Question 6 (Textile Engineering & Fibre Science)
Birefringence of filament yarn is related to its
| (A) | Crystallinity |
| (B) | Orientation |
| (C) | Individual filament denier |
| (D) | Density |
Answer / Solution
[Show Answer]
Option B
Frequently Asked Questions | FAQs
What is birefringence in fibres?
Birefringence in textiles refers to the property of certain textile fibers or fabrics to exhibit double refraction or double polarization when light passes through them. Birefringence occurs when a material has different refractive indices along different crystallographic axes or molecular orientations, resulting in the splitting or polarization of light into two perpendicular directions.
In textiles, birefringence is often observed in fibers that have a highly ordered molecular or crystalline structure, such as some synthetic fibers and certain natural fibers. For example, polyester, nylon, and some types of rayon fibers can exhibit birefringence due to their molecular alignment and crystalline structure. Birefringence can also be induced in textile fibers or fabrics through mechanical or thermal treatments.
Birefringence in textiles can have several practical implications and applications. For instance:
Optical Properties: Birefringent textile fibers or fabrics can exhibit unique optical properties, such as differential light transmission, polarization, and color effects. These properties can be utilized in various textile applications, such as optical filters, polarizing materials, and specialty textiles for decorative or functional purposes.
Fiber Orientation Analysis: Birefringence can be used as a method for analyzing the fiber orientation or alignment in textile fabrics or composites. By measuring the birefringence of a textile sample, information about the fiber orientation, distribution, and alignment can be obtained, which is useful in understanding the mechanical, physical, and structural properties of textile materials.
Quality Control: Birefringence can be used as a parameter for quality control in textile production. By measuring the birefringence of textile fibers or fabrics, the degree of molecular or crystalline alignment can be assessed, which can be indicative of the quality, performance, and processing conditions of the textile material.
Textile Testing: Birefringence can be used as a testing method in textile research and development for characterizing the properties of textile fibers or fabrics, such as their structure, morphology, and orientation. Birefringence measurements can provide valuable information about the microstructure and properties of textile materials, aiding in the evaluation and optimization of their performance.
Overall, birefringence is an important property in textiles that can be utilized for various purposes, including optical applications, fiber orientation analysis, quality control, and textile testing. It is a phenomenon that is studied and utilized in the field of textile science and technology for understanding and optimizing the properties and performance of textile materials.