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Team Dipole Moment Barry Herndon Corey Parker Leo Pike Luis Whitworth

Liquid Crystal Isotropic Kevlar. Team Dipole Moment Barry Herndon Corey Parker Leo Pike Luis Whitworth. Kevlar. Produced as a LCP using sulfuric acid as the solvent. Forms a solid that is often woven into fabrics and other materials to reinforce them.

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Team Dipole Moment Barry Herndon Corey Parker Leo Pike Luis Whitworth

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  1. Liquid Crystal IsotropicKevlar Team Dipole Moment Barry Herndon Corey Parker Leo Pike Luis Whitworth

  2. Kevlar • Produced as a LCP using sulfuric acid as the solvent. • Forms a solid that is often woven into fabrics and other materials to reinforce them. • Hydrogen bonding, aromatic stacking, and covalent bonds are main factors in high strength. • Two rings and multiple sights for hydrogen bonding allow for this. • Causes cross chain linkages and interactions. • Higher temperatures reduce this strength.

  3. Physical properties • Caused by alignment of individual polymers • Increased strength due to hydrogen bonding • Ultimate Tensile Strength: 2500 MPa • Tensile Strength: 90 MPa • Melting Point: 500 ⁰C • Density: about 1.4 g/cm3 • Highly crystalline

  4. Additives • Viscoelasticity improver • is added to the spinning dope to improve the viscoelasticity of the spinning dope. This allows highly oriented fiber bundles. • Hydrazine • stabilizer; purifying of aromatic diamine by removal of impurities for production of aramid fiber with improved discoloration resistance Modifier or additive use

  5. Gillette Deodorant • Aluminum Zirconium Trichlorohydrex glycol 20% (anhydrous) • Primary antiperspitant • Classified as a moderate hazard, shows strong evidence of being a neurotoxin, moderate evidence of being a human nervous system toxin, limited evidence of organ system toxicity • Cyclopentasiloxane • Skin conditioner, solvent • At moderate doses serves as a threat for organ system toxicity, endocrine disruption, neurotoxicity, and cancer. Has also been suspected to bioaccumulate in the environment and body • Dimethicone • Skin conditioner/protectant • Only expected to be harmful or toxic to organ systems and as an environmental toxin. • Tribehenin • Skin conditioner/penetration enchancer • Non-toxic • Petrolatum • Emollient, moisturizer, UV Absorber • Only suspected risk is as an organ system toxin • Cyclodextrin • Absorbent • Not much research has been done, but used in a wide range of products without much research. • c18-36 Acid Triglyceride • Emollient, skin conditioning • Not suspected to be toxic, though more research needs to be done • ppg-14 Butyl Ether • Skin conditioner • Classified as safe in use for cosmetics

  6. Sources

  7. References • http://www2.dupont.com/Kevlar/en_US/index.html • https://scifinder.cas.org/scifinder/view/scifinder/scifinderExplore.jsf • https://scifinder.cas.org/scifinder/view/scifinder/scifinderExplore.jsf • Perry’s Chemical Engineering Handbook 7th ed. • Ollmann’s Encyclopedia of Industrial Chemistry 6th ed. • Encyclopedia of Materials: Science and Technology 10th vol.

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