Microwave-Crosslinked Polymer Binder MA-AANa/D Biodegradable in an Aqueous Environment-Selected Own Research.

Area of Science:

• Materials Science
• Polymer Chemistry
• Environmental Science

Background:

• Traditional polymer binders pose environmental challenges.
• Developing sustainable and reusable binders is crucial for the casting industry.

Purpose of the Study:

• To evaluate the reusability and biodegradability of a novel polymer binder, MA-AANa/D.
• To confirm the binder's suitability for casting applications and its environmental safety.

Main Methods:

• Fourier-transform infrared (FT-IR) spectroscopy to analyze microwave-induced crosslinking.
• Bending strength (Rgu) tests to assess binder performance in casting sand.
• Zahn-Wellens test and chemical oxygen demand (UV-Vis) measurements to evaluate biodegradability.

Main Results:

• Microwave radiation effectively crosslinks the MA-AANa/D binder and moulding sand.
• The binder's properties are restored upon simple treatment, demonstrating reusability.
• Achieved bending strength meets requirements for mould and core production.
• MA-AANa/D exhibited significant biodegradability (63.5% R_t after 28 days).

Conclusions:

• The MA-AANa/D polymer binder is reusable in casting processes after microwave-assisted regeneration.
• The binder demonstrates excellent biodegradability, making it an environmentally friendly option.
• This novel binder offers a sustainable solution for the foundry industry.