Question

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, CH, -[o-si.] Poly(dimethyl siloxane) a) What type of polymerization is this? b) What other by-product would be formed from such a reaction? 4. Indicate whether any of the following are polymers or not a) Liquid foam ( like shaving cream) b) Jello c) Teflon

Answer 1

ANS-1.Thermoplastics are easily recyclable, compared to thermosetting, because the polymer chain does not degrade when melted down. A thermoset is made of strong polymers that bind together and form one molecule, similar to concrete. ans-4 [b] Gelatin(jello) contains about 18 different amino acids joined together in a chain. Eventually a triple helix (or triple spiral) is the complex molecule that gives the polymer its unique ability to "gel" things. ... The word "gelatin" is from Latin "gelatus" meaning stiff or frozen. [c]Polytetra fluoroethylene, better known as Teflon, is a synthetic fluoropolymer. A synthetic fluoropolymer is a fluorocarbon-based polymer.

Thank very much मीना DATE DUD 2.CH₂ = CHCI - CH₂-cnt cin Polyvinyl chloride (ove EF o (Cf ₂ - Ch. Jn or el Teflon 3. Condensation Polymerization due to the formation of Small molecules. By Product - Hel 4. Polimeric Liquid foom - Polymer if you talked about Shaving Crearm and other Component are present But it is also Colloidal solution - Polymer Jello Teflon – Polymer MWIMMY PAGE 1