Related Experiment Video
Updated: Sep 22, 2025
09:06
Preparation of DNA-crosslinked Polyacrylamide Hydrogels
Published on: August 27, 2014
14.8K
Highly Elastic Fibers Made from Hydrogen-Bonded Polymer Complex.
Jiefu Li1, Zhiliang Wang1, Lingang Wen1
1Center for Advanced Low-dimension Materials, Donghua University, Shanghai 201620, China.
ACS Macro Letters
|May 26, 2022
Summary
Researchers developed a new method to create strong, elastic fibers using hydrogen bonds between poly(acrylic acid) and poly(ethylene oxide). These novel complex fibers exhibit superior stretchability compared to existing materials.
Area of Science:
- Materials Science
- Polymer Chemistry
- Nanotechnology
Background:
- Developing advanced fibers with enhanced mechanical properties is crucial for various applications.
- Existing elastic fibers like Spandex have limitations in stretchability and recovery.
Purpose of the Study:
- To introduce a novel approach for preparing hydrogen-bonded complex fibers.
- To investigate the properties of poly(acrylic acid)/poly(ethylene oxide) (PAA/PEO) complex fibers.
Main Methods:
- A spinnable fluid was created by restricting hydrogen bonds.
- The fluid was extruded into a coagulation bath to induce fiber formation via hydrogen bonding.
- The PAA/PEO complex was synthesized and characterized.
Main Results:
- PAA/PEO complex fibers were successfully prepared.
- The fibers demonstrated excellent elastic behavior, stretching over 12 times their original length.
- The material exhibited superior stretchability compared to Spandex and natural rubber fibers.
Conclusions:
- The dynamic hydrogen bonding between PAA and PEO is key to the fiber's flexibility and recovery.
- This method offers a promising route to high-performance elastic fibers.
- The miscibility of PAA and PEO at the molecular level contributes to the unique properties.
Related Concept Videos
01:12Elastin is Responsible for Tissue Elasticity
2.5K
Elastic fiber contains the protein elastin along with lesser amounts of other proteins and glycoproteins. The main property of elastin is that it will return to its original shape after being stretched or compressed. Elastic fibers are prominent in elastic tissues found in skin and the elastic ligaments of the vertebral column.
Ligaments and tendons are made of dense regular connective tissue, but in ligaments not all fibers are parallel. Dense regular elastic tissue contains elastin fibers and...
Ligaments and tendons are made of dense regular connective tissue, but in ligaments not all fibers are parallel. Dense regular elastic tissue contains elastin fibers and...
2.5K
00:55Fibrous Proteins
3.5K
Fibrous proteins are either long and narrow proteins or assemble to form long and thin structures. They contain repetitive units and usually consist of either alpha helices or beta sheets and, in rare cases, a mix of both. The amino acids in the primary structure often consist of repeating amino acid sequences. The role of fibrous proteins is primarily structural. Many are located in the extracellular matrix and are present in connective tissues to impart strength and joint mobility. They are...
3.5K
01:13Collagens are the Major Structural Proteins of ECM
4.5K
Three main types of fibers are secreted by fibroblasts: collagen fibers, elastic fibers, and reticular fibers. Collagen fiber is made from fibrous protein subunits linked together to form a long, straight fiber. Collagen fibers, while flexible, have great tensile strength, resist stretching, and give ligaments and tendons their characteristic resilience and strength. These fibers hold connective tissues together, even during the body's movement.
Connective tissue proper includes loose...
Connective tissue proper includes loose...
4.5K
02:34Polymers
37.5K
The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the...
37.5K
01:14Polymer Classification: Architecture
3.1K
Polymers are classified as linear or branched on the basis of their chain architecture. The polymer chains in linear polymers have a long chain-like structure with minimal to no branching at all. Even if a polymer features large substituent groups on the monomer, which appear as branches to the skeleton, it is not considered a branched polymer. A branched polymer contains secondary polymer chains that arise from the main polymer chain. The branching occurs when the polymer growth shifts from...
3.1K
01:17Connective Tissue Fibers and Ground Substance
9.2K
One of the significant functions of connective tissue is connecting tissues and organs. Unlike epithelial tissue that is composed of cells closely packed with little or no extracellular space in between, connective tissue cells are dispersed in a matrix. The matrix usually includes a large amount of extracellular material produced by the connective tissue cells that are embedded within it. It plays a significant role in the functioning of this tissue. The major component of the matrix is a...
9.2K