Density-Adjustable Bio-Based Polysulfide Composite Prepared by Inverse Vulcanization and Bio-Based Fillers

Area of Science:

• Materials Science
• Polymer Chemistry
• Sustainable Chemistry

Background:

• Excess sulfur presents a significant global challenge in the petrochemical industry.
• Cottonseed oil (CSO) is an abundant, cost-effective, yet underutilized bio-based resource.

Purpose of the Study:

• To develop novel bio-based polysulfide composites using cottonseed oil and sulfur.
• To investigate the impact of various fillers on the properties of these composites.
• To create density-adjustable materials for industrial applications.

Main Methods:

• Preparation of bio-based polysulfide composites via inverse vulcanization of sulfur and CSO.
• Incorporation of fillers (Elm and cattail) to adjust composite density.
• Analysis of composite thermal properties, chemical structures, and morphologies.

Main Results:

• The inverse vulcanization successfully produced polysulfide composites from sulfur and CSO.
• Elm and cattail fillers did not affect the thermal properties or chemical structures of the composites.
• Fillers significantly influenced the composite morphologies, creating distinct holes and folds based on type and amount.
• Fillers were integrated into the composites through physical filling.

Conclusions:

• This research presents a promising and cost-effective method for creating density-adjustable, bio-based polysulfide composites.
• The study demonstrates a viable approach to utilize cottonseed oil and address excess sulfur issues.
• The findings highlight the potential of tailored filler incorporation for controlling composite morphology.