New UV LED curing approach for polyacrylamide and poly(N-isopropylacrylamide) hydrogels

Ayub, Nur Farizah; Hashim, Shahrin; Jamaluddin, Jamarosliza; Adrus, Nadia

doi:10.1039/c7nj00176b

Cited by 25 publications

(15 citation statements)

References 20 publications

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“…The PNIPAAm hydrogel is intrinsically thermo-responsive. [63][64][65] Thus, the appearances of the graed PET textiles were signicantly changed above the LCST (Fig. 8iii).…”

Section: Oil Staining Behaviour At Different Temperaturesmentioning

confidence: 98%

Impact of carboxylation and hydrolysis functionalisations on the anti-oil staining behaviour of textiles grafted with poly(N-isopropylacrylamide) hydrogel

et al. 2018

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“…The PNIPAAm hydrogel is intrinsically thermo-responsive. [63][64][65] Thus, the appearances of the graed PET textiles were signicantly changed above the LCST (Fig. 8iii).…”

Section: Oil Staining Behaviour At Different Temperaturesmentioning

confidence: 98%

Impact of carboxylation and hydrolysis functionalisations on the anti-oil staining behaviour of textiles grafted with poly(N-isopropylacrylamide) hydrogel

et al. 2018

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“… 46 , 47 The combination of hydrogel precursor and method of polymerization will determine the final molecular arrangement, allowing for finely controlled macromolecular conformations. 48 , 49 …”

Section: Introductionmentioning

confidence: 99%

Self-Assembling Hydrogel Structures for Neural Tissue Repair

Peressotti

Koehl

Goding

et al. 2021

ACS Biomater. Sci. Eng.

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Hydrogel materials have been employed as biological scaffolds for tissue regeneration across a wide range of applications. Their versatility and biomimetic properties make them an optimal choice for treating the complex and delicate milieu of neural tissue damage. Aside from finely tailored hydrogel properties, which aim to mimic healthy physiological tissue, a minimally invasive delivery method is essential to prevent off-target and surgery-related complications. The specific class of injectable hydrogels termed self-assembling peptides (SAPs), provide an ideal combination of in situ polymerization combined with versatility for biofunctionlization, tunable physicochemical properties, and high cytocompatibility. This review identifies design criteria for neural scaffolds based upon key cellular interactions with the neural extracellular matrix (ECM), with emphasis on aspects that are reproducible in a biomaterial environment. Examples of the most recent SAPs and modification methods are presented, with a focus on biological, mechanical, and topographical cues. Furthermore, SAP electrical properties and methods to provide appropriate electrical and electrochemical cues are widely discussed, in light of the endogenous electrical activity of neural tissue as well as the clinical effectiveness of stimulation treatments. Recent applications of SAP materials in neural repair and electrical stimulation therapies are highlighted, identifying research gaps in the field of hydrogels for neural regeneration.

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“…In the recent years, UV-LED light source has progressively emerged in various fields such as ink and printing, stereolithography, adhesive, hydrogel and wood coating [ 26 , 27 , 28 , 29 , 30 ]. This is because UV-LED consumes 50–75% less energy than the equivalent mercury arc lamp and has narrow wavelength distribution [ 27 , 28 , 29 ]. The capability to operate promptly makes the UV-LED system superior to the existing UV mercury especially in term of faster curing.…”

Section: Introductionmentioning

confidence: 99%

UV-LED as a New Emerging Tool for Curable Polyurethane Acrylate Hydrophobic Coating

et al. 2021

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The elimination of mercury, low energy consumption, and low heat make the ultraviolet light-emitting diode (UV-LED) system emerge as a promising alternative to conventional UV-mercury radiation coating. Hence, a series of hydrophobic coatings based on urethane acrylate oligomer and fluorinated monomer via UV-LED photopolymerisation was designed in this paper. The presence of fluorine component at 1160 cm−1, 1235 cm−1, and 1296 cm−1 was confirmed by Fourier Transform Infra-Red spectroscopy. A considerably high degree C=C conversion (96–98%) and gel fraction (95–93%) verified the application of UV-LED as a new technique in radiation coating. It is well-accepted that fluorinated monomer can change the surface wettability as the water contact angle of the coating evolved from 88.4° to 121.2°, which, in turn, reduced its surface free energy by 70.5%. Hence, the hydrophobicity of the coating was governed by the migration of the fluorine component to the coating surface as validated by scanning electron and atomic force microscopies. However, above 4 phr of fluorinated monomer, the transparency of the cured coating examined by UV-visible spectroscopy experienced approximately a 16% reduction. In summary, the utilisation of UV-LED was a great initiative to develop green aspect in photopolymerisation, particularly in coating technology.

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New UV LED curing approach for polyacrylamide and poly(N-isopropylacrylamide) hydrogels

Abstract: Photopolymerization of hydrogels using UV LED system was highly efficient with the aid of synthesized water soluble photoinitiator.

Cited by 25 publications

References 20 publications

Impact of carboxylation and hydrolysis functionalisations on the anti-oil staining behaviour of textiles grafted with poly(N-isopropylacrylamide) hydrogel

Impact of carboxylation and hydrolysis functionalisations on the anti-oil staining behaviour of textiles grafted with poly(N-isopropylacrylamide) hydrogel

Self-Assembling Hydrogel Structures for Neural Tissue Repair

UV-LED as a New Emerging Tool for Curable Polyurethane Acrylate Hydrophobic Coating

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