Thermogravimetric analysis of chitins of different origin

Stawski, Dawid; Rabiej, Stanisław; Herczyńska, Lucyna; Draczyński, Zbigniew

doi:10.1007/s10973-007-8691-6

Cited by 68 publications

(36 citation statements)

References 13 publications

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“…In the second and larger process decomposition of acetylated units occurs, including polymer deacetylation. The Chi decomposition temperature range observed was in agreement with previously reported for other Chi sources between 300-460 °C [58]. On the contrary, it could be observed that Chi-P shown a complex decomposition process having three weight losses, which is a typical behavior of block copolymers.…”

Section: Chemical Characterization Of Chitin (Chi) and Chitin Phosphasupporting

confidence: 90%

Electrocrystallization of CaCO3 Crystals Obtained through Phosphorylated Chitin

2018

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Abstract:A phosphorylated chitin (Chi-P) derivative was synthesized and its chemical structure was verified with Fourier-transform infrared spectroscopy (FTIR), elemental analysis, and thermogravimetric techniques (TGA). The influence of Chi-P used as a solid template through in vitro electrocrystallization (EC) supported on an indium zinc oxide (ITO) surface on the growth of calcium carbonate (CaCO 3 ) was studied. CaCO 3 crystals through EC essays were also compared with crystals obtained with the gas diffusion (GD) method. Scanning electron microscopy (SEM), energy dispersive X-ray spectrometry (EDS), chronopotentiometry, Raman, and powder X-ray diffractometry (XRD) characterized all resultant inorganic particles. Our findings revealed that the EC method selectively controlled the coexistence of truncate calcite and the metastable phase of vaterite. The crystals' morphology reflects the electrostatic interaction of phosphate moieties from Chi-P onto CaCO 3 crystals through both EC and GD crystallization methods. We believe that the EC method represents a viable electrochemical approach for studying different inorganic minerals and could be useful as an in vitro classical crystallization method for the design of advanced inorganic materials with desirable shapes and properties.

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Section: Chemical Characterization Of Chitin (Chi) and Chitin Phosphasupporting

confidence: 90%

Electrocrystallization of CaCO3 Crystals Obtained through Phosphorylated Chitin

2018

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“…Stawski et al [49] in their work compared the thermal properties of chitins from different marine sources using a thermogravimetric technique. They showed that thermal resistance depends on the source used, and can be arranged as follows: krill chitin > shrimp chitin > crab chitin > squid chitin.…”

Section: Thermal Stability Of Chitinmentioning

confidence: 99%

“…However, finding an explanation for differences in thermal stability in α-chitin from different sources is a more challenging task. Stawski et al [49] showed that the size and perfection of crystallites are the most important factors influencing the thermal stability of α-chitin. It has been confirmed by FTIR (Fourier transform infrared spectroscopy) that sponge chitin is stable at 300 °C, even after 24 h of heating [60].…”

Section: Thermal Stability Of Chitinmentioning

confidence: 99%

Poriferan Chitin as a Versatile Template for Extreme Biomimetics

et al. 2015

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Abstract:In this mini-review, we shall first cover a short history of the discovery of chitin isolated from sponges; as well as its evolutionarily ancient roots. Next, we will delve into the unique structural, mechanical, and thermal properties of this naturally occurring polymer to illuminate how its physicochemical properties may find uses in diverse areas of the material sciences. We show how the unique properties and morphology of sponge chitin renders it quite useful for the new route of "Extreme Biomimetics"; where high temperatures and pressures allow a range of interesting bioinorganic composite materials to be made. These new biomaterials have electrical, chemical, and material properties that have applications in water filtration, medicine, catalysis, and biosensing. OPEN ACCESSPolymers 2015, 7 236

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“…Thermogravimetric analysis of purified non-mineralized chitin revealed that this aminopolysaccharide may be stable up to 360 • C [19,20]. Surface metallization of chitin requires temperatures up to 300 • C and pH between 1 and 12 [21,22].…”

Section: Support Of Ectopic Cartilage Formation By Chondrocyte-seededmentioning

confidence: 99%