Endang Ciptawati, Hayato Takase, Nozomi Morishita Watanabe, Yukihiro Okamoto, Hadi Nur, Hiroshi Umakoshi
Phospholipid-coated chitosan cryogel particles exhibit enhanced mechanical properties, with improved elasticity and durability under compression and release cycles. Among the two coating methods studied, the direct incubation in the liposome solution method resulted in a more effective and higher phospholipid distribution than the solvent evaporation method. Scanning electron microscopy (SEM) analysis confirmed that phospholipid coating smooths the surface and cross-section pores, while the energy dispersive X-ray (EDX) analysis indicated a higher phosphorus atom presence in coated chitosan cryogels coated via incubation. The DPPC (dipalmitoylphosphatidylcholine) membranes facilitate strong interaction with the chitosan matrix, substantiated by the shift of transition temperature (Tm) on differential scanning calorimetry (DSC) results, leading to increased mechanical resilience. Coated chitosan cryogels maintained their structure after five compression and release cycles, compared to the uncoated chitosan cryogels, which deformed irreversibly after four cycles. Furthermore, the surface functionalization of coated chitosan cryogels highlights the significance of coating techniques in optimizing the mechanical performance of cryogels, making them suitable for advanced industrial and biomedical applications. © The Polymer Society, Taipei 2025.
Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama-cho, Osaka, Toyonaka, 560-8531, Japan; Department of Chemistry, Faculty of Mathematics and Natural Science, Universitas Negeri Malang, Jl. Semarang 5, Malang, 65145, Indonesia; Department of Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima, 890-0065, Japan
