellulose-silk fibroin fibers containing discrete phase change material (PCM) cores for use in thermally responsive textiles. For warming applications, fibers loaded with n-hexadecane (C16; melting point of 19.7 °C; melting enthalpy of 48.1 J/g, corresponding to 21 wt% C16 in the fiber) were woven at 63 wt% with 37 wt% polyester yarn, yielding a fabric with 13 wt% C16. As shown with thermal camera, this C16 fabric significantly retarded heat loss and required more than three times longer to cool from 25 to 5 °C compared with a control fabric lacking PCM. For cooling applications, fibers loaded with n-octadecane (C18; melting point of 28.9 °C; melting enthalpy of 47.4 J/g, corresponding to 19 wt% C18 in the fiber) were similarly woven, producing a fabric with 12 wt% C18. At 35 °C, this C18 fabric delayed heat gain and took over three times longer to warm from 25 to 35 °C relative to the control fabric. These results confirm that PCM-loaded biopolymer fibers can act as effective materials for heat storage and temperature regulation, providing both warming and cooling functions.</p> Graphical abstract <p></p>

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Thermoregulating fabrics from cellulose-silk fibroin blend fibers with discrete phase change material loading

  • 期刊论文

  • 发表日期：

    2026年4月24日

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  • Nichakan Miengmern,
  • Warayuth Sajomsang,
  • Supason Wanichwecharungruang

摘要

This study presents cuttable and leak-proof cellulose-silk fibroin fibers containing discrete phase change material (PCM) cores for use in thermally responsive textiles. For warming applications, fibers loaded with n-hexadecane (C16; melting point of 19.7 °C; melting enthalpy of 48.1 J/g, corresponding to 21 wt% C16 in the fiber) were woven at 63 wt% with 37 wt% polyester yarn, yielding a fabric with 13 wt% C16. As shown with thermal camera, this C16 fabric significantly retarded heat loss and required more than three times longer to cool from 25 to 5 °C compared with a control fabric lacking PCM. For cooling applications, fibers loaded with n-octadecane (C18; melting point of 28.9 °C; melting enthalpy of 47.4 J/g, corresponding to 19 wt% C18 in the fiber) were similarly woven, producing a fabric with 12 wt% C18. At 35 °C, this C18 fabric delayed heat gain and took over three times longer to warm from 25 to 35 °C relative to the control fabric. These results confirm that PCM-loaded biopolymer fibers can act as effective materials for heat storage and temperature regulation, providing both warming and cooling functions.

Graphical abstract