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Search Publications by: Kathryn L. Beers (Fed)

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Displaying 1 - 25 of 196

Life-Cycle Analysis Datasets for Regionalized Plastic Pathways

February 1, 2024
Author(s)
Taemin Kim, Pahola Benavides, Joshua Kneifel, Kate Beers, Zifeng Lu, Troy Hawkins
The carbon intensity (CI) of producing five different resins – polyethylene terephthalate (PET), high-density polyethylene (HDPE), low-density polyethylene (LDPE), polypropylene (PP), and polyvinyl chloride (PVC) – in four different international regions –

Highly Versatile Strategy for the Production of Telechelic Polyolefins

March 3, 2022
Author(s)
Aaron Burkey, Danyon Fischbach, Kathryn L. Beers, Charlotte Wentz, Lawrence Sita
A general and versatile synthetic strategy for producing practical quantities of a wide range of phenyl-groupterminated hetero- and homotelechelic semicrystalline polyethenes and amorphous atactic and semicrystalline isotactic poly(α-olefins) is reported

MALDI TOF MS Analysis of Chan End Functonalized Polymers

October 12, 2021
Author(s)
Kathleen M. Flynn, Barry J. Bauer, Kathryn Beers, S Bencherif, H M. Byrd, Sheng Lin-Gibson
Recently, we and other research laboratories have developed methods whereby an organic species is covalently attached to the polymer forming an organic salt to analyze by matrix assisted laser desorption ionization time of flight mass spectrometry (MALDI

Cutting to Measure the Elasticity and Fracture of Soft Gels

August 31, 2020
Author(s)
Teresa T. Duncan, Joel M. Sarapas, Adrian P. Defante, Kathryn Beers, Edwin Chan
The fracture properties of very soft and/or brittle materials are challenging to measure directly due to the limitations of existing fracture testing methods. To address this issue, we introduce a razorblade-initiated fracture test (RIFT) to measure the

Design and Characterization of an Architecturally Perfect Family of Linear Low-Density Polyethylenes (LLDPEs) by Multi-Detector Size Exclusion Chromatography

March 27, 2020
Author(s)
Sara V. Orski, Luke Kassekert, Wesley Farrell, Grace A. Kenlaw, Marc Hillmyer, Kathryn L. Beers
Separations of commercial polyethylenes, which often involve mixtures and copolymers of linear, short-chain, and long-chain branched chains, can be very challenging to optimize as species with similar hydrodynamic sizes or solubility often co-elute in

Precision, Tunable Deuterated Polyethylene via Polyhomologation

July 22, 2019
Author(s)
Wesley Farrell, Sara Orski, Anthony Kotula, Kathryn Beers, Daniel Baugh
Polyhomologation (also known as "C1 polymerization") of a deuterated ylide has been performed, which yields linear polyethylene of high deuterium content. Copolymerization with the protonated analog allows for the preparation of sta-tistical copolymers, in

Polymer Identification of Plastic Debris Ingested by Pelagic-phase Sea Turtles in the Central Pacific

September 12, 2018
Author(s)
Melissa R. Jung, George H. Balazs, Thierry M. Work, T. T. Jones, Sara Orski, Viviana Rodriguez, Kathryn Beers, S. A. Abriola, K. D. Hyrenbach, Brenda A. Jensen, Jennifer Lynch
Pelagic Pacific sea turtles eat large quantities of plastic. We identified the polymers ingested by 37 olive ridley, 9 green and 4 loggerhead sea turtles caught as bycatch in Pacific longline fisheries using Fourier transform infrared spectroscopy