Development of a Highly Efficient Environmentally Friendly Plasticizer.

Area of Science:

• Polymer Science
• Materials Chemistry
• Organic Synthesis

Background:

• Polyvinyl chloride (PVC) often requires plasticizers to improve flexibility and processability.
• Traditional plasticizers, such as dioctylphthalate (DOP), face environmental and health concerns.
• There is a continuous need for novel, effective, and environmentally friendly plasticizers for PVC applications.

Purpose of the Study:

• To synthesize a novel adipic acid ester, butyl phenoxyethyl adipate.
• To evaluate its potential as an effective and environmentally friendly plasticizer for PVC.
• To compare its performance against the established plasticizer, dioctylphthalate (DOP).

Main Methods:

• Synthesis of butyl phenoxyethyl adipate.
• Characterization using Fourier-transform infrared spectrometry (FTIR).
• Thermal analysis via thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC).
• Assessment of compatibility and plasticizing effectiveness in PVC formulations.
• Measurement of glass-transition temperature (Tg) and melt fluidity.

Main Results:

• Butyl phenoxyethyl adipate was successfully synthesized and characterized.
• The new plasticizer exhibited good compatibility and high thermal stability with PVC.
• It demonstrated a significant plasticizing effect, with a Tg of 132.2 °C for PVC and a 7.7 °C difference compared to DOP-based compounds.
• Incorporation of the adipate ester increased PVC melt fluidity by 19-50% between 160-205 °C.

Conclusions:

• Butyl phenoxyethyl adipate is a viable, environmentally friendly alternative plasticizer for PVC.
• Its high thermal stability and effectiveness in reducing processing temperatures offer significant advantages.
• This novel adipate ester can lead to reduced energy consumption in PVC manufacturing and processing.