Polymers, Journal Year: 2024, Volume and Issue: 16(22), P. 3213 - 3213
Published: Nov. 20, 2024
Wood, a renewable and abundant biomass resource, holds substantial promise as an encapsulation matrix for thermal energy storage (TES) applications involving phase change materials (PCMs). However, practical implementations often reveal disparity between observed theoretical enthalpy values of wood-derived composite PCMs (CPCMs). This study systematically explores the confinement behavior organic encapsulated in delignified balsa wood with morphology genetic nanostructure, characterized by specific surface area 25.4 ± 1.1 m2/g nanoscale pores averaging 2.2 nm. Detailed performance evaluations uncover distinct behaviors among various PCMs, influenced unique characteristics functional groups carbon chain lengths. The mechanism is primarily dictated host–guest interactions, which modulate PCM molecular mobility through hydrogen bonding spatial constraints imposed hierarchical pore structure wood. Notably, results demonstrate progressive enhancement nanoconfinement effects, evidencing transition from octadecane to stearic acid, further supported density theory (DFT) calculations. research significantly advances understanding mechanisms matrices, paving way development high-performance, shape-stabilized that are essential sustainable solutions.
Language: Английский