POLYMERS.

Slides:



Advertisements
Similar presentations
Learning Goals: Explain the difference between an addition reaction and a condensation polymerization reaction Draw polymer structural diagram, given the.
Advertisements

Polymers. Describe the process of polymerization and identify important natural and synthetic polymers Additional KEY Terms monomer.
Polymers Larry Scheffler Version 1.0.
Chapter 10 Polymers Image source:
Chapter 13 Unsaturated Hydrocarbons
Polymers large molecules made by linking smaller, single unit (monomers) together Many natural polymers form important organic molecules such as DNA, and.
Chemistry Presentation C8 – Condensation polymers C9 – Mechanisms in the organic chemicals industry Seunghwan Lee.
The Structure and Properties of Polymers
POLYMERS. DEFINITIONS Monomer A small molecule with a relatively low molar mass. When many monomers are bonded together, a polymer is formed. Polymer.
Polymers are large molecules made by linking together many smaller molecules, called monomers. Polymerization reactions can either be classified as addition.
1 Example of addition polymers. 2 Synthetic and Biological Polymers Polymers: Macromolecules formed by the covalent attachment of a set of small molecules.
Synthetic and Biological Polymers
Physical-chemical properties of biopolymers.
Starter 1.Which raw material are most plastics made from? 2.Give one important property associated with: a) Kevlarb) poly(ethanol)c) biopol 3. Give an.
POLYMERS.
POLYMER PLANET.
Carbon Based Polymers Mr. Fleming.
Polymers.
Polymers.
CARBON COMPOUNDS The Chemistry of Life. OBJECTIVES Define organic compound and name three elements often found in organic compounds. Explain why Carbon.
Polymers Plastics and Fabrics. What’s a Polymer?  Made up of monomers (single unit)  long chains of many monomers (generally 10 or more) are called.
© 2014 Pearson Education, Inc. Synthetic Polymers Paula Yurkanis Bruice University of California, Santa Barbara Chapter 27.
Warm-Up #38 Predict the products and balance the following reactions. Include the molecular formula, the structural formula and the names of all reactants.
Polymerization Reactions Chemistry II. Types of Polymerization Reactions Addition polymerization – monomers are added together, with no other products.
Polymers Chapter 21.
Unit 2 – Day 9 Polymers.
What is a Polymer? Withrow University High School May 2008.
Polymerization.
Polymer a large molecule of repeating units (monomer)
Polymers are large molecules made by linking together many smaller molecules, called monomers. Polymerization reactions can either be classified as addition.
Section 4The Structure of Matter Organic Compounds 〉 What is an organic compound? 〉 An organic compound is a covalently bonded compound that contains carbon.
What is a Polymer? Withrow University High School May 2008.
There are two main kinds of polymers. Type 1: Addition Polymers Each small molecule adds to the end of a growing chain. Polyethylene is an example Type.
Carbon Compounds Main Ideas Objective Organic Compound Macromolecules
General, Organic, and Biological Chemistry Copyright © 2010 Pearson Education, Inc.1 Chapter 12 Alkenes, Alkynes, and Aromatic Compounds 12.4 Polymers.
Polymers are large molecules made by linking together many smaller molecules, called monomers. monomer symbol n Natural polymers include proteins, carbohydrates.
Organic Polymers.
3.1 - Carbon Compounds Pages Standards Distinguish among the structure and function of the four major organic macromolecules found in living things.
2.3 notes Carbon Compounds. Organic chemistry- study of compounds that contain bonds between C atoms Carbon: -can bond with 4 e- to another atom -can.
10.5 Polymerization These reactions involve the addition of many single “subunits” together to form giant molecules (macromolecules) called polymers.
The Structure and Properties of Polymers Also known as Bonding + Properties.
2.1 Introduction to Polymers. Where do we get silk?
Polymerization Reactions
Polymers. Organic compounds are capable of reaching monumental sizes. Proteins and nucleic acids have thousands of atoms. These molecules are composed.
Chapter 2- Polymer Chemistry
What is a polymer? A long molecule made up from lots of small molecules called monomers.
Polymers (Teacher). The Structure and Properties of Polymers monomer polymer.
Atoms Make Up Molecules
Polymerization.
Synthetic and Biological Polymers
Polymers.
for example: here is the monomer of polyethylene
Polymers.
Polymerization Intro:
BY: MAKAYLA, JONATHAN AND COURTNEY
Polymers ( Session 41 ).
Polymers Learning Objectives: Describe what a polymer is.
Polymers.
Learning Goals: Explain the difference between an addition reaction and a condensation polymerization reaction Draw polymer structural diagram, given.
Organic Chemistry Lesson # 5
Grade distribution for Exam 3
An Introduction to Polymers “Plasticus, that which can be molded”
Section 3: Polymers and Plastics Show plastic to clothing video
Addition polymerisation
Engineering Materials Polymeric materials
Polymers Plastics and Fabrics.
Organic Chemistry Lesson # 4 - Polymers.
Polymers.
Polymers and Polymerization
Presentation transcript:

POLYMERS

What is a polymer? Polymers are large molecules made up small repeating units. The repeating units in a polymer are called monomers. Monomers are linked together in a polymerization reaction. Polymers are widely abundant and may be natural or synthetic. Some examples of polymers are rubber, polyvinyl chloride (PVC), polyethylene, Teflon, Kevlar, carbohydrates, proteins

Addition Polymers Addition polymers result from addition reactions of monomers containing carbon-carbon double bonds. Some examples of addition polymers include polyethene, polypropene, polyvinyl chloride, polystyrene and Teflon

Stages in an Addition Polymerization Reaction There are 3 stages in an addition polymerization reaction. Initiation  an initiating molecule (such as a peroxide) with an unpaired electron forms a bond with one of the C’s in the double bond. Propagation  the “growing” phase. Termination  the unpaired electron ends combine forming a covalent bond ending the reaction.

Condensation Polymers Condensation polymers are formed when monomers are linked together through condensation reactions (removal of water). Examples of condensation polymers include polyester, proteins, carbohydrates and Kevlar

The Effect of Substituted Groups on Polymer Properties The reactivity, solubility and strength of a polymer is due to the groups that are attached to the polymer chain. Teflon (polytetrafluoroethane) for example is very unreactive because the C-F is very strong. Monomers that contain 2 double bonds are able to add to other molecules in two ways which means a single monomer can be incorporated into 2 different polymer chains causing bridges between the polymer chains.

These bridges are called “crosslinks” and may be formed intermittently along the polymer chains. These links between polymer chains are covalent bonds and are much stronger than the van Der Waals forces that would otherwise hold the chains together. As the degree of crosslinking increases so does the strength of the molecule. A high degree of crosslinking will also make the polymers heat resistant and more elastic. Crosslinks may also be formed with inorganic crosslinking agents such as sulfur.

HOMEWORK Pg 102 # 1-3 Pg 107 # 4, 5 of Practice Pg 107 # 1, 3, 5, 6 of Section Pg 111 # 1-3 Pg 113 1, 5, 6