free radical polymerisation, Chemistry

free radical polymerisation, Chemistry

Assignment Help:

#ques(a) Given the values below, calculate the concentration of benzoyl peroxide required to prepare polystyrene with a number average molar mass of 400,000 by bulk free radical polymerisation at 60°C, assuming all termination is by combination.

f = 0.6

kd=2×10-6 s-1

kp= 341 M-1 s-1

kt=4×107 M-1s-1

density of styrene = 880 kg m-3.

(b) Calculate the initial radical concentration and initial rate of polymerisation for this reaction.

(c) Given the values below for the activation energies of benzoyl peroxide dissociation, styrene propagation, and styrene termination, and assuming all other parameters remain constant calculate the number average molar mass, initial radical concentration, and initial rate of polymerisation if the reaction is run at 66°C rather than 60°C.

EA dissociation = 115 kJ mol-1

EA propagation = 34 kJ mol -1

EA termination = 10 kJ mol-1tion..

Related Discussions:- free radical polymerisation

Heat transfer, 54) Note: This problem is worth double credit.It is desired ...

54) Note: This problem is worth double credit.It is desired to concentrate a caustic soda solution from 12.5 to 40.0% in a double-effect evaporator. Feed solution at a flow rate of

At 673k which is best reducing agent?, At 673k co is best reducing agent be...

At 673k co is best reducing agent beacause gibs free energy curve is greater.

The outlet temperature, You are interested in modelling a 10 m surge tank ...

You are interested in modelling a 10 m surge tank which holds the products exiting a plug flow reactor, as shown below. One of the purposes of the tank is to heat the reactor prod

Atoms and molecules, How to write chemical formula of hydrogen peroxide

How to write chemical formula of hydrogen peroxide

Electochemistry., unit of ell constant .

unit of ell constant .

Lithium and beryllium, lithium and beryllium markedly differ from other mem...

lithium and beryllium markedly differ from other members of their respective groups

Synthesis of ddt and bhc, Synthesis of DDT and BHC

Synthesis of DDT and BHC

Oxidation, When assigning oxidation numbers and you have to do the math to ...

When assigning oxidation numbers and you have to do the math to find the oxidation number of something in the compound, what are you ultimately trying to get that compound to equal

#Ecell, In a Ecell, why do you flip the value of the smaller value?

In a Ecell, why do you flip the value of the smaller value?

#title.chm 102., structure of 2-ethylbutanoic acid

structure of 2-ethylbutanoic acid

Write Your Message!

Name

Email id

Message

Verfication Code

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd