Q_ The product of poly ethylene contains twelve molecules, four of the molecules have Dp-220. three of the molecules have Dp- 370. five of the molecules have Dp=110.Calculate the Mn, Mv, K, and (relative and specific viscosity). If time of descent solvent and Polymer (10. 15 sec ) respectively, MWD= 0.88. a= 1?

Q_ The product of poly ethylene contains twelve molecules, four of the molecules have Dp-220. three of the molecules have Dp- 370. five of the molecules have Dp=110.Calculate the Mn, Mv, K, and (relative and specific viscosity). If time of descent solvent and Polymer (10. 15 sec ) respectively, MWD= 0.88. a= 1?

Organic Chemistry

8th Edition

ISBN:9781305580350

Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Chapter29: Organic Polymer Chemistry

Section: Chapter Questions

Problem 29.12P

See similar textbooks

Similar questions

In a non-acid catalyzed step-growth polymerization between A-A and B-B monomers, the A groups are titratable by aqueous base (1 N) and [A-A] [B-B) = 6 mol.kg-1. a) What is the DP if it takes 100 mL of base to neutralize the reaction mixture at 700 minutes of reaction time (assuming the initial total weight 500 g)?...
Consider three hypotheticals monodisperse polystyrene, with M=10,000, M= 100,000, and M=1,000,000. For each, calculate weight average molecular weight (Mw) and number average molecular weight (Mn) Ref: Billmeyer, F.W. textbook of polymer science 3rd ed after adding the following to 100 parts by weight of the polymer with M = 100,000 1) 20 parts by weight of the polymer with M =10,000
Radical polymerization of styrene gives a linear polymer. Radical polymerization of a mixture of styrene and 1,4-divinylbenzene gives a cross-linked network polymer of the type shown in Figure 29.1. Show by drawing structural formulas how incorporation of a few percent of 1,4-divinylbenzene in the polymerization mixture gives a cross-linked polymer.
8. When an equilibrium step-growth polymerization is 99% complete, what fraction of the reaction mixture is still monomer (a) on mole basis and (b) on weight basis ?
On the same axes, sketch the extent of reaction (p) vs time for (i) uncatalyzed and (ii) catalyzed condensation polymerizations. On a new set of axes, sketch the number-average molecular weight (Mn) vs time for (i) uncatalyzed and (ii) catalyzed condensation polymerizations
Write chemical reactions illustrating a polymerization mechanism involving the monomers listed below. Would the reactions be considered step growth or chain growth? Explain and support
Determine: (i) The weight average molecular weight and the degree ofpolymerization. (ii)The number average molecular weight and the degree ofpolymerization.(iii) What is the polydispersity index for this material?(b) A sample of a polyethylene rope weighs 15.12 g per cm. If each chaincontains 7000 repeat units, calculate, the number of polyethylene chains ina 3 m rope.
Draw/sketch and describe a three dimensional representation of a isotactic polyvinyl bromide with a degree of polymerization equal to 6
Polymerization of 1 3 -hexadiene can yield in either cis (Z) or trans (E) polymer.on the other hand the polymerization of 1 4 -hexadiene will not have any isomer.Why?
. At room temperature, classify the following materials as elastomers, TP or TS polymers:a) a lightly cross-linked copolymer with Tg = -45 oCb) a branched polypropylene of Tg = -8 oCc) epoxy resin matrix in advanced composites
Show three units of a linear silicone polymer made from (CH₃)₂Si(OH)₂ with some (CH₃)₃SiOH added to end the chain.
Linear polyethylene and poly tetrafluoroethylene (PTFE, or Teflon) have similar covalent bond strengths and similar chain rotation flexibility. Both form flexible, semi-crystalline polymers, but polyethylene is easily melt processed whilt PTFE cannot be made to flow. What is the likely reason for the difference? (TYPE IT).