Photo-induced thiol-ene crosslinked polymethacrylate networks reinforced with Al2O3 nanoparticles

Lee, Dong Geun; An, So Young; Um, Min Seop; Choi, Woo Jin; Noh, Seung Man; Jung, Hyun Wook; Oh, Jung Kwon

doi:10.1016/j.polymer.2016.08.049

Cited by 7 publications

(5 citation statements)

References 51 publications

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“…67 Similarly, moduli can also be varied through the addition of composite solids, such as carbon nanotubes, 88 or aluminum oxide nanoparticles. 89 The addition of 0.75 wt % carbon nanotubes resulted in a 3-fold increase in the storage modulus of NOA-83H, from 970 to 2850 MPa, or 5.7 wt % aluminum oxide nanoparticles nearly doubled the storage modulus of the thiol−acrylate system. These solids are thought to reinforce the TE network, resulting in a stiffer material.…”

Section: ■ Properties Of Thiol−ene Polymersmentioning

confidence: 98%

“…An increase in the storage modulus can also be achieved by the addition of ternary components into the formulation, such as epoxy monomers; , however, conflicting data have been shown, where increasing epoxy content lowers the stiffness of the material . Similarly, moduli can also be varied through the addition of composite solids, such as carbon nanotubes, or aluminum oxide nanoparticles . The addition of 0.75 wt % carbon nanotubes resulted in a 3-fold increase in the storage modulus of NOA-83H, from 970 to 2850 MPa, or 5.7 wt % aluminum oxide nanoparticles nearly doubled the storage modulus of the thiol–acrylate system.…”

Section: Properties Of Thiol–ene Polymersmentioning

confidence: 99%

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Thiol–Ene Based Polymers as Versatile Materials for Microfluidic Devices for Life Sciences Applications

Sticker

Geczy

Häfeli

et al. 2020

ACS Appl. Mater. Interfaces

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While there is a steady growth in the number of microfluidics applications, the search for an optimal material that delivers the diverse characteristics needed for the numerous tasks is still nowhere close to being settled. Often overlooked and still underrepresented, the thiol−ene family of polymer materials has an enormous potential for applications in organs-on-a-chip, droplet productions, microanalytics, and point of care testing. In this review, the main characteristics of the thiol−ene materials are given, and advantages and drawbacks with respect to their potential in microfluidic chip fabrication are critically assessed. Select applications, which exploit the versatility of the thiol−ene polymers, are presented and discussed. It is concluded that, in particular, the rapid prototyping possibility combined with the material's resulting mechanical strength, solvent resistance, and biocompatibility, as well as the inherently easy surface functionalization, are strong factors to make thiol−ene polymers strong contenders for promising future materials for many biological, clinical, and technical labon-a-chip applications.

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Section: ■ Properties Of Thiol−ene Polymersmentioning

confidence: 98%

Section: Properties Of Thiol–ene Polymersmentioning

confidence: 99%

Thiol–Ene Based Polymers as Versatile Materials for Microfluidic Devices for Life Sciences Applications

Sticker

Geczy

Häfeli

et al. 2020

ACS Appl. Mater. Interfaces

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“…The increasing trend of the final G′ values for the hydrogels with increasing G-SiNP content up to 7 wt% is shown in Figure 3 b, indicating that an increase in the particle-matrix interfacial area by the epoxy-functionalized nanoparticles improved the viscoelastic properties of the hydrogels [ 39 ]. Notably, the G-SiNP content was limited to less than 10 wt% because of unexpected particle aggregation, which can degrade the properties of crosslinked hydrogel films [ 17 ].…”

Section: Resultsmentioning

confidence: 99%

“…A possible strategy for properly distributing epoxy groups onto a hydrogel film surface is to incorporate epoxy-functionalized inorganic nanoparticles in the coating formulation as a building block [ 17 ]. In particular, silica nanoparticles (Si-NPs) play an important role as reinforcing extenders in polymeric composites [ 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Silica Nanoparticles Blocked with Epoxy Groups on the Crosslinking and Surface Properties of PEG Hydrogel Films

et al. 2021

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Silica nanoparticles (G-SiNPs) blocked with 3-glycidoxypropyl trimethoxysilane (GPTS) were newly applied to hydrogel films for improving film coating properties and to distribute the epoxy groups on the film surface. The effects of the content of epoxy-functionalized G-SiNPs on the crosslinking features by photo-induced radical polymerization and the surface mechanical properties of the hydrogel films containing poly(ethylene glycol) dimethacrylate (PEGDMA) and glycidyl methacrylate (GMA) were investigated. The real-time elastic modulus of various PEG hydrogel mixtures with prepared particles was monitored using a rotational rheometer. The distribution of epoxy groups on the crosslinked film surface was directly and indirectly estimated by the elemental analysis of Si and Br. The surface mechanical properties of various hydrogel films were measured by nano-indentation and nano-scratch tests. The relationship between the rheological and surface properties of PEG-based hydrogel films suggests that the use of small amounts of G-SiNPs enhances the surface hardness and crosslinked network of the film and uniformly distributes sufficient epoxy groups on the film surface for further coating applications.

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“…Many redox‐responsive cross‐linkers being utilized for nanogel synthesis contain cysteine and cystamine as redox‐responsive constituents, terminal acrylates to take part in radical polymerization, and PEG as a functional skeletal unit of the nanogel, owing to its advantageous properties as discussed in the preceding section . Some of the cross‐linkers mainly being used are l ‐cystine N ‐carboxyanhydride ( l ‐Cys NCA), dithiopropionyl poly(ethylene glycol)dimethacrylate (ssDMA), cystine dimethacrylate (CDA), 2‐(pyridin‐2‐yldisulfanyl)ethyl acrylate (PDSA), N,N′ ‐bis(acryloyl)cystamine (BAC), pendent disulfide‐functionalized methacrylate (HMssEt), 11,11′‐diselanediylbis(undecan‐1‐ol) (DSeOH), 11,11′‐ditellurediylbis(undecan‐1‐ol) (DTeOH), N,N′ ‐bis (methacryloyl)selenocystamine (BMASC), and dithio‐bis‐maleimidoethane (DTME) ( Figure 2 and Table 2 ). Disulfide (SS), ditellurium (TeTe), and diselenide (SeSe) bonds are the main reported building blocks and important structural units of redox‐responsive materials and are described to possess excellent activity in the presence of reductants/oxidants .…”

Section: Fabrication Of Redox‐responsive Nanogelsmentioning

confidence: 99%

A Comprehensive Outlook of Synthetic Strategies and Applications of Redox‐Responsive Nanogels in Drug Delivery

Kumar

Liu

Behl

2019

Macromolecular Bioscience

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Increasing recognition of the role of oxidative stress in the pathogenesis of many clinical conditions and the existence of defined redox potential in healthy tissues has led to extensive research in the development of redox‐responsive materials for biomedical applications. Especially, considerable growth has been seen in the fabrication of polymeric nanogel–based drug delivery carriers utilizing redox‐responsive cross‐linkers bearing a variety of functional groups via various synthetic strategies. Redox‐responsive polymeric nanogels provide an advantage of facile chemical modification post synthesis and exhibit a remarkable response to biological redox stimuli. Due to the interdisciplinary nature of the subject, a more profound combined conceptual knowledge from a chemical and biological point of view is imperative for the rational design of redox‐responsive nanogels. The present review provides an insight into the design and fabrication of redox‐responsive nanogels with particular emphasis on synthetic strategies utilized for the development of redox‐responsive cross‐linkers, polymerization techniques being followed for nanogel development and biomedical applications. Cooperative effect of redox trigger with other stimuli such as pH and temperature in the evolution of dual and triple stimuli‐responsive nanogels is also discussed.

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Photo-induced thiol-ene crosslinked polymethacrylate networks reinforced with Al2O3 nanoparticles

Cited by 7 publications

References 51 publications

Thiol–Ene Based Polymers as Versatile Materials for Microfluidic Devices for Life Sciences Applications

Thiol–Ene Based Polymers as Versatile Materials for Microfluidic Devices for Life Sciences Applications

Effect of Silica Nanoparticles Blocked with Epoxy Groups on the Crosslinking and Surface Properties of PEG Hydrogel Films

A Comprehensive Outlook of Synthetic Strategies and Applications of Redox‐Responsive Nanogels in Drug Delivery

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