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Microstructured Products

Microstructured Products. Chemical product engineering asep muhamad samsudin. Chemical Products. Based on the characteristic size scale which is critical to their performance. Cussler and Moggridge.

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Microstructured Products

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  1. Microstructured Products Chemical product engineering asepmuhamadsamsudin

  2. Chemical Products Based on the characteristic size scale which is critical to their performance Cussler and Moggridge Cussler EL, Moggridge GD. Chemical product design. 2nd edition. Cambridge: Cambridge University Press; 2011.

  3. Critical size of Chemical Products

  4. Introduction • “Microstructure” mean chemical organization on the scale of micrometer • Product with microstructure supply added value because of the physical and chemical properties of the microstructure. • The Microstructures help the customer satisfy a specific need. • For the microstructured products, the most difficult step in design is needs step.

  5. Microstructured Products by Industrial Sector

  6. Aerosols Cream and Pastes Liquids and Liquid mixtures Structured Solid

  7. Properties of Microstructures • The physical and chemical properties of microstructures vary widely, partially because their ingredients vary widely. • Fluids are characterized by their viscosity, and solid by their Young’s modulus and yield stress • The Physical properties of microstructured products are often very different to the properties of the ingredients from which they are made. • The physical properties of microstructured products are often complex. The complex properties are often simplified because the continuous phase dominates many of the physical properties. E.g. Sun cream. • Many microstructured products change their structured during use. E.g. Ice cream, paint.

  8. Properties of Microstructures

  9. Properties of Microstructures

  10. Example : Liquid Bandages • Any bandages must meet three chief needs : • they must keep out bacteria and debris, • they must maintain a proper moisture balance, allowing the cut to dry, • they must reduce paint by covering nerve ending. • What microstructure should they have?

  11. Solution • To keeping Cut clean : It must not have any pores larger than the size of bacterium, around 1 µm. • To allow water evaporation : it should have a resistance to water transport which is less than the resistance air surrounding the wound. • To reduce pain : The liquid bandages solution should contain an approved disinfectant, like iodine and use willow sap, which includes salicylic acid, the active part of aspirin

  12. Get Started • The microstructured product design involve two key steps. • The need of product must be expressed as quantitative specification. • The need will be expressed as consumer desires.

  13. Get Started

  14. Need Vs. Physical Properties • Answer three question • How to tell when two properties are related? • Choose the best descriptors • Discover relation between the best descriptors and relevant combination of physical properties.

  15. Specifications

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