What bonding between chains is typical of thermoplastic and of thermosetting polymers?
Describe the crystalline and amorphous states in thermoplastic and thermosetting polymers. How many transitions do take place in those polymers? Do you think that every polymer type has a melting point? why or why not?
Q11. 6 points Please Compare thermoplastic and thermosetting polymers (a) on the basis of mechanical characteristics upon heating and (b) according to possible molecular structures. (c) what type of polymer material, thermosetting or thermoplastic, you might select for the following applications: a surgeon’s glove, a beverage container, and a pulley. Q12. 3 points How do the glass-transition temperatures of polyethylene, polypropylene, and polymethyl methacrylate compare? Explain their differences, based on the structure of the monomer of each. Q14. 4 points...
From material's perspective, what are some of the typical challenges for the processing of thermosetting polymers, and what are the measures to alleviate these issues?
please draw the Structure of monomer of the following polymers and classify whether they are thermosetting or thermoplastic? Phenol formaldehyde Polystyrene Polyethylene Nylon 6,6
1. When you compare thermosetting with thermoplastic polymers, which kind do you think is easier to recycle? Explain. 2. Draw the structural formula of the polymer that would be formed from a) CH2 - CHCI may - b) CF2 = CF2 3. Very pure Poly(dimethyl siloxane) is used in many silicon implants such as car prosthesis, chin and breast implant, catheter etc. The polymer is formed according to the reaction : CH, сн. n C1--- Si-CI - HO-Si-OH- 2n H,...
1. What do we mean by thermoplastic polymer? 2. What is the definition of thermosetting polymer? 3. What is glass transition temperature (as it relates to polymers)? 4. What is the meaning of crosslinking as it relates to polymers? a) In terms of tensile strength, melting point etc. how does a crosslinked polymer compare with a non-crosslinked polymer? b) Draw a simple schematic diagram of linear polyethylene and crosslinked polyethylene (chemical structure of ethylene is CH2 = CH2).
4.13 Compare thermoplastic and thermosetting poly- mers (a) on the basis of mechanical characteristics upon heating and (b) according to possible molec- ular structures. 4.13 Compare thermoplastic and thermosetting poly- mers (a) on the basis of mechanical characteristics upon heating and (b) according to possible molec- ular structures.
What is a thermoplastic polymer? Thermoplastics are polymers that can be softened by heat and pressure and then remolded. Thermoplastics are polymers that cannot be melted and remolded. Submit Request Answer Part B What is a good example of a thermoplastic? O Polyester O Polyurethanes Epoxy resin Polyethylene Submit Request Answer
a) What is the difference between thermoplastic and thermosets [at least 5 differences] (10) b) Give some examples for thermoplastic and thermoset polymers (5) c) How is elastomers differ from thermosets, explain in at least two sentences (5)
Answer these two questions 1- Which of the following polymers is crystalline: (a) Starch (b) Thermosetting (c) elastomers (d) polyacrylonitrile 2-Which of the following polymers has copolymer structure: (a) polyethylene (b) nylon 6,6 (c) polystyrène (d) propylene