Enhanced printability of polypropylene sheets via Ar and Ar-N2 plasma treatment using the microwave atmospheric plasma pen (MAPP) - Centeno, Aren Renz Y.; Rosario, Leo Mendel D.; Ting, Julie Anne S.; Lee, Henry V.; Ramos, Henry J.; Tumlos, Roy B. (Proceedings of the Samahang Pisika ng Pilipinas, 2014)