Related Experiment Video
Updated: Jan 30, 2026
09:49
Author Spotlight: Insights into the Use of Apple-Derived Cellulose Scaffolds for Bone Tissue Engineering
Published on: February 23, 2024
2.7K
Binary bioactive glass composite scaffolds for bone tissue engineering-Structure and mechanical properties in micro
Michał J Woźniak1, Adrian Chlanda2, Przemysław Oberbek3
1University Research Center - Functional Materials, Warsaw University of Technology, Woloska 141, 02-507 Warsaw, Poland; Faculty of Materials Science and Engineering, Warsaw University of Technology, Woloska 141, 02-507 Warsaw, Poland; MJW RnD, Nowy Swiat 33/13, 00-029 Warsaw, Poland.
Micron (Oxford, England : 1993)
|January 26, 2019
Summary
Researchers developed novel composite scaffolds using bioactive glass and biodegradable polymers (PLLA, PCL). These polymer-coated scaffolds exhibited altered nanomechanical properties, potentially influencing cell interactions for tissue engineering applications.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Nanotechnology
Background:
- Composite scaffolds combining bioactive glass and bioresorbable polyesters are promising for bone regeneration.
- Understanding the nanomechanical properties of these scaffolds is crucial for predicting cellular responses.
Purpose of the Study:
- To fabricate and characterize composite scaffolds of bioactive glass (SiO2-CaO) coated with poly-l-lactic acid (PLLA) and polycaprolactone (PCL).
- To investigate the micro/nanoscale structural and mechanical properties of these novel scaffolds.
- To evaluate the impact of polymer coating on scaffold nanomechanics and surface properties.
Main Methods:
- Fabrication of composite scaffolds via polymer coating of porous bioactive glass foams.
- Microstructural analysis using micro-computed tomography and scanning electron microscopy.
- Nanomechanical property mapping (elastic modulus, adhesion) and topography imaging using PeakForce Quantitative Nanomechanical Property Mapping (PF-QNM) atomic force microscopy (AFM).
- Contact angle measurements to assess surface wettability.
Main Results:
- Polymer-coated scaffolds demonstrated significantly higher average surface roughness compared to pure bioactive glass scaffolds.
- The stiffness (elastic modulus) of the polymer-coated scaffolds was found to be lower than that of the uncoated bioactive glass scaffolds.
- Simultaneous mapping of nanomechanical properties and topography provided detailed insights into scaffold surface characteristics.
Conclusions:
- Polymer coating alters the surface topography and nanomechanical properties of bioactive glass scaffolds.
- The reduced stiffness and increased roughness of coated scaffolds may modulate cell adhesion, proliferation, and differentiation.
- This study provides a foundation for designing advanced composite scaffolds with tailored properties for enhanced tissue regeneration.
Related Concept Videos
01:55Bone Structure
51.7K
Within the skeletal system, the structure of a bone, or osseous tissue, can be exemplified in a long bone, like the femur, where there are two types of osseous tissue: cortical and cancellous.
51.7K
01:22Sperm Structure and Semen Composition
11.0K
During ejaculation, males release around 2-5 milliliters of semen, which is a complex mixture of mature sperm and various fluids produced by accessory glands. The mature sperm cells measure approximately 60 micrometers in length and consist of a head, neck, midpiece, and tail. The head is flattened and tapered, measuring about 4 to 5 micrometers in length. It contains a nucleus with condensed chromosomes and an acrosome, a cap-like structure filled with enzymes essential for penetrating the...
11.0K
01:26Binary Fission
2.9K
Binary fission is the primary mode of asexual reproduction in prokaryotes, such as bacteria. It results in the production of two genetically identical daughter cells. This highly efficient process ensures the rapid propagation of bacterial populations under favorable conditions and involves coordinated cellular and molecular events.DNA Replication and SeparationThe process begins with the replication of the bacterial chromosome. The circular DNA molecule unwinds at a specific origin of...
2.9K
01:20Binary Fission
63.3K
Fission is the division of a single entity into two or more parts, which regenerate into separate entities that resemble the original. Organisms in the Archaea and Bacteria domains reproduce using binary fission, in which a parent cell splits into two parts that can each grow to the size of the original parent cell. This asexual method of reproduction produces cells that are all genetically identical.
63.3K
01:21Structural Properties and Dimensions of Lumber
398
Wood's structural properties derive from fibers aligned along the tree's length, contributing significantly to its mechanical strength. Wood exhibits up to twenty times greater tensile strength along these fibers compared to across them, and generally shows better performance under compression than tension. The length of fibers varies, with hardwoods having fibers around one twenty-fifth inch long and softwoods ranging from one-eighth to one-third inch.
The strength characteristics of...
The strength characteristics of...
398
02:37Structure and Physical Properties of Alkynes
13.2K
Introduction:
In nature, compounds containing both carbon and hydrogen are known as "hydrocarbons". Aliphatic hydrocarbons are compounds whose molecules contain saturated single bonds (i.e., alkanes) or unsaturated double or triple bonds. Alkenes contain carbon–carbon double bonds and have a structural formula CnH2n. Unsaturated hydrocarbons containing carbon–carbon triple bonds are called "alkynes" and are structurally represented by the formula CnH2n-2.
The...
In nature, compounds containing both carbon and hydrogen are known as "hydrocarbons". Aliphatic hydrocarbons are compounds whose molecules contain saturated single bonds (i.e., alkanes) or unsaturated double or triple bonds. Alkenes contain carbon–carbon double bonds and have a structural formula CnH2n. Unsaturated hydrocarbons containing carbon–carbon triple bonds are called "alkynes" and are structurally represented by the formula CnH2n-2.
The...
13.2K