-
+1 - 312-224-1615
Get in touch with us
-
support@helpwithassignment.com
Send us an e-mail
Solution Library
Free Radical Polymerization of Styrene
Question
Free radical polymerization
Styrene is polymerized by free radical polymerization in solution. The initial monomer and initiator concentration are 1 M (mol L-1) and 0.001M, respectively. At the polymerization temperature of 60°C, the initiator efficiency is 0.30. The rate constants at the polymerization temperature are as follows:
kd = 1.2*10-5 s-1
kp= 176 M-1 s-1
kt= 7.2*107 M-1s-1
Given this information determine the following
(a) Rate of initiation at 1 min and 16.6 min
(b) Steady state free radical concentration
(c) Rate of polymerization at 1 min
(d) number-average degree of polymerization at 1 min
(e) Average free-radical lifetime, τ, at 1 min, where τ is defined as the radical concentration divided by the rate of termination
(f) Why is the information to determine the rate of polymerization and number-average degree of polymerization at 1 min important? What will change if the polymerization has been carried out for several hours already? Give qualitative answers?
(g) To what percentage is the molecular weight reduced at a polymerization time of 1 min when we add a chain transfer agent (0.001 M) with a chain transfer constant of Cs= 40. How would this change if we polymerize over several hours to 100% monomer conversion? Give a qualitative answer?
Summary
The question belongs to Chemical Engineering and it is about free radical polymerization. In this question, styrene is polymerized with free radical polymerization. Several question about free radical polymerization have been answered in the solution in detail.
Total Word Count 238
Download Full Solution
WHAT OUR STUDENTS SAY
Initially I hesitated but after talking to one of the nursing assignment experts I was overwhelmed by the fact that she is from my university only and knew all our curriculums. I was so relaxed after that as HwA helped me out with all my assignments and helped me learn new things in nursing.
Fiona McGrath Student
During my second trimester one of my class-mates told me about TheReliableTutor.com. However, back then I thought I do not require any help. But I was proved wrong shortly and contacted them. The nursing assignment tutors are really fantastic and they work tirelessly till you get what you exactly asked for. Really happy with the service I got
William Turner Student
I was very nervous when my thesis proposal submission date came closer. Only a week was remaining when my good friend Josh told me about TheReliableTutor.com. I was not sure but they did a marvelous job. Only within 4 days they prepared a wonderful Thesis Proposal and so I had assigned my entire Thesis to them and was very happy with the grade I got.
Charles Bryan Student
The object oriented programming languages like C++ and Java were a nightmare for me and my professor rushed off with her lectures so fast that I couldn’t catch up with the syllabus. Then once HwA started helped me out with my programming homework I got more time to understand how the things summed up.
Marissa Tan Student
Writing Algorithm is not an easy job! Especially for a third semester student! I was really lost and was not sure about what exactly to do. I was seriously thinking of quitting the course and returning home when I came across TheReliableTutor.com. Since then it is a wonderful experience. Not only that I know the difference between a Java code and MSQL one but also I got good grades and things are looking very positive."
Michel Obi Student
Comments
this is a very good website
I have 50 questions for the same test your page is showing only 28
hi can you please help or guide me to answer my assignments. thanks
hi can anyone help or guide me to my assignments. thanks
This solution is perfect ...thanks
Hello Allison,I love the 2nd image that you did! I also, had never heard of SumoPaint, is something that I will have to exolpre a bit! I understand completely the 52 (or so) youtube videos that you probably watched. Sometimes they have what you want, sometimes they don't! However, it is always satisfying when you are able to produce something that you have taught yourself. Great job!Debra 0 likes
Perfect bank of solution.
great !
thanks for the quick response. the solution looks good. :)
thnx for the answer. it was perfect. just the way i wanted it.
works fine.