Physico-chemical, thermal, and mechanical approaches for the characterization of solubilized and solid state chitosans.

Archive ouverte : Article de revue

Mati-Baouche, Narimane | Baynast, Hélène De | Vial, Christophe | Audonnet, Fabrice | Sun, Shengnan | Petit, Emmanuel | Pennec, Fabienne | Prevot, Vanessa | Michaud, Philippe

Edité par HAL CCSD ; Wiley

International audience. This study was conducted on the both solid and solubilized chitosans to propose an approach for the physico-chemical, thermal and mechanical characterizations of this polysaccharide. The polysaccharide used was a 90% deacetylated chitosan having a molecular weight of 98.4 kDa. The flow property of chitosan solutions was evaluated revealing a shear-thinning behavior. The thermal characterization was carried out by studying heat specific capacity, glass transition temperature, and thermal conductivity on chitosan dried specimens (solid state). Their Tg were measured by DSC and confirmed by DMA at 102 and 122°C depending on concentrations of initial chitosan solutions. The mechanical characterization was conducted by analyzing Young modulus, tensile strength, and elongation at break of chitosan specimens. They exhibited a higher elongation at break and a lower tensile strength when made from high concentrated chitosan solution (9% w/v). Differences in mechanical behavior of specimens were explained by differences of crystallinity.

Consulter en ligne

Suggestions

Du même auteur

Pourquoi le droit canonique ? / Emmanuel Petit | Petit, Emmanuel (1973-....) - prêtre. Auteur

Pourquoi le droit canonique ? / Emmanuel Petit

Livre | Petit, Emmanuel (1973-....) - prêtre. Auteur | 2021 - Nouvelle édition

"Ce livre entreprend de répondre à la question formulée dans son titre. L'église est une organisation sociale qui, comme tout autre, est régie par un droit. Ce droit s'est forgé au fil des siècles en fonction des contextes et des ...

Prebiotic Activity of Poly- and Oligosaccharides Obtained from Plantago major L. Leaves | Lukova, Paolina

Prebiotic Activity of Poly- and Oligosaccharides Obtained from Plantago maj...

Archive ouverte: Article de revue

Lukova, Paolina | 2020-04-11

International audience. The aim of the present study was to evaluate the prebiotic potential of Plantago major L. leaves water-extractable polysaccharide (PWPs) and its lower molecular fractions. The structure of PW...

Separation and fractionation of exopolysaccharides from Porphyridium cruentum | Patel, Anil Kumar

Separation and fractionation of exopolysaccharides from Porphyridium cruent...

Archive ouverte: Article de revue

Patel, Anil Kumar | 2013-10

International audience

Du même sujet

Penser les frontières de l'Europe du XIXe au XXIe siècle : élargissement et union : approches historiques : [actes du colloque organisé les 27, 28 et 29 mars 2003 à Paris] / [organisé par l'École normale supérieure, avec la collaboration de l'Observatoire géopolitique des régions européennes de l'université de Marne-la-Vallée] | Pécout, Gilles (1961-....). Directeur de publication

Penser les frontières de l'Europe du XIXe au XXIe siècle : élargissement et...

Livre | Pécout, Gilles (1961-....). Directeur de publication | 2004 - Publication actualisée des actes du colloque

Faut-il donner à l'Europe nouvelle des frontières précises ? L'actualité de l'élargissement de l'Union européenne invite à enrichir la réflexion en privilégiant la perspective historique. Un peu de recul s'impose en effet pour dép...

Three novel rhamnogalacturonan I- pectins degrading enzymes from Aspergillus aculeatinus: Biochemical characterization and application potential | Lemaire, Adrien

Three novel rhamnogalacturonan I- pectins degrading enzymes from Aspergillu...

Archive ouverte: Article de revue

Lemaire, Adrien | 2020-11-15

International audience

Non-Enzymatic Glucose Sensing Using Carbon Quantum Dots Decorated with Copper Oxide Nanoparticles | Maaoui, Houcem

Non-Enzymatic Glucose Sensing Using Carbon Quantum Dots Decorated with Copp...

Archive ouverte: Article de revue

Maaoui, Houcem | 2016-10-18

International audience. Perturbations in glucose homeostasis is critical for human health, as hyperglycemia (defining diabetes) leads to premature death caused by macrovascular and microvascular complications. Howev...

A Deeper Investigation of Drug Degradation Mixtures Using a Combination of MS and NMR Data: Application to Indapamide | Palaric, Cécile

A Deeper Investigation of Drug Degradation Mixtures Using a Combination of ...

Archive ouverte: Article de revue

Palaric, Cécile | 2019-05

International audience. A global approach that is based on a combination of mass spectrometry (MS) and nuclear magnetic resonance (NMR) data has been developed for a complete and rapid understanding of drug degradat...

In Vitro Assessment of the Impact of Industrial Processes on the Gastrointestinal Digestion of Milk Protein Matrices Using the INFOGEST Protocol | Atallah, Nathalie

In Vitro Assessment of the Impact of Industrial Processes on the Gastrointe...

Archive ouverte: Article de revue

Atallah, Nathalie | 2020-11

International audience. The goal of this study was to determine the impact of industrial processes on the digestion of six milk protein matrices using the harmonized INFOGEST in vitro static digestion protocol. Firs...

The Burning Coal Heap at La Ricamarie, Loire Coal Basin, France | Thiéry, V.

The Burning Coal Heap at La Ricamarie, Loire Coal Basin, France

Archive ouverte: Type de document indéfini

Thiéry, V. | 2018

International audience. [No abstract available]

Chargement des enrichissements...