Examples of Natural Composites and Composite Structures

Murr, Lawrence E.

doi:10.1007/978-3-319-01815-7_25

Cited by 4 publications

(3 citation statements)

References 19 publications

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“…[12][13][14][15] While most recombinant PBMs typically comprise a single purified protein-an approach crucial for studying material sequence-structure-property relationships-natural PBMs commonly contain a mixture of different proteins with unique attributes in their amino acid compositions, secondary structures, and molecular weights (MWs). [16][17][18][19][20][21][22][23][24] The overall integrity and properties of such composite materials stem from the intricate interplay among these distinct component proteins. For instance, the silk cocoon filaments spun by the Bombyx mori silkworm comprise sericin and fibroin proteins.…”

Section: Introductionmentioning

confidence: 99%

Blending recombinant amyloid silk proteins generates composite fibers with tunable mechanical properties

Subramani,

Li,

Lee

et al. 2024

Mater. Adv.

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Section: Introductionmentioning

confidence: 99%

Blending recombinant amyloid silk proteins generates composite fibers with tunable mechanical properties

Subramani,

Li,

Lee

et al. 2024

Mater. Adv.

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“…The best-known natural composite is the bone tissue that is mainly composed of hydroxyapatite and collagen [ 3 ]. Hydroxyapatite (HAp) is one of the most used biomaterials in the medical field [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Biocomposite Coatings Doped with Magnesium and Zinc Ions in Chitosan Matrix for Antimicrobial Applications

et al. 2023

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Hydroxyapatite doped with magnesium and zinc in chitosan matrix biocomposites have great potential for applications in space technology, aerospace, as well as in the biomedical field, as a result of coatings with multifunctional properties that meet the increased requirements for wide applications. In this study, coatings on titanium substrates were developed using hydroxyapatite doped with magnesium and zinc ions in a chitosan matrix (MgZnHAp_Ch). Valuable information concerning the surface morphology and chemical composition of MgZnHAp_Ch composite layers were obtained from studies that performed scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), energy-dispersive X-ray spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR), metallographic microscopy, and atomic force microscopy (AFM). The wettability of the novel coatings, based on magnesium and zinc-doped biocomposites in a chitosan matrix on a titanium substrate, was evaluated by performing water contact angle studies. Furthermore, the swelling properties, together with the coating’s adherence to the titanium substrate, were also analyzed. The AFM results emphasized that the composite layers exhibited the surface topography of a uniform layer, and that there were no evident cracks and fissures present on the investigated surface. Moreover, antifungal studies concerning the MgZnHAp_Ch coatings were also carried out. The data obtained from quantitative antifungal assays highlight the strong inhibitory effects of MgZnHAp_Ch against C. albicans. Additionally, our results underline that after 72 h of exposure, the MgZnHAp_Ch coatings display fungicidal features. Thus, the obtained results suggest that the MgZnHAp_Ch coatings possess the requisite properties that make them suitable for use in the development of new coatings with enhanced antifungal features.

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“…Many composite materials found in nature contain both biopolymers and crystalline phases, such as natural fibers, teeth, bones, and shells. , The close interaction between the organic/inorganic entities endows the composite structures with biocompatibility and enhanced mechanical properties. The nucleation and growth pathway of inorganic crystals in biocomposites are controlled by their interaction with the organic phase, being directly related to the affinity of organic material functional groups. , …”

Section: Introductionmentioning

confidence: 99%

Hydrophobic Composites Designed by a Nonwoven Cellulose-Based Material and Polymer/CaCO₃ Patterns with Biomedical Applications

Vasiliu¹,

Zaharia²,

Bazarghideanu³

et al. 2021

Biomacromolecules

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Herein, we report a simple method to obtain hydrophobic surfaces by surface modification with calcium carbonate via diffusion-controlled crystallization using a cheap, versatile, and super-hydrophilic cellulose-based nonwoven material (NWM) as the substrate. To control the CaCO3 crystal growth, the ammonium carbonate diffusion method was applied in the presence of polyanions [poly(acid acrylic), poly(2-acrylamido-2-methylpropanesulfonic acid), and a copolymer which contains 55 mol % 2-acrylamido-2-methylpropanesulfonic acid and 45 mol % acrylic acid] or nonstoichiometric polyelectrolyte complexes with polycations [poly(allylamine hydrochloride) and chitosan] on a pristine NWM and on polycation-treated surfaces. The surface morphology obtained by calcite growth under surface or environmental functional groups’ influence and the hydrophilic/hydrophobic character of the composite materials were followed and compared to that of the starting material. The obtained composite materials become hydrophobic, having a contact angle in the range of 110–135°. The capacity of tetracycline sorption and release by selected modified surfaces were followed and compared to the untreated NWM. Also, the biological properties were evaluated in terms of biocompatibility, antibacterial activity, and antifouling capability.

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Examples of Natural Composites and Composite Structures

Cited by 4 publications

References 19 publications

Blending recombinant amyloid silk proteins generates composite fibers with tunable mechanical properties

Blending recombinant amyloid silk proteins generates composite fibers with tunable mechanical properties

Biocomposite Coatings Doped with Magnesium and Zinc Ions in Chitosan Matrix for Antimicrobial Applications

Hydrophobic Composites Designed by a Nonwoven Cellulose-Based Material and Polymer/CaCO₃ Patterns with Biomedical Applications

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Examples of Natural Composites and Composite Structures

Cited by 4 publications

References 19 publications

Blending recombinant amyloid silk proteins generates composite fibers with tunable mechanical properties

Blending recombinant amyloid silk proteins generates composite fibers with tunable mechanical properties

Biocomposite Coatings Doped with Magnesium and Zinc Ions in Chitosan Matrix for Antimicrobial Applications

Hydrophobic Composites Designed by a Nonwoven Cellulose-Based Material and Polymer/CaCO3 Patterns with Biomedical Applications

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Hydrophobic Composites Designed by a Nonwoven Cellulose-Based Material and Polymer/CaCO₃ Patterns with Biomedical Applications