[article]
| Titre : |
Emerging bio-based materials for surface coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
Ashis A. Pradhan, Auteur ; Rajesh M. Shah, Auteur |
| Année de publication : |
2015 |
| Article en page(s) : |
p. 69-84 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Biomatériaux
Biomolécules
Biopolymères
Chimie écologique
Ressources renouvelables
Revêtements:Peinture
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
A bio-based material is a material intentionally made from substances derived from living (or once-living) organisms whereas biopolymers are macromolecules derived from plants, trees, bacteria, algae, or other sources. They are long chains of molecules linked together through a chemical bond and are usually able to perform the functions of traditional petroleum-based products. Biopolymers exist in nature as cellulose (in cotton, wood, wheat, etc.), proteins, starches, and polyesters. The potential for using these materials to make synthetic polymers was identified in the early 1900s, but they have only recently emerged as a viable material for large-scale commercial use.
While biopolymers can be made from an almost unlimited range of bio-based materials, most of the currently marketed biopolymers are made from vegetable oils and natural polymers such as cellulose & starch. Bio-based materials have the potential to produce fewer greenhouse gases, require less energy, and produce fewer toxic pollutants over their life cycle than products made from fossil fuels. They may also be recyclable or compostable depending on the biomaterial and how they have been produced.
As the cost of petroleum resources increases, making products with biobased materials is increasingly attractive. lncreased demand for agricultural and forest-based feedstocks also offers new resource-based economic development opportunities for farmers and struggling rural communities and manufacturing sectors. Moreover, societal benefits from a shift to biobased materials couId be enormous from long term sustainability point of view. |
| Note de contenu : |
- CLASSIFICATION OF BIO-BASED RAW MATERIALS USED IN PAINT AND COATINGS : Vegetable oil & fatty acid based raw materials - Bio-based natural polymers - Bio-based monomers or building blocks - Bio-based solvents and additives - Para-xylène - Isopropanol - n-Butanol
- CHALLENGES : Cost - Quality & performance - Impact on the food chain
- FIGURES AND MOLECULAR STRUCTURE : Ricinolic acid and lesequerolic acid - Calendic acid and eleostearic acid - Castor acrylated monomer - Amylopectin molecule - Cellulose - Chitosan - Pullulan - Alginate - Fermentation of glucose to bio-succinic acid - Process of manufacturing of biobased styrene - Process of manufacturing of bio based methacrylic acid and methyl methacrylate - Sucrose polyester - Process of manufacturing of biobased lactic acid - Lactide to polyactic acid PLA |
| En ligne : |
https://drive.google.com/file/d/1ATQrrSdsZ2vf_knd4izqvRjdnXezXxN-/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25315 |
in PAINTINDIA > Vol. LXV, N° 12 (12/2015) . - p. 69-84
[article]
|
Aller sur edunet
Accueil
Emerging bio-based materials for surface coatings in PAINTINDIA, Vol. LXV, N° 12 (12/2015)
