Silvia Agnelli

University of Brescia

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Maurizio Galimberti

Politecnico di Milano

Stefano Pandini

University of Brescia

Luciana Sartore

University of Brescia

T. Riccò

University of Brescia

Kamol Dey

University of Chittagong

Francesco Baldi

University of Brescia

Vincenzina Barbera

Politecnico di Milano

Giorgio Ramorino

University of Brescia

Valeria Cipolletti

Politecnico di Milano

Sara Galimberti

University of Pisa

Cooperative Institutions

University of Brescia

Brescia University

Politecnico di Milano

National Interuniversity Consortium of Materials Science and Technology

Azienda Socio Sanitaria Territoriale degli Spedali Civili di Brescia

University of Bologna

University of Milan

National Research Council

University of Padua

University of Pisa

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Sustainable materials for tyres. 1. Natural rubber compounds with better mechanical properties thanks to functionalized nanosized graphite

Computational Intelligence and Security (2019)

Gea Prioglio Silvia Agnelli Winoj Balasooriya Bernd Schrittesser Lucia Conzatti

Source

Cite

Citations (0)

Post-consumer tires as a valuable resource: review of different types of material recovery

Environmental Technology Reviews (2020)

Michèle Battista Anna Gobetti Silvia Agnelli Giorgio Ramorino

Nowadays sustainability is a key topic and waste should be considered a resource. For this reason, a large body of literature is being developed on the management of the large quantity of post-consumer tires with sustainable approaches. The ongoing research activity on tires is focused on providing eco-sustainable solutions aimed, on one hand, at reducing the amount of waste and, on the other hand, at optimizing and improving the technologies and methodologies to obtain 'green' products to be recycled on large scale. This review examines the solutions for the reuse of waste from post-consumer tires proposed in the literature during the last five years (2015–2019) with a focus on advantages, drawbacks and future research developments of each end-of-life tires (ELTs) recovery technology. The final aim is to provide a comparison of different fields of application for the recovery of post- consumer tires, particularly for those researchers who want to start an activity in this field. The results show that the most investigated field of application is the civil engineering area. However, it could be environmentally and socially useful to further investigate solutions suitable for recovery in sanitary applications such as water purification. Porous carbon, obtained from ELTs by pyrolysis and subsequent activation, can be successfully used as adsorbent to remove contaminants that could be harmful to the environment and human health. The latter application seems to be particularly advisable in less economically developed areas as it would represent a possible solution to the problem of environmental reclamation of water resources.

Resource Recovery

10.1080/21622515.2020.1861109

Cite

Citations (21)

A novel and sustainable rubber composite prepared from electric arc furnace slag as carbon black replacement

Carbon Resources Conversion (2024)

Anna Gobetti Giovanna Cornacchia Silvia Agnelli Mattia Ramini Giorgio Ramorino

Carbon black (CB) is the most widely used reinforcing filler for rubber. Nowadays there are several concerns regarding this traditional petroleum-based filler: on one side its environmental footprint is enormous and its production process is no more sustainable and on the other side its price increases annually. For these reasons, sustainable alternative fillers are being studied. In the present research the main waste of the steel industry, namely the steel slag from electric arc furnace (EAF), is investigated as non-conventional filler for a nitrile butadiene rubber matrix (NBR). The slag has been characterized to ensure its safe reuse as filler according to the heavy metals leaching. The slag filled compounds have been characterized and compared to CB filled compounds, in terms of processability by rheometric parameters, mechanical properties, Payne effect, and physicochemical properties to investigate the filler-matrix interaction. From the obtained results, it was shown that EAF slag-filled NBRs are comparable to CB filled NBRs in terms of crosslink kinetics and, when compared at the same hardness level, are comparable in terms of viscosity, stiffness, and elongation at break, while when compared at the same filler volume fraction are similar in terms of compression set and stress relaxation.

Electric arc furnace

Filler (materials)

Slag (welding)

10.1016/j.crcon.2024.100230

Cite

Citations (4)

On the determination of the point of fracture initiation by the load separation criterion in J-testing of ductile polymers

Polymer Testing (2013)

Francesco Baldi Silvia Agnelli T. Riccò

10.1016/j.polymertesting.2013.08.007

Cite

Citations (19)

Interactive effects between carbon allotrope fillers on the mechanical reinforcement of polyisoprene based nanocomposites

eXPRESS Polymer Letters (2014)

Silvia Agnelli Valeria Cipolletti Sara Galimberti Michele Coombs Lucia Conzatti

Interactive effects of carbon allotropes on the mechanical reinforcement of polymer nanocomposites were investigated.Carbon nanotubes (CNT) and nano-graphite with high shape anisotropy (nanoG) were melt blended with poly(1,4cis-isoprene), as the only fillers or in combination with carbon black (CB), measuring the shear modulus at low strain amplitudes for peroxide crosslinked composites.The nanofiller was found to increase the low amplitude storage modulus of the matrix, with or without CB, by a factor depending on nanofiller type and content.This factor, fingerprint of the nanofiller, was higher for CNT than for nanoG.The filler-polymer interfacial area was able to correlate modulus data of composites with CNT, CB and with the hybrid filler system, leading to the construction of a common master curve.

Filler (materials)

10.3144/expresspolymlett.2014.47

Cite

Citations (32)

Determination of the Fracture Resistance of Ductile Polymers: The ESIS TC4 Recent Experience

Materials Performance and Characterization (2020)

Francesco Baldi Silvia Agnelli Luca Andena B.R.K. Blackman Leonardo Castellani

Abstract Round-robin (RR) tests carried out under the direction of the Technical Committee 4, “Polymers, Polymer Composites and Adhesives,” of the European Structural Integrity Society (ESIS TC4) showed that the multispecimen methodology employed for the construction of the crack growth resistance curve (J vs crack extension, Δa) of polymers often does not provide reliable data because of the uncertainties associated with the measurement of Δa. With this in mind, the ESIS TC4 attention has been more recently focused on the analysis of a testing scheme based on the load separation criterion, which does not require the measurement of Δa. With the aim to employ this new approach into a standardized procedure, the degree of reproducibility of the results obtainable with the application of this testing scheme to ductile polymers has been assessed by means of multilaboratory RR testing exercises that started in 2011. An ESIS TC4 reference draft protocol was prepared and 10 laboratories participated in the RR activities. The present work describes the load separation criterion-based testing procedure recently examined by ESIS TC4 and gives a summary of the results obtained in the RR activities, which appear encouraging.

10.1520/mpc20190175

Cite

Citations (6)

RECENT ADVANCEMENTS IN RUBBER NANOCOMPOSITES

Rubber Chemistry and Technology (2014)

Maurizio Galimberti Valeria Cipolletti Sara Galimberti Serena Cioppa G. Peli

ABSTRACT Nanocomposites were prepared via melt blending, based on organically modified clays (OC), carbon nanotubes (CNT), and graphitic nanofillers made by a few layers of graphene (nanoG). In particular, nanocomposites based on a hybrid filler system, with a nanostructured filler such as carbon black (CB), are examined. It is shown that low crystalline order in the interlayer space of a layered nanofiller (such as OC and nanoG) leads to easier delamination. Nanofillers give rise to filler networking at low concentration, particularly in the presence of CB. Hybrid filler systems lead to nanocomposites' having initial moduli that are much higher than those calculated through the sum of the initial modulus of composites containing either only CB or only the nanofiller. Nanofillers enhance the matrix modulus by a multiplication factor that depends only on the nanofiller type and content, regardless of whether the matrix is a neat or a CB-filled polymer. Furthermore, the filler–polymer interfacial area is shown to be a parameter able to correlate the mechanical behavior of both nano-CNT and nanostructured (CB) fillers. By plotting values of the composite initial modulus versus the filler–polymer interfacial area, points due to CB, CNT, and the hybrid CB-CNT system lie on the same curve.

Filler (materials)

Polymer nanocomposite

10.5254/rct.14.86919

Cite

Citations (46)

Preparation and assessment of high performance gelatin-based hydrogels for tissue engineering

Kamol Dey Silvia Agnelli Marialaura Serzanti Patrizia Dell’Era Luciana Sartore

Gelatin

Source

Cite

Citations (0)

Interactive effects between carbon allotropes on the mechanical reinforcement of nanocomposites based on poly(1,4-cis-isoprene)

AIP conference proceedings (2014)

Sara Galimberti Valeria Cipolletti Vincenzina Barbera Silvia Agnelli Stefano Pandini

Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Sara Musto, Valeria Cipolletti, Vincenzina Barbera, Silvia Agnelli, Stefano Pandini, Maurizio Galimberti; Interactive effects between carbon allotropes on the mechanical reinforcement of nanocomposites based on poly(1,4-cis-isoprene). AIP Conf. Proc. 15 May 2014; 1599 (1): 174–177. https://doi.org/10.1063/1.4876806 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAIP Publishing PortfolioAIP Conference Proceedings Search Advanced Search |Citation Search

Icon

Download

10.1063/1.4876806

Cite

Citations (0)

Dynamic freedom: substrate stress relaxation stimulates cell responses

Biomaterials Science (2018)

Kamol Dey Silvia Agnelli Luciana Sartore

Tissue engineers have explored a set of materials cues that can allow control of cell viability and guide cell fate and functions. Although the effect of substrate stiffness on cell fate has been extensively studied and established, the role of substrate stress relaxation, the ability of a substrate to dissipate cell-induced forces, is only emerging. Recently, several studies have demonstrated that substrate stress relaxation is an important mechanical cue for cell spreading, proliferation and differentiation in vitro. In this mini-review, we highlight the influence of substrate stress relaxation on cell behavior and function as well as provide future perspectives. Firstly, we describe the methods used for characterizing the stress relaxation/creep responses of hydrogels along with the molecular origin of viscoelastic properties. Then, we highlight the most recent studies elucidating the stress relaxation effect on cellular behavior using physically cross-linked hydrogels. Finally, we report on an emerging alternative design of tunable viscoelastic hydrogels: chemically cross-linked (reversible linkages) adaptable hydrogels that have been used as stable 3D cell culture platforms for a few years in the era of hydrogel systems.

Stress relaxation

Cell function

10.1039/c8bm01305e

Cite

Citations (55)