Polymer Microstructures
Polymer Microstructures - Related Videos
09:23
Fabrication, Densification, and Replica Molding of 3D Carbon Nanotube Microstructures
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Cited by 7 •
2012
We present methods for fabrication of patterned microstructures of vertically aligned carbon nanotubes (CNTs), and their use as master molds for production of polymer microstructures with organized nanoscale surface texture. The CNT forests are densified by condensation of solvent onto the substrate, which significantly increases their packing density and enables self-directed formation of 3D shapes.
02:34
Polymers
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2020
The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the properties that they exhibit. Additionally,...
09:24
Micropunching Lithography for Generating Micro- and Submicron-patterns on Polymer Substrates
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Cited by 1 •
2012
A micropunching lithography approach is developed to generate micro- and submicron-patterns on top, sidewall and bottom surfaces of polymer substrates. It overcomes the obstacles of patterning conducting polymers and generating sidewall patterns. This method allows rapid fabrication of multiple features and is free of aggressive chemistry.
14:24
Manufacturing of Three-dimensionally Microstructured Nanocomposites through Microfluidic Infiltration
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Cited by 4 •
2014
Three-dimensional (3D) microstructured composite beams are fabricated through the directed and localized infiltration of nanocomposites into 3D porous microfluidic networks. The flexibility of this manufacturing method enables the utilization of different thermosetting materials and nanofillers in order to achieve a variety of functional 3D reinforced nanocomposite macroscopic products.
05:49
Laser Micromachining for Polymer Surface Topography Design
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2025
A method for imposing surface topography of light-absorbing composite polymer materials, particularly magnetoactive elastomers (MAEs), by using laser micromachining is presented. This method enables large flexibility in topographical designs and rapid prototyping. An example of structuring MAE surfaces, characterization, and their response to the external magnetic field is demonstrated.
FAQs
Chain architecture, including branching and molecular arrangement, influences how efficiently chains pack together. Tacticity, the placement pattern of chemical groups along a chain, also affects regularity and the ability of chains to organize. These structural differences can promote or limit crystallization and molecular orientation, helping explain why polymers with related chemistry may show different stiffness, flexibility, strength, or thermal stability.
Crystalline regions provide more ordered chain packing, while amorphous domains contain less regularly arranged chains. The balance between these regions affects how a polymer responds to mechanical loading, heat, and transport through the material. Interfaces between ordered and disordered areas can further influence overall performance, making microstructural analysis important when selecting materials for toughness, barrier behavior, or dimensional stability.
Processing history changes the way chains arrange after polymerization. Cooling can control the development of crystalline regions, stretching can increase molecular orientation, and annealing can allow structural rearrangement over time. Because these processes alter chain packing and phase organization, identical polymer compositions can acquire different performance characteristics depending on the thermal and mechanical treatments used during manufacturing.
Engineers compare structural features such as chain orientation, branching, crystallinity, amorphous content, and phase interfaces with observed properties. This approach links nanoscale organization to strength, stiffness, toughness, flexibility, thermal stability, and barrier performance. The resulting relationships support more informed material selection and help identify whether a performance difference arises from polymer chemistry, processing conditions, or the resulting internal arrangement.
Microstructural control supports the design of structural components, coatings, membranes, fibers, and additive-manufactured parts. Each application may require a different balance of mechanical, thermal, flexible, or barrier performance. By adjusting chain organization and processing history, engineers can tailor the material to its intended function rather than relying only on the polymer's general chemical identity.
Selection should account for the relationship between the polymer's internal organization and the demands of service. Engineers can examine how chain architecture, molecular orientation, crystallinity, phase separation, and interfaces relate to required strength, stiffness, toughness, flexibility, thermal stability, or barrier behavior. Processing routes such as cooling, stretching, and annealing also matter because they can change the final performance.