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Sustainable Chain Extenders for Recycling Polyesters

Executive Summary Polyesters comprise a significant portion of plastics entering landfills. One issue that limits their recycling is natural degradation during melt processing which lowers their molecular weight and melt viscosity. Reactive chain extenders are often used in this case to build back the molecular weight of the polyester during reprocessing....
Published: 11/23/2022   |   Inventor(s): Muhammad Rabnawaz, Mohamed Abdelwahab, Ajmir Khan
Keywords(s):   Category(s): Materials, Environment, Packaging

Process for Depolymerizing Recycled Polystyrenes

­Executive Summary Each year, billions of lbs of polystyrene and styrene copolymers are discarded as waste and very little is recycled. While some technologies have attempted pyrolysis in fluidized bed reactors or solvent processes to convert the polystyrene back to monomer, high costs, long process times and a myriad of reaction products have...
Published: 12/1/2022   |   Inventor(s): Muhammad Rabnawaz, Ajmir Khan, Vikash Kumar
Keywords(s):   Category(s): Chemicals, Environment, Materials

Rapid Process for Depolymerizing Recycled PET

­Executive Summary Each year, billions of lbs of polyethylene terephthalate (PET) and polyethylene terephthalate glycol (PETG) are discarded as waste. While some of the material is separated, recycled and incorporated into new materials, the degradation of the polymers back to their original monomers (a.k.a. chemical recycling) remains prohibitive...
Published: 11/22/2022   |   Inventor(s): Muhammad Rabnawaz, Ajmir Khan
Keywords(s):   Category(s): Chemicals, Environment, Materials

Process for Recycling Mixed Polyurethanes

­Executive Summary Polyurethane ridged and flexible foams are used in a wide variety of applications in the automotive, industrial and consumer sectors. Since these polymers are crosslinked networks, recycling them for further use remains a challenge. MSU researchers have developed a novel, non solvent based process for processing mixed polyurethanes....
Published: 8/20/2022   |   Inventor(s): Muhammad Rabnawaz, Ajmir Khan
Keywords(s):   Category(s): Materials, Environment

Degradable Unimolecular Nanoparticles

Executive Summary Biodegradable polymers are useful as drug delivery agents. MSU researchers have developed a poly(glycolide) based polymer that forms unimolecular micelles with diameters less than 50 nm. These nanoparticles contain functional groups which provide anchoring sites for drugs, contrast agents or other biological agents. Description of...
Published: 6/8/2021   |   Inventor(s): Gregory Baker, Erin Vogel, Milton Smith, Iii
Keywords(s):   Category(s): Chemicals, Materials, Pharmaceutical, Nanotechnology

Polyazacrown-based Materials for Mercury Capture

Executive Summary Coal burning plants emit significant amounts of mercury to the environment, which is harmful to humans. A variety of processes are currently used to mitigate mercury emissions, but there is a need for more effective approaches. MSU researchers have developed a new polymer and method of synthesis for binding to mercury ions and removing...
Published: 8/20/2022   |   Inventor(s): Mikhail Redko, James Jackson, Volodymyr Tarabara, Julian Taurozzi
Keywords(s):   Category(s): Environment, Materials, Energy

Pb-Ge-Te-Compounds for Thermoelectric Generators or Peltier Arrangements

Executive Summary Thermoelectric devices convert heat into electricity. Conversely, if direct current is applied, heat will be transported from one side to the other (Peltier arrangement) and the device can also act as a heat pump. While some applications exist today, more efficient thermoelectric materials are needed to be practical for a broader...

High-density Plasma for Material Processing

Executive SummaryRF plasma discharges are widely used for materials processing in semiconductor industry and coatings applications. The efficiency of interactions between plasma and materials depends on the plasma density. Conventional RF discharges tend to lose high-energy electrons to the electrodes leading to lower plasma densities and unfavorable...
Published: 8/20/2022   |   Inventor(s): Qi Fan, Thomas Schuelke, Michael Becker, Bocong Zheng
Keywords(s):   Category(s): Materials, Manufacturing Equipment

100% Recyclable, Fluorine- and Plastic-Free Fat, Grease and Water Resistant Paper Coating

Executive SummaryWith a societal push to remove plastics from the food industry, there is a need for alternative packaging solutions. Governments and corporations alike have begun banning various single-use plastic products in favor of protecting the environment. This technology seeks to improve polymer coating materials for paper products. This technology...
Published: 8/20/2022   |   Inventor(s): Muhammad Rabnawaz, Zhao Li
Keywords(s):   Category(s): Advanced Materials, Chemicals, Materials, Packaging

Soft Actuators with Stiffness and Shape Modulation

Executive SummaryAccurate and stable robotic systems have traditionally been constructed using rigid materials. However, soft and deformable structures have seen growing interest and application in recent years because they tend to outperform rigid systems. Soft robotics is a subfield that utilizes soft and deformable features, similar to ones found...
Published: 6/8/2021   |   Inventor(s): Xiaobo Tan, Mohammed Al-Rubaiai, Thassyo Pinto
Keywords(s):   Category(s): Advanced Materials, Materials, Mechanical
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