Chapter 14: Polymer Structures – Polymers I: Concept & Synthesis of Polymers ISSUES TO ADDRESS...• How are...
What is a Polymer? Poly mer Many Units repeat repeat ...
What is the Geometry of a Polymer Chain?C-­‐C  rota(ons  along  the  chain  give  the  polymer    molecule  a  ...
What are Important Polymer Concepts & Terminology?
Polymer MW Effects on Properties – Melting Point ...
Free Radical (Addition) Polymerization –  Initiation –  Propagation –  Termination– Free ...
Thermoplastic Addition Polymers - Vinyls Semicrystalline Sem...
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MSEASUSlides: Polymers Part 1- An Introduction Slide Set

This slide set corresponds to the MaterialsConcepts YouTube video "Polymers Part 1- An Introduction". Here is the link: http://www.youtube.com/watch?v=o3dT1DX3Tsc To study the vocab used in this video, visit this site: http://quizlet.com/21161469/61-polymers-ia-concepts-terms-flash-cards/ This work was supported by NSF Grants #0836041 and #1226325.
Published on: Mar 4, 2016
Published in: Education      Technology      Business      
Source: www.slideshare.net


Transcripts - MSEASUSlides: Polymers Part 1- An Introduction Slide Set

  • 1. Chapter 14: Polymer Structures – Polymers I: Concept & Synthesis of Polymers ISSUES TO ADDRESS...• How are polymers synthesized?• How can polymers be categorized?• How do general structural & chemical characteristics of different types of polymer molecules affect mechanical properties?• What are some common polymers & how do they differ? Class 17 – Chapter 14: Polymers I - Structure & Concept - Topic #6.1 1
  • 2. What is a Polymer? Poly mer Many Units repeat repeat repeat unit unit unitH H H H H H H H H H H H H H H H H HC C C C C C C C C C C C C C C C C CH H H H H H H Cl H Cl H Cl H CH3 H CH3 H CH3Polyethylene (PE) Poly(vinyl chloride) (PVC) Polypropylene (PP) 2
  • 3. What is the Geometry of a Polymer Chain?C-­‐C  rota(ons  along  the  chain  give  the  polymer    molecule  a  loosely  coiled  string-­‐like  shape
  • 4. What are Important Polymer Concepts & Terminology?
  • 5. Polymer MW Effects on Properties – Melting Point MW  of  Chain  =  n(DP)  *  MW  Monomer   What are the similarities and differences of candles and plastic milk containers? Why does the Tm increase with more C atoms in chain?                                                                                      =  n(DP)/2   Candle   Container   n  (DP)   11   10,000   28(11)  =  1400  g/mol   28(10000)  =  28000  g/mol   MW  (g/mol)   Extended   15  nm   3100  nm   Chain  Length     Tm  (degrees  C)
  • 6. Free Radical (Addition) Polymerization –  Initiation –  Propagation –  Termination– Free Radical Initiator Benzoyl Peroxide H H H C O O C 2 C O =2R H H H 6
  • 7. Thermoplastic Addition Polymers - Vinyls Semicrystalline Semicrystalline Amorphous Amorphous