Effect of co-solvent complex on preferential adsorption phenomenon in polyvinyl alcohol ternary solutions

Hong, Po‐Da; Huang, Hsing-Tsai

doi:10.1016/s0032-3861(99)00836-8

Cited by 30 publications

(34 citation statements)

References 30 publications

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“…liquid–liquid phase separation, or form hydrogels through association of polymer chains through a bridging solvent molecule (from their NMP solutions),6 the latter acting as network junctions; it is also worthy of note that water appears to be only a marginally good solvent for PVA (A 2 ≈ 1.4 × 10 4 ; c.f. for DMSO, A 2 ≈ > 20 × 10 4 ) 7…”

Section: (Sub)molecular Polymer Engineeringmentioning

confidence: 99%

Poly(Vinyl Alcohol) Physical Hydrogels: New Vista on a Long Serving Biomaterial

Alves

Jensen

Smith

et al. 2011

Macromolecular Bioscience

209

159

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Poly(vinyl alcohol), PVA, and physical hydrogels derived thereof have an excellent safety profile and a successful history of biomedical applications. However, these materials are hardly in the focus of biomedical research, largely due to poor opportunities in nano- and micro-scale design associated with PVA hydrogels in their current form. In this review we aim to demonstrate that with PVA, a (sub)molecular control over polymer chemistry translates into fine-tuned supramolecular association of chains and this, in turn, defines macroscopic properties of the material. This nano- to micro- to macro- translation of control is unique for PVA and can now be accomplished using modern tools of macromolecular design. We believe that this strategy affords functionalized PVA physical hydrogels which meet the demands of modern nanobiotechnology and have a potential to become an indispensable tool in the design of biomaterials.

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Section: (Sub)molecular Polymer Engineeringmentioning

confidence: 99%

Poly(Vinyl Alcohol) Physical Hydrogels: New Vista on a Long Serving Biomaterial

Alves

Jensen

Smith

et al. 2011

Macromolecular Bioscience

209

159

View full text Add to dashboard Cite

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“…Therefore, the increase of intrinsic viscosity can be attributed to the repulsive intermolecular interactions between PSFQ and CAP in NMP or PSFQ and PVA in NMP, respectively, which increase the excluded volume effects. Moreover, addition of CAP or PVA to the solution of PSFQ favors intramolecular and polymer-solvent interactions, while the CAP or PVA chains dissolved in NMP exhibit the ability to develop interactions of the hydrogen bonds type [48,51], contributing to the specific molecular rearrangement of the system. This changing trend is the effect of the chain conformation modification generated the hydrogen-bonding and also by the specific interactions, including hydrogen-bonding with NMP.…”

Section: Interaction Types Identified In Polyelectrolyte Systemsmentioning

confidence: 99%

“…This changing trend is the effect of the chain conformation modification generated the hydrogen-bonding and also by the specific interactions, including hydrogen-bonding with NMP. In addition, the structural changes of CAP or PVA molecular distribution depend on solutions composition, NMP being known as a typical dipolar aprotic solvent with electron-donor or hydrogen acceptor properties, so that the conformational aspects of the mixtures are determined by hydrogen-bonding presence in the system, along with other types of interactions [51].…”

Section: Interaction Types Identified In Polyelectrolyte Systemsmentioning

confidence: 99%

Ionic polymers based on quaternized polysulfones: hydrodynamic properties of polymer mixtures in solution

Filimon¹,

Dobos²,

Avram³

et al. 2014

Pure and Applied Chemistry

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Hydrodynamic properties developed in a series of mixtures, obtained from quaternized polysulfone and cellulose acetate phthalate or polyvinyl alcohol in N-methyl-2-pyrrolidone, were evaluated by viscometric investigations. Theoretical and experimental aspects concerning the viscometric data for binary polymer/ solvent and ternary polymer/polymer/solvent mixtures have been discussed by the new Wolf model, as a function of the charge density of polyion, structural peculiarity of polymers, and polymer mixture composition. Intrinsic viscosity and also the hydrodynamic parameters obtained by the Wolf method offer new information on the competition between different types of interactions manifested in ternary polymer/polymer/ solvent systems. The complex dependence of viscosity on polymer composition is influenced by conformational changes of constituent polymers from the mixture, as well as by cumulative effects of electrostatic interactions, hydrogen bonding or association phenomena. Additionally, the above-mentioned interactions indicate the compatibility of these polymers over a large composition domain. This study investigates the hydrodynamic functions from the perspective of some newly-issued theories and analyzes the choice of optimal polymer mixtures compositions for specific applications in biomedical domains.

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“…nonsolvent mixture was used (Dondos and Benoit 1973). It was interpreted by the preferential solvation (or preferential adsorption) introduced as ''local'' solvent composition being different from the ''bulk'' composition (Dondos and Benoit 1973;Hong and Huang 2000). These ideas and Flory-Huggins theory were extended by Prigogine-Flory approach which takes into account the interactions between the molecular surfaces and considers molecular surface/volume ratios of the polymer and solvent molecules (Pouchly and Patterson 1976;Horta 1979).…”

Section: Influence Of Water On Cellulose-emimac Solution Viscosity Anmentioning

confidence: 99%

Influence of water on cellulose-EMIMAc solution properties: a viscometric study

Sescousse

Budtova

2011

Cellulose

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International audienceThe influence of water on cellulose dissolved in 1-ethyl-3-methylimidazolium acetate (EMIMAc) is analysed by measuring steady state viscosity of dilute solutions. The goal is to determine: (a) the maximal water content allowing keeping cellulose dissolved (in dilute regime) and (b) the influence of water on solution flow and cellulose hydrodynamic properties. Mixing EMIMAc and water is exothermal and EMIMAc-water viscosity does not obey a logarithmic mixing rule suggesting strong interactions between the components. Newtonian flow of cellulose-EMIMAc-water solutions was recorded at water concentrations below 15 wt% and a shear thinning was observed for higher water content. It was suggested that above 15 wt% water cellulose is not completely dissolved: swollen aggregates form a sort of a "suspension" which is structuring under shear. Cellulose intrinsic viscosity showed a peak at 10 wt% water-90 wt% EMIMAc. It was hypothesised that the addition of water leads to the formation of large cellulose aggregates due to the preferential cellulose-cellulose interaction

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Effect of co-solvent complex on preferential adsorption phenomenon in polyvinyl alcohol ternary solutions

Cited by 30 publications

References 30 publications

Poly(Vinyl Alcohol) Physical Hydrogels: New Vista on a Long Serving Biomaterial

Poly(Vinyl Alcohol) Physical Hydrogels: New Vista on a Long Serving Biomaterial

Ionic polymers based on quaternized polysulfones: hydrodynamic properties of polymer mixtures in solution

Influence of water on cellulose-EMIMAc solution properties: a viscometric study

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