Functionalized Soybean Oil- and Vanillin-Based Dual Cure Photopolymerizable System for Light-Based 3D Structuring

Article Polymer Science

Vanillin acrylate-based thermo-responsive shape memory antimicrobial photopolymers

Aukse Navaruckiene et al.

Summary: Vanillin acrylate-based thermo-responsive shape memory photopolymers with high thermal stability, tunable mechanical properties, and antimicrobial activity have been developed.

EXPRESS POLYMER LETTERS (2022)

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Review Polymer Science

From plant phenols to novel bio-based polymers

Chaoqun Zhang et al.

Summary: Replacing petroleum-based products with inexpensive, biorenewable, natural materials is essential for sustainable development and will make a significant impact on the polymer industry and the environment. Biorenewable plant phenols, with their unique structures and abundance, are of great industrial significance.

PROGRESS IN POLYMER SCIENCE (2022)

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Article Engineering, Manufacturing

Development and optical 3D printing of acrylated epoxidized soybean oil-based composites with functionalized calcium silicate hydrate filler derived from aluminium fluoride production waste

Migle Lebedevaite et al.

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING (2022)

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Article Materials Science, Multidisciplinary

Synthesis and application of triphenylamine-based aldehydes as photo-initiators for multi-photon lithography

D. Ladika et al.

Summary: Three new triphenylamine derivatives with formyl groups were synthesized and evaluated as photo-initiators for multi-photon lithography. The efficiency of photo-polymerization was tested using two different setups and for various applications. The results show that these photo-initiators are a viable alternative to standard ones, thanks to their wide fabrication window, well-defined 3D prints in the sub-micron range, and solubility.

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING (2022)

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Article Optics

Far-field lithography through saturated resonance energy transfer

Nikolaos Liaros

Summary: A method based on resonance energy transfer is proposed for writing three-dimensional features in the far field. The saturation of energy transfer induces a nonlinear intensity response, enabling three-dimensional nanofabrication without ultrafast excitation. Addition of a second, spatially shaped beam allows nanopatterning below the diffraction limit.

OPTICS LETTERS (2022)

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Article Agricultural Engineering

Synthesis and properties of porous materials from polymeric acrylated epoxidized soybean oil via an emulsion template

Xujuan Huang et al.

Summary: RP-AESO porous materials prepared by emulsion template have uniform pore size distribution, hydrophobic properties, and oil absorption capacity. With increasing concentration of H-ESO-HEC, the pore density of RP-AESO porous materials increases and the average pore size decreases, leading to a decrease in compressive strength. Furthermore, these porous materials exhibit good reusability.

INDUSTRIAL CROPS AND PRODUCTS (2022)

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Article Optics

Light-sheet 3D microprinting via two-colour two-step absorption

Vincent Hahn et al.

Summary: In recent years, there has been a growing interest in high-speed, high-resolution optics-based 3D printing technology. By combining image projection with optical nonlinearity, researchers have successfully achieved high printing rates with small voxel volumes.

NATURE PHOTONICS (2022)

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Article Polymer Science

Synthesis and characterization of interpenetrating polymer networks (IPNs) based on UV curable resin and blocked isocyanate/polyols

Jie Liu et al.

Summary: This study successfully synthesized a series of interpenetrating polymer networks (IPNs) using a sequential UV-thermal dual-curing method. The effect of different polyol hydroxyl numbers on the properties of IPNs was systematically studied. The results showed that pentaerythritol as polyol exhibited the highest tensile strength. Moreover, introducing interpenetrating or semi-interpenetrating networks improved the mechanical properties of the UV curable resin.

POLYMER (2022)

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Proceedings Paper Materials Science, Multidisciplinary

Photopolymerizable resin-based 3D printed biomedical composites: Factors affecting resin viscosity

Abhijit Vyas et al.

Summary: 3D printing of biomedical composites using particulate fillers and biocompatible polymers shows great potential in tunability of properties. Technologies like SLA and DLP offer precision and controlled manipulation, with critical importance on regulating resin viscosity for successful development.

MATERIALS TODAY-PROCEEDINGS (2022)

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Review Nanoscience & Nanotechnology

Polymerization mechanisms initiated by spatio-temporally confined light

Edvinas Skliutas et al.

Summary: Ultrafast laser 3D lithography based on multi-photon lithography offers precise rapid prototyping and flexible additive manufacturing options, yet there is still incomplete understanding regarding factors like spatial resolution, accuracy, fabrication throughput, repeatability, and material properties.

NANOPHOTONICS (2021)

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Article Agricultural Engineering

Influence of photoinitiator and temperature on photocross-linking kinetics of acrylated epoxidized soybean oil and properties of the resulting polymers

Migle Lebedevaite et al.

Summary: The study investigated the photocross-linking kinetics of acrylated epoxidized soybean oil, finding that the type and amount of photoinitiator had an impact on the polymer properties. The results could help integrate modified soybean oil into UV/VIS curing systems, reducing environmental impact.

INDUSTRIAL CROPS AND PRODUCTS (2021)

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Article Chemistry, Applied

Dual-cured thermosets from glycydil methacrylate obtained by epoxy-amine reaction and methacrylate homopolymerization

Adria Roig et al.

Summary: Dual-curing is a processing technology that combines two polymerization processes and proper formulation selection to prepare intermediate materials with tailored characteristics, leading to a high crosslinked network during the second stage. In this study, a commercial monomer, glycidyl methacrylate, and diglycidylether of bisphenol A were used to obtain a gelled intermediate material. The evolution of curing steps was studied by DSC and FTIR, while the stability and characteristics of the materials were evaluated by TGA and DMTA.

REACTIVE & FUNCTIONAL POLYMERS (2021)

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Article Optics

Rapid, continuous projection multi-photon 3D printing enabled by spatiotemporal focusing of femtosecond pulses

Paul Somers et al.

Summary: This work combines high-speed projection multiphoton printing with spatiotemporal focusing to achieve rapid, layer-by-layer fabrication of 3D structures. A numerical model for computing spatiotemporal focusing and imaging is presented and verified. Complex 3D structures with smooth features are fabricated, showcasing the potential to manufacture 3D structures with micro/nanoscale features in a practical time scale.

LIGHT-SCIENCE & APPLICATIONS (2021)

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Article Chemistry, Organic

Antimicrobial effects of vanillin-based pyridyl-benzylidene-5-fluoroindolins

Deena Gladies Raymond Mohanraj et al.

Summary: This study evaluated the antimicrobial effect and DNA gyrase inhibitor potential of vanillin-based pyridyl-substituted fluoro-indolines, showing broad-spectrum activity against both bacterial types and fungal in vitro and in silico. The compounds were synthesized and established through green-chemistry approaches, and their cytotoxicity against macrophages was assessed using the MTT assay.

JOURNAL OF HETEROCYCLIC CHEMISTRY (2021)

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Article Polymer Science

Vegetable Oil-Based Thiol-Ene/Thiol-Epoxy Resins for Laser Direct Writing 3D Micro-/Nano-Lithography

Sigita Grauzeliene et al.

Summary: This study focuses on enhancing the performance of thermosets by combining photo- and thermal polymerization, using renewable resources instead of petroleum-based materials. By studying thiol-epoxy reactions and examining rheological properties, the most suitable formulations for laser direct writing were selected. The dual cured thermosets showed higher rigidity, tensile strength, and thermal stability, demonstrating their potential for high-resolution 3D printing.

POLYMERS (2021)

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Review Polymer Science

The Prospering of Macromolecular Materials Based on Plant Oils within the Blooming Field of Polymers from Renewable Resources

Julio Antonio Conti Silva et al.

Summary: This paper provides an overview of recent progress in the research and development of polymers derived from plant oils, emphasizing the increasing interest in novel approaches to synthesis, characterization, and properties of these materials from renewable resources. The use of various monomers and comonomers, as well as diverse synthetic pathways, highlights the wide range of possibilities for the preparation of these materials. Additionally, the specific topic of using tung oil as a source for original polymers, copolymers, and composites is discussed in detail, covering mechanisms, structures, properties, and potential applications.

POLYMERS (2021)

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Article Polymer Science