材料导论复习资料.doc

Define the following terms. Condensation polymerization and Free radical polymerization reaction Monomer, Oligomer, the repeating unit Alternating copolymer, Block copolymer Branched Polymer, syndiotactic polymer, atactic polymer Crosslinking, vulcanization Chain Transfer, Initiation, Propagation, and Termination Thermoset and Thermoplastic Glass Transition Temperature Plasticizers, Ziegler-Natta catalysts Compression molding, Extrusion, Injection and Blow molding Multiple choices. Tire cords, the film used as backing for magnetic recording tape in audio and video cassettes, and plastic soft-drink bottles are all composed of what polymers? poly(tetrafluoroethylene) high-density polyethylene nylon poly(ethylene terephthalate) What term is used to indicate a polymerization that occurs without the growth of a chain monomer by monomer, but instead occurs as monomers form dimers, dimers form tetramers, etc.? a. Non-chain b. Discontinuous c. step-growth d. irregular-increment Who developed catalysts that can produce, exclusively, either isotactic or syndiotactic polymers? Carothers Ziegler and Natta Staudinger Goodyear Who gave the macromolecular hypothesis? Carothers Ziegler and Natta Staudinger Goodyear Fabrics or films made of which of the following polymers are most sensitive to damage from solutions of strong bases? a. Nylon b. Polyethylene c. poly(vinyl chloride) d. polystyrene Who produced billiard balls using collodian as a substitute for ivory? Hyatt Stine Goodyear Staudinger In which polymer is -(-CF2-CF2-)n- the repeating unit? Acrilan Orlon Lucite Teflon The repeat unit in a polymer is called the a. monomer b. oligomer c. degree of polymerization d. mer The smallest repeating unit of a polymer is: a. Polymers b. Monomers c. Oligomers d. dimer In a Isotactic polymer, the side groups on a polymer chain are all generally on the same side of the polymer chain. the side groups of the polymer chain generally alternate their orientation from one side to the other.