Rheological Properties of Aqueous Suspensions of Chitin Crystallites

Journal of Colloid and Interface Science
J LiR H Marchessault

Abstract

Rheologically, suspensions of chitin crystallites are found to behave as other molecular liquid crystalline polymers (LCPs). The average hydrodynamic diameter of the crystallites in the suspension at pH 4 is determined to be approximately 80 nm using dynamic light scattering. Conductimetric and pH titration results show that the pKa of the crystallites is 6.3, which is the same as that reported for chitosan. In combination with phase diagrams, flow properties of isotropic, biphasic, and anisotropic chitin suspensions were investigated. For isotropic suspensions, a classical shear thinning behavior of rodlike particles is observed. In the case of biphasic suspensions, a two-regime curve is observed where tactoids first orient, deform, and then break up under a shearing force. Similar to other LCPs, a three-regime flow curve is found for the anisotropic suspensions. The viscosity-concentration curve exhibits a maximum at the phase separation concentration, and this maximum is less distinct with a decrease of the ionic strength. Secondary electroviscous effects due to strong particle-particle interactions influence the viscosity of the suspensions at higher concentrations.

Citations

Aug 21, 2007·European Journal of Pharmaceutics and Biopharmaceutics : Official Journal of Arbeitsgemeinschaft Für Pharmazeutische Verfahrenstechnik E.V·Tomoko OosegiYoshiharu Machida
May 17, 2014·Small·Lessa Kay GrunenfelderDavid Kisailus
Aug 16, 2016·Materials Science & Engineering. C, Materials for Biological Applications·Murat KayaVaida Tubelytė
Dec 14, 2011·Biomacromolecules·Jian-Bing ZengYu-Zhong Wang
Mar 28, 2012·Langmuir : the ACS Journal of Surfaces and Colloids·Yaman BolukVanessa Incani
Oct 6, 2016·Carbohydrate Polymers·Carlos F C JoãoJoão P Borges
Jun 22, 2017·Biomacromolecules·Morihiko YokoiAkira Isogai
Dec 31, 2014·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Jun Araki, Shiho Mishima
Feb 5, 2019·Drug Development and Industrial Pharmacy·Li TaoKrishnaswamy Raghavan
Jan 6, 2021·Journal of Colloid and Interface Science·Emily G FacchineSaad A Khan
Jan 24, 2021·Carbohydrate Polymers·Shaohua GuYali Ji
Feb 6, 2021·Carbohydrate Polymers·Sunil Kumar, Jalal Foroozesh
Mar 27, 2021·Carbohydrate Polymers·Ulises CasadoMirta I Aranguren
Dec 2, 2009·Biomacromolecules·Maria V TzoumakiCostas G Biliaderis
Dec 9, 2004·Chemical Reviews·M N V Ravi KumarA J Domb
Apr 20, 2021·Advanced Materials·Mei-Chun LiMichael J Bortner
Aug 15, 1997·Journal of Colloid and Interface Science·J LiR H Marchessault
Jun 28, 2019·Biomacromolecules·Aurimas NarkeviciusSilvia Vignolini
Apr 25, 2019·Biomacromolecules·Devis MontroniGiuseppe Falini
May 14, 2003·Biomacromolecules·Kalaprasad Gopalan Nair, Alain Dufresne
May 14, 2003·Biomacromolecules·Kalaprasad Gopalan Nair, Alain Dufresne
Oct 20, 2004·Langmuir : the ACS Journal of Surfaces and Colloids·Felipe M CorreiaAna M Carmona-Ribeiro
Oct 7, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Fernando P AraujoAna M Carmona-Ribeiro

❮ Previous
Next ❯

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

© 2021 Meta ULC. All rights reserved