The chemistry and applications of UV-cured adhesives

Haddon, M.R.; Smith, Tara J

doi:10.1016/0143-7496(91)90021-9

Cited by 16 publications

(3 citation statements)

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“…In this study it has been shown that a lower viscosity leads to a higher degree of polymerization and a faster curing, which was attributed to a strong effect of the molecular mobility on the propagation reaction. A problem of free radical polymerization is the inhibition of the polymerization by oxygen [8,9], which makes it impossible to obtain a high degree of polymerization and the required thickness for the fabrication of microparts under standard conditions. Using cationic polymerization the presence of atmospheric oxygen does not prevent a complete polymerization but leads to a faster and more complete polymerization, attributed to the effect of humidity which favors the chain transfer reaction [2].…”

Section: Materials For Cationic Polymerization and Stamp Materialsmentioning

confidence: 99%

Replication of HARMST and large area nanostructured parts using UV cationic polymerization

Senn¹,

Mueller²,

Reinecke³

2010

J. Micromech. Microeng.

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This paper reports on the development of a reaction casting process for the fabrication of high aspect ratio microstructures (HARMST) and large area nanostructured parts, using UV cationic polymerization. Besides the process itself, materials had to be characterized to achieve thick layers. An epoxide resin, a bis-cycloaliphatic epoxide (BCE) and a divinylether of triethylene glycol (DVE-TEG) were used as monomers and triaryl sulfonium salt (TAS) was used as the photoinitiator. The materials were characterized relative to their rheological properties, the degree of polymerization and their hardness. The test structure consists of columns with an aspect ratio of 10. The results reveal that the materials used show excellent behavior for the replication of high aspect ratio structures. The replication of a nanostructured area of 10 × 10 cm 2 could also be realized with the presented process. The used structure is a 2D optical grating with a period of 2.5 μm and a diameter of the tip of 300 nm.

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Section: Materials For Cationic Polymerization and Stamp Materialsmentioning

confidence: 99%

Replication of HARMST and large area nanostructured parts using UV cationic polymerization

Senn¹,

Mueller²,

Reinecke³

2010

J. Micromech. Microeng.

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“…Photosensitive polymer is used in many fields and hence many researchers are now focusing on discovering new polymers having a photosensitive group in the polymer backbone. These types of polymer have been crosslinked easily by the irradiation of UV light and used as printing inks, photoresist plates, coating materials, 1 liquid crystals, 2 tissue engineering, 3 biosensors, 4 UV-curing adhesives, 5 hole transporting materials in organic light emitting diodes 6 and optical anisotropy. 7 The polymers containing photosensitive moiety such as cinnamate, 8 chalcone, 9 stilbene 10 maleimide and anthracene 11 easily go through photo crosslinking upon irradiation .…”

Section: Introductionmentioning

confidence: 99%

Acrylate polymers of triazine containing chalcone moiety: Synthesis, characterization, reactivity ratio and photocrosslinking studies

Suresh

Arun

2022

Polymers and Polymer Composites

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Acrylate monomer ((4-(3-(4-((4-(4-(3-(2,4-dichlorophenyl)-3-oxoprop-1-en-1-yl)phenoxy)-6-((4-nitrophenyl)amino)-1,3,5-triazin-2-yl)oxy)phenyl)-3-oxoprop-1-en-1-yl)phenyl acrylate (DTCP) is prepared and used to prepare poly (DTCP) and its copolymer poly (DTCP-co-HEA) and poly (DTCP-co-S) using 2-hydroxyethyl acrylate (HEA), styrene (S) by solution polymerization technique. Infrared spectroscopy (FT-IR), proton Nucleharmar Magnetic Resonance (1H NMR), and UV-Visible techniques are used to identify the synthesized polymers. Gel permeation chromatography method is used to determine the polymer’s weight average molecular weight, which is found to be around 10000 g/mol. According to the Thermo Gravimetric Analysis study, the synthesized polymers go through single stage decomposition centered at 340°C. The polymer reactivity ratio is found using well known Finemann-Ross (F-R), Kelen-Tudos (K-T), and extended Kelen-Tudos (ex.K-T) methods. The reactivity of the commercial monomers (HEA or S) is found to be higher than that of synthesized monomer, according to our findings. The photocrosslinking rate of the synthesized polymers is determined using a UV visible spectroscopic method and found to be high for polymer having HEA unit.

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“…It is also important to note that suppression of scattering light might influence neighboring samples. As many photochemical applications require irradiation in the UV region [20][21][22], high-power LEDs with a wavelength of 365 nm are suitable for such an array. This was the main goal of the work presented here.…”

Section: Introductionmentioning

confidence: 99%

A Novel Microtiter Plate Format High Power Open Source LED Array

et al. 2019

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Many photochemical or photobiological applications require the use of high power ultraviolet light sources, such as high-pressure mercury arc lamps. In addition, many photo-induced chemical, biochemical and biological applications require either a combinatorial setting or a parallel assay of multiple samples under the same environmental conditions to ensure reproducibility. To achieve this, alternative, controllable light sources, such as ultraviolet light emitting diodes (UV LEDs) with high power and spatial control are required. Preferably, LEDs are arranged in a suitable standardized 96-well microtiter plate format. We designed such an array and established the methods required for heat management and enabling stable, controllable illumination over time.

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The chemistry and applications of UV-cured adhesives

Cited by 16 publications

References 0 publications

Replication of HARMST and large area nanostructured parts using UV cationic polymerization

Replication of HARMST and large area nanostructured parts using UV cationic polymerization

Acrylate polymers of triazine containing chalcone moiety: Synthesis, characterization, reactivity ratio and photocrosslinking studies

A Novel Microtiter Plate Format High Power Open Source LED Array

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