Chemical Product Design & Development (CP5070) Joanne Foo (1642399) Pritipal Kaur (1614150) Mohd Syaqif (1614642) DCHE/FT/2B/01

Overview Target User Persona Product Requirements Engineering Concept Test of Proof of Concepts Testing Results Process Flow Diagram Product Life Cycle Prototype Conclusion

Target Users

Product Quality Factors Based on the needs of our persona and target users; The product should be able to maintain dryness of the foot. The product should ensure the comfort of users.

JPS INSOLE

Materials Non-woven fabric Activated Carbon Polyester

Testing for Proof of Concepts

contains trace amounts of minerals, lactic acid, and urea Sweat contains trace amounts of minerals, lactic acid, and urea Properties (g/L) sodium (0.9) potassium (0.2) calcium (0.015) magnesium (0.0013)

Mimicking Sweat for 100 mL of water, we used 0.09 g of salt to mimic sweat produced 100 mL water 0.09 g salt

Engineering Concepts Adsorption Desorption Adsorption = adhesion of atoms, ions or molecules from a gas, liquid or dissolved solid to a surface. This process creates a film of the adsorbate on the surface of the adsorbent. Desorption = phenomenon whereby a substance is released from or through a surface. Keep the sole of the feet dry, so that it can prevent bacteria from growing → preventing odour Desorption so that the spent activated carbon

Testing Procedure: Adsorption Measure 2g of activated carbon in a weighing boat. Put the measured activated carbon between 2 pieces of fabric. Measure out 1.5g of saltwater and pour it over the fabric with activated carbon. Weight was applied to the activated carbon. Weigh out the wet activated carbon.

Testing Procedure: Desorption After the salt water has been adsorbed, leave the activated carbon out to dry for 15 mins. Measure the new mass of activated carbon.

Mass of activated carbon (g) Mass of saltwater adsorbed (g) Results Runs Mass of activated carbon (g) Mass of saltwater (g) Mass of saltwater adsorbed (g) Efficiency (%) 1 2.0092 1.517 0.767 50.6 2 2.0102 1.526 0.698 45.7 3 2.0033 1.509 0.748 49.5

Product Specification From our results, 2g of activated carbon adsorbs 0.74g of “sweat”. A person sweats 5g on average each day. Assuming the person wears the shoe everyday for 12 hours and for 30 days, the shoe sole would require 400g of activated carbon.

Manufacturing Process Continuous Process. Increases productivity, where more units are completed in a certain amount of time. Improves quality of the product since errors are easier to be spotted and corrected.

Process Flow Diagrams

Activated Carbon

Polyester

Non-Woven Fabric

Activated Carbon Insole

Prototype Actual prototype

1 2 3 TOP LAYER Non-woven Fabric MIDDLE LAYER Activated Carbon BOTTOM LAYER Polyester 1 2 3 Redraw the sketch!!!

Prototyping Procedure Grind the activated carbon into powder form using pestle and mortar. Cut the fabric cloth & polyester into the insole shape. Spread a layer of activated carbon on the polyester. Attach the top fabric to the polyester using shoe adhesive.

Some sweat will be absorbed by the fabric layer in contact with the feet. Not all sweat will be adsorbed by activated carbon. Creates a watery base around the carbon if it can’t adsorb anymore. Limitations

OUR PRODUCT WORKS BASED ON OUR USERS NEEDS!! Conclusion OUR PRODUCT WORKS BASED ON OUR USERS NEEDS!! Activated carbon does adsorb water molecules. The fabric used allows “sweat” to pass through. Water molecules are able to desorb from the activated carbon.

THE JPS TEAM PRITIPAL JOANNE SYAQIF

Thank You!