A Plasma-Initiated Graft Polymerization of Methyl Methacrylate in the Presence of a Reverse ATRP Catalyst

作者：Shen, Zheng; Huang, Jie; Xia, Yichen; Zhu, Meng; Huang, Jian; Wang, Xiaolin

来源：Plasma Chemistry and Plasma Processing, 2019, 39(1): 293-309.

DOI：10.1007/s11090-018-9928-9

• Plasma-initiated polymerization
• Reverse atom transfer radical polymerization
• Graft polymerization
• Methyl methacrylate
• Surface modification

A plasma-initiated graft polymerization of methyl methacrylate (MMA) was carried out on the high-density polyethylene (HDPE) surface in the presence of the reverse atom transfer radical polymerization (RATRP) catalyst of CuCl2/2,2-bipyridine (bpy). The polymerization kinetics presented a linear relation with polymerization time. A well-defined PMMA brush was fabricated on the surface, evidenced by the linear growth of molecular weights with conversions and narrow polymer dispersity (D=1.31). Graft amounts were indicated to increase proportionally with the increase of conversions and molecular weights. Subsequently, a solvent-responsive surface was prepared by the block copolymerization of 2-hydroxyethyl methacrylate (HEMA) on the PMMA grafted surface. The polymerization is suggested to proceed via a RATRP mechanism, when plasma radicals could behave similarly as conventional radicals in forming dormant species.

• 出版日期2019-1
• 单位清华大学