We will discuss the formation and unique properties of a new class of dendrimeric polymer particles (DPPs). The DPPs are fabricated by an efficient and scalable process for massive liquid-based synthesis of nanomaterials. A variety of polymers can be readily made into nanofibrillated particles. The DPPs are hierarchically self-similar, with branched nanofiber corona spreading out all directions. The biomimetic similarity of their structure to the gecko lizards’ setae endows DPPs with excellent adhesion on almost any substrate. Our results demonstrate that this strong adhesion are attributed to the contact splitting and van der Waals interactions of their nanofibrous structures. This new class of polymeric particles opens new ways to make strong non-covalent binding coatings and new types of dry adhesives. In addition, the DPPs exhibit high excluded volume induced from their hierarchical structure. They build a stable three dimensional network leading to a gel-like behavior at as low as 1-2 vol.% of DPPs in various liquids. These particles can find a broad range of industrial applications such as components of gelation agents and coating formulations.

New class of branched and nanofibrous dendrimeric polymer particles with extraordinary adhesive and structure-building capabilities

253rd National Meeting (2017)

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