Team Dipole Moment Barry Herndon Corey Parker Leo Pike Luis Whitworth.

Slides:



Advertisements
Similar presentations
C11 Liquid Crystals (HL) C11.1 Identify molecules that are likely to show liquid-crystal properties, and explain their liquid-crystal behavior on a molecular.
Advertisements

Polistiren Polietilen Nylon 6,6 *The polar ester groups make for strong crystals. *In addition, the aromatic rings like to stack together in an orderly.
Learning Goals: Explain the difference between an addition reaction and a condensation polymerization reaction Draw polymer structural diagram, given the.
These aren’t really ‘properties’ – more like definitions that relate to what’s happening microscopically. The goal here is to relate structure to properties.
The Chemical Basis of Life
Kevlar Derek Leas.
Matt Bobinski Karen Cariaga Zane Gravino HIGH FIBER.
One Upon a Time Organic compounds – compounds obtained from living organisms Inorganic compounds – compounds obtained from non living things.
Cody Ford.  Once classified as a Carcinogen, but removed due to lack of evidence.
AP ENVIRONMENTAL SCIENCE POLLUTION NO.2 AP EXAM REVIEW QUESTIONS Answer the following questions on a sheet of paper. Check your answers by the final slide.
Boiling Point of Molecules - How strong molecules are interacting with each other - The larger the dipole moment, the stronger the interaction ++ --
Polymers for heavy engineering applications. PEEK Chemical Resistance Since PEEK™ polymer is semi-crystalline, it is insoluble in all common solvents.
Aromatic Polyamides “Aramids” Beth Neilson CH 392N February 19, 2009.
Polystyrene Polyethylene Nylon 6,6 *The polar ester groups make for strong crystals. *In addition, the aromatic rings like to stack together in an.
FIBROUS REINFORCEMENT Structure: 1.Continuous bundles of fibers. 2.Woven fabrics. 3.Chopped fiber.
Basic Chemistry for Biology Water and Solutions. Water’s Life Supporting Properties Important to all living things 1.Moderation of temperature 2.Lower.
 melting point :1263 °C  boiling point: 2260 °C  physical state at room temperature: Solid  colour: white  density: g/cm 3  solubility in.
Exploring materials. Polymers and composites Carbon chains- straight chains, branched chains, rings. Most polymers and composites consists of these three.
Synthetic Condensation polymers: Dacron & Nylon 6AS Group 3 Kitty Au-Yeung Giselle Ho Rachel Chui Cici Tam Angela Tsui.
Science Update Programme Liquid Crystals and Their Applications
Reinforcements.
MAE 661 Laminated Composites Introduction Materials and Processes
CHEMISTRY 122 Alcohols and Ethers. Alcohols An alcohol is an organic compound that contains the functional group – OH (hydroxyl) They can be organized.
Project presentation Masters Project in Mechanical Engineering Rensselaer Polytechnic Institute Reduction of Friction in a plastic reciprocating arm By.
Group members: Katie Chan (3) Odilia Chan (4) Hilary Chang (5) Rachel Chen (6) Charlotte Lee (18)
Polyethylene naphthalate (PEN) Moni Muraki Heidi Pecoraro CHEM 231 November 28, 2005.
CE 336 Material Properties Atomic Structure determines: Physical Properties Chemical Properties Biological Properties Electromagnetic Properties.
Mechanical Engineering Department Advanced Composites Dr. Talal Mandourah 1 Lecture 7 & 8 Comparison of Fibers.
What are the 4 main elements in the human body? How does a covalent bond differ from an ionic bond?
By: Nadia and Tiffany and Kemuelle. Covalent Network: Linear Chain.
CE 241 MATERIALS SCIENCE Introduction
1. 2 Plastic compounding…… 3 4 Where is used compounding of plastics Industries Served:  Construction  Auto  Wire and Cable  Durables  Consumer.
Changes in Matter Chapter Eighteen: The Chemistry of Living Systems 18.1 The Chemistry of Carbon 18.2 Protein, Fats, and Nucleic Acids.
Carbon & Polymers. Review... 1.Why does the carbon atom model have 4 holes? 2.What is so special about carbon?
Novel Cellulosic Fibers with Microcellular Porous Structures By Khaled El-Tahlawy, and Renzo Shamey T extile Engineering, Chemistry and Science College.
Copyright © 2011, Carnegie Mellon University. All Rights Reserved. Design of Polymers for Industrial Applications: Kevlar and Teflon.
THE EFFECTS OF HAZARDOUS MATERIALS ON THE BODY
Fabric Development, Inc.
Section 3: Chemical Hazards What are toxic and hazardous chemicals? What are some possible impacts from chemical hazards? Are hormonally active agents.
Epoxy (Polyepoxide) Gerardo De Leon MEEN Epoxy ( Polyepoxide)
Recap – Last Lecture A molecule is polar if it contains polar bonds and is of asymmetric shape. σ-bonds have electron density along the bond axis. π-bonds.
A level Product Design Unit 2
20.4 Condensation Reactions. Assessment Statements Describe, using equations, the reactions with alcohol with carboxylic acids to form esters and.
Intermolecular Forces
Chapter 2 Families of Carbon Compounds. Basic Definitions Hydrocarbons- Compounds containing only carbon and hydrogen. Alkanes- hydrocarbons that contain.
Plastic material basics
Intermolecular Forces
材料科学与工程专业英语 Special English for Materials Science and Engineering
Polystyrene. Polystyrene Polyethylene Nylon 6,6.
Emergence of Modern Science
Covalent Network Solids
Iqra abdul rashid Polymer Engineering department
BASIC ENVIRONMENTAL TOXICOLOGY
Bonding and Structure in Solids
Molecular weight molecular weight CH4 CH3 - CH2 _ CH3 CH3 - CH3
Classification of polymers according to their thermal behaviours:
Structure, Polarity & Physical Properties
BIOCHEMISTRY Chemistry of Life.
Physics/Chemical Engineering/Math
AQA BONDING, STRUCTURE AND THE PROPERTIES OF MATTER 2
Toxins.
Composites Aerospace Engineering © 2011 Project Lead The Way, Inc.
Boiling Point of Molecules
Chapter 6: Chemistry in Biology
Competition between Mesogens in Pyridone-Based Supramolecular Calamitic, Banana, and Discotic Liquid Crystals Kurt N. Wiegel. Department of Chemistry,
Intro to Chemistry.
Changes in Matter. Changes in Matter Chapter Eighteen: The Chemistry of Living Systems 18.1 The Chemistry of Carbon 18.2 Protein, Fats, and Nucleic.
Warm-up For the following molecules, draw the Lewis diagram, determine the shape, and decide if it’s polar or non-polar. H2Se CO2 CF4 CH2F2.
Aramid Manufactured Fiber
Organic/Bio Chemistry
Presentation transcript:

Team Dipole Moment Barry Herndon Corey Parker Leo Pike Luis Whitworth

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.

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

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

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

SourceQuality InformationLack of Information SciFinderPatents, Physical PropertiesDefinition of Liquid Crystal Internet- GoogleStructures, MorphologyHard to trust Internet- DupontUV DegradationVery vague Perry’s Chemical Engineering Handbook and other Encycolpedias Definition of Liquid CrystalNothing on Kevlar.

Perry’s Chemical Engineering Handbook 7 th ed. Ollmann’s Encyclopedia of Industrial Chemistry 6 th ed. Encyclopedia of Materials: Science and Technology 10 th vol.