IRP FOCOMAT

IRP FOCOMAT

French-Vietnamese International Research Project in New Composite Materials

IRP (LIA) FOCOMAT
2013
Contact:
Dr. Nadine Pébère
Nadine.Pebere@ensiacet.fr

Dr. Tran Dai Lam
tdlam@itt.vast.vn

IRP FOCOMAT
News

Introduction

The IRP (LIA) FOCOMAT “Functional Composite Material” (started in 2013 and renewed in 2017) is managed by Dr. Nadine Pébère (CIRIMAT) in France and Dr. Tran Dai Lam (VAST) in Vietnam.

Missions and research themes

The project aims at developing new composites materials (bulk or thin films systems). The scientific program is divided in three axes:

  1. Development of greener organic coatings
  2. Electrodeposited biomimetic apatite coatings
  3. Polymer composites with reinforcing plant fibers

1. Development of greener organic coatings

Organic coatings are widely used to prevent corrosion of metallic structures because they are easy to apply and cost effective. Corrosion inhibitors are incorporated in organic coatings to provide active corrosion protection. In the past, chromates were the most commonly used inhibitive pigments. However, due to their high toxicity, many studies have been devoted to the development of more environmentally acceptable organic coatings. In this context, our project aims to incorporate non-toxic corrosion inhibitors in organic coatings via natural clays (montmorillonite – MMT or layered double hydroxides – LDH), acting as nano-reservoirs for green inhibitors. The complementary effects of MMT and LDH on the microstructure of the coatings are investigated to search for synergistic effects by using different inhibitors. The study of the inhibitor leaching from the clays and their healing action in the case of damaged coatings will be specifically considered.

2. Biomimetic apatite coatings

A proper design of a bone implant material is aimed to provide the necessary durability, functionality, and biological response for long-term use. In this context, metallic materials, among which stainless steels, are most commonly implemented for load bearing implants. Durability and functionality of the implant are governed not only by the mechanical properties of the bulk material but also by the biological response, i.e. osteointegration that depends mainly on the surface/chemical characteristics of the implantable device. The challenges for electrodeposited coatings are twofold: (i) to be able to co-dope the apatite coating and to control the release kinetics and (ii) to produce coatings in lattices structures made from additive manufacturing (3D approaches), that is becoming the most usual method to produce the implants.

 3. Polymer composites with reinforcing plant fibers

The tailoring of polymer composites with long reinforcing plant fibers is a major issue of research in the domain of structural organic composite. The main advantage of such materials is weight saving. The other issue is to design recyclable materials. This explain that the choice must be restricted to linear polymers i.e. thermoplastics. Now, the difficult point is to be able to make the processing at a temperature that is sufficiently low for avoiding the degradation of the plant fiber. Finally, we focus on biosourced polymers. The reinforcing long fibers are bamboo fibers growing in North Vietnam: Dendrocalamus barbatus. The major interest of bamboo fiber is to possess the highest Young modulus among vegetal fibers. The first keys point is to define a treatment allowing the handling of the fiber during the processing of the composite. Moreover, it must allow a satisfactory interface with the polymeric matrix: the interfacial region is insuring the stress transfer from the matrix to the reinforcing fiber.

Some important dates for the collaboration on the topic “Corrosion and protection” 

November 1999: Do Son School “Corrosion protection”.

1997-2004: FSP “Espoir” Project (financial support for PhD thesis and for equipment).

2005-2012: Cooperation agreement VAST/CNRS “Corrosion and protection of materials”.

2013-2020: LIA “FOCOMAT”.

Organization of international Workshops on Corrosion and Protection of Materials in Hanoi: December 2012, October 2015, September 2018 and the next one planed in September 2020 (shifted in 2021, due to the Covid outbreak).

institutions and laboratories involved

France

  • Dr. Nadine Pébère, CIRIMAT Laboratory, Université de Toulouse

Vietnam

  • Dr. Tran Dai Lam, Director of the Institute of Tropical Technology (Vietnam Academy of Science and Technology) in Hanoi.

Participants to the Workshop CPM 2015, ITT, Hanoi

Participants to the Workshop CPM 2018, ITT, Hanoi

On November 29, 2019, Nadine Pébère received the Friendship Medal, awarded by the President of the Republic of Vietnam, Mr Nguyễn Phú Trọng, in recognition of her strong involvement in the collaboration between Vietnam and France for nearly 25 years.

Assoc. Prof. Dr. TRAN Tuan Anh – vice president of VAST – and Nadine Pébère

After the ceremony of the Friendship Medal.

IEA Feuilles de Graphene

IEA Feuilles de Graphene

French-Vietnamese International Emerging Action in Chemistry

IEA Feuilles de Graphene
2019-2021
Contact:

Nadine Suppo-Essayem
nadine.essayem(at)ircelyon.univ-lyon1.fr

IEA Feuilles de graphene
News

Introduction

The IEAfeuilles de Graphene” deals with new opportunities in catalytic applications offered by graphene.

Missions and research themes

Missions and research themes

Main OBJECTIVES OF THE PROJECT

Graphene, a single-atom-thick two-dimensional (2d) material, has attracted enormous interest because of its great potential in electronics originating from its high electrical conductivity and unique electronic structure.

institutions and laboratories involved

France

  • Coordination : Nadine Suppo-Essayem, Chargée de recherches, Institut de Recherche sur la Catalyse et l’environnement de Lyon, CNRS, Lyon1

    Vietnam

  • Coordination : xxxxxxxx, Vietnam Institute for Industrial Chemistry

    IRP FV-TEL

    IRP FV-TEL

    French-Vietnamese International Research Project Tropical Ecology Laboratory

    IRP FV-TEL

    2018-2021
    Contact:
    Dr. Eric Guilbert
    eric.guilbert(at)mnhn.fr

    Dr. Nguyen Van Sinh
    nvsinh(at)gmail.com

    IRP FV-TEL
    News

    Larva of Pentatomids on their nesting place in the Cuc Phuong National Park. Credit: E. Guilbert

    New 9-Hydroxy-5,6-epoxysterols from the Vietnamese Marine Sponge Ircinia echinata”. Credit : Thi Thanh Van Trinh et al.

    Integrative taxonomy of the Rhinolophus macrotis complex (Chiroptera, Rhinolophidae) in Vietnam and nearby regions. Credits: Vuong Tan Tu and al.

    INTRODUCTION

    The International Research Project France-Vietnam “Tropical Ecology Laboratory” (FV-TEL) is a network of International Laboratories recently set up on similar topics between the CNRS (Ecology and Environment Institute) and the National Museum of Natural History (MNHN) on the one hand, the Vietnam Academy of Science and Technology (VAST) and the Hanoi National University of Education (HNUE) on the other hand. It is managed by Eric Guilbert (MNHN) in France and Nguyen Van Sinh (IEBR) in Vietnam.

    TOPICS

    The IRP FV-TEL promotes:

    • training and improvement of human resources;
    • studies of terrestrial and marine organisms;
    • methodology of conservation and curation of collections;
    • sampling methods involving scuba-diving and tree climbing;
    • improving knowledge on Vietnam biodiversity.

    Projects

    The project is distributed in four work packages (WP) :

    WP 1. Diversity in the Annamite Mountain range

    The Annamitic Range is one of the most important regions of the Indo-Burma hot spot. The area hosts both tropical and typical Palearctic lineages, including many relictual taxa without relatives in the current regional fauna. We aim at understanding the historical causes of the establishment of this fauna focusing on two groups.

    1. Biodiversity and endemism of Orthopteroid insects of the Annamite range (Leaders: Tony Robillard, UMR7205 MNHN/CNRS/UPMC/EPHE, Hong Thai Pham, VNMN-VAST)
    2. Bird community diversity in the Annamite Range (Leaders: Jérôme Fuch, UMR 7205 MNHN/CNRS/UPMC/EPHE, Vuong Tan TU, Institute of Ecology and Biological Resources, Hanoi)

    WP 2. Conservation and Management of Animal Diversity

    Today, forest covers around 44% of the land area of Vietnam. However, primary forest has been highly reduced these last decade and it is now highly fragmented. How drivers affect biological networks? How to manage these drivers and their consequences on biodiversity? Knowledge on ecological processes will provide recommendations for a better conservation and management in two examples.

    1. Assessment and Conservation of Insect Biodiversity in Phia Oac Mountain, northern Vietnam (Leaders: Adeline Soulier, UMR 7179 MNHN/CNRS, Pham Hong Thai, Vietnam National Museum of Nature-VAST, Hanoi)
    2. Diversity and origin of the hypogean fauna of Northern Vietnam (Leaders: Arnaud Faille, UMR 7179 MNHN/CNRS – Institut de Biologia Evolutiva (CSIC-UPF), Vuong Tan TU, Institute of Ecology and Biological Resources, Hanoi)

    WP 3. Diversity and Conservation of Marine Ecosystems

    Marine caves and lakes are peculiar habitats lacking light, having high salinity, poor water exchange which contrasts with surrounding areas. Mangrove is a peculiar ecosystem with specific conditions and biodiversity. This project is a chance to explore marine fields that have not been studied in Vietnam in the past, focusing on two projects.

    1. Chemical ecology in mangroves: implication of secondary metabolites in ecosystem functioning and valorization of new molecules of interest (Leaders: Anne Bousquet-Melou, IMBE; Mai Sy Tuan and Dao Van Tan, Hanoi National University of Education, HNUE).
    2. Vietnamese marine sponges as model of symbiosis at multiple partners (Leaders : Marie-Lise Bourguet-Kondracki, UMR 7245 CNRS/MNHN, Paris, Chau Van Minh and Pham Van Cuong, IMBC, VAST, Hanoï)

    WP4. International Conference & Symposium

    An important component of this FV-TEL is the communication of the results during international meeting aiming at drawing attention to the diversity of Vietnam.

    Organization of Symposia on the diversity and ecology of South Est Asia (Cambodia, Lao, Vietnam. (Leaders: P.-M. Forget, UMR7179 MNHN-CNRS INEE, Nguyen Van Sinh,  IEBR-VAST)

    INSTITUTIONS AND LABORATORIES INVOLVED

    France

    • CNRS UMR7179 (MECADEV)
    • CNRS UMR7205 (ISYEB)
    • CNRS UMR7263 (IMBE)
    • CNRS UMR 7245 (MCAM)

    Vietnam

    • Institute of Ecology and Biological Resources (IEBR)
    • Institute of Tropical Biology (ITB)
    • Institute of Marine Biochemistry (IMBC)
    • Vietnam National Museum of Nature (VNMN)
    • Mangrove Ecosystem Research Centre (MERC)

    IEA ModHVDC

    IEA ModHVDC

    French-Vietnamese International Collaboration Project in Electrical Engineering

    IEA/PICS ModHVDC
    2018-2020
    Contact:
    Dr Gilbert Teyssèdre
    gilbert.teyssedre(at)laplace.univ-tlse.fr

    Dr Thi Thu Nga Vu
    ngavtt(at)epu.edu.vn

    IEA ModHVC
    News

    Electric Power University

    Laboratoire Plasma et Conversion d’Energie – Laplace

    Introduction

    The IEA/PICS ModHVC (International Scientific Research Program), managed by Dr Gilbert Teyssèdre (Senior Researcher at CNRS, Laboratory on Plasma and Energy Conversion –Laplace, Paul Sabatier University of Toulouse and CNRS) is developed in collaboration with Dr Thi Thu Nga Vu (Lecturer, Electric Power University, Hanoï Vietnam) and was awarded for the period 2018-2020.

    CONTEXT AND OBJECTIVES

    Energy transmission networks involving High Voltage Direct Current (HVDC) are currently being developed throughout the world notably for strengthening interconnection between existing networks and for connecting to distributed electrical energy sources issued notably from renewable energy (wind farms, solar power plants, etc.). Very often, part of these HVDC links are submarine or buried, requiring insulated cables. Polyethylene materials tend to be generalized for HV cable insulation due to processing ease. One of the key issues with these materials under DC stress is the prevention space charge accumulation, which represents an early failure mechanism for cables. Specifically, accessories like cable joints and terminations represent weak points in the cable, particularly as regards the hazardous field distribution resulting from the association of insulations of different nature. Indeed, the difficulty is raised by the resistive nature of the field distribution. The aim of this project is to provide modelling approaches of transient and steady state processes occurring in HVDC cable systems, with consideration of non-equilibrium thermal conditions on the cables.

    RESEARCH PROJECT

    The development of a reliable tool for anticipating stress endorsed by the system in service is a necessary step for the design of reliable energy links. A sensible point in these technologies when cables are involved is the joint between consecutive cable sections along with terminations of cables. A workshop has been organized (Sept. 2018) with broad audience at EPU in order to prospect for potential DC links in Vietnam and identify a relevant case study. The project aims at settling reliable model of the stress distribution in 200kV cable joints. The reliability of the model is based on 3 important aspects that are:

    – The relevance of data characterizing materials being used. This encompasses the temperature and field dependence of the conductivity along with the thermal properties of materials;

    – The form of the model, i.e. macroscopic electrical involving permittivity and resistivity vs. charge drift-diffusion model involving charge generation

    – The implementation of relevant modeling tools. A commercial software based on finite element method will be used. Steady state stress as well as transient conditions, both electrically and thermally are considered.

      institutions and laboratories involved

      France
      • Dr Gilbert Teyssèdre and Dr Séverine le Roy (Laboratoire Plasma et Conversion d’Energie – UMR 5213 CNRS-UPS-INP)

      Vietnam
      • Dr Thi Thu Nga Vu and Dr Tung Tran Anh (Electrical Power University Hanoï)

      Drawing of a joint between two sections of HVDC cables.

      Crédits:  Gilbert Teyssedre

      Temperature and field distributions after 3′ and 8h simulated in a cable joint while the cable is energized under a current of 1kA and a Voltage of 200kV. 

      Crédits: Thi Thu Nga Vu

      IEA FISHµBIOM

      IEA FISH(micro)BIOM

      French-Vietnamese International Emerging Action in Marine Biodiversity

      IEA FISHµBIOM
      2019-2021
      Contact:
      Dr. Jean-Christophe Auguet
      jean-christophe-auguet(at)cnrs.fr
      Dr. Bui Van Ngoc
      bui(at)ibt.ac.vn

      IEA FISHµBIOM
      News

      Buying fishes and lobsters in a local fish farm from Nha Trang in order to analyze their intestinal pathobiome and resistome. From the left to the right (Dr Huy Ngyen Quang, Dr JC Auguet, Dr Buy Van Ngoc and Dr Hanh Nguyen Kim)

      Credits: Thierry Bouvier

      Dissection of a lobster intestinal tract at the Institute of Oceanography in Nha Trang

      Credits: Thierry Bouvier

      Collecting water and sediment samples in the bay of Nha Trang in order to characterize the environmental pathobiome and resistome.

      Credits: Thierry Bouvier

      Introduction

      The IEA FISHµBIOM (International Emerging Action Biodiversity and role of FISH MICROBIOMes in coral reef socio-ecosystems) managed by Dr. Jean-Christophe Auguet (MARBEC, University of Montpellier, CNRS, IFREMER, IRD) in collaboration with the MIVEGEC research unit in Montpellier (Dr Anne-Laure Bañuls), the Institute of Biotechnology of Hanoï (IBT, Dr. Bui Van Ngoc), the University of Science and Technology of Hanoï (USTH, Dr. Huy Nguyen Quang) and the Institute of Oceanography of Nha Trang (IO, Dr. Hanh Kim Nguyen) will be effective from 2019 to 2021.

      Missions and research themes

      Fishes represent the principal link between coral reef biodiversity and associated human societies as source of food and income, but also through regulation of ecosystem processes. This resource for millions of people worldwide is however endangered by the ongoing decline of their habitat owing to increasing anthropogenic pressures. Microbiomes, through their influence on the heath, physiology and ecology of their hosts could help in the comprehension of fish adaptations to these changes.

      The FISHµBIOM project represents an unparalleled effort to characterize the biodiversity of microbial communities associated to coral reef fishes. Understanding the mechanisms generating this biodiversity is critical for management of coral reefs, which are endangered hotspots of biodiversity and ecosystem services, as it is a key challenge towards the establishment of relevant conservation strategies. From a social point of view, coral reef ecosystems support ecological and cultural services, especially as protein source for people living close to these ecosystems. The outcome of the project will help to understand and predict how deterioration of the coral ecosystems may alter the nutritional quality of the fishes and ultimately the health of humans. Determining if reef fishes represent potential reservoirs and vectors of pathogens and drug resistance in coastal areas and developing new diagnostic tools are a relevant objective in terms of human and animal health because of the growing importance of zoonotic diseases.

      Main OBJECTIVES OF THE PROJECT

      The general objectives of the project are to assess the biodiversity of microbial communities in the intestinal tract of coral reef fishes and to estimate their influence on their host phenotype and the surrounding socio-ecosystem. More specifically, we will address the following complementary questions:

      • Which lineages of microbes, associated functions and interactions are present in the gut of coral fishes?
      • Do coral reef fishes represent reservoirs and vectors of potentially pathogenic human bacteria (PPHB) and antibiotic resistance genes (ARGs)?
      • How gut microbiome affect growth and condition of coral fishes and their contribution to ecosystem services through food provision and carbon cycling?

      institutions and laboratories involved

      France
      • Marine Biodivesity, Exploitation and Conservation (MARBEC, Université de Montpellier, CNRS, IRD, IFREMER, http://www.umr-marbec.fr)
      • Maladies Infectieuses et Vecteurs : Ecologie, Génétique, Evolution et Contrôle (MIVEGEC, Université de Montpellier, CNRS, IRD, https://mivegec.ird.fr/fr/)

      Vietnam
      • Institute of Biotechnology of Hanoi (IBT, www.ibt.ac.vn/en/)
      • Institute of oceanography of Nha Trang (IO, www.vnio.org.vn)
      • University of Science and Technology of Hanoi (USTH, https://usth.edu.vn/)

      Collecting water and sediment samples in the bay of Nha Trang in order to characterize the environmental pathobiome and resistome.

      Credits: Thierry Bouvier

      Collecting water and sediment samples in the bay of Nha Trang in order to characterize the environmental pathobiome and resistome.

      Credits: Thierry Bouvier