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

#title.simple and steam distillation., name 5 organic compound that can be ...

name 5 organic compound that can be purify using simple distillation

Effects of substituents on the acidity of phenols, Effects of substituents ...

Effects of substituents on the acidity of phenols: Existence of electron attracting group, (for example -NO 2 , -X, - NR + 3 ,  -CN, -CHO, -COOH) on the benzene ring increases

Halides has maximum melting point, Which of the following halides has maxim...

Which of the following halides has maximum melting point: (1) NaCl    (2)  NaBr                          (3)  Nal                                                   (4

Cracking - artificial process for manufacture of petrol, Cracking - Artific...

Cracking - Artificial process for manufacture of Petrol It is a method in which high boiling fractions containing higher hydrocarbons are heated strongly to decompose them into

Edta method, explain the principle of EDTA method

explain the principle of EDTA method

Benzyne - organic chemistry, Benzyne - organic chemistry (1) 1, 2-Dideh...

Benzyne - organic chemistry (1) 1, 2-Didehydrobenzene, C 6 H 6 and its derivatives are known as benzyne or arynes and the simplest member is benzyne.      (2) It is neutral re

Purification of water, Q.   What are the requirements of drinking water? Ex...

Q.   What are the requirements of drinking water? Explain various methods used for the sterilization of water for municipal supply. ANS. Requirements of drinking water: The e

Write Your Message!

Captcha
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!

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