Is Artificial Turf Grass Environmentally Friendly? A Technical Overview

Artificial Turf Grass and Environmental Performance: Material Structure, Technical Parameters, and Sustainability Impacts

Artificial turf grass has been widely adopted across sports facilities, recreational areas, and residential environments as a modern surface solution. As its use expands, questions have emerged regarding whether artificial turf grass poses environmental risks. This report reviews the material composition, structural classifications, technical specifications, and maintenance characteristics of artificial turf, outlining its environmental performance and practical implications.

Artificial Turf Grass Material Composition and Fiber Types

Artificial turf grass performance and durability are closely linked to the materials used in turf fibers. Based on fiber material, artificial turf grass is commonly categorized into three types:

• PA (Polyamide / Nylon) fibers: These fibers exhibit high abrasion resistance and strong elastic recovery. Their rigid structure supports long-term use but involves higher material costs.

• PE (Polyethylene) fibers: PE fibers are softer, offer favorable sports performance, and demonstrate longer service life. They are typically used in medium- to high-pile systems for sports fields.

• PP (Polypropylene) fibers: PP fibers are relatively rigid, show weaker resistance to aging, and have a shorter lifespan. Due to lower cost, they are often used in short-pile turf for recreational areas and school playgrounds.

Artificial Turf Grass Pile Height and Application Scenarios

Artificial turf grass systems are further classified by pile height, which directly influences performance characteristics and application suitability:

• Long pile (32–50 mm): Commonly used for football pitches and training grounds. These systems are typically infill-based, requiring quartz sand and rubber granules to enhance shock absorption and reduce athlete injury risk.

• Medium pile (19–32 mm): Suitable for tennis and hockey fields, balancing surface stability and ball response.

  Short pile (6–12 mm): Due to lower friction and reduced cushioning, short-pile turf is applied in environments with higher safety requirements and lower impact intensity.

Artificial Turf Grass Fiber Structure: Cross-Section and Longitudinal Forms

Artificial turf grass fiber geometry plays a key role in durability and performance.

Cross-sectional structure

• Monofilament fibers: Including slit-film monofilament and extruded monofilament. Extruded monofilament fibers are produced through a one-step molding process, resulting in lower physical damage and longer service life.

• Fibrillated (net) fibers: Manufactured by cutting slits into a plastic film, creating a mesh-like structure.

Longitudinal structure

• Straight fibers: Fibers maintain a linear form without curvature; net fibers are typically straight.

• Curled fibers: Produced through weaving or hot-air forming processes. Woven curled fibers demonstrate improved shape retention and deformation resistance.

Technical requirements for the physical and mechanical properties of the finished artificial turf grass surface and the turf yarn

Artificial Turf Grass System Types and Infill Specifications

Artificial turf grass is generally classified into infill and non-infill systems. Infill-based turf is most commonly used for sports applications.

Characteristics of infill artificial turf grass
Infill materials stabilize fibers and protect them from high-frequency friction. Football turf fibers typically measure 40–60 mm in height, with infill materials accounting for approximately two-thirds of the fiber height, reducing breakage and extending service life.

Infill material structure

• Upper layer: Rubber granules to enhance elasticity and shock absorption

• Lower layer: Quartz sand to stabilize the turf base and maintain vertical fiber alignment

Typical infill quantities

• 25 mm turf: approx. 23 kg/m² of sand, minimal rubber granules

• 32 mm turf: approx. 25 kg/m² of sand, ~3 kg/m² of rubber granules

• 40 mm turf: approx. 30 kg/m² of sand, ~5 kg/m² of rubber granules

• 50 mm turf: approx. 37 kg/m² of sand, ~7 kg/m² of rubber granules

Artificial Turf Grass Technical Parameters and Measurement Standards

Artificial turf grass specifications are typically defined using the following indicators:

• Stitch density: Expressed as stitches per square meter (e.g., 16,800 / 18,900 / 22,050 stitches/m²)

• Stitch rate: Number of stitches per 10 cm, commonly 16, 18, or 21

• Gauge: Distance between rows, typically 3/4", 3/8", or 5/8"

• Calculation formula:
  Stitch density = coefficient × (stitch rate ÷ gauge), where coefficient = 1000 ÷ 2.54
  Example: 16 stitches per 10 cm with a 3/8" gauge yields approximately 16,800 stitches/m²

Higher stitch density indicates greater stitch count and narrower gauge spacing.

DTEX (linear density)
DTEX represents the weight in grams per 10,000 meters of fiber. 

Common specifications include 6000, 6600, 7400, 8800, 10,000, 11,000, 13,000, and 16,000. Higher DTEX values indicate thicker fibers and improved quality. 

Typical constructions include 4 strands with 8 filaments or 6 strands with 12 filaments per tuft.

Artificial Turf Grass Environmental Performance and Sustainability Considerations

Artificial turf grass is primarily manufactured using polyethylene and polypropylene synthetic fibers, which are widely recognized as environmentally stable materials. Manufacturers continue to optimize production processes and material selection to reduce environmental impact.

Studies indicate that under normal usage conditions, modern artificial turf grass releases only minimal levels of volatile substances, even in high-temperature environments. These emissions are considered negligible and do not pose measurable risks to air quality or human health.

In addition, artificial turf grass requires no chemical fertilizers, herbicides, or intensive irrigation during maintenance. Compared with natural grass systems, this significantly reduces soil and groundwater contamination risks while conserving water resources.

Conclusion and Industry Context

Artificial turf grass continues to evolve through advancements in material science and system design. Its structural characteristics, technical parameters, and low-maintenance requirements contribute to reduced resource consumption during use. As manufacturers further refine environmentally oriented production methods, artificial turf grass remains a practical surface solution across sports, recreational, and residential applications.