Robert Hernández Aguirresarobe

Injectable and viscoelastic click alginate hydrogels for spatio-temporal T cell administration in vivo

Jone Berasain, Sara Manzano, Oihane Mitxelena‐Iribarren, Unai Heras et autres

T cell therapies have shown limited success in solid tumors, mainly due to the difficulty of T cells to penetrate the tumor tissue. Here, we develop injectable and viscoelastic click alginate hydrogels for local and sustained delivery of T cells, with the …

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Hierarchical tuning of viscoelasticity in tetra-PEG hydrogels via Au(I)–thiolate coordination

Itziar Insua, Robert Hernández Aguirresarobe, Juliana de Souza Nunes, Damien Dupin et autres

In this study, reversible Au(I)–S coordination species were incorporated into disulfide-linked tetra-PEG hydrogels to examine how exchangeable crosslinks regulate rheological behavior. Small- and large-amplitude oscillatory shear measurements revealed a hierarchical viscoelastic response with two dominant relaxation processes: a slower mode attributed to …

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3D printable polybutylene-succinate-co-adipate/carbon nanotube conductive nanocomposites: Effect of shearing on electrical conductivity

Alodi Pascal, Eneko Iruretagoyena, Itxaso Calafel, Mercedes Fernández et autres

The combination of electrical functionality and the possibility of fabricating 3D shapes by additive manufacturing have been a trend in polymer research in the last years. Among different options, the incorporation of carbon nanofillers, such as multiwalled carbon nanotubes (CNT), is considered …

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Mechanoresponsive and Mechanoadaptative Polymeric Materials. Rheological Perspective

Robert Hernández Aguirresarobe, Mercedes Fernández, Itxaso Calafel

Mechanically responsive materials, i.e. materials that can move macroscopically in response to external stimuli, are at the forefront of material science research. Combining chemical, physical and mechanical properties, they create a new generation of smart materials with predictable behaviors in applications ranging …

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Piezoelectric polylactic acid-based biomaterials: Fundamentals, challenges and opportunities in medical device design

Richard Schönlein, Pravin Bhattarai, Mohammad Raef, Xabier Larrañaga et autres

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Author response for "From rheological concepts to additive manufacturing assessment of hydrogel-based materials for advanced bioprinting applications"

Itxaso Calafel, Miryam Criado‐Gonzalez, Robert Hernández Aguirresarobe, Mercedes Fernández et autres

Vat Photopolymerization of High Molecular Weight Polymer Latexes with Pseudothermoplastic Properties for Recyclability

Jon Ayestarán, Xabier Lopez de Pariza, Fernando Vidal, Clara Vazquez‐Martel et autres

Abstract Additive manufacturing (AM), or 3D printing, has rapidly advanced due to its customization, speed, and precision manufacturing. Traditional vat photopolymerization (VPP) often produces densely cross‐linked, brittle, and non‐reprocessable materials, contributing to plastic waste generation. To address these issues, a UV‐reactive latex …

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Rheological Insight into the 3D Printability of Carboxymethyl Cellulose-Based Hydrogels

Itziar Insua, Oliver Etzold, Itxaso Calafel, Robert Hernández Aguirresarobe et autres

Direct Ink Writing (DIW) is an advanced additive manufacturing 3D-printing technique with significant potential for producing hydrogels in biomedical and engineering applications. This study presents a comprehensive rheological analysis of the yielding and recovery properties critical for ensuring the printability of carboxymethyl …

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Continuous carbon fiber Additive Preforming and its application for the fabrication of epoxy composites

Enrique Hernández‐Murillo, Itziar Otaegi, Itxaso Calafel, Luis Palenzuela et autres

Abstract This study presents Additive Preforming, a novel technique for manufacturing continuous fiber‐reinforced polymer composites. The new technique consists of 3D printing continuous fiber filaments coated with a suitable thermoplastic for the fabrication of continuous fiber preforms. These preforms can eventually be …

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Dynamic heterogeneity and cooperativity in polyurethane-based vitrimers

M. Pieruccini, Mercedes Fernández, Giulia Vozzolo, Marta Ximenis et autres

The complex, non-Maxwellian behaviour observed in the mechanical relaxation of polyurethane-based vitrimers, is analysed in the light of dynamical heterogeneity and cooperativity concepts recently formalized within a statistical mechanical framework. Cooperative effects are highlighted at temperatures significantly higher than calorimetric T g …

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A Light‐Mediated, 3D‐Printable, and Self‐Healable Polymer Electrolyte for Lithium Batteries (Adv. Funct. Mater. 8/2025)

Fermin Elizalde, Sabrina Trano, Jon Ayestarán, Xabier Lopez de Pariza et autres

Self-Healable Polymer Electrolytes In article number 2419034, Haritz Sardon, Federico Bella, and co-workers showcase a newly conceived self-healable polymer electrolyte for lithium batteries. The membranes containing covalent adaptable networks are able to be 3D-printed to meet battery large-scale production, as well as …

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Characterization techniques of hydrogels in healthcare

Itziar Insua, Marcelo Calderón, Itxaso Calafel, Mercedes Fernández et autres

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