An equimolar blend of 1,4-hydroquinone diallylether and ethylene glycol dimercaptoacetate containing a small amount of benzophenone (radical photoinitiator) is polymerized by irradiating the blend with ultraviolet (UV) light. (a) Write a balanced chemical equation for the polymerization. (b) How would you classify this polymerization according to the reaction mechanism? (c) Calculate the extent of reaction needed to produce a polymer with a number average molar mass of 20,000 g/mole (neglect the effect of end groups in the calculation). (d) Draw the structure of the polymer that is obtained when the mole ratio of diallyl ether to dithiol is 1.1. (e) Explain briefly the consequences of including a tetrafunctional thiol in the polymerization with the exact stoichiometry 2:1:4 of difunctional thiol to tetrafunctional thiol to difunctional allylic ether. SH HS 1,4-hydroquinone diallylether Ethylene glycol dimercaptoacetate

An equimolar blend of 1,4-hydroquinone diallylether and ethylene glycol dimercaptoacetate containing a small amount of benzophenone (radical photoinitiator) is polymerized by irradiating the blend with ultraviolet (UV) light. (a) Write a balanced chemical equation for the polymerization. (b) How would you classify this polymerization according to the reaction mechanism? (c) Calculate the extent of reaction needed to produce a polymer with a number average molar mass of 20,000 g/mole (neglect the effect of end groups in the calculation). (d) Draw the structure of the polymer that is obtained when the mole ratio of diallyl ether to dithiol is 1.1. (e) Explain briefly the consequences of including a tetrafunctional thiol in the polymerization with the exact stoichiometry 2:1:4 of difunctional thiol to tetrafunctional thiol to difunctional allylic ether. SH HS 1,4-hydroquinone diallylether Ethylene glycol dimercaptoacetate

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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