Mycelium-Jute Panel Heat Transfer Project

ISEF Category: Materials Science

Subcategory: Composite Materials  ·  Difficulty: Intermediate  ·  Setup: School Lab  ·  Time: 1 to 2 Months

The Hook

A mushroom can help build a wall. Mycelium, the root-like part of fungi, can bind plant fibers into a lightweight panel. That makes it a smart material to test for insulation. If you can measure how heat moves through it, you can judge whether it belongs in real building materials.

What Is It?

Mycelium-jute biocomposite panels are made when fungal mycelium grows through a plant-fiber matrix, like chopped jute, and acts like natural glue. The fibers give shape and strength. The mycelium fills gaps and locks everything together. Think of it like a living net that hardens into a foam-like solid.

Thermal conductivity tells you how easily heat passes through a material. Low thermal conductivity means better insulation. You can picture heat like people trying to move through a crowded hallway. A dense, tightly packed hallway slows them down. A material with lots of tiny air pockets can do the same for heat.

Your project asks whether these panels can block heat well enough to compete with other low-cost materials. You can also test how growth conditions, fiber ratio, or drying method change the result. That turns a cool bio-material idea into a measurable engineering question.

Why This Is a Good Topic

This is a strong science fair topic because you can change clear variables and measure a real output, thermal conductivity. It connects to insulation, sustainable building materials, and waste reduction. You can learn about material structure, experimental controls, and how to turn sensor data into a usable number. You do not need a full university lab to start, but you do need careful setup and data analysis.

Research Questions

• How does the jute-to-mycelium ratio affect the thermal conductivity of the final panel?
• What is the effect of panel density on heat transfer through mycelium-jute composites?
• Does drying method change the thermal conductivity of mycelium-jute panels?
• To what extent does moisture content alter thermal performance after growth?
• Which mold shape produces the most consistent insulation measurements?
• How does thermal conductivity compare between mycelium-jute panels and a common insulating material?

Basic Materials

• Mycelium spawn or starter culture approved for school use.
• Jute fiber or chopped jute fabric.
• Food-safe or lab-safe molds of the same shape and size.
• Digital kitchen scale with 0.1 g accuracy.
• Arduino board.
• Two or more thermistors or temperature sensors.
• Heated plate or another stable heat source approved by your lab.
• Insulating foam board or thick cardboard to reduce edge heat loss.
• Calipers or a ruler for measuring panel thickness.
• Notebook or spreadsheet for recording measurements.
• Thermal gloves or tongs for safe handling of warm materials.

Advanced Materials

• Guarded hot plate or equivalent thermal conductivity apparatus.
• Data logger compatible with thermistors or thermocouples.
• Calibrated thermistors or thermocouples.
• Environmental chamber or controlled drying cabinet.
• Universal testing machine for density or compression testing.
• Moisture analyzer or precision balance for moisture loss tracking.
• ImageJ for cross-section image analysis.
• Microscope for pore structure inspection.
• Reference insulation materials for comparison, such as cork, foam, or wood fiber board.
• Standard lab containers and sterile tools for growth trials.

Software & Tools

• Arduino IDE: Uploads code to read thermistors and record temperature changes.
• Google Sheets: Organizes trials, calculates averages, and makes graphs.
• ImageJ: Measures pore size, thickness, and cross-section structure from photos.
• RStudio: Runs statistics, compares groups, and checks whether differences are real.
• Tinkercad: Helps you sketch sensor layouts before you build the setup.

Experiment Steps

1. Define the one material variable you will change first, such as fiber ratio, density, or drying method.
2. Design a panel shape and size that keeps every sample comparable.
3. Plan a heat-transfer setup that measures one-sided heating and records temperature on both sides.
4. Build a calibration plan so your sensors and heat source can be checked against known materials.
5. Choose controls that separate material effects from edge losses, room temperature shifts, and moisture.
6. Map out how you will turn raw temperature data into thermal conductivity or a comparison index.

Common Pitfalls

• Letting panel thickness vary from sample to sample, which makes thermal results hard to compare.
• Testing panels before they are fully dry, which can make wet samples look like worse insulators for the wrong reason.
• Ignoring edge heat loss, which can make the center of the panel seem more insulating than it really is.
• Using uncalibrated thermistors, which can shift readings enough to blur small differences between panels.
• Comparing panels with different densities without measuring mass and volume, which hides the real cause of the heat-flow change.

What Makes This Competitive

A competitive project would go beyond a simple before-and-after comparison. You would control density, moisture, and thickness, then use statistics to isolate which factor matters most. A stronger entry would also compare your panels against known insulation materials and explain why the microstructure matches the heat data. If you can connect pore structure, composition, and thermal performance, your project starts to look like real materials research.

Project Variations

• Test how different plant fibers, such as hemp, straw, or jute, change the thermal conductivity of mycelium panels.
• Compare the effect of pressing pressure on density, pore structure, and insulation performance.
• Measure how humidity exposure changes thermal performance over time for the same panel design.

Learn More

• USGS Fungal Biodegradation and Bioproducts resources: Search the USGS site for fungus-based material and biodegradation background.
• NASA Materials Research data: Search NASA for articles on thermal insulation, composite materials, and heat transfer.
• PubMed: Search for review articles on mycelium composites and thermal properties.
• MIT OpenCourseWare Materials Science courses: Find free lecture materials on structure, properties, and composite behavior.
• Composites Part B: Engineering: Search peer-reviewed articles on natural-fiber composites and thermal conductivity through your school or library access.