Superhydrophobic poly(dimethylsiloxane) via surface-initiated   polymerization with ultralow initiator density

doi:10.1021/ma800784z

CORC > 北京大学 > 工学院

	Superhydrophobic poly(dimethylsiloxane) via surface-initiated polymerization with ultralow initiator density
	Qian, Tongcheng ; Li, Yuefang ; Wu, Yuanzi ; Zheng, Bo ; Ma, Hongwei
刊名	macromolecules
	2008
关键词	TRANSFER RADICAL POLYMERIZATION MICROFLUIDICS WETTABILITY MONOLAYERS COATINGS
DOI	10.1021/ma800784z
英文摘要	We reported herein a facile method that utilized surface-initiated Polymerization (SIP) alone to produce superhydrophobic poly(dimethylsiloxane) (PDMS) Surfaces, either flat or as the wall of microfluidic channels. In this so-called relayed SIP strategy, the first SIP was conducted from the initiator integrated PDMS (iPDMS) of varied initiator density, i.e., from 0.5iPDMS to 10(-6)iPDMS, corresponding to surface density of 3.7 x 10(-2) and 1.0 x 10(-9) chains nm(-2), respectively, an estimation based on uniform distribution of feed initiator molecules. The monomer in use was oligo(ethylene glycol) methacrylate, resulting in poly(OEGMA) chains with terminal hydroxyl groups. The iPDMS Substrates were then treated with bromoisobutyryl bromide as the initiation moiety, followed by the second SIP using monomer 1H,1H,2H,2H-perfluorodecyl methacrylate (FMA). The resulting surface was covered with polymeric trees that had poly(FMA) Lis the branches and poly(OEGMA) as the central trunk. Only the iPDMS of ultralow initiator density, i.e., 10(-3)iPDMS (1.0 x 10(-5) chains nm(-2)), produced a superhydrophobic surface with a contact angle of water at 155 degrees. The impact of SIP duration and monomer in use was also studied. The results demonstrated that SIP from Substrates of ultralow initiator density could also produce functional surfaces. Furthermore, because this method is compatible with the in situ modification of microfluidic channels, it also provides new opportunities for the field of microfluidics.; Polymer Science; SCI(E); EI; 25; ARTICLE; 18; 6641-6645; 41
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/155006]
专题	工学院
推荐引用方式 GB/T 7714	Qian, Tongcheng,Li, Yuefang,Wu, Yuanzi,et al. Superhydrophobic poly(dimethylsiloxane) via surface-initiated polymerization with ultralow initiator density[J]. macromolecules,2008.
APA	Qian, Tongcheng,Li, Yuefang,Wu, Yuanzi,Zheng, Bo,&Ma, Hongwei.(2008).Superhydrophobic poly(dimethylsiloxane) via surface-initiated polymerization with ultralow initiator density.macromolecules.
MLA	Qian, Tongcheng,et al."Superhydrophobic poly(dimethylsiloxane) via surface-initiated polymerization with ultralow initiator density".macromolecules (2008).