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Structuring Polymer Brush Techniques – More Versatile and Quicker Ways

By Parul Gupta

Flame-retardant carpets, antimicrobial cutting devices, engineered surfaces add value to the items we utilize, offering additional layers of security, smoothing their operation, adding utility or preserving their quality. At UC Santa Barbara, the scientists of materials are searching out for exceedingly enhanced concepts with a technique of micro-scale surface chemical structuring that can not only diminish money and time spent in their manufacture but also add versatility to their creation.
 
 
 
In a novel study, the UCSB materials researchers illustrate a novel platform for engineering and functioning surfaces with structured polymer brushes. “It is an exceedingly robust tool that can be used for numerous purposes,” says Christian Pester, a postdoctoral scientist in the Craig Hawker Laboratory at UCSB.
 
On taking a close glance at some structured surfaces, you will witness that at the nanoscale and micro-scale, they are not empty and flat, but rather comprises infinitesimal elongated polymer molecules linked at one end to the surface. Such polymer brushes infuse the surface with numerous functions and properties. They can repel combat water bacteria from linking, augment drug delivery or attract other molecules.
 
Layering polymer brushes enable the combination of numerous functionalities.
With systematic stop-flow photo-patterning, the intermediary steps can be eradicated stated Pester. “Also, it is chemically much cleaner, because you are not iteratively accumulating the initiator,” he says. It implies that you are also considering related cleansing and washing steps.”
 
For achieving this feature, the substrate is surrounded in a stop=flow cell and a solution of streamed in. Irradiation with light can then begin the reaction. A unique photomask – necessarily a type of stencil – is situated on the top of the cell, hence enabling only little light-activated growth.
 
After the step of growth, the light is switched off; the primary solution is exhausted from the cell and a second one is shifted into functionalize the polymers. Since neither the substrate nor the mask has been shifted, just the molecules that have been exposed to light are functionalized and growth. Such basic steps may recur with variations in the reactants, the positions or light source of the photo-mask or substrate to generate polymer brush patterns in a singular uninterrupted process.
 
“We can also generate height and chemical gradients on the nanoscale,” says Pester. It features that are not just indirectly accessible with traditional techniques. The technology looks for the novel door to enhanced versatility in the development of polymer brushes with a look at industrial applications. Pester also states that the collaborative feature of UCSB study for this scientific introduction that is devoted to late Edward J. Kramer, professor and founder of the Material’s Research Lab. 
 
Conclusion – As per the experts, the thing that is cool about the project is that the UCSB shines in the association,” says Pester. Detailed study of this experiment was conducted by Kaila Mattson, Emre Discekici and Benjaporn Narupai from UCSB’s department of biochemistry and chemistry and of materials, David Bothman from the Department of Mechanical Engineering and Kenneth Lee.

Filed Under: News

 

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