John M.Dealy

John M. Dealy

McGill University

March 23, 1937 – January 15, 2024

The AERC 2025 conference, together with our colleagues from the Rheology Community in Canada, is honored to dedicate a special session, 'Industrial Rheology and Processing,' to the memory of John Dealy—a distinguished figure in the field of rheology and polymer processing. This tribute aims to celebrate his remarkable legacy, not only as a leading researcher and educator but also as a mentor and visionary whose work continues to inspire generations of scientists and engineers. Through this session, we seek to reflect on his profound impact, share memories, and highlight his enduring influence on the academic and industrial communities.

This is not intended to be a list of John Dealy’s achievements, contributions, awards, or publications, but rather a tribute to a towering Figure in the world of Rheology and polymer processing.

Born and educated in the USA, John Dealy joined McGill University, and made Canada his adopted home. He went up the ranks to become a popular Dean of Engineering. In the way of community service, he contributed to a significant improvement in Energy Efficiency in the many McGill buildings.

He was an honest direct man with a sharp mind and keen sense of curiosity, which he lucky for us directed towards making contributions to and illuminating the magical world of Rheology. He had no time for nonsense, but when it came to serious issues, he was always approachable and helpful. He was aware of the world through the eyes of his students and collaborators from very varied parts of the globe. Cultivated towards academic integrity, his students became his ambassadors of Rheology to the world.

He made many important contributions to Rheology and polymer processing not the least of which is his industry-bible book, among several others, “Melt Rheology and its applications”. He had important and much appreciated links with industry. He has numerous publications but the “publish or perish” pressures never forced him to compromise integrity. 

He was most proud of the Society of Rheology Bingham award, which he received in 1998.