Structural features of functional polysiloxanes radical and ionic photo-curing for laser printing applications

Talianov, Pavel M.; Rzhevskii, Sergey S.; Pankin, Dmitrii; Deriabin, Konstantin V.; Islamova, Regina M.; Manshina, Alina

doi:10.1007/s10965-021-02409-0

Cited by 7 publications

(11 citation statements)

References 28 publications

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“…40 On the other hand, on the basis of calculated frequencies for stretching Si−O and C−O vibrations, the formation of linear oligomers also cannot be excluded during silicon−oxygen chain degradation (Figures 4d and S3, S4). 38 All experimental FTIR spectra are in good agreement with TG studies of polyGPTMS 16 and the polyGPTMS−Y 2 O 3 nanocomposite (Figure S1).…”

Section: Ftir Spectrasupporting

confidence: 77%

“…All experimental FTIR spectra are in good agreement with TG studies of polyGPTMS and the polyGPTMS–Y 2 O 3 nanocomposite (Figure S1).…”

Section: Resultsmentioning

confidence: 99%

“…Laser-induced cured polyGPTMS (solid material) was prepared by our previously published method from liquid GPTMS (monomer) using (p-(octyloxyphenyl)phenyliodonium hexafluoroantimonate) as a photoinitiator. 16 1.0 mL of a Y 2 O 3 NP acetone solution was added to GPTMS to prepare the polyGPTMS−Y 2 O 3 nanocomposite. The mixture was ultrasonically treated at 20 kHz for 5 min to evenly distribute the oxide particles over the reactive volume.…”

Section: Methodsmentioning

confidence: 99%

“…Qualitatively, the interpretation of the peaks is in good agreement with the earlier studies of GPTMS 36 and polyGPTMS. 16 The peak at 1078 cm −1 has a tendency to decrease at heating from 20 to 250 °C. However, the most intensive peak at 1013 cm −1 becomes sharper (especially in the case of the nanocomposite) and shifts toward the higher-frequency region (1060 cm −1 ), which is close to the typical asymmetric stretching Si−O vibrations for silica glass.…”

Section: Ftir Spectramentioning

confidence: 97%

“…18,19 Laser polymerization and laser curing are advanced approaches for obtaining polymers and nanocomposites for further application in 3D printing technologies. 16 Use of laser polymerization provides the creation of luminescent tracers directly on devices/products, which allows for local synthesis of the polymer/nanocomposite in a given area of an object that requires temperature control. Local synthesis of heat-treated luminescence tracers is practically easier to use and more material (polymer/nanocomposite) conserving.…”

Section: Introductionmentioning

confidence: 99%

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Photocured Organofunctional Silicon-Based Polymer and Its Y₂O₃ Nanocomposite as the Luminescence Tracer of Thermal History

Pankin

Mamonova

Mongilyov

et al. 2022

ACS Appl. Polym. Mater.

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Materials with irreversibly changing properties after thermal heating are of great interest as thermal history trackers and are in demand as part of almost any device. Here, a promising thermoreporting material based on an organosilicone nanocomposite is suggested. Samples of photocured poly(1-trimethoxysilylpropyloxymethyl)ethylenoxide (polyGPTMS) and its nanocomposite with a filler of Y2O3 nanoparticles (polyGPTMS–Y2O3) were obtained with UV laser polymerization. The subsequent heat treatment of the samples revealed luminescence, the spectral position of which demonstrated a red shift with temperature increase. Comparative analysis of luminescence and Fourier-transform infrared spectroscopy spectra as well as theoretical modeling were used to characterize the structural peculiarities of the polymer and the nanocomposite. It was found that the luminescence behavior correlates with the color centers formation in the course of thermal treatment. The red shift of luminescence with temperature is associated with the redistribution of the chemical network and changes in the contribution of different color centers. The main effect is connected with an E′ center and oxygen-deficient centers, where the predominant contribution of the latter at high temperatures determines the observed luminescence red shift. The different dynamics of the color centers formation for polyGPTMS and polyGPTMS–Y2O3 results in a correspondingly stepwise and gradual luminescence red shift. The uncovered gradual luminescence red shift with thermal treatment of the polyGPTMS–Y2O3 makes the nanocomposite a promising tracer of thermal history. Using polyGPTMS–Y2O3 nanocomposite as a reporting material allows establishing not only the fact of heating but also the heating temperature.

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Section: Ftir Spectrasupporting

confidence: 77%

“…All experimental FTIR spectra are in good agreement with TG studies of polyGPTMS and the polyGPTMS–Y 2 O 3 nanocomposite (Figure S1).…”

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Ftir Spectramentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

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Photocured Organofunctional Silicon-Based Polymer and Its Y₂O₃ Nanocomposite as the Luminescence Tracer of Thermal History

Pankin

Mamonova

Mongilyov

et al. 2022

ACS Appl. Polym. Mater.

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High‐temperature platinum‐catalyzed hydrosilylation and dehydrocoupling cross‐linking of silicones

Filippova,

Deriabin,

Golovenko

et al. 2023

Applied Organom Chemis

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We propose to use the platinum(II) C,N‐cyclometalated complex (PCC) to catalyze the hydrosilylation and dehydrocoupling reactions of high molecular weight polysiloxanes at elevated temperatures (above 100°C). PCC was prepared via a three‐step procedure consisting of the 2‐hydrazinopyridine synthesis, its treatment with 3‐methoxy‐4‐(prop‐2‐yn‐1‐yloxy)benzaldehyde, and coupling of the obtained product with cis‐[PtCl2(CNXyl)2]. This complex exhibits thermal stability up to 150°C even at heating in air. PCC allows carrying out the cross‐linking of vinyl‐terminated polydimethylsiloxane (V‐PDMS) and polymethylhydrosiloxane (PMHS) by hydrosilylation, as well as PMHS dehydrocoupling cross‐linking at 150 and 120°C, respectively. The coupling (cross‐linking) patterns were successfully confirmed by 1H, 13C, and 29Si solid‐state NMR spectroscopy. The thermal and swelling characteristics and the transparency of the obtained silicone materials indicate the absence of aggregation of platinum particles.

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Urethane-acrylate-based photo-inks for digital light processing of flexible materials

2023

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Urethane–acrylate-based photo-inks containing various concentrations (0.1–1.5 wt.%) of two photo-initiators, namely ethyl phenyl(2,4,6-trimethylbenzoyl)phosphinate (TPOL) or diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide (BPO), for digital light processing (DLP) were developed. According to photo-DSC kinetics investigations, no significant difference was detected between the photo-activity of formulations containing BPO or TPOL at various concentrations. BPO (1.0 wt.%) with a high molar extinction coefficient (500 L/mol·cm at 365 nm) resulted in higher controllability on the layer thickness (100 µm) during the 3D printing process. The surface cracks that appeared during the post-curing process could be avoided by splitting the exposure time (5 min) into short intervals (5 × 1 min) without affecting double bond conversion (DBC). Several flexible objects were successfully 3D printed in good quality and their thermomechanical properties and layer-by-layer morphology were investigated.

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Structural features of functional polysiloxanes radical and ionic photo-curing for laser printing applications

Cited by 7 publications

References 28 publications

Photocured Organofunctional Silicon-Based Polymer and Its Y₂O₃ Nanocomposite as the Luminescence Tracer of Thermal History

Photocured Organofunctional Silicon-Based Polymer and Its Y₂O₃ Nanocomposite as the Luminescence Tracer of Thermal History

High‐temperature platinum‐catalyzed hydrosilylation and dehydrocoupling cross‐linking of silicones

Urethane-acrylate-based photo-inks for digital light processing of flexible materials

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Structural features of functional polysiloxanes radical and ionic photo-curing for laser printing applications

Cited by 7 publications

References 28 publications

Photocured Organofunctional Silicon-Based Polymer and Its Y2O3 Nanocomposite as the Luminescence Tracer of Thermal History

Photocured Organofunctional Silicon-Based Polymer and Its Y2O3 Nanocomposite as the Luminescence Tracer of Thermal History

High‐temperature platinum‐catalyzed hydrosilylation and dehydrocoupling cross‐linking of silicones

Urethane-acrylate-based photo-inks for digital light processing of flexible materials

Contact Info

Product

Resources

About

Photocured Organofunctional Silicon-Based Polymer and Its Y₂O₃ Nanocomposite as the Luminescence Tracer of Thermal History

Photocured Organofunctional Silicon-Based Polymer and Its Y₂O₃ Nanocomposite as the Luminescence Tracer of Thermal History