Temperature Induced Solubility Transitions of Various Poly(2-oxazoline)s in Ethanol-Water Solvent Mixtures

Lambermont-Thijs, Hanneke M. L.; Kuringen, Huub P. C. van; Put, Jeroen P. W. van der; Schubert, Ulrich S.; Hoogenboom, Richard

doi:10.3390/polym2030188

Cited by 68 publications

(65 citation statements)

References 57 publications

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“…While the E moduli decreased linearly with an increasing number of carbon-atoms in the side-chain of amorphous polymers, semicrystalline polymers by contrast do not display any correlation between the E modulus and the length of the side-chain. Schubert, Hoogenboom and co-workers also reported on the solubility transitions in ethanol-water binary mixtures for a series of homopoly(2-oxazoline)s, comprising the eight congeners of the just-above mentioned study as well as p i PrOx, p i BuOx, p n OctOx, pPhOx, and pBzOx [135]. As expected, the solubility of the polymers correlated with the length of the side-chain.…”

Section: Synthesis Of Monomers and The Corresponding Poly(2-oxazoline)smentioning

confidence: 62%

Design Strategies for Functionalized Poly(2-oxazoline)s and Derived Materials

2013

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Abstract:The polymer class of poly(2-oxazoline)s currently is under intensive investigation due to the versatile properties that can be tailor-made by the variation and manipulation of the functional groups they bear. In particular their utilization in the biomedic(in)al field is the subject of numerous studies. Given the mechanism of the cationic ring-opening polymerization, a plethora of synthetic strategies exists for the preparation of poly(2-oxazoline)s with dedicated functionality patterns, comprising among others the functionalization by telechelic end-groups, the incorporation of substituted monomers into (co)poly(2-oxazoline)s, and polymeranalogous reactions. This review summarizes the current state-of-the-art of poly(2-oxazoline) preparation and showcases prominent examples of poly(2-oxazoline)-based materials, which are retraced to the desktop-planned synthetic strategy and the variability of their properties for dedicated applications.

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Section: Synthesis Of Monomers and The Corresponding Poly(2-oxazoline)smentioning

confidence: 62%

Design Strategies for Functionalized Poly(2-oxazoline)s and Derived Materials

2013

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“…Finally, a study was recently reported by Hoogenboom and Schubert on the solubility behavior of poly(2-(n-alkyl)-2-oxazoline) in ethanol-water solvent mixtures clearly demonstrating the effect of side-chain length on the solubility [33]. Poly(2-oxazoline)s with methyl, ethyl, and propyl side chains were found to be soluble in all possible combinations of water and ethanol, whereby poly(2-(n-propyl)-2-oxazoline) revealed LCST behavior in water rich solvent mixtures.…”

Section: Systematical Variations In Side-chain Lengthmentioning

confidence: 66%

Poly(2‐oxazoline)s based on fatty acids

Hoogenboom

2010

Euro J Lipid Sci & Tech

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Poly(2-oxazoline)s are an interesting class of synthetic poly(amide) s that can be prepared by living cationic ring-opening polymerization. The properties of poly(2-oxazoline) s can be tuned by variation of the 2-substituent of the 2-oxazoline monomer. In this contribution the utilization of fatty acids as side chains for poly(2-oxazoline) s is highlighted. The incorporation of such long aliphatic side-chains results in hydrophobic crystalline poly(2-oxazoline) s that are often applied for the preparation of amphiphilic structures as well as for low surface energy and low adhesive coatings. The most popular fatty-acid based poly(2-oxazoline) s are the saturated poly(2-nonyl-2-oxazoline) and poly(2-undecyl-2-oxazoline) as well as the unsaturated poly(2-decenyl-2-oxazoline) and poly(2-"soy alkyl''-2-oxazoline)

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“…[103] The ethanol content required to induce UCST transitions increases with increasing hydrophobicity of the polymer side chains. The evolution of the UCST cloud points was ascribed to the hydrophilic-hydrophobic balance of the side groups of the polymers on the one hand and the ethanol-water solvent structure on the other hand (see section 2).…”

Section: 2mentioning

confidence: 99%