7th “Vidas Científicas” Meeting

On Monday 23th of October I’ll have the opportunity to participate in the 7th “Vidas Científicas” (Scientific Lives) meeting, to be held at the Eureka! Zientzia Museoa in San Sebastián. This is an activity aimed to High School students so they can have the chance to meet and talk with scientist from different fields. I’ll be representing the Physics field and, as probably expected, I’ll be talking about Atomic Force Microscopy:

Poster_VidasCientificas

More info about “Vidas Científicas” can be found here (Spanish only).

 

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Molecular dynamics of fully biobased poly(butylene 2,5-furanoate) as revealed by broadband dielectric spectroscopy: Free download until Nov 23th

The successful collaboration with Dr. Soccio led to a paper entitled “Molecular dynamics of fully biobased poly(butylene 2,5-furanoate) as revealed by broadband dielectric spectroscopy”, which is now available as a free download in Polymer, until Nov 23th. Just follow this link and go check it out!!

Summer intern: Iker Castrillo

During this August, I’ve had the pleasure to work next to Iker Castrillo a Summer Intern at the Materials Physics Center. Iker is currently pursuing his Bachelor’s in Nanotechnology at the Universidad Autónoma de Barcelona and during his internship, he had the chance to learn about advanced Atomic Force Microscopy techniques, such as PeakForce QNM and nanoDielectric Spectroscopy. Iker is a wonderful person and I’m pretty sure that he will become a great scientist: I’m looking forward to meeting him again soon.

IMG_3208

 

New paper !! Molecular dynamics of fully biobased poly(butylene 2,5-furanoate) as revealed by broadband dielectric spectroscopy

I’m glad to announce that the collaboration with Michela Soccio at UniBo has allowed us to publish a new manuscript, just accepted in Polymer.

In this paper we present the molecular dynamics of the biobased polymer poly(butylene 2,5-furanoate) (PBF), by broadband dielectric spectroscopy. This material belongs to the family of furane-based polymers that are currently thought as a strong green alternative for terephtalate polyesters as PET. In our work, we have studied the PBF in its amorphous and semicrystalline states. The influence of crystallization was studied in both local and segmental relaxations. Also, we proposed that the PBF amorphous phase of the semicrystalline material was composed by different fractions, including a completely rigid one, with distinctly slower mobilities.

The Full Paper can be found here:
http://www.sciencedirect.com/science/article/pii/S0032386117308698

 

PEO crystals


AFM image of PEO crystals embedded in a PVAc matrix. The size of the PEO phase is about 200  in diameter, while individual crystals have a mean width of 15 nm. Image taken using Peak Force Tapping and ScanAsyst probes. 

Working for a week @IQFR-CSIC in Madrid

I’ve spent last week working with my colleague Esther Rebollar at the Instituto de Química Física Rocasolano (IQFR-CSIC) of the Spanish Research Council in Madrid (Spain). We focused our time on closing two projects related to materials processing by laser interactions and molecular-scale characterization by AFM. In the former case, we prepared laser induced periodic surface structures on different polymer films and under different irradiations conditions, while in the latter, we performed a detailed nanoscale mechanical characterization on the prepared materials by combining PeakForce-QNM and Friction Force Microscopy.

New paper: Ionic transport in the amorphous phase of semicrystalline polyethylene oxide thin films

I’m very pleased to announce that a new paper has just been accepted for publication!! The work describes the use of nanodielectric Spectroscopy for the study of ionic transport processes. We have worked with PEO thin films prepared from different solvents. We’ve found that ionic conductivity is dependent on solvent nature, especifically, the amorphous phase of PEO seems to reorganize as a function of solvent polarity.

The Full Paper can be found here:
http://pubs.rsc.org/en/content/articlelanding/2014/SM/C7SM00651A#!divAbstract