MOHENDISL.FACULTY OF ENGINEERING ANDNytons areenvirenment)nd lose ther strength in vove when implanted (not good in physiologicalDegradetion rate must match thetime of the host tissue.polymer name)e mol widely wsed and most soccessful products as a temporary support. (not askinBPGA is the simplest aliphaticpolymer,polymer.Capronor is an implantable blodegradahle contraceptive which constitute from- Two common methods of polymerization areandpolymerization (or stepwise addition)reaction (or chain polymerization).Number the structures below with increasing deeradation (1 degrades slowest, 3 degrades fastest)Pamideanhydride. ........16. Describe the differencestructural integrity is

a) Nylons are non-absorbable and lose their strength in vivo when implanted. b) Degradation rate…

FACULTY OF ENG Nylons are environment) and lose their strength in vve when implanted (not good in physiological Degradation rate must mtch the time of the host tissue. polymer name) PGA s the simplest aliphatic polymer. polymer. Capronor is an implantable blodegradable contraceptive which constitute from Two common methods of polymerization are and polymerization (or stepwise addition) reaction (or chain polymerization). Number the structures below with increasing deeradation (1 degrades slowest, 3 degrades fastest) adydeide

FACULTY OF ENG Nylons are environment) and lose their strength in vve when implanted (not good in physiological Degradation rate must mtch the time of the host tissue. polymer name) PGA s the simplest aliphatic polymer. polymer. Capronor is an implantable blodegradable contraceptive which constitute from Two common methods of polymerization are and polymerization (or stepwise addition) reaction (or chain polymerization). Number the structures below with increasing deeradation (1 degrades slowest, 3 degrades fastest) adydeide

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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1.- Why are carbon nanotubes and graphene currently considered as reinforcing additives for polymers? What effect do they have on the polymer? What is the mechanism by which they can enhance the Young’s modulus and tensile strength of a polymer? 2.- Kapton is the trade name of a polyimide a) How would you synthesize this polymer? b) During the first stage of the reaction, poly(amic acid) is formed. If you need to follow this stage of the polymerization, what spectroscopic techniques would you use and what groups should you focus on? c) How would you form Kapton films, which can be used as support for solar sails? d) What are the disadvantages of Kapton that have limited their use? Why does this polymer present this weakness?