**About the Editors**

#### **Jes ´us-Mar´ıa Garc´ıa-Mart´ınez**

Jesus-Mar ´ ´ıa Garc´ıa-Mart´ınez holds a Ph.D. in Chemistry (Chemical Engineering) from Universidad Complutense de Madrid (1995), two M.Sc. level degrees, and has received more than 70 highly specialized courses. He is a Tenured Scientist at the Institute of Polymer Science and Technology (ICTP) of the Spanish National Research Council (CSIC). Since 1992, within the Polymer Engineering Group (GIP), he has co-authored more than 180 scientific and/or technical works in topics related to polymer engineering, chemical modification of polymers, heterogeneous materials based on polymers, interphases, and interfaces, polymer composites, polyblends and alloys, organic–inorganic hybrids materials, polymer recycling, quality, and so on. Furthermore, he has participated in more than 32 research and industrial projects (national and international programs) and is co-author of one currently active industrial patent on polymer recycling. From 2000 to 2005, he also assumed the position of Quality Director for the ICTP (CSIC) ISO 17025 Accreditation Project of the ICTP Laboratories. Additionally, Dr. Garc´ıa-Mart´ınez is actively reviewing tasks for WOS, and SCOPUS-indexed journals, with more than 370 reports in the last years, being awarded twice with the Publons Reviewer Awards (2018 2019) and once with the POLYMERS Outstanding Reviewer Award (2019). Editor of more than 60 papers, he has been a guest Editor for many special issues in Q1 journals. Since 2016, he has served as Head of the Department of Chemistry and Properties of Polymer Materials within the ICTP (CSIC).

#### **Emilia P. Collar**

Ph.D. in Industrial Chemistry (U. Complutense, 1986). Since 1990 she has been permanent member of staff (Tenured Scientist) at the Consejo Superior de Investigaciones Cient´ıficas (CSIC), after two years (1986–1988) as CSIC's postdoc fellow and one (1989) as Chemical Engineering Assistant Teacher at the Universidad Complutense de Madrid. In the Polymer Science and Technology Institute (ICTP/CSIC), she works at the Polymer Engineering Group (GIP), founded in 1982 by Prof. O. Laguna, being the GIP's Head since 1999. Between 1990 and 2005, she supervised 6 doctoral theses and 5 post-graduate ones, under 14 research public funds projects, jointly to 18 research private funded contracts issuing 53 technical reports for different companies. Furthermore, from 2001 to 2005, she performed the positions of Technical Director of the Physical and Mechanical Properties Laboratory and Deputy-Technical Director of the Thermal Properties Laboratory under the successful ISO 17025 Accreditation Project for the CSIC/ICTP's Laboratories, ACiTP, commanded by the ICTP's Head. Author and co-author of more than 20 chapters on books, two currently active industrial patents on polymer recycling, and more than 150 papers mainly on SCI Journals, her research work lines deal with polymers and environment under the general frame of heterogeneous materials based on polymers. From 2006 to date, she has participated in three public Spanish-funded research projects and one EU project under its 7th Framework Program.
