Polymer Brushes Grafted from Clay Nanoparticles Adsorbed on a Planar Substrate by Free Radical Surface-Initiated Polymerization

Langmuir ◽  
2003 ◽  
Vol 19 (3) ◽  
pp. 916-923 ◽  
Author(s):  
Xiaowu Fan ◽  
Chuanjun Xia ◽  
Timothy Fulghum ◽  
Mi-Kyoung Park ◽  
Jason Locklin ◽  
...  
Keyword(s):  
Free Radical ◽  
Polymer Brushes ◽  
Clay Nanoparticles ◽  
Surface Initiated Polymerization ◽  
Planar Substrate

Fabrication of Stimulus-Responsive Polymeric Nanostructures by Proximal Probes

2002 ◽  
Vol 735 ◽  
Author(s):  
Sang-Jung Ahn ◽  
Woo-Kjung Lee ◽  
Stefan Zauscher
Keyword(s):  
Free Radical ◽  
Radical Polymerization ◽  
Polymer Brushes ◽  
Polymer Brush ◽  
Free Radical Polymerization ◽  
Surface Initiated Polymerization ◽  
Stimulus Responsive ◽  
Responsive Polymer ◽  
Assembled Monolayers ◽  
Detection Of Biomolecules

ABSTRACTThe triggered control of interfacial properties on the nanometer scale holds significant promise for actuation in bio-nanotechnology applications where polymeric actuators may manipulate the transport, separation, and detection of biomolecules. To fabricate patterned, stimulus-responsive polymer brushes we have developed several methods that combine surface initiated polymerization (SIP) with dip-pen nanolithography (DPN). Surface-confined, stimulus-responsive polymer brush nanopatterns were fabricated by amplification of DPN patterned, self-assembled monolayers of 16-mercaptohexadecanoic acid on gold surfaces by SIP of N-isopropylacrylamide (NIPAAm). While free radical polymerization yielded only short polymer brushes (DP<50), atom transfer free radical polymerization (ATRP) produced thick, uniform polymer brushes. For free radical polymerization the thickness of the polymer brush layer is a function of the lateral feature size and the initiator density and is maximal at pattern boundaries.

Self-Assembled Nanostructures of Block Copolymers on Random Copolymer Brush

2007 ◽  
Vol 124-126 ◽  
pp. 579-582
Author(s):  
Bong Hoon Kim ◽  
Chong Min Koo ◽  
Seong Jun Jeong ◽  
Dong Ok Shin ◽  
Sang Ouk Kim
Keyword(s):  
Free Radical ◽  
Polymer Brushes ◽  
Silicon Oxide ◽  
Random Copolymer ◽  
Hydroxyl Group ◽  
Silicon Oxide Layer ◽  
Molecular Weights ◽  
A Chain ◽  
Copolymer Brush ◽  
End Group

We synthesized the polymer brushes by conventional free radical polymerization and investigated the morphology evolution of block copolymer nanostructure on the brush treated surfaces. Our simple approach utilized a functionalized free radical initiator to add hydroxyl group to a chain end and an excess amount of a chain transfer agent to control the molecular weights of the brushes. The synthesized polymer brushes had narrow molecular weight distribution as well as hydroxyl end group and were successfully grafted onto silicon oxide layer by simple spin-coating and annealing process. The orientation of poly(styrene-block-methyl methacrylate)s (PS-b- PMMAs) coated on the brush grafted surface was finely controlled by the surface modification by polymer brushes.

Preparing polymer brushes on polytetrafluoroethylene films by free radical polymerization

2006 ◽  
Vol 253 (2) ◽  
pp. 983-988 ◽  
Author(s):  
Wei Sun ◽  
Yiwang Chen ◽  
Qilan Deng ◽  
Lie Chen ◽  
Lang Zhou
Keyword(s):  
Free Radical ◽  
Radical Polymerization ◽  
Polymer Brushes ◽  
Free Radical Polymerization

Influence of Surface-Initiated Polymerization Rate and Initiator Density on the Properties of Polymer Brushes

2009 ◽  
Vol 42 (7) ◽  
pp. 2863-2872 ◽  
Author(s):  
Hong Liu ◽  
Min Li ◽  
Zhong-Yuan Lu ◽  
Zuo-Guang Zhang ◽  
Chia-Chung Sun
Keyword(s):  
Polymer Brushes ◽  
Polymerization Rate ◽  
Surface Initiated Polymerization
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