Chemistry Reference
In-Depth Information
Section 7.13
1. Discuss the chemistry of urea-formaldehyde resins, their preparation, and uses.
2. Do the same as question one for melamine-formaldehyde resins.
Section 7.14
1. How do silicon compounds differ from carbon compounds?
2. How can the starting materials be prepared for the silicone resins?
3. How are high molecular weight silicone resins formed by ring opening polymerization? What are
the products from acid catalysis and basic catalysis?
4. Describe silicone elastomers. What are RTV-s, explain and show the way they are cross-linked.
5. Discuss fluorosilicone elastomers.
6. Discuss polyarylsiloxanes.
Section 7.15
1. Why is there an interest in polysilanes? Show by chemical reactions how are they formed.
Section 7.16
1. What are polyphosphazines, how are they formed and used?
Section 7.17
1. What chemical options are available to improve heat stability and toughness of polymeric
materials?
2. Discuss fluorine containing aromatic polymers.
3. Discuss the chemistry of preparation of polyphenylene.
4. Discuss Diels-Alder polymers giving at least four examples and showing all the structures of the
starting materials and the products.
5. Discuss silicon-containing aromatic polymers.
6. What are direct condensation polymers? How are polybenzimidazoles, polybezoxazoles,
polybenzthiazoles, polyoxidiazoles, polybenzotriazoles, and polysulfodiazoles prepared? Illustrate
with chemical equations.
7. Discuss the chemistry of oligomers that are terminated by functional groups to form thermoset,
high heat-resistant materials.
8. What are cardo polymers, what are their advantages, and how are they prepared?
9. Discuss double-stranded polymers and how they are prepared.
10. Discuss the chemistry of poly(arylene ether)s and poly(arylene ketone)s.
