Tags

Type your tag names separated by a space and hit enter

Bio-based nanocomposites obtained through covalent linkage between chitosan and cellulose nanocrystals.
Carbohydr Polym. 2012 Sep 01; 90(1):210-7.CP

Abstract

Bio-based nanocomposites were obtained through covalent linkage between cellulose nanocrystals (CNCs) and the natural polymer chitosan (CH). The CNCs were first functionalized with methyl adipoyl chloride (MAC) and the reactive end groups on the surface of the CNCs were reacted with the amino groups of the CH biopolymer in an aqueous medium. The functionalized CNCs and the resulting nanocomposites were characterized using FTIR, TEM, XRD, and elemental analyses. Characterization of the functionalized CNCs showed that up to 8% of the hydroxyl groups in the nanocrystals were substituted by the MAC residue. The covalent linkage between the CNCs and CH was confirmed by FTIR spectroscopy. The nanocomposites demonstrated a significant improvement in the mechanical performance and a considerable decrease in the hydrophilicity relative to the neat chitosan. The approach used in this work can be extended to other natural polymers.

Authors+Show Affiliations

Departamento de Química, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627 Pampulha, Belo Horizonte, MG, CEP 31270-901, Brazil.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24751032

Citation

de Mesquita, João P., et al. "Bio-based Nanocomposites Obtained Through Covalent Linkage Between Chitosan and Cellulose Nanocrystals." Carbohydrate Polymers, vol. 90, no. 1, 2012, pp. 210-7.
de Mesquita JP, Donnici CL, Teixeira IF, et al. Bio-based nanocomposites obtained through covalent linkage between chitosan and cellulose nanocrystals. Carbohydr Polym. 2012;90(1):210-7.
de Mesquita, J. P., Donnici, C. L., Teixeira, I. F., & Pereira, F. V. (2012). Bio-based nanocomposites obtained through covalent linkage between chitosan and cellulose nanocrystals. Carbohydrate Polymers, 90(1), 210-7. https://doi.org/10.1016/j.carbpol.2012.05.025
de Mesquita JP, et al. Bio-based Nanocomposites Obtained Through Covalent Linkage Between Chitosan and Cellulose Nanocrystals. Carbohydr Polym. 2012 Sep 1;90(1):210-7. PubMed PMID: 24751032.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Bio-based nanocomposites obtained through covalent linkage between chitosan and cellulose nanocrystals. AU - de Mesquita,João P, AU - Donnici,Claudio L, AU - Teixeira,Ivo F, AU - Pereira,Fabiano V, Y1 - 2012/05/12/ PY - 2012/01/31/received PY - 2012/05/03/revised PY - 2012/05/05/accepted PY - 2014/4/23/entrez PY - 2012/9/1/pubmed PY - 2015/10/17/medline SP - 210 EP - 7 JF - Carbohydrate polymers JO - Carbohydr Polym VL - 90 IS - 1 N2 - Bio-based nanocomposites were obtained through covalent linkage between cellulose nanocrystals (CNCs) and the natural polymer chitosan (CH). The CNCs were first functionalized with methyl adipoyl chloride (MAC) and the reactive end groups on the surface of the CNCs were reacted with the amino groups of the CH biopolymer in an aqueous medium. The functionalized CNCs and the resulting nanocomposites were characterized using FTIR, TEM, XRD, and elemental analyses. Characterization of the functionalized CNCs showed that up to 8% of the hydroxyl groups in the nanocrystals were substituted by the MAC residue. The covalent linkage between the CNCs and CH was confirmed by FTIR spectroscopy. The nanocomposites demonstrated a significant improvement in the mechanical performance and a considerable decrease in the hydrophilicity relative to the neat chitosan. The approach used in this work can be extended to other natural polymers. SN - 1879-1344 UR - https://www.unboundmedicine.com/medline/citation/24751032/Bio_based_nanocomposites_obtained_through_covalent_linkage_between_chitosan_and_cellulose_nanocrystals_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0144-8617(12)00446-8 DB - PRIME DP - Unbound Medicine ER -