Fiber Materials / Alfa Chemistry
Online Inquiry

Polymer Fiber

Alfa Chemistry provides a wide range of polymer fibers, which are divided into polyester fibers, polyamide fibers, aramid fibers, polyurethane fibers, polyacrylonitrile fibers, polyolefin fibers and so on according to the polymer types.


  • Polyester Fiber
    Depending on the molecular composition, polyester fiber has unique properties such as high strength, light weight, easy washing and quick drying, good elasticity, and mildew resistance.
  • Polyamide Fiber
    Polyamide fibers mainly include polyamide 6 fiber and polyamide 66 fiber. Polyamide fibers have good overall properties, especially abrasion resistance.
  • Aromatic Polyamide Fiber
    Aromatic polyamide fiber, also known as aramid fiber, is a heat-resistant, high-strength synthetic fiber. Due to its rigid molecular chain structure and hydrogen bonding, aramid fibers exhibit high strength, high modulus, and insulating properties.
  • Polyacrylonitrile Fiber
    Polyacrylonitrile (PAN) fiber, also known as acrylic fiber, has excellent resistance to sunlight, chemical and microbial attack. In addition, PAN fiber is also an important raw material for forming carbon fiber.
  • Polyurethane Fiber
    Polyurethane (PU) fiber is an elastic fiber with good resistance to chemical degradation. PU fibers exhibit high elongation and high elastic recovery.
  • Phenolic Fiber
    Phenolic fiber is a cross-linked fiber made of phenolic resin, which is extremely heat-resistant and flame-retardant.
  • Polyolefin Fiber
    Polyolefin fibers refer to synthetic fibers composed of linear macromolecules polymerized from olefins, mainly including polyethylene fibers and polypropylene fibers.
  • Polyvinyl Chloride Fiber
    Polyvinyl chloride (PVC) fiber is a self-extinguishing synthetic fiber spun from polyvinyl chloride resin.
  • Fluorine Fiber
    Due to the introduction of fluorine atoms, fluorine-containing fibers exhibit excellent properties such as excellent corrosion resistance, thermal stability, and oxidation resistance. PTFE fiber is one of the most important varieties of fluorine-containing fibers.
  • Fibrillated Fiber
    Fibrillation is the process of separating fibers into finer fibers or fibrils of smaller diameter, which can be used to improve fabric properties.
  • Polylactic Acid Fiber
    Polylactic acid (PLA) fiber is a sustainable ecological fiber that is biodegradable and derived from renewable resources. Alfa Chemistry provides PLA fiber products to support your green research and development concepts.

Influencing Factors of Fiber Properties

The properties of individual polymers are often determined and defined by the molecular chain structure, which is determined by the rotational degrees of freedom of atoms surrounding single bonds. Polymer fibers are made by spinning or drawing. Polymers can exist in crystalline and amorphous regions, and the crystallinity of polymer fibers is one of the most important aspects of polymer science. Most commercial fibers have crystallinity values between 20% and 60%. High strength and high modulus fibers tend to have high crystallinity values, in the 90% range. Molecular orientation, which is the extension of macromolecules and other structural units along the fiber axis, determines the tensile strength, sorption of solvents, modulus, optical behaviors, etc. Crystallinity and molecular orientation together determine the physical properties of the fiber. Furthermore, the molecular weight of the polymer has a significant effect on its spinnability. [1]

Crystalline and amorphous region of a polymerCrystalline and amorphous region of a polymer.


  1. G. Bhat, et al. Advances in Filament Yarn Spinning of Textiles and Polymers, 2014, 3-30.

Our products and services are for research use only.