PET is widely used as fibres in the textile industry because of its excellent physical and chemical characteristics. However, it is well known as a non-biodegradable material.
In our effort for developing CELYS™ fibres, we set “biodegradable” as one of our must-be targets. Our idea was simple and straightforward, that was, easy-breaking ester linkage would result in fast degradation.
After many trials and errors, we successfully introduced easy-breaking ester linkages into the polyester backbones during the polymerisation, which greatly facilitated the cleavage of the ester linkages when exposed to the right environment.
As a result, our CELYS™ fibres fully biodegraded within 180 days in an industrial compost.
The unique molecular structure of CELYS™ polyester creates a cottony touch, and is softer than normal PET.
The special chemical structure of CELYS™ polyester leads to a lower tensile strength than normal PET fibre. This creates a natural solution to the anti-pilling concerns for normal PET fibre.
The hydrophilic groups in the CELYS™ fibre structure make it absorb water instantly. The moisture regain is about 4 times that of normal PET fibre.
Unlike normal PET fibre, CELYS™ fibre can be dyed at 100°C, either through cationic dyes, or medium and low energy disperse dyes.
As a polyester fibre, CELYS™ maintains good quick-dry performance, and it is even enhanced by the many natural channels with faster vaporisation.
There are many naturally formed channels inside CELYS™ polyester fibre, which can quickly carry away moisture from your skin for great breathability.