Polyamide material – Sustainability, properties, washing

Have you ever wondered why some of your clothes feel so sticky, even if you haven't worn them much?

Or why does a workout top tear so quickly, even though it's supposed to be durable as a "synthetic" fabric?

The answer often lies in the characteristics of the material used, including polyamide (also known as nylon). Polyamide is one of the most common synthetic fibers in fashion and for technical purposes — but not all polyamides are created equal: some last a lifetime, while others start to deteriorate after washing, and can also cause environmental problems.

In this article, we will take an in-depth look at polyamide.

The most important properties of polyamide material

First, what is polyamide? Polyamide is a synthetic, or artificially produced, material that belongs to the polymer family and is most often used for sportswear and swimwear .

The following main physical and mechanical characteristics should be highlighted:

• High tensile strength and durability – polyamide is a strong material with good abrasion resistance.  
• Flexible behavior / less brittleness – has relatively good elongation.
• Light weight / low mass – one of the goals of the material is not to place excessive strain on the structure.
• Quick drying / low water absorption – polyamide absorbs relatively little moisture (but not zero): for example, PA6 can absorb about 2–3% of water from ambient humidity.
• Good dimensional stability / crease resistance – creases less, holds its shape relatively well.
• Chemical resistance – more resistant to organic solvents, abrasion and chemical effects.
• Heat and abrasion resistance – certain types (especially technical, engineering polyamides) can withstand relatively high temperatures.
  

It is also important to mention: polyamides are hydrostatically sensitive – i.e. depending on the given humidity, they partially absorb water, which affects their mechanical properties (e.g. elasticity, stiffness).  

Advantages

One of the biggest advantages of polyamide is its durability and flexibility – it withstands wear and tear well, does not wrinkle and retains its shape for a long time. It is light, fast dries quickly, making it ideal for sportswear and swimwear. Its flexible structure makes it comfortable to wear and fits well to the body.

It is chemically resistant, so it is difficult to damage during use. In recent years, recycled and bio-based versions (such as Econyl) have appeared, which combine functionality with sustainability,

Disadvantages

The main disadvantage of polyamide is that it is made from fossil fuels , its production is energy-intensive and involves significant carbon dioxide emissions. During washing, it can release microplastic fibers that pollute the waters.

The material is not biodegradable, so it has a long-term impact on the environment. It is sensitive to high temperatures and can easily melt or deform when ironed. Some types are less breathable, so they can be uncomfortable in hot weather. Although durable, due to sustainability issues, only conscious, recycled versions should be preferred.

Where does the material come from?

Historically, nylon was one of the first commercial polyamides, developed through research by Wallace Carothers at DuPont in the 1930s.  

Modern developments include bio-based polyamides, which contain raw materials derived partly or entirely from renewable, biomass-based sources (e.g. vegetable oils, sugars). For example, there are new methods that create sugar-free polyamides from agricultural waste, thereby reducing fossil carbon use.  

What are they made of?

Polyamide has an extremely wide range of uses — here are some examples:

• Clothing and sportswear – leotards, tracksuits, swimwear, stockings, underwear (e.g. stockings in a polyacridine-polyamide blend)
  Synthetic fabrics – canvases, technical textiles
• Technical / engineering components – machine elements, motor housings, engineering plastic elements
• Automotive applications – pipes, casings, fittings
• 3D printing – polyamide powder
• Other – toothbrush bristles, shoe soles, shoe parts, nets, ropes, machine parts, industrial fabrics
  

Polyamide (especially high-performance, engineering grades) can replace metal in applications where weight reduction is crucial.

Who is recommended to wear this material? When should you choose polyamide clothing?

The advantages of polyamide clothing are particularly evident when:

• When doing sports, exercising – sweating, moving, high stress. Advantageous because it is a quick-drying and resistant material
• Travel / active use – few creases, durability
• Swimwear / water sports – quick drying and low water absorption come in handy
• In layered clothing – as an inner layer where a lightweight and highly conductive material is needed
• In technical clothing / outdoor equipment – ​​where reliability and durability are required
  

However, it is not necessarily ideal if:

• You prefer natural materials (e.g. cotton, linen or wool)
  
  
• In extremely hot environments – polyamide can withstand heat, but does not ventilate as well as natural fibers
  
  
• You avoid synthetic fibers for environmental reasons.
  
  
• Your skin is sensitive to certain synthetic fibers.
  

How to wash and iron the fabric?

Polyamide requires careful handling, especially to maintain its shape, structure and prevent excessive wear.

Washing suggestions:

The safest way to care for polyamide clothes is to wash them by hand in lukewarm or cold water with a mild, enzyme-free detergent.

If you wash in a machine, choose a gentle cycle at a low temperature (30-40°C) and a gentle spin. Avoid chlorine-based or strong bleaches, as they can damage the fibers, and do not use hot water or steam, as they can deform the material. Since microfibers can also be shed during washing, it is worth using a laundry bag or microfilter to reduce the environmental impact.

Air dry and only use a dryer if the garment label allows it.

Ironing, steaming:

• Polyamide should only be ironed at very low temperatures (usually below 110-120°C), if at all necessary.
  
  
• Use steam (circulating with low moisture input) or ironing paper to avoid direct heat from reaching the fibers.
  
  
• Always check the garment label — if it says “do not iron,” don’t risk it.
  

Extreme heat can damage the structure of polyamide, melting or distorting the material.

The dangers and sustainability of polyamide

The sustainability issues of polyamide are particularly important today, as both the fashion and technical industries are under increasing pressure due to environmental considerations.

Circulation / recycling

Traditional polyamide production is energy-intensive and fossil-based, but bio-based and recycled versions, such as Econyl , offer a more sustainable alternative. They are produced by mechanical or chemical recycling and often have a higher environmental rating than virgin polyamides.

Microplastic pollution

When washed, polyamide clothes can also release microfibres that can enter the aquatic environment and cause pollution. Although they release less than polyester, their environmental impact is still significant. PFAS-based water-repellent coatings can further increase chemical emissions during washing and use.

Carbon footprint and energy use

Polyamide production is an energy and raw material intensive process that results in significant greenhouse gas emissions. However, the development of bio-based and sugar-based polyamides is a promising direction, as they aim to reduce energy consumption and CO₂ emissions.

Durability and longevity

One argument in favor of polyamide is that its durability means you need to buy new clothes less often, which can reduce the environmental burden of production and consumption. However, this is only true if the material is of good quality and properly maintained.

Polyamide can be a relatively more sustainable choice if you choose a recycled version, minimize the number of washes, use proper washing techniques, and wear your clothes for a long time.