Silk fibroin directs the formation monetite nanocrystals and their assembly into hierarchical composites

2021 ◽  
Author(s):  
Ying Huang ◽  
Hao Xie ◽  
Weijian Fang ◽  
Zhaoyong Zou ◽  
Zhengyi Fu
Keyword(s):  
Composite Materials ◽  
Silk Fibroin ◽  
Organic Matrix ◽  
Nucleation And Growth ◽  
Inorganic Crystals ◽  
Hierarchical Composites

Natural biominerals are usually composite materials produced through mineralization of inorganic crystals within an organic matrix. Silk fibroin is known to be capable of directing the nucleation and growth of...

Embedding in-plane aligned MOF nanoflakes in silk fibroin for highly enhanced output performance of triboelectric nanogenerator

2021 ◽  
Author(s):  
Zixi Chen ◽  
Yule Cao ◽  
Weifeng Yang ◽  
Lin An ◽  
Hongwei Fan ◽  
...  
Keyword(s):  
Composite Materials ◽  
Silk Fibroin ◽  
Triboelectric Nanogenerator ◽  
Output Performance ◽  
Triboelectric Nanogenerators

Embedding active fillers into polymers to construct composite materials is an effective way to enhance the output performance of triboelectric nanogenerators (TENGs). Among various kinds of fillers, 2D fillers showed...

Genetic Coding in Biomineralization of Microlaminate Composites

1992 ◽  
Vol 292 ◽  
Author(s):  
Daniel E. Morse ◽  
Marios A. Cariolou ◽  
Galen D. Stucky ◽  
Charlotite M. Zaremba ◽  
Paul K. Hansma
Keyword(s):  
Organic Matrix ◽  
Nucleation And Growth ◽  
Direct Crystallization ◽  
Basic Principles ◽  
Shell Matrix ◽  
Additional Protein ◽  
Flexible Deformation ◽  
Abalone Shell ◽  
Crystalline Domains ◽  
Present Understanding

AbstractBiomineralization is precisely controlled by complex templating relationships ultimately encoded in the genes. In the formation of the molluscan shell, polyanionic pleated sheet proteins serve as templates for the nucleation and epitaxial growth of calcium carbonate crystalline domains to yield microlaminate composites of exceptional strength and crystal ordering. The strength and fracture-resistance of these composites far exceed those of the minerals themselves, as a result of both the capacity for flexible deformation of the organic matrix layers and the retardation of crack propagation at each mineral-organic interface. The basic principles controlling low temperature biosynthesis of these materials thus are of both fundamental and applied importance. The abalone shell consists of microlaminates with a remarkable regularity of lamina thickness (ca. 0.5 micron), the formation of which defies present understanding. We have found that shells of abalone larvae formed prior to metamorphosis contain only aragonite, whereas the adult shell made after metamorphosis contains both aragonite and calcite. This transition is accompanied by a switch in genetic expression of the template proteins, suggesting that the premetamorphic protein may serve as a template for aragonite nucleation and growth, while template proteins synthesized after metamorphosis may direct crystallization of calcite. These analyses are based on improvements we recently reported for the detection and purification of proteins from the demineralized shell matrix. Genetic cloning experiments now in progress are aimed at discovering additional protein sequences responsible for the programmed control of crystal phase termination, since it is the termination and reinitiation of mineralization that is responsible for the regularity of highly ordered microlaminates produced in nature.

Processing and Characterization of New Organic Matrix for Composite Materials Based on Acrylated Epoxidized Vegetable Oils

2012 ◽  
Vol 498 ◽  
pp. 201-206
Author(s):  
T. Boronat ◽  
J.M. España ◽  
I. Rico ◽  
O. Fenollar ◽  
R. Balart
Keyword(s):  
Composite Materials ◽  
Soybean Oil ◽  
Organic Matrix ◽  
Acrylic Resin ◽  
Epoxidized Soybean Oil ◽  
Curing Process ◽  
Green Composites ◽  
Thermosetting Polymers ◽  
Epoxy Groups

An acrylic epoxidized soybean oil (AESO) has been used in this study. The synthesis of the acrylic resin has been made from acrylic acid which breaks the epoxy groups of the ESO (epoxidized soybean oil). This material can be obtained thermosetting polymers suitable for use as a matrix in "green composites. The aim of this work is to develop some AESO-styrene mixtures in order to evaluate the influence of the AESO-styrene ratio in the curing process and also it is desired to obtain the resins characteristics.

Texturization Analysis by X-ray Diffraction of Shells of the Mussel Ischadium recurvum (Rafinesque, 1820) (Mollusca Bivalvia)

2001 ◽  
Vol 711 ◽  
Author(s):  
Octavio Gómez-Martínez ◽  
Daniel H. Aguilar ◽  
Juan J. Alvarado-Gil ◽  
Patricia Quintana ◽  
Dalila Aldana-Aranda
Keyword(s):  
Diffraction Study ◽  
Organic Matrix ◽  
Nucleation And Growth ◽  
Preferred Orientation ◽  
Bivalve Mollusk ◽  
X Ray Diffraction ◽  
X Ray ◽  
The Matrix ◽  
Crystallographic Planes ◽  
Chemical Groups

ABSTRACTMost of the inorganic biomineralized materials are deposited on an organic matrix that controls the orientation and structure of the crystals. It is thought that chemical groups at the surface of the matrix may act as a template for the nucleation and growth of the mineral. A x-ray diffraction study of the texturization development of the bivalve mollusk shells is presented; specifically, the mussel Ischadium recurvum (Rafinesque, 1820), in different growing stages. The x-ray reflections show a preferred orientation that changes as the mollusk grows, and at the final stages only two crystallographic planes prevail.

Electron microscopical and laser diffraction studies of the nucleation and growth of crystals in the organic matrix of dentine

1971 ◽  
Vol 117 (3) ◽  
pp. 381-393 ◽  
Author(s):  
H. J. H�hling ◽  
F. Scholz ◽  
A. Boyde ◽  
H. G. Heine ◽  
L. Reimer
Keyword(s):  
Organic Matrix ◽  
Nucleation And Growth ◽  
Laser Diffraction ◽  
Electron Microscopical
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