Question

at which stage plasticizers are added to polymers?​

Answer 1

What are Plasticizers?

TAGS: PVC, Plasticizers and Sustainability

Selecting Plasticizers for PolymersPlasticizers are relatively non-volatile organic substances (mainly liquids). When incorporated into a plastic or elastomer, they help improve the polymer's:

Flexibility

Extensibility and,

Processability

Plasticizers increase the flow and thermoplasticity of a polymer by decreasing the viscosity of the polymer melt, the glass transition temperature (Tg), the melting temperature (Tm) and the elastic modulus of the finished product without altering the fundamental chemical character of the plasticized material.

Use of Plasticizers

Plasticizers are among the most widely used additives in the plastic industry. They are also usually cheaper than other additives used in polymer processing.

Plasticizers are most often used in PVC, the third largest polymer by volume after PP and PE. In turn, PVC is used in a wide range of products. Examples include:

Unplasticized PVC (or rigid PVC) is used in applications such as pipes, siding, and window profiles.

Plasticized PVC (or flexible PVC) finds applications in automotive interior trim, cables, PVC films, flooring, roofing and wall coverings, etc.

Answer 2

Plasticizers increase the flow and thermoplasticity of a polymer by decreasing the viscosity of the polymer melt, the glass transition temperature (Tg), the melting temperature (Tm) and the elastic modulus of the finished product without altering the fundamental chemical character of the plasticized materia