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nsity of 1.12 g/cm³ and a weight-average mole sity of 1.10 g/cm³ and a weight-average mole

nsity of 1.12 g/cm³ and a weight-average mole sity of 1.10 g/cm³ and a weight-average mole

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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**15.34** For each of the following pairs of polymers, do the following: (1) State whether it is possible to determine whether one polymer has a higher melting temperature than the other; (2) If it is possible, note which has the higher melting temperature and then cite reason(s) for your choice; and (3) If it is not possible to decide, then state why. (a) Isotactic polystyrene that has a density of 1.12 g/cm³ and a weight-average molecular weight of 150,000 g/mol; syndiotactic polystyrene that has a density of 1.10 g/cm³ and a weight-average molecular weight of 125,000 g/mol (b) Linear polyethylene that has a degree of polymerization of 5000; linear and isotactic polypropylene that has a degree of polymerization of 6500 (c) Branched and isotactic polystyrene that has a degree of polymerization of 4000; linear and isotactic polypropylene that has a degree of polymerization of 7500
Transcribed Image Text:**15.34** For each of the following pairs of polymers, do the following: (1) State whether it is possible to determine whether one polymer has a higher melting temperature than the other; (2) If it is possible, note which has the higher melting temperature and then cite reason(s) for your choice; and (3) If it is not possible to decide, then state why. (a) Isotactic polystyrene that has a density of 1.12 g/cm³ and a weight-average molecular weight of 150,000 g/mol; syndiotactic polystyrene that has a density of 1.10 g/cm³ and a weight-average molecular weight of 125,000 g/mol (b) Linear polyethylene that has a degree of polymerization of 5000; linear and isotactic polypropylene that has a degree of polymerization of 6500 (c) Branched and isotactic polystyrene that has a degree of polymerization of 4000; linear and isotactic polypropylene that has a degree of polymerization of 7500
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