What is Polycaprolactone (PCL)

I believe that many friends will first ask whether polycaprolactone is a natural material or a synthetic material?

In fact, PCL is an organic high molecular polymer, and pcl polymer is a high molecular organic polymer formed by ring-opening polymerization of ε-caprolactone monomer under the catalysis of a metal anion complex catalyst. Different molecular weights can be obtained if we control the polymerization conditions and they can be classified according to molecular weight.

As the molecular weight increases, its crystallinity decreases. High solubility, low melting point and excellent blending compatibility have aroused people’s great exploration of its application fields. At present, Unilong’s technology is very mature and can provide various molecular weights such as 50,000 60,000 to 80,000.


Among various biopolymers, polycaprolactone (PCL) is favored by many scientists and entrepreneurs because of its biodegradable, high strength, biocompatibility and other advantages.The synthesis method of Uli-Eco has the following two points:

1.It is obtained by ring-opening polymerization or coordination polymerization of caprolactone. The more commonly used methods include anion catalyst synthesis method, cationic catalyst synthesis method and coordination catalyst synthesis method.

2.There are two main synthesis methods: chemical synthesis and biological enzymatic synthesis

Unilong’s polycaprolactone  products are a material with a low melting point, its melting point is 60-63°C, and it can be molded at low temperature. Usually, the appearance of polycaprolactone is white particles, non-toxic, insoluble in water, and easily soluble in various organic solvents. But as polycaprolactone suppliers (polycaprolactone manufacturer) explores the application field, polycaprolactone polymer can also be made into powder.


PCL polymer has good biocompatibility and is compatible with a variety of conventional plastics.

At the same time, polycaprolactone also has good shape memory temperature control properties and good biodegradability, and can be completely degraded into water and CO2.

Now the world is in the transition period between degradable plastics and ordinary plastics. All countries and international health organizations have realized the harm of disposable white pollution to human beings and the ecological environment.

Therefore, for our blue sky and white clouds and the green development of the global ecology , Promoting biodegradable plastics is the responsibility of each of our factories and enterprises, let us work together with Uli-ECO!


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Unilong®️ Group specializes in the research, development, production and operation of biological materials and green solvents. It is a high-tech enterprise integrating the research, development and production of new environmentally friendly and degradable materials.

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