Pressure impact of autoclave treatment on water sorption and pectin composition of flax cellulosic-fibres

Alix, Sébastien; Colasse, Laurent; Morvan, Claudine; Lebrun, Laurent; Marais, Stéphane

doi:10.1016/j.carbpol.2013.10.092

Cited by 32 publications

(24 citation statements)

References 39 publications

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“…and standard deviation ( ˆ ) of the fitted constants. for fabricating high strength composites (Alix et al, 2012(Alix et al, , 2014Bismarck et al, 2002). Flax was shown to exhibit a significantly greater level of swelling than viscose as well as a discernible rotation, confirming previous observation (Anonymous, 1923).…”

Section: Tablesupporting

confidence: 85%

“…An early study of the sorption of water vapour in flax in conditions of 88% relative humidity, noted that moisture uptake occurred in a series of distinct parabolic steps over a long period of time (Davies & Eyre, 1923). More recently, due to the deleterious effect of moisture uptake by flax-reinforced composites (Stamboulis, Baillie, Garkhail, Van Melick, & Peijs, 2000), work has concentrated on the moisture sorption properties of flax and changes to these properties through various treatments (Alix et al, 2012;Alix, Colasse, Morvam, Lebrun, & Marais, 2014;Bismarck et al, 2002;Gouanvé, Marais, & Bessadok, 2006). The kinetics of moisture sorption of flax was studied using the Fickian diffusion model for a complete cylinder (Gouanvé, Marais, Bessadok, Langevin, & Metayer, 2007).…”

Section: Introductionmentioning

confidence: 98%

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Modelling of wicking and moisture interactions of flax and viscose fibres

Stuart

McCall

Sharma

et al. 2015

Carbohydrate Polymers

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Section: Tablesupporting

confidence: 85%

Section: Introductionmentioning

confidence: 98%

Modelling of wicking and moisture interactions of flax and viscose fibres

Stuart

McCall

Sharma

et al. 2015

Carbohydrate Polymers

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“…Previous studies obtained adequate bond strength to composite resin cements when PEEK surfaces were pretreated and conditioned using adhesive systems contains MMA-monomers. [18][19][20][21][22][23][24][25] Variations in the composition of CAD/CAM polymers aiming to improve mechanical properties may affect water absorption 9,26,27 and dimensional change. These alterations can be explained by fluid absorption in the polymer matrix due to molecule polarity, especially within the first few days, leading to an overall imbalance between the intermolecular forces.…”

Section: Introductionmentioning

confidence: 99%

Physicomechanical characterization of polyetheretherketone and current esthetic dental CAD/CAM polymers after aging in different storage media

Liebermann

Wimmer

Schmidlin

et al. 2016

The Journal of Prosthetic Dentistry

165

126

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STATEMENT OF PROBLEM: Polyetheretherketone (PEEK) can be used to support fixed dental prostheses. However, information about physicomechanical characterization is still scarce. PUR-POSE: The purpose of this in vitro study was to assess effects of different aging regimens/durations on roughness, solubility, water absorption, Martens hardness (HM), and indentation modulus/EIT on different computer-aided design and computer-aided manufacturing (CAD/CAM) polymers. MATERIAL AND METHODS: Forty standardized specimens of the following materials were fabricated: PEEK: Dentokeep (DK); hybrid material: VITA Enamic (EN); composite resins: LAVA Ultimate (LU) and an experimental CAD/CAM nanohybrid-composite resin (EX); poly(methyl methacrylate) (PMMA)-based: VITA CAD-Temp (CT); Telio CAD (TC), artBloc Temp (AT), and ZENOTEC ProFix (ZP). A nanofilledpolymer for interim restorations, Protemp 4 (CG), served as the control group. Specimens were stored in sodium chloride, artificial saliva, physiological saliva, and distilled water at 37°C for 1, 7, 14, 28, 90, and 180 days. Roughness, water absorption, HM, and EIT were investigated after each storage period; solubility was determined after 180 days only. Data were analyzed using weighted 3/2/1-way ANOVA and the post hoc Scheffé tests (=.05). RESULTS: Storage media had no effect on surface roughness and water absorption. Physiological saliva revealed the highest significant impact on solubility followed by artificial saliva, sodium chloride, and distilled water. Water absorption increased significantly with storage duration. PEEK showed the lowest solubility and water absorption values. The highest solubility was observed for the conventional polymer CG, and the highest water absorption was found for the composite LU. PMMA-based TC, ZP, CG, and AT showed the lowest HM and indentation modulus, followed by CT, and PEEK. The highest values were observed for the hybrid material EN, followed by LU and EX. CONCLUSIONS: The hardness parameters of PEEK were comparable with those of PMMA-based materials. group. Specimens were stored in sodium chloride, artificial saliva, physiological saliva, and distilled water at 37°C for 1, 7, 14, 28, 90, and 180 days. Roughness, water absorption, HM, and E IT were investigated after each storage period; solubility was determined after 180 days only. Data were analyzed using weighted 3/2/1-way ANOVA and the posthoc Scheffé tests (α=05).Results. Storage media had no effect on surface roughness and water absorption.Physiological saliva revealed the highest significant impact on solubility followed by artificial saliva, sodium chloride, and distilled water. Water absorption increased significantly with storage duration. PEEK showed the lowest solubility and water absorption values. The highest ! ! ! 2! solubility was observed for the conventional polymer CG, and the highest water absorption was found for the composite LU. PMMA-based TC, ZP, CG, and AT showed the lowest HM and indentation modulus, followed by CT, and PEEK. The highest values were ...

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“…The HT treated sample showed a decrease of 18% in the elastic modulus compared to the yarns in the as received condition. This happened because the pectin was extracted due to high pressure impact while the fibers undergo the hydrothermal treatment [34,35]. The pectin binds the cellulose micro-fibrils together and reduces their movements.…”

Section: Mechanical Properties Of the Fibersmentioning

confidence: 99%