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Filtering by: Keyword Polyurethane Resource type Dissertation

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Description:: Conventional cross-linked polymers are widely used owing to their outstanding stability and performance. However, permanent cross-links in these polymer networks prevent them from being recycled or reprocessed at the end of life, leading to major sustainability and economic losses. The recycling issue associated with polyurethane (PU) thermoset wastes exemplifies such...
Keyword:: Cross-linked polymers, Covalent adaptable networks, Sustainability, Reprocessable polymer networks, Dynamic chemistry, and Polyurethane
Subject:: Chemical engineering
Creator:: Chen, Xi
Owner:: Scholarly Digital Publishing
Language:: en
Date Uploaded:: 01/21/2021
Date Created:: 2020-01-01
Resource Type:: Dissertation
Alternate Identifier:: etdadmin_upload_742695 and http://dissertations.umi.com/northwestern:15099

Description:: Phase separation in segmented polymers provides distinct challenges in regard to their chemical reaction kinetics and characterization. Well studied, it has been shown that structure, phase separation and non-covalent interactions are key factors in the design of elastomeric polyurethanes. Specifically, this dissertation is focused on two areas: the synthesis of...
Keyword:: Fluorescence, Phase Separation, Hybrid, Aromatic Interactions, Non-Isocyanate Polyurethanes, and Polyurethane
Subject:: Chemical and Biological Engineering
Creator:: Elizabeth Dhulst
Owner:: Scholarly Digital Publishing
Date Uploaded:: 04/16/2018
Date Modified:: 04/16/2018
Date Created:: 2017-01-01
Resource Type:: Dissertation

Description:: Polyurethane (PU) is an important commodity polymer with a broad range of applications. Increasing regulations on isocyanates have prompted investigations into alternative routes to PU. Cyclic carbonate aminolysis leading to polyhydroxyurethane (PHU) is a promising alternative. This dissertation describes the first fundamental investigation of the synthesis and properties of segmented,...
Keyword:: Thermoplastic Elastomer, Structure-Property-Relationship, Non-Isocyanate, Polyhydroxyurethane, Cyclic Carbonate Aminolysis, and Polyurethane
Subject:: Chemical and Biological Engineering
Creator:: Goliath Beniah
Owner:: Scholarly Digital Publishing
Date Uploaded:: 02/27/2018
Date Modified:: 02/27/2018
Date Created:: 2017-01-01
Resource Type:: Dissertation

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