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The porous polylactic acid matrix has been particularly developed as a scaffold in tissue engineering, drug loading, and wound dressing. However, the loading of active chemical compounds is challenging due to its highly hydrophobic nature and lack of functional groups for chemical bonding. Plasma treatment is a fast, heat and chemical-free solution to increase its hydrophilicity by oxidative functional groups and physical etching. In this study, a highly porous PLA scaffold was obtained by polyethylene glycol pore formation agent and treated by radiofrequency (RF) air plasma. Fucoidan from  Fucus vesiculosus ,  Macrocystis pyrifera , and  Undaria pinnatifida  were used to immobilize onto the activated porous PLA surface for use as medicated wound dressings. The chemical composition and morphology were investigated by FTIR, SEM-EDS analysis, and cytocompatibility assay was studied mouse embryonic fibroblast cells (NIH/3T3).

Cell response to PLA scaffolds functionalized with various seaweed polysaccharides