Photomechanics of light-activated polymers

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Shape-memory polymers are an emerging class of polymers with applications … Recently, light-activated polymers have been developed that exhibit large … The variation of the critical free volumes for propagation and termination, using the … In Section 3, we introduce spatial- and ensemble-averages in order to define the … Calculations were carried out with T ∗ /τ T =0.25 and T ∗∗ /τ T =0.75. Fig. 6 shows … 1.. IntroductionThermally activated shape memory polymers (SMP) are an … WebIn this paper, we model the photomechanics of light-activated, network rearranging polymers subjected to simultaneous deformation and network evolution. We then apply the model to the case of photo-induced creep behavior where a constant force is applied to the material during light irradiation. Note that photo-induced creep behavior yields

Photomechanics of light-activated shape memory polymers

WebJul 13, 2009 · Photomechanical shape memory polymers are an exciting class of materials that are able to store a temporary shape and recover their original shape when stimulated by light. In this work we develop a model to simulate the photomechanical behavior of light-activated shape memory polymers. To the best of our knowledge this is the first … Webthe development of a generalized modeling framework to describe the photomechanics. The features shared by light-activated polymers involve light interacting with the material, … how do you build a diverse team

Researchers discover new photoactivation mechanism for …

WebBrazel, C. S. [2009] “ Magnetothermally-responsive nanomaterials: Combining magnetic nanostructures and thermally-sensitive polymers for triggered drug release,” Pharmaceutical Research 26(3), 644–656. Crossref, ISI, Google Scholar WebJul 13, 2009 · Photomechanical shape memory polymers are an exciting class of materials that are able to store a temporary shape and recover their original shape when stimulated … WebLight-activated polymers are an exciting class of materials that respond mechanically when irradiated at particular wavelengths. Recent demonstrations include two novel polymers developed by Scott ... pho in weatherford texas

Photomechanics of light-activated polymers - 百度学术

Thermomechanical behavior of a two-way shape memory

WebNov 14, 2013 · Now researchers have combined the photo-responsive properties of azobenzene-functionalized polymers, which undergo light-induced isomerization with … WebSep 16, 2024 · Select polymers can be produced via a process called free radical polymerization, in which a monomer solution is exposed to ultraviolet (UV) light. The high … pho in winder gaWebIn this paper, we develop a three-dimensional finite-deformation modeling framework to describe the photomechanical response of light-activated polymer systems. This … how do you build a financial model

"WebThe features shared by light-activated polymers involve light interacting with the material, which triggers photochemical reactions that alter the structure of the crosslinked polymer network. Many such structural alterations result in an evolution of the polymer network, and subsequent macroscopic deformation. " - Photomechanics of light-activated polymers

Photomechanics of light-activated polymers

WebIn this paper, we develop a three-dimensional finite-deformation modeling framework to describe the photomechanical response of light-activated polymer systems. This …

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WebPhotomechanics of light-activated polymers, 2009 Read his paper Approaches and challenges in the synthesis of three-dimensional covalent-organic frameworks. Visit his University profile. View his ResearchGate profile and Google Scholar profile. Member of. Chemistry Board ... WebUntitled - Free download as PDF File (.pdf), Text File (.txt) or read online for free.

WebLight-activated polymers are an exciting class of materials that respond mechanically when irradiated at particular wavelengths. Recent demonstrations include two novel polymers developed by Scott ... WebApr 28, 2024 · Novel photoinitiating systems operating in UV-Vis light for radical polymerization of acrylates are described, composed of squaraine as a light absorber and various diphenyliodonium (Iod) salts as co-initiators. ... Photomechanics of light-activated polymers. K. Long, T. F. Scott, H. Qi, C. Bowman, M. Dunn; Materials Science. 2009; 142. …

WebJul 1, 2014 · Photomechanics of light-activated polymers. J Mech Phys Solids (2009) Y.C. Chen et al. A constitutive theory for shape memory polymers. Part I. Large deformations ... Current study provides a comprehensive review of the advances in experimental and numerical investigations on light activated shape memory polymers and composites. … WebJul 1, 2009 · Polymers containing cinnamic groups can be deformed and fixed into pre-determined shapes—such as elongated films and tubes, arches or spirals—by ultraviolet …

WebMar 1, 2024 · The self-healing process is considered as a coupled behavior that polymer chains diffuse across the interface and re-form the dynamic bonds assisted by the free radicals. We theoretically relate the light property to the interfacial self-healing strength of the polymers. We predict that the interfacial self-healing strength of the polymer ...

WebFor effective muscle-like actuation, materials with stratified structures and high molecular orders are necessary. Liquid-crystalline elastomers (LCEs) are superior soft materials that … pho in wichitaWebFeb 1, 2024 · Several photomechanical models have been built up to study the photomechanical behavior of light-activated polymer systems [47], [48]. The surface deformation of nematic elastomers, containing azobenzene chromophores, under the spot as well as striped illumination has been simulated in [49], [50]. ... Photomechanics of light … how do you build a gaming computerWebThe objectives of this dissertation research are to study the photomechanics of polymers including light activated polymer and two stage reactive polymer, and explore their … how do you build a drivewayWebPhotomechanics of light-activated polymers. KN Long, TF Scott, HJ Qi, CN Bowman, ML Dunn. Journal of the Mechanics and Physics of Solids 57 (7), 1103-1121, 2009. 161: 2009: Photopolymerized thiol-ene systems as shape memory polymers. ... Journal of Applied Polymer Science 93 (3), 1348-1359, 2004. 68: how do you build a fence gateWebOct 1, 2009 · Photomechanics of blanket and patterned liquid crystal elastomer films @article{Dunn2009PhotomechanicsOB, title={Photomechanics of blanket and patterned liquid crystal elastomer films}, author={Martin L. Dunn and Kurt Maute}, journal={Mechanics of Materials}, year={2009}, volume={41}, pages={1083-1089} } M. Dunn, K. Maute pho in winchesterWebSep 11, 2003 · Polymer solutions and solids that contain light-sensitive molecules can undergo photo-contraction, whereby light energy is converted into mechanical energy … how do you build a drop down list in excelWebApr 3, 2013 · Shape memory polymers (SMPs) are a class of smart materials that can fix a temporary shape and recover to their permanent (original) shape in response to an environmental stimulus such as heat, electricity, or irradiation, among others. ... Long K et al. 2009 Photomechanics of light-activated polymers J. Mech. Phys. Solids 57 1103–21. how do you build a gabion retaining wall