Related MCQs

• The molecular weight of the polymer, when styrene is polymerized at 60ᵒC, is halved by diluting it with ethyl benzene. What is the value of transfer constant to the solvent, if the dilution factor is 7 and the term 1/Xn0 is 4.8*10-4?
• The transfer constant to the solvent for polymerization of of styrene in toluene at 60ᵒC is 0.125*10-5. How much dilution is required to decrease the molecular weight by 4 times when 1/Xn0 is 3.5*10-4?
• Consider the expression for reciprocal of average degree of polymerization, when styrene is polymerized with t-butyl hydroperoxide at 60ᵒC-1/Xn = 0.6*10-4+10.0Rp+1.73*104 Rp2Calculate the value of initiator transfer constant, if the monomer concentration is 8.35 mol/l and the value of the term kp2 fkd/kt= 3.29*10-9.
• For polymerization of vinyl acetate with hydrogen peroxide at 60ᵒC, the reciprocal of number average degree of polymerization is given by,1/Xn = 1.75*10-4 + 14.0Rp + 5.4*104Rp2What is the value of monomer transfer constant?
• What is the effect of polymer transfer on the polymer product formed by radical polymerization?
• How does the value of solvent transfer constant, CS vary in the solvents with increasing substitution at the α-carbon?
• What is the value of intercept and slope of the straight line, when the term [1/Xn– [(y+2)/(y+1)](kt/kp2)(Rp/[M]2)] is plotted against the ratio [I]/[M], when both monomer and initiator transfer are considered?
• What is the value of intercept, when (1/Xn) is plotted against Rp, if only monomer transfer has a significant occurence?
• What does the effect of chain transfer on Rp depend on?
• WHAT_IS_THE_EFFECT_OF_POLYMER_TRANSFER_ON_THE_POLYMER_PRODUCT_FORMED_BY_RADICAL_POLYMERIZATION??$