Polyester Fibre Types and Variants
category
The polyester family encompasses numerous fibre types differentiated by polymer chemistry (PET, PTT, PBT, PEN), cross-sectional geometry (round, trilobal, hollow, flat), processing state (POY, FDY, DTY, staple), and functional modification (FR, antimicrobial, conductive, high-tenacity). Each variant has distinct structure, properties, and application domains.
Role
Understanding the full spectrum of polyester fibre types is essential for material selection in textile product development and for contextualising the structure–property principles of polyester science across different polymer architectures.
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Subtopics
- PTT (Polytrimethylene Terephthalate) Fibre PTT (polytrimethylene terephthalate): polyester with 1,3-propanediol (PDO) instead of EG. Helical ch…
- PBT (Polybutylene Terephthalate) Fibre PBT (polybutylene terephthalate): polyester with 1,4-butanediol instead of EG. Gauche–gauche conform…
- PEN (Polyethylene Naphthalate) High-Performance Fibre PEN (polyethylene naphthalate): naphthalene ring instead of benzene ring in backbone. Higher chain s…
- Hollow and Microhollow Polyester Fibres Hollow polyester fibres (10–30% void fraction) spun using annular spinnerets where air or nitrogen i…
- Microfibre and Ultra-Fine Polyester Microfibre polyester: fineness <1 dtex/filament (cf. silk ~1.3 dtex). Production routes: (1) direct …
- Electrically Conductive Polyester Fibres Conductive PET fibres: (1) Carbon black-loaded core/PET sheath bicomponent (resistivity 10³–10⁶ Ω·cm…
- Flame Retardant Polyester: Reactive and Additive FR polyester types: (1) Reactive FR: phosphorus comonomer (phosphonate ester, DOPO derivative) incor…
- High-Visibility and Photoluminescent Polyester High-visibility (HiVis) polyester fabrics for PPE (EN ISO 20471): fluorescent yellow-green (fluoresc…
- Post-Consumer and Post-Industrial Recycled Polyester rPET fibre classifications: (1) Post-consumer recycled (PCR): from end-consumer waste (bottles, garm…
- Moisture-Wicking and Phase-Change Functional Polyester Moisture-wicking polyester: cross-shaped (+ or X cross-section) spinneret creates grooves (4 longitu…