Towards high performance semi-interpenetrating phase change materials networks via linear polyethylene glycol-based multimerization effect

Robust, Versatile Access to Quasi-Monodispersed Phase Change Sub-Microcapsules via Ab Initio Emulsion Polymerization

“…The thermal reliability of PCMCs was verified by comparing DSC curves (Figure 3h and Figures S16 and S17 in the Supporting Information) and XRD spectra (Figure 3i and Figures S18 and S19 in the Supporting Information) before and after 50 thermal cycles as well as shape stability (Figures S20−S22 in the Supporting Information) after thermal cycling with the previous literature. 1,9,30,35,39 The melting and freezing latent heat density (ΔH f ≈ΔH m ) of PCMCs are the almost same before and after thermal cycling, indicating that PCMCs exhibit an efficient reversible phase change process (Figure 3h and Figures S16 and S17 in the Supporting Information). The DSC curves of PCMCs with phase change cores not higher than 50 wt % before and after thermal cycling are basically consistent, and the changes of ΔH f and ΔH m are less than 14.6%, while PCMC-60%P-5%AA-OP had a little high change of ΔH f , reaching 26.8%, probably due to the thinning PS shell.…”

“…With the increasing consumption of fossil energy and environmental crisis, the effective use of fossil energy and the development of renewable energy such as solar energy, wind energy, and tidal energy have become more and more important and need further exploration. − The problems of energy intermittence, instability, and utilization efficiency limit their application fields. In order to reduce the consumption of traditional fossil energy, it has become an inevitable trend to develop the use of renewable energy and improve the efficiency of energy utilization. − Thermal energy storage is an excellent choice to achieve the above purpose.…”

Design of Sustainable Self‐Healing Phase Change Materials by Dynamic Semi‐Interpenetrating Network Structure

“…[25] Consequently, their enthalpy and enthalpy efficiency are enhanced, while ensuring non-leakage of the phase change component. [26,27] However, semi-IPN based SSPCMs cannot be self-healed due to the essence of traditional covalent crosslinking polymer network structure. [28] Fatty alcohols offer several benefits, including their sustainability, affordability, high enthalpy of phase change, and nontoxic, non-corrosive nature.…”

Engineering Polymeric Phase-Change Sub-Microcapsules with a High Encapsulation Fraction by Facile, Versatile Suspension Polymerization

“…With the depletion of nonrenewable energy, improving the efficiency of energy and increasing the utilization of sustainable energy have become the trend of future development. − In a wide variety of energy conversions, there is always a portion of heat that is lost in the conversion process. − A large amount of heat is inevitably lost in daily production and life, and about 90% of the global energy budget involves heat conversion. Besides, solar energy is also a sustainable source of thermal energy. ,, Storing thermal energy is a way of storing energy for efficient use of waste heat and solar heat. − Phase-change materials (PCMs) are used to release/absorb thermal energy by melting/crystallizing in a narrow temperature range, which is called latent heat. − PCMs have become one of the most promising methods of storing thermal energy because of their large energy storage density and thermostatic energy storage. , They have great potential applications in smart textiles, smart buildings, batteries, etc. − …”

“…Compared with traditional inorganic PCMs, organic solid–liquid PCMs have the advantages of a narrow phase-change temperature ( T pc ) interval, low subcooling, large energy storage density, and chemical stability, which have attracted much attention. , However, organic solid–liquid PCMs still have problems, such as easy leakage, limiting their potential applications. , In order to resolve the problem of leakage during the phase change, the following PCMs have been developed, such as form-stable PCMs, , solid–solid polymeric PCMs, ,, and microencapsulated PCMs. − Mixing the solid–liquid phase-change components with the polymeric supporting materials via noncovalent interactions can contribute to the formation of form-stable PCMs with an encapsulation fraction lower than 80%. ,, Solid–solid polymeric PCMs avoid the leakage of phase-change components by restricting the molecular chain movement ability by covalent bonding, which leads to a decrease in the latent heat efficiency (η) and latent heat density (Δ H ). , By encapsulating the phase-change core (PCC) in the shell material, microencapsulated PCMs or phase-change microcapsules can effectively improve the thermal conduction coefficient, specific surface area, and η of PCMs, and these advantages endow them with great application prospects in smart furniture, smart fibers, and solar energy storage and utilization. , …”