The Silent Culprit: Why Unworn Boots Crumble and How to Prevent It

We've all been there - you pull out a pair of boots from the back of your closet, excited to wear them, only to find that they have mysteriously crumbled into a pile of dust. How is it possible that unworn shoes can deteriorate over time? The answer lies in a process called hydrolysis, a chemical breakdown of the polyurethane (PU) polymer commonly found in shoe soles. In this blog, we'll delve into the science behind this phenomenon and explore effective ways to prevent it.

Understanding Hydrolysis:

Hydrolysis is a chemical reaction in which water breaks down the molecular bonds of a substance. In the context of shoe soles, PU polymer is the primary material susceptible to hydrolysis. Even if your boots are stored unworn, the vaporous form of water in the air can slowly infiltrate the material, leading to a gradual breakdown of the PU.

Factors Accelerating Hydrolysis:

1. Time: Hydrolysis is a slow process that occurs over several years. Even shoes stored in a closet can fall victim to this chemical reaction.

2. Temperature: Warmth accelerates chemical reactions, including hydrolysis. Shoes stored in warm environments are more prone to deterioration.

3. Humidity: High humidity levels contribute to the absorption of water by the shoe material, speeding up the hydrolysis process.

Preventing Boots Crumbling:

1. Proper Storage:

   - Store your boots in a cool, dry place away from direct sunlight.

   - Consider using silica gel packets or other moisture-absorbing materials in your shoe storage area.

2. Regular Inspection:

   - Periodically check on your shoe collection, even if unworn, to catch any signs of deterioration early on.

3. Climate-Controlled Storage:

   - If possible, invest in a climate-controlled storage solution to maintain an optimal environment for your boots.

4. Rotation:

   - Rotate your shoe collection regularly. Wearing different shoes allows them to breathe and reduces the chances of hydrolysis affecting all pairs simultaneously.

5. Sealable Containers:

   - Store your boots in sealable containers to create a barrier against environmental factors.

The crumbling of unworn boots may seem like a mystery, but the science of hydrolysis unravels the truth behind this phenomenon. By understanding the factors contributing to PU degradation and implementing preventive measures, you can extend the lifespan of your beloved shoe collection. Take the time to care for your boots, and they'll be ready to step out with you for years to come.