'Polymer molecules' diaporamas de présentation

Hydrocarbon Molecules

Hydrocarbon Molecules. Unsaturated: Double and triple bonds C n H 2n C n H 2n-2 eg., Ethylene Acethylene CH 2 =CH 2 CH ? CH C 2 H 4 C 2 H 2. Hydrocarbon Molecules. Saturated: single bonds eg., CH 4 ,C 2 H 6 , C 3 H 8 C n H 2n+2

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PH3-SM (PHY3032) Soft Matter Lecture 9

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Important Points from Last Lecture:

Important Points from Last Lecture:. The root-mean-squared end-to-end distance, < R 2 > 1/2 , of a freely-jointed polymer molecule is N 1/2 a , when there are N repeat units, each of length a .

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KS3 Chemistry

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REACH Industry Update

REACH Industry Update. WERCS US User Group Meeting 2008. Dr. Erwin Annys Sr. Advisor Product & Innovation Policy. REACH: Polymers. WERCS User Group Meeting 2008. Dr. Erwin Annys Sr. Advisor Product & Innovation Policy. Definition.

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Last Lecture:

Last Lecture:. The radius-of-gyration of a polymer, R g , is 1/6 of its root-mean-square end-to-end distance <R 2 > 1/2 . Excluded volume effects cause polymer molecules to swell (in a self-avoiding walk). Elastic (entropic) effects cause a polymer molecule to coil up.

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Last Lecture:

Last Lecture:. The Peclet number, Pe , describes the competition between particle disordering because of Brownian diffusion and particle ordering under a shear stress. At high Pe (high shear strain rate), the particles are more ordered; shear thinning behaviour occurs and h decreases.

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Polymers

Polymers. What is a polymer ?. Important polymers. Plastics Rubbers Proteins Starch Cellulose Lignin Fats PAHs. Polymers from alkenes. Addition reactions. Polymerisation. Other important monomers. PVC is poly vinyl chloride. Vinyl chloride is the common name for chloroethene.

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Fiber: Concept

Fiber: Concept The Textile Institute defined fibre as textile raw material, generally characterized by flexibility, fineness and high ratio of length to thickness. Long chain molecules, Connectivity , inter-molecular bonding.

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plasticizer

short introduction about plasticizers for plastic

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plasticizer

plasticizer for plastics

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ENG2000 Chapter 5 Polymers

ENG2000 Chapter 5 Polymers. Overview. In this chapter we will briefly discuss the material properties of polymers starting from the basic construction of a polymer molecule and finishing with the stress-strain relationship

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POLYMER CRYSTALL I N I TY

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REACH - Monomers

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The Peculiar Mathematical Structure of Non-Newtonian Flows

The Peculiar Mathematical Structure of Non-Newtonian Flows. Meng Xu Department of Mathematics University of Wyoming. Motivation and Goal. Motivation

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FE-2: Continuation of part 1 Polymers, phase diagrams, steel

FE-2: Continuation of part 1 Polymers, phase diagrams, steel. Carbon-based of concern here. One or more monomers joined to form giant molecules. The bonding within a molecule is primarily covalent. Polymer solids held together by: Entanglement of the polymer chains. Van der Waals forces.

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MATERIALS AND AGES

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Colorants are employed in several industries to color garments, plastics, paints, prints, photographs and ceramics.

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