《通用高分子材料》课程教学课件（PPT讲稿）Chapter 1 General Polymeric Materials

GeneralPolymericMaterials

General Polymeric Materials

Chapter 1Introduction1.1 Polymer Characteristics andClassifications

Chapter 1 Introduction 1.1 Polymer Characteristics and Classifications

Definitions Polymer - A very long molecule composed ofrepeating units connected by covalent bondsMonomer - A repeated unit in a polymerThe reactant for the polymerization reaction

Definitions ◼ Polymer – A very long molecule composed of repeating units connected by covalent bonds ◼ Monomer – A repeated unit in a polymer. The reactant for the polymerization reaction

Characteristics of PolymerStructure ClassificationSynthesis

Characteristics of Polymer ◼ Structure ◼ Classification ◼ Synthesis

Structure of Polymer Skeletal StructureChemical Structure

Structure of Polymer ◼ Skeletal Structure ◼ Chemical Structure

SkeletalStructureLinear - a chain with two endsR-OO-RHH

Skeletal Structure ◼ Linear – a chain with two ends

Skeletal StructureBranched - have side chains-HH-C-HCI-C-H-H-MACI-C-HHH-C-HCI-C-HH-C-H

Skeletal Structure ◼ Branched – have side chains

Skeletal StructureCrosslinked (Networked) - chains areconnected to other chainsOHHOOHOHHOOHOHOHOHHOOHOHOHHO

Skeletal Structure ◼ Crosslinked (Networked) – chains are connected to other chains

Chemical Structure Homopolymer - only one monomer(repeating unit)A-A-A-A-A-A-A: Copolymer - more than one monomer

Chemical Structure ◼ Homopolymer – only one monomer (repeating unit) - A – A – A – A – A – A – A - ◼ Copolymer – more than one monomer

CopolymersAlternatingA-B-A-B-A-B-A-B-A-A-B-B-A-A-B-B- Block-A-A-A-A-A-B-B-B-B-B-A-A-A-A-A--A-A-A-A-A-A-A-B-B-B-B-B-B-B-

Copolymers ◼ Alternating - A – B – A – B – A – B – A – B - - A – A – B – B – A – A – B – B - ◼ Block -A-A-A-A-A-B-B-B-B-B-A-A-A-A-A- -A-A-A-A-A-A-A-B-B-B-B-B-B-B-