Influence of phenoxy-terminated short-chain pendant groups on gas transport properties of cross-linked poly(ethylene oxide) copolymers

Kusuma, Victor A.; Matteucci, Scott; Freeman, Benny D.; Danquah, Michael K.; Kalika, Douglass S.

doi:10.1016/j.memsci.2009.05.043

Cited by 34 publications

(23 citation statements)

References 40 publications

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“…Subsequently, no melting transition was observed, suggesting a lack of crystalline phases thus preventing the xerogel from melting. This phenomenon has previously been observed for other photopolymerised acrylate xerogels [35,40,41]. When incorporating PPG into the hydrogel, the T g value decreased as shown in Fig.…”

Section: Differential Scanning Calorimetrysupporting

confidence: 83%

Modulating the mechanical properties of photopolymerised polyethylene glycol–polypropylene glycol hydrogels for bone regeneration

et al. 2012

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Hydrogels formulated from single polymers are often insufficient in terms of their mechanical properties for use as bone substitute materials. Hence, hydrogels synthesised from combinations of polymers have been investigated to optimise the performance of such materials. In the current study, polypropylene glycol dimethacrylate was added to polyethylene glycol dimethacrylate of a variety of molecular weights and photopolymerised to form a series of hydrogels. Polyethylene glycol and polypropylene glycol have the same chemical structure with the exception of a methyl group on the later. Herein, the influence of the methyl group of polypropylene glycol on the mechanical properties of hydrogels for bone regeneration applications is reported. For both unconfined and cyclic compression testing, results demonstrated that the incorporation of PEGDMA into the precursor improves the compression strength of the hydrogels. For example, in unconfined compression tests the Young's modulus varied between 6.62 ± 0.31 MPa and 8.08 ± 0.81 MPa with the incorporation of PEGDMA 400.

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Section: Differential Scanning Calorimetrysupporting

confidence: 83%

Modulating the mechanical properties of photopolymerised polyethylene glycol–polypropylene glycol hydrogels for bone regeneration

et al. 2012

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“…This hydrogel is inert and therefore suitable for various applications such as diapers, female hygiene products, wound dressings, controlled release drug systems, and solid electrolytes for batteries. [ 6,12,[40][41][42][43] Riberio and Freeman [ 13 ] studied the dilation and sorption processes of carbon dioxide/ethane (CO 2 a concentration range of CO 2 in the gas phase from 10 to 70 mol%. In another study, Claudio and Riberio [ 6,12 ] estimated the PMV of CO 2 and C 2 H 6 in the XLPEO at different temperatures using the binary dilation-sorption data of CO 2 /XLPEO and ethane/XLPEO systems.…”

Section: Co 2 /Ethane/cross-linked Poly(ethylene Oxide) Ternary Systemmentioning

confidence: 99%

Partial Molar Volumes and Thermal Expansion Coefficients as an Explanation for Co-Solvent Effect of Penetrants in Multicomponent Polymer Mixtures

Bashir

Monteil

Kanellopoulos

et al. 2015

Macromol. Chem. Phys.

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Experimental mixed-gas sorption/dilation data and mixture densities estimated by the fi tted Sanchez-Lacombe equation of state have been used to estimate the partial molar volumes (PMV) of gases and polymers in multicomponent mixtures (i.e., ternary) at conditions of industrial relevance. The method developed estimates accurately the PMV and volumetric thermal expansion coeffi cients of various highly soluble gases and polymers in multi component mixtures over a wide range of temperatures, pressures, and gas phase compositions. A comparison of solubility, volumetric thermal expansion coeffi cients, and PMVs of the gases involved in the studied ternary mixtures reveal that, irrespective of the polymer nature, co-solvent effect is caused by the gas with higher solubility in the polymer phase and higher thermal expansion coeffi cient, which provides an explanation to the occurrence of co-solubility effects in multicomponent gases/ polymer mixtures. It has also been shown that the PMV behavior of gases in the ternary mixtures with polymers is different from their PMV behavior in the corresponding binary gas/polymer mixtures, and that the PMV of a gaseous penetrant in a multicomponent system depends on its gas phase concentration.

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“…The Freeman research group has reported on a multitude of crosslinked amorphous PEG-based membranes made with UV-initiated radical photopolymerization of acrylates based on PEG [13][14][15][16]. These membranes show high performance compared to other polymeric CO 2 separation membranes while at the same time employing the inherent advantages of UV-curing such as rapid preparation of large areas of material, no solvents (100% reactive liquid components), energy efficient processing compared to thermal methods, and enormous latitude in formulations due to the variety of commercially-available UV-curable monomers and oligomers [17,18].…”

Section: Introductionmentioning

confidence: 99%

Multifunctional thiols as additives in UV-cured PEG-diacrylate membranes for CO2 separation

Kwisnek

Heinz

Wiggins

et al. 2011

Journal of Membrane Science

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Influence of phenoxy-terminated short-chain pendant groups on gas transport properties of cross-linked poly(ethylene oxide) copolymers

Cited by 34 publications

References 40 publications

Modulating the mechanical properties of photopolymerised polyethylene glycol–polypropylene glycol hydrogels for bone regeneration

Modulating the mechanical properties of photopolymerised polyethylene glycol–polypropylene glycol hydrogels for bone regeneration

Partial Molar Volumes and Thermal Expansion Coefficients as an Explanation for Co-Solvent Effect of Penetrants in Multicomponent Polymer Mixtures

Multifunctional thiols as additives in UV-cured PEG-diacrylate membranes for CO2 separation

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