Photopolymerizable Systems

Guvendiren, Murat; Purcell, Brendan P.; Burdick, Jason A.

doi:10.1016/b978-0-444-53349-4.00227-2

Cited by 10 publications

(6 citation statements)

References 261 publications

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“…PVOH surfaces with different hydrolysis standards, will solubilise at different rates and the diversity in the hydrolysis rates may be of advantage for certain applications. For example, the abundance of hydroxyl groups along the backbone enables macromers to be readily modified with reactive chemistries for photopolymerization [29]. Following hydrolysis, if all the acetate groups are converted to OH groups, then fully hydrolysed PVOH is obtained, however, if a proportion of acetate groups remain, the result is partially hydrolysed PVOH [7].…”

Section: Surface Analysis and Hydrolysismentioning

confidence: 99%

Interfacial Surface Properties of Compression Moulded Hydrolysed Polyvinyl Acetate (PVAc) Using Different Release Materials

et al. 2022

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Understanding the effect surface production has on polymer properties is important in the design of advanced materials. The aim of this study was to determine how the moulding process affected the rate of hydrolysis and the topography, chemistry and physicochemistry of PVAc moulded, hydrolysed surfaces. Three different mould surface materials were used to produce compression moulded PVAc sheets which were treated with aqueous NaOH at a range of concentrations. The Textile moulded sheet demonstrated the best hydrolysis results. The topography of the moulded sheets was transferred to the surfaces and the Kapton release sheet was visually smooth at lower magnification and demonstrated some pitting at higher magnification. The Teflon surface had features transferred from the coated stainless steel at lower magnifications and linear features at higher magnifications and the textile surface had a wrinkled appearance and irregularly spaced peaks. The release sheet used to mould the PVAc surfaces, affected the physicochemical parameters. The Kapton moulded surface demonstrated the most polar attributes and the Teflon surface the most dispersive. It was clear that the selection of the mould material had an influence on surface properties and hydrolysis of moulded PVAc. Such information is important for engineering design in industrial processes.

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Section: Surface Analysis and Hydrolysismentioning

confidence: 99%

Interfacial Surface Properties of Compression Moulded Hydrolysed Polyvinyl Acetate (PVAc) Using Different Release Materials

et al. 2022

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“…[10] Our group has employed a number of visible light triggered photo-reactions, including photocycloaddition of anthracene [11] and styrylpyrene, [12] triggered by irradiation at λmax = 420 nm, in the fabrication of dynamic hydrogels as biomaterials. Nevertheless, the short wavelength (λ = 405-455 nm) at which all of these chemistries operate, despite being non-harmful to living cells at low intensity, 13 is limiting their further application in biomaterials engineering due to the low tissue penetration property.…”

Section: Additive-free Green Light-induced Ligation Using Bodipy Triggersmentioning

confidence: 99%

Additive‐Free Green Light‐Induced Ligation Using BODIPY Triggers

Dove

Truong

2019

Angew Chem Int Ed

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Where a licence is displayed above, please note the terms and conditions of the licence govern your use of this document.When citing, please reference the published version. Take down policyWhile the University of Birmingham exercises care and attention in making items available there are rare occasions when an item has been uploaded in error or has been deemed to be commercially or otherwise sensitive.

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“…The Beer-Lambert law 35,36 states that absorbance correlates with molar absorptivity, concentration and thickness of the light absorbing medium. Therefore, high thickness of a dense film may have an adverse effect on the total degree of crosslinking.…”

Section: The Effect Of Film Thickness On Degree Of Crosslinkingmentioning

confidence: 99%

Synthesis and photocrosslinking of disulfonated poly(arylene ether sulfone) copolymers for potential reverse osmosis membrane materials

Nebipasagil

Sundell

Lane

et al. 2016

Polymer

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Disulfonated poly(arylene ether sulfone) random copolymers with controlled oligomeric molecular weights were synthesized via nucleophilic aromatic substitution step polymerization. A monofunctional endcapping reagent, meta-aminophenol, was utilized to control the molecular weight of the oligomers and to install telechelic amine endgroups. The meta-aminophenol endcapped oligomers were reacted with acryloyl chloride to obtain novel crosslinkable poly(arylene ether sulfone) oligomers with acrylamide groups on both ends. The chemical compositions of the functional oligomers were characterized by 1 H NMR spectroscopy to determine the degree of sulfonation and concentrations of acrylamide endgroups. The acrylamide-terminated oligomers were crosslinked with UV radiation in the presence of a multifunctional acrylate and a UV photoinitiator. Transparent, free-standing, dense films were obtained with high gel fractions. FTIR spectroscopy was utilized to observe the progress of the photo-crosslinking reaction. Thin films were cast from either aqueous or water-methanol solutions. The crosslinked disulfonated poly(arylene ether sulfone) networks exhibited reduced water uptake and swelling relative to their linear counterparts. SEM and AFM showed that the photo-crosslinked thin films had smooth surfaces.

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Photopolymerizable Systems

Cited by 10 publications

References 261 publications

Interfacial Surface Properties of Compression Moulded Hydrolysed Polyvinyl Acetate (PVAc) Using Different Release Materials

Interfacial Surface Properties of Compression Moulded Hydrolysed Polyvinyl Acetate (PVAc) Using Different Release Materials

Additive‐Free Green Light‐Induced Ligation Using BODIPY Triggers

Synthesis and photocrosslinking of disulfonated poly(arylene ether sulfone) copolymers for potential reverse osmosis membrane materials

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