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Description:: Conventionally cross-linked polymers, which comprise the vast majority of commercial thermosets, cannot be decross-linked after curing or flow upon heating. Therefore, they cannot be effectively recycled into high-value products at end-of-life. Their lack of recyclability is due to the permanent cross-links, which restrict the flow of the chains in the...
Keyword:: Dynamic, Polymers, Sustainability, Plastics, Recycling, and Crosslinking
Subject:: Materials Science, Sustainability, and Chemical engineering
Creator:: Bin Rusayyis, Mohammed Abdulaziz
Owner:: Scholarly Digital Publishing
Language:: en
Date Uploaded:: 05/31/2023
Date Created:: 2023-01-01
Resource Type:: Dissertation
Alternate Identifier:: etdadmin_upload_986182 and http://dissertations.umi.com/northwestern:16581

Description:: High performance polymers and their composites have wide ranging application in advanced and emerging material systems. The macroscale performance of these advanced materials is often defined by interfaces that induce nanoscale changes in the microstructure or molecular conformations (termed the ‘interphase’) of the polymer. Atomic force microscopy (AFM) is an...
Keyword:: Indentation, Nanoconfinement, Polymers, Atomic Force Microscopy, Nanocomposites, and Additive Manufacturing
Subject:: Nanotechnology, Materials Science, and Mechanical engineering
Creator:: Collinson, David William
Owner:: Scholarly Digital Publishing
Language:: en
Date Uploaded:: 02/01/2021
Date Created:: 2020-01-01
Resource Type:: Dissertation
Alternate Identifier:: http://dissertations.umi.com/northwestern:15360 and etdadmin_upload_775260

Description:: The projected increase in the use of nanomaterials raises concerns about adverse impacts new technologies utilizing these materials may have on the environment. These concerns can be addressed from a chemical perspective by studying how emerging nanomaterials interact with biological systems. Fundamentally, the key interactions for nanomaterial uptake into a...
Keyword:: Nanotechnology, Sustainable, Nano/Bio, Polymers, and Biomimetic
Subject:: Chemistry
Creator:: Alicia McGeachy
Owner:: Scholarly Digital Publishing
Date Uploaded:: 04/09/2019
Date Modified:: 04/09/2019
Date Created:: 2018-01-01
Resource Type:: Dissertation

Description:: Growing concerns associated with global warming and the depletion of oil reserves have motivated significant research in support of sustainable polymers systems. In this thesis, biobased and biodegradable polymer blends and nanocomposites were created using a novel processing method, solid-state shear pulverization (SSSP). This process utilizes a modified twin-screw extruder...
Keyword:: Polymers
Subject:: Chemical and Biological Engineering
Creator:: Amanda Marie Flores
Owner:: Scholarly Digital Publishing
Date Uploaded:: 10/08/2018
Date Modified:: 10/08/2018
Date Created:: 2008-10-14
Resource Type:: Dissertation

Description:: Over the past decade and a half, there has been considerable interest in the effect confinement and interfaces have on the properties of glass forming materials. With the emergence of nanotechnology, some glass formers, in particular polymeric glass formers, will be used at increasingly smaller length scales. An understanding of...
Keyword:: Fluorescence Spectroscopy, Confinement Effects, Polymers, Glass Transition, Physical Aging, and Dielectric Spectroscopy
Subject:: Chemical and Biological Engineering
Creator:: Rodney Dewayne Priestley
Owner:: Scholarly Digital Publishing
Date Uploaded:: 09/12/2018
Date Modified:: 09/12/2018
Date Created:: 2008-05-01
Resource Type:: Dissertation

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