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Biocompatible and biodegradable bacterial polyesters, poly(hydroxyalkanoates) (PHAs), were combined with linalool, a well-known monoterpene, extracted from spice plants to design novel antibacterial materials. Their chemical association by a photo-induced thiol-ene reaction provided materials having both high mechanical resistance and flexibility. The influence of the nature of the crosslinking agent and the weight ratio of linalool on the thermo-mechanical performances were carefully evaluated. The elongation at break increases from 7% for the native PHA to 40% for PHA&#8722;linalool co-networks using a tetrafunctional cross-linking agent. The materials highlighted tremendous anti-adherence properties against <i>Escherichia coli</i> and <i>Staphylococcus aureus</i> by increasing linalool ratios. A significant decrease in antibacterial adhesion of 63% and 82% was observed for <i>E. coli </i>and <i>S. aureus</i>, respectively.