Polish version

Thermoplastic starch (TPS)

Biodegradable and compostable thermoplastic starch produced from renewable natural raw materials is characteristic of high homogeneity degree, a favorable set of mechanical properties, and products made of it have good dimensional stability in application conditions.

TPS in granulated form is a ready material to manufacture products with methods used on conventional thermoplastic polymers or it can be used as raw material to produce starch-polymeric composites, useful in organic recycling. Thermoplastic starch can be used for manufacture of any kinds of packaging, such as: films, bags (for shopping or waste) and one-off products (e.g. catering equipment pieces) and in this area it can be an equivalent substitute of conventional materials like polyolefins or PVC.

A brief description of the technology

The technology to produce thermoplastic potato and corn starch involves the destructurization of the native starch in specific dynamic-thermal conditions. The process is carried out in a co-rotating twin-screw extruder in the presence of a plasticizer, where due to pressure and high shear rates crystalline starch structure is disrupted and the starch is converted into homogeneous, amorphous material, suitable for thermoplastic processing.

Advantages of the technology offered

The technology to produce the new polymeric material, which is thermoplastic starch, relies upon renewable raw materials of vegetable origin. It provides for becoming independent of traditional raw material sources, and simultaneously allows for organic recycling and biodegradation of waste products i.e. decay in composting conditions.


A intermeshing co-rotating twin-screw extruder.


Patent application No P-376 985 (2005) „Method to produce biodegradable polymeric material”.

Patent application No P-386 832 (2008) „Biodegradable composition containing thermoplastic starch”.

Patent application No P-392 109 (2010) „Method to produce thermoplastic starch”.

Market competitiveness

At present, thermoplastic starch is not produced in Poland.


Awards received on prestigious international invention and innovation exhibitions: 2 gold medals (Geneva 2008, Brussels 2009), 2 silver medals (Seoul 2008, Shanghai 2008), 1 bronze medal (Warsaw 2008), Cup of the Minister of Economy of Poland, deputy Prime Minister Waldemar Pawlak (Brussels 2009).


Dr. Regina Jeziórska, D.Sc., Eng., prof. of ICRI

phone: + 48 22 568 24 91

fax: + 48 22 568 21 84