Intraoperative and Postoperative Care of Port Patients

Appelhoff, Birgit; Moser, Lisa

doi:10.1007/978-3-662-64494-2_7

Cited by 2 publications

(4 citation statements)

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“…Another application of the synthesized sensitizers or absorbers can be seen to use them for photonic drying of coatings [3][4][5]. Here, very high extinction coefficients of these substances enable targeted drying.…”

Section: Discussionmentioning

confidence: 99%

“…Photochemistry, here, represents as interdisciplinary discipline of material sciences and engineering to connect different fields. This offers the opportunity to work on practical problems with almost well-established methods and considers challenges to develop new photochemical methods with focus on surfaces and coating chemistry [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

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The Design and Synthesis of New NIR-Active Sensitizers for Use in Photochemical Processes and Controlled Polymerizations

Meckbach,

Driesen,

Gutmann

et al. 2023

J. Photopol. Sci. Technol.

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The NIR-absorbers S1-S3 derived from heptamethines covering the absorption from 700-1100 nm were used to study photopolymerization of vinyl monomers in organic and aqueous surroundings. Polymerization conditions were chosen to follow an ATRP protocol using ethyl α-bromophenylacetate (EBPA) as initiator in organic surroundings and ethyl-2 bromoisobutyrate in aqueous medium. Excitation proceeded at 820 nm using a new high power NIR-LED. PtBr4, AuBr3, and NiBr2 served as metal catalyst to complement previous findings where CuBr2/L and FeBr3/Brserved as metal catalysts in photo-ATRP explorations using NIR-radiation for excitation. UV-Vis-NIR titration experiments were pursued to receive more detailed information about interactions between the sensitizer (Sens) and the 3d-metal ion added. Except for NiBr2, all metal salts resulted in a change of the absorption spectrum. This occurred bathochromic in case of FeBr3 addition and hypsochromic upon addition of CuBr2, PtBr4, and AuBr3.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Design and Synthesis of New NIR-Active Sensitizers for Use in Photochemical Processes and Controlled Polymerizations

Meckbach,

Driesen,

Gutmann

et al. 2023

J. Photopol. Sci. Technol.

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“…Accordingly, experiments approved the possibility to use this heat generated for the drying of aqueous coating dispersions. This was also claimed in a recent patent application [19]. Nevertheless, observation of the physical drying process applying photonic sources instead of ovens does not appear as trivial.…”

mentioning

confidence: 83%

“…Therefore, chemical crosslinking with NIR radiation appeared as a further challenge of this type of water-borne coating. Conventional coatings of this type normally were dried in energy consuming convection ovens followed by consecutive curing UV-radiation in a two-step process [19]. Here we propose a process with NIR of physical drying and curing in just one step.…”

Section: S-1 S-2mentioning

confidence: 99%

Novel Photoinitiator System for Simultaneous Physical drying and Free Radical Polymerization of Water-Borne Dispersions with Near-Infrared Excitation

Appelhoff,

Hornemann,

Fokkink

et al. 2023

J. Photopol. Sci. Technol.

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Energy efficient processes in industry represent a key factor to realize a fast transition to renewable energy sources. In the coatings industry, oven technologies applied for drying and curing, mainly contribute to energy consumption. Substitution of these wasting technologies by near infrared radiation (NIR) in combination with a NIR-absorber represents a promising alternative to reduce the energy use. Here, combining of a NIR-LED with a heptamethine cyanine operating as absorber can significantly accelerate the drying process of a water borne coating as measured by Laser Speckle Imaging (LSI). The combination of cyanine and bis(tert-butyl)iodonium salts as radical initiator results in an initiation system that efficiently works in combination with a NIR-LED to dry the coating followed by crosslinking in the same step. photo-DSC and FTIR measurements confirmed the results obtained. The use of a water compatible photoinitiator system based on a cyanine with sulfonate groups and bis(tertbutyl)iodonium lactate as water soluble coinitiator opened the possibility to eliminate the cosolvent needed for film formation and to create a complete VOC free formulation.

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Intraoperative and Postoperative Care of Port Patients

Cited by 2 publications

References 0 publications

The Design and Synthesis of New NIR-Active Sensitizers for Use in Photochemical Processes and Controlled Polymerizations

The Design and Synthesis of New NIR-Active Sensitizers for Use in Photochemical Processes and Controlled Polymerizations

Novel Photoinitiator System for Simultaneous Physical drying and Free Radical Polymerization of Water-Borne Dispersions with Near-Infrared Excitation

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