Anisotropy is the characteristic of materials that exhibit different properties along different directions. Fiber materials of high strength can be produced from anisotropic polymers. However, the technical processes required to form anisotropic solutions from solid polymers are highly difficult. Alfa Chemistry provides custom services for anisotropic fibers to meet your high-performance fiber needs challenges. Our fiber development department has a strong technical base and a team of well-trained and experienced experts.
Optional Service Items
Fiber spinning of anisotropic polymers will result in highly crystalline and oriented fibers with high strength and modulus. This is because during fiber formation, the liquid crystal domains in the polymer melt/solution will be oriented due to shear and elongation flow. Combining rich experience in R&D and production, advanced technology and interdisciplinary professional background, Alfa Chemistry is committed to providing customers with satisfactory customized development services for anisotropic fibers. Our service capabilities include but are not limited to the following:
- Optional Anisotropic Polymer
Optional anisotropic polymers include two classes: lyotropic polymers, in which the solution responds differently to different solvent types and concentrations; and thermotropic polymers, in which the melt responds to temperature changes by behaving like liquid crystals. Examples include polyimides and heterocyclic aromatic polymers, which can form anisotropic solutions or melts with liquid crystal behavior at the correct solution temperature and composition.
- Anisotropic Fiber Spinning
Once the right polymer has been selected, our technical team will recommend and apply the appropriate technology to prepare anisotropic fibers based on the material and your needs. For example, poly(1,4-benzamide) can be used to prepare high strength-high modulus fibers from its liquid crystal solution by solution spinning techniques. Suitable solvents include dimethylacetamide or N-methylpyrrolidone, etc.
- Reporting And Other Requirements
We will maintain full communication with you at all stages of project research and development to ensure the most accurate and comprehensive research report and corresponding test results are provided.
Cooperate With Us
We are confident that, by working with us, you will be satisfied with our expertise in the production and characterization of anisotropic fibers. We pride ourselves on our strengths in:
- Experienced testing and research team
- Meet customer needs at all stages
- Efficient and cost-effective services
- Complete and advanced infrastructure
Applications And Research
Anisotropic fibers prepared from anisotropic polymers usually have excellent comprehensive properties such as high strength, high modulus and high temperature resistance, so they have broad application prospects in the fields of electronics, automobiles, aerospace, sensing and optics. Currently, research on anisotropic fibers continues. For example, direct measurement of the axial thermal conductivity of individual polymer fibers by the time-domain thermal reflectivity (TDTR) technique has been studied to advance the understanding of heat transport mechanisms in high-modulus polymer fibers.
References
- S. L. Kwolek, et al. Macromolecules, 1977, 10, 6, 1390–1396.
- Xiaojia Wang, et al. Macromolecules 2013, 46, 12, 4937–4943.
Our products and services are for research use only.
