Application of Nitrogen Piezoelectric Direct Discharge for Increase in Surface Free Energy of Polymers

The subject of this study is the application piezoelectric direct discharge (PDD) operated with nitrogen to control surface free energy (SFE) polymers. activation area, defined as area zone reaching SFE 58 mN/m for high-density polyethylene (HDPE) and poly (methyl methacrylate) (PMMA), characterized. For HDPE, was characterized a function distance from 1 16 mm, flow 5 20 SLM, treatment time 32 s. larger distances, where does not exceed mN/m, water contact angle evaluated. PDD typically factor 3 higher than air all other conditions same. A maximum static 15 cm2 reached. plasma lens panels made PMMA presented example.