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

Bakelite, Bakelite: It is thermosetting plastics which are most wide...

Bakelite: It is thermosetting plastics which are most widely used and the most important plastics. Preparation: It is formed by condensation reaction of phenol an

Periodic table, feature of s, p, d,f block in periodic table

feature of s, p, d,f block in periodic table

Cycloalkanes., Explain ten methods of preparation of cycloalkanes from stra...

Explain ten methods of preparation of cycloalkanes from straight and branched alkanes

Lubrcants, Respected Mam/Sir Please tell me the detailed inforamtion about ...

Respected Mam/Sir Please tell me the detailed inforamtion about lubricant in metal rubbing

Law of inverse proportion., I want to know about law of inverse proportion ...

I want to know about law of inverse proportion clearly.

Perfumes - chemical in cosmetics, Perfumes: Perfumes are the matters, ...

Perfumes: Perfumes are the matters, utilized to provide fragrance. Several requirements must be fulfilled to make use of a good perfume and any material, that just offers good

Balancing equation, I need to find the balanced formula for calcium hydroxi...

I need to find the balanced formula for calcium hydroxide + potassium carbonatequestion..

Boyles law, 2 applications of boyles law in the field of engineering

2 applications of boyles law in the field of engineering

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