| Title: |
Development of sunflower-based insulation materials coated with glycerol esters to prevent microbial growth |
| Authors: |
Verdier, Thomas; Montibus, Mathilde; Balthazar, L.; Magniont, Camille; Evon, Philippe; Bertron, Alexandra |
| Contributors: |
Laboratoire Matériaux et Durabilité des constructions (LMDC); Institut National des Sciences Appliquées - Toulouse (INSA Toulouse); Institut National des Sciences Appliquées (INSA)-Communauté d'universités et établissements de Toulouse (Comue de Toulouse)-Institut National des Sciences Appliquées (INSA)-Communauté d'universités et établissements de Toulouse (Comue de Toulouse)-Université Toulouse III - Paul Sabatier (UT3); Communauté d'universités et établissements de Toulouse (Comue de Toulouse); Institut Universitaire de Technologie - Paul Sabatier (IUT Toulouse Auch Castres); Université Toulouse III - Paul Sabatier (UT3); Communauté d'universités et établissements de Toulouse (Comue de Toulouse)-Communauté d'universités et établissements de Toulouse (Comue de Toulouse); Institut Technologique Forêt Cellulose Bois-construction Ameublement (FCBA); Chimie Agro-Industrielle (CAI); Institut National de la Recherche Agronomique (INRA)-Ecole nationale supérieure des ingénieurs en arts chimiques et technologiques (ENSIACET); Institut National Polytechnique (Toulouse) (Toulouse INP); Communauté d'universités et établissements de Toulouse (Comue de Toulouse)-Communauté d'universités et établissements de Toulouse (Comue de Toulouse)-Institut National Polytechnique (Toulouse) (Toulouse INP) |
| Source: |
Proceeding of the 3rd International Conference on Bio-Based Building Materials (ICBBM 2019) ; 3rd International Conference on Bio-Based Building Materials (ICBBM 2019) ; https://hal.science/hal-03619524 ; 3rd International Conference on Bio-Based Building Materials (ICBBM 2019), Jun 2019, Belfast, United Kingdom. pp.50-56 |
| Publisher Information: |
CCSD |
| Publication Year: |
2019 |
| Collection: |
Université Toulouse III - Paul Sabatier: HAL-UPS |
| Subject Terms: |
Glycerol esters; Microbial growth; Building; Bio-based materials; Insulation; [SDE.IE]Environmental Sciences/Environmental Engineering; [SDV.EE]Life Sciences [q-bio]/Ecology; environment |
| Subject Geographic: |
Belfast; United Kingdom |
| Description: |
International audience ; It is now well known that, under specific environmental conditions, building materials may be the target of microbial proliferation. Their growth leads to the deterioration of both materials and indoor air quality (indirectly induced by the release of airborne microbial contaminants, including spores, fragments, toxins, mVOC, etc.). As bio-based building materials usually contain cellulose or derivatives, they are likely to be much more sensitive to such degradations. However, very few studies have shown precise hygrometric conditions that allow microbial growth and spread on this type of material. Glycerol esters are valuable by-products of agroindustry. Previous works have highlighted their significant antimicrobial effect. They are commonly used in the food industry as antimicrobial agents. They could be used as well to protect bio-based materials from microbial colonization. It would be an eco-friendly alternative, consistent with human health, to the classic ways of protecting bio-based materials against microorganisms. Two types of insulation bio-based materials were designed from sunflower stalk particles. A “light” type was casted from pith and a “denser” one was casted from extruded bark, i.e. the depithed stalk. Physical, thermal and hygric performances of the insulating panels were assessed (density, thermal conductivity, water vapor permeability and vapor sorption isotherm). Minimum inhibitory concentrations (MIC) of glycerol esters on two fungal strains were evaluated. Then, the antimicrobial properties of the coated materials were investigated under severe conditions favoring microbial growth. |
| Document Type: |
conference object |
| Language: |
English |
| Availability: |
https://hal.science/hal-03619524; https://hal.science/hal-03619524v1/document; https://hal.science/hal-03619524v1/file/Verdier_24117.pdf |
| Rights: |
info:eu-repo/semantics/OpenAccess |
| Accession Number: |
edsbas.E97BCA0C |
| Database: |
BASE |