06/09/2023
By Danielle Fretwell

The University of Massachusetts Lowell, Department of Plastics Engineering, invites you to attend a Doctoral Proposal by Mansoureh Jamalzadeh on “Sustainable Polymer Processing by Applying Novel Technology."

Candidate Name: Mansoureh Jamalzadeh
Degree: Doctoral
Defense Date: Tuesday, June 20, 2023
Time: 1-3 p.m.
Location: Perry Hall, Room 215
Those interested in attending virtually via Zoom should contact the student (Mansoureh_jamalzadeh@student.uml.edu) at least 24 hours prior to the defense to request access to the meeting.

Committee:
Advisor: Margaret J. Sobkowicz-Kline, Professor, Plastics Engineering, University of Massachusetts Lowell

Committee Members
  • David Kazmer, Professor, Plastics Engineering, University of Massachusetts Lowell
  • Amir Ameli, Assistant Professor, Plastics Engineering, University of Massachusetts Lowell
  • Marina Ruths, Professor, Chemistry Department, University of Massachusetts Lowell
Brief Abstract:

Multilayered polymer-based films present challenges in recycling due to their heterogeneous composition. In many cases, these films are downcycled, landfilled, or incinerated because it is difficult to separate the different layers for mechanical or chemical recycling. The recyclability of these films can, however, be improved through innovative approaches that are environmentally friendly.
Irradiation technology is a technique that can modify polymeric materials' properties. When polymers are irradiated by exposing them to ionizing radiation it can alter their chemical structure. Irradiation technology can be used to recycle plastics more effectively by improving their properties and performance, breaking them down for recycling, and producing advanced polymeric materials. This method is environmentally friendly and economically efficient compared with other recycling methods and enables a more sustainable approach to packaging.
The ultrasonic-assisted process is another innovative processing method for improving polymer-based film recyclability. This technique involves high-frequency ultrasonic vibrations of the molten polymer and can produce polyolefins suitable for multiple applications. A significant reduction in the number of polymer layers inhibiting flexible packaging recyclability can be achieved with an ultrasonic-assisted process, increasing the sustainability of the packaging industry.
In this research, the recyclability challenges posed by multilayered polymer-based films will be addressed by irradiation technology and ultrasonic-assisted process. As a result of these approaches, polymer properties can be modified, complex structures can be broken down, the efficiency of recycling processes can be improved and downcycling, landfilling, and incineration can be reduced. The findings will allow the packaging industry to move toward a more circular, sustainable approach to handling these materials.

All interested students and faculty members are invited to attend the online defense via remote access.