Characterisation of the surface Lewis acid–base properties of poly(butylene terephthalate) by inverse gas chromatography

Santos, José Manuel Riesco; Fagelman, K; Guthrie, James T.

doi:10.1016/s0021-9673(02)00890-7

Cited by 58 publications

(35 citation statements)

References 9 publications

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“…The physicochemical properties of all probes used in IGC calculations and the theory of IGC are given elsewhere (Belgacem 2000;Carvalho et al 2005a;Jacob and Berg 1994;Shen and Parker 1999;Dorris and Gray 1980;Fowkes 1987;Kunaver et al 2004;Matuana et al 1999;Santos et al 2002, Santos and Guthrie 2005, Schultz et al 1987.…”

Section: Methodsmentioning

confidence: 99%

Inverse gas chromatography analysis of spruce fibers with different lignin content

Peterlin¹,

Planinšek

Moutinho

et al. 2010

Cellulose

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Unbleached TMP spruce fibers were stepwise delignified by KMnO 4 /H 2 SO 4 and five partly delignified samples were obtained. Fibers were characterized in terms of carboxylic groups, lignin and hemicelluloses content. IGC measurements were performed in the untreated fibers and in the five delignified fiber samples, as well as in microcrystalline cellulose (MCC). Different parameters, such as the dispersive component of the surface free energy (c a of the acidic probes decrease with the delignification whereas those of the basic probes increase, pointing to a rather acidic character of the fibers due to the increase of the relative amount of the carbohydrates. The values for MCC corroborate these findings. Despite the substantial variation in the carboxylic group content during delignification, no clear tendencies were detected regarding the affinity with the basic probes.

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Section: Methodsmentioning

confidence: 99%

Inverse gas chromatography analysis of spruce fibers with different lignin content

Peterlin¹,

Planinšek

Moutinho

et al. 2010

Cellulose

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“…Dispersion forces still exercise a great influence on the behaviour of multicomponent systems and their contribution is not to be neglected when interpreting property data and when selecting materials for polymeric compositions [11,105]. The case study presented is based on the research work carried out at our laboratories, concerning the phase separation and phase preferences phenomena that occur in multicomponent polymeric systems [75,148,149].…”

Section: Lewis Acid-base Interaction Numbers From Igc Evaluationsmentioning

confidence: 99%

“…(a) Flory-Huggins solubility parameters [13,14,64,[69][70][71][72]; (b) crystallinity of semi-crystalline polymers [63,70,73,74]; (c) phase separation phenomena in immiscible polymer blends [69,[75][76][77][78]; (d) surface/bulk composition differences in polymeric systems [64,70,73,79]; (e) surface roughness (nanorugosity) of solids [66,80]; (f) surface areas of phase domains and molecular areas [73,74,81]; (g) surface energy of solids (dispersive and specific components of the surface free energy, enthalpy and entropy of adsorption) [67,75,[82][83][84][85]; (h) infinite dilution activity coefficients [86]; (i) glass transition temperature, T g and melting temperature, T m , of polymers [74]; (j) barrier properties of polymeric systems [73].…”

Section: Introduction To Inverse Gas Chromatography (Igc)mentioning

confidence: 99%

Analysis of interactions in multicomponent polymeric systems: The key-role of inverse gas chromatography

Santos

Guthrie

2005

Materials Science and Engineering: R: Reports

107

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The properties of a polymeric system are a consequence of the interactions that occur between the various components of these complex systems. These components may vary significantly in terms of chemical nature (e.g. organic/inorganic), physical properties (e.g. particle size, surface area, molecular weight), structural characteristics and proportion in the formulations composition. This review paper addresses the major approaches in use regarding the analysis of the interactions that occur between the polymeric system components and the use of such approaches in the interpretation of the chemical, physical and thermodynamic properties of these systems. Special attention is given to the technique of inverse gas chromatography.A case study is presented, where use was made of inverse gas chromatography to characterize thermodynamically the surface of the major components of pigmented PC/PBT blends. The concept of Lewis acidity/basicity was used in the interpretation of the intermolecular interactions nature and potential in these blends, as encountered in phase separation and phase preferences phenomena and as expressed in the morphology, the physical and the mechanical properties of these commercially important composites. #

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“…21,[64][65][66] These analyses provided basis for an interpretation of the phase separation and the phase preferences that exist in these polymer blends and of the consequences to their physical properties and to their mechanical properties. The IGC characterisation of the major materials involved allowed for an evaluation of the interaction potential of C. I. Pigment Blue 28 with the remaining components of the pigmented composites.…”

Section: Intermolecular Interactions In Pigmented Pc-pbt-mbs Blendsmentioning

confidence: 99%

Polymer blends: the PC–PBT case

Santos

Guthrie

2006

J. Mater. Chem.

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Binary polymer alloys represent a fast growing sector of the plastics industry. They can result in new materials exhibiting high degrees of synergism in behaviour and/or materials with optimal cost/performance. >Please check the proof of your paper carefully. Your proof will not be read in detail by staff after you have returned it to us. It is your responsibility to ensure that the proof has been read carefully. Translation errors between word-processor files and typesetting systems can occur so the whole proof needs to be read even if an electronic file has been supplied. Please pay particular attention to: tabulated material (this may have been rekeyed); equations; numerical data; figures and graphics; and references. If you have not already indicated the corresponding author(s) please mark their name(s) with an asterisk. Please fax or e-mail your corrections to us. When returning the proof by fax please also include a list detailing the corrections to be made. If responding by e-mail please send only a list of corrections -do not make any changes directly to the pdf file.This proof reflects the content and general style of the paper without the stylistic complexity of the final printed page; however, the only differences should be minor layout changes such as different line breaks, tables being double column instead of single column and improvements in graphic placement.We will endeavour to publish the article electronically on the RSC web site as soon as possible after we receive your corrections. NB: No late corrections can be made hence please ensure that only your final corrections are notified to us.Please return your final corrections, where possible within 48 hours of receipt, to:Serials Production, The Royal Society of Chemistry, Tel: +44 (0)1223 432345; Fax: +44 (0)1223 432160; E-mail: proofs@rsc.org Reprints -Electronic (PDF) reprints will be provided free of charge to the corresponding author. Enquiries about purchasing paper reprints should be addressed to: Production Operations Department (prodops@rsc.org). Costs for reprints are below: = An example of commercially important binary polymer blends is that of PC-PBT composites. The current knowledge of the physical, mechanical and chemical properties of these blends is reviewed and updated in the light of interpretations based on Lewis acid-base intermolecular interactions, as quantified by inverse gas chromatography, carried out under infinite dilution conditions. Reprint costs

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Characterisation of the surface Lewis acid–base properties of poly(butylene terephthalate) by inverse gas chromatography

Cited by 58 publications

References 9 publications

Inverse gas chromatography analysis of spruce fibers with different lignin content

Inverse gas chromatography analysis of spruce fibers with different lignin content

Analysis of interactions in multicomponent polymeric systems: The key-role of inverse gas chromatography

Polymer blends: the PC–PBT case

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