| Grant number: | 15/00094-0 |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| Start date: | July 01, 2016 |
| End date: | August 31, 2020 |
| Field of knowledge: | Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials |
| Principal Investigator: | Luiz Henrique Capparelli Mattoso |
| Grantee: | Raja Sebastian |
| Host Institution: | Embrapa Instrumentação Agropecuária. Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA). São Carlos , SP, Brazil |
| Associated scholarship(s): | 17/22017-3 - Near - infrared (NIR) cellulose nanocrystals (NIR - CNC) for cellular bioimaging, BE.EP.PD |
Abstract Cellulose, one of the world's most abundant, natural and renewable biopolymer resources, is widely present in various fibrous crops species and agroindustrial waste. Cellulose in the form of nanocrystals commonly reported as whisker or cellulose nanofiber. The structure of nanocellulose is highly crystalline and exploiting their properties as reinforcement. Recently, cellulose nanowhiskers have demonstrated the possibility of obtaining a raw material of renewable origin with potential applications as paper and paperboard manufacture, low calorie replacement in food industry, hygiene and absorbent products, oil recovery, etc. Cellulose nanowhiskers can be used as reinforcing fillers with low levels added to the polymer matrix and with the possibility of achieving properties similar to those of engineering polymers. Cellulose nanowhiskers are a hydrophilic material due to the large amount of hydroxyl groups of cellulose which are hindering the interfacial adhesion between matrix and load due to the more hydrophobic character of polymers for the application of nanocomposite materials. However, surface modification on the load would be the promising strategy in order to increase the adhesion between the polymer matrix and the reinforcing filler. Therefore, this proposal demonstrates surface functionalization of cellulose nanowhiskers, evaluating new methods that alter the chemical nature of the surface and simultaneously preserve the crystalline structure of this material. Resulting materials might have potential application as nanocomposite material with greater adhesion between matrix and load in addition to expanding the use of cellulose derivatives. (AU) | |
| News published in Agência FAPESP Newsletter about the scholarship: | |
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