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Effect of post-treatments and concentration of cotton linter cellulose nanocrystals on the properties of agar-based nanocomposite films.
Carbohydr Polym. 2015 Dec 10; 134:20-9.CP

Abstract

Cellulose nanocrystals (CNCs) were prepared by acid hydrolysis of cotton linter pulp fibers and three different purification methods, i.e., without post purification (CNC1), dialyzed against distilled water (CNC2), and neutralized with NaOH (CNC3), and their effect on film properties was evaluated by preparation of agar/CNCs composite films. All the CNCs were rod in shape with diameter of 15-50 nm and length of 210-480 nm. FTIR result indicated that there was no distinctive differences in the chemical structure between CNCs and cotton linter cellulose fiber. No significant relationship was observed between the sulfate content and crystallinity index of CNCs. The CNC3 showed higher thermal stability than the other type of CNCs due to the less adverse effect on the thermal stability of sulfate groups induced by the neutralization with NaOH. The tensile strength (TS) of agar film increased by 15% with incorporation of 5 wt% of CNC3, on the contrary, it decreased by 10% and 15% with incorporation of CNC1 and CNC2, respectively. Other performance properties of agar/CNCs composite films such as optical and water vapor barrier properties showed that the CNC3 was more effective filler than the other CNCs. In the range of concentration of CNC3 tested (1-10 wt%), inclusion of 5 wt% of CNC3 was the maximum concentration for improving or maintaining film properties of the composite films. The neutralization of acid hydrolyzed cellulose using NaOH was simple and convenient for the preparation of CNC and bionanocomposite films.

Authors+Show Affiliations

Department of Food Engineering and Bionanocomposite Research Institute, Mokpo National University, 61 Dorimri, Chungkyemyon, Muangun, 534-729 Jeonnam, Republic of Korea; Food Packaging and Engineering Department, Food Technology Research Institute, Agriculture Research Center, Giza, Egypt.Department of Food Engineering and Bionanocomposite Research Institute, Mokpo National University, 61 Dorimri, Chungkyemyon, Muangun, 534-729 Jeonnam, Republic of Korea. Electronic address: jwrhim@mokpo.ac.kr.

Pub Type(s)

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

Language

eng

PubMed ID

26428095

Citation

Oun, Ahmed A., and Jong-Whan Rhim. "Effect of Post-treatments and Concentration of Cotton Linter Cellulose Nanocrystals On the Properties of Agar-based Nanocomposite Films." Carbohydrate Polymers, vol. 134, 2015, pp. 20-9.
Oun AA, Rhim JW. Effect of post-treatments and concentration of cotton linter cellulose nanocrystals on the properties of agar-based nanocomposite films. Carbohydr Polym. 2015;134:20-9.
Oun, A. A., & Rhim, J. W. (2015). Effect of post-treatments and concentration of cotton linter cellulose nanocrystals on the properties of agar-based nanocomposite films. Carbohydrate Polymers, 134, 20-9. https://doi.org/10.1016/j.carbpol.2015.07.053
Oun AA, Rhim JW. Effect of Post-treatments and Concentration of Cotton Linter Cellulose Nanocrystals On the Properties of Agar-based Nanocomposite Films. Carbohydr Polym. 2015 Dec 10;134:20-9. PubMed PMID: 26428095.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effect of post-treatments and concentration of cotton linter cellulose nanocrystals on the properties of agar-based nanocomposite films. AU - Oun,Ahmed A, AU - Rhim,Jong-Whan, Y1 - 2015/07/22/ PY - 2015/04/02/received PY - 2015/06/10/revised PY - 2015/07/15/accepted PY - 2015/10/3/entrez PY - 2015/10/3/pubmed PY - 2016/7/28/medline KW - Agar KW - Cellulose nanocrystals KW - Cotton linter KW - Effect of post-treatment KW - Nanocomposite films KW - Sulfate groups SP - 20 EP - 9 JF - Carbohydrate polymers JO - Carbohydr Polym VL - 134 N2 - Cellulose nanocrystals (CNCs) were prepared by acid hydrolysis of cotton linter pulp fibers and three different purification methods, i.e., without post purification (CNC1), dialyzed against distilled water (CNC2), and neutralized with NaOH (CNC3), and their effect on film properties was evaluated by preparation of agar/CNCs composite films. All the CNCs were rod in shape with diameter of 15-50 nm and length of 210-480 nm. FTIR result indicated that there was no distinctive differences in the chemical structure between CNCs and cotton linter cellulose fiber. No significant relationship was observed between the sulfate content and crystallinity index of CNCs. The CNC3 showed higher thermal stability than the other type of CNCs due to the less adverse effect on the thermal stability of sulfate groups induced by the neutralization with NaOH. The tensile strength (TS) of agar film increased by 15% with incorporation of 5 wt% of CNC3, on the contrary, it decreased by 10% and 15% with incorporation of CNC1 and CNC2, respectively. Other performance properties of agar/CNCs composite films such as optical and water vapor barrier properties showed that the CNC3 was more effective filler than the other CNCs. In the range of concentration of CNC3 tested (1-10 wt%), inclusion of 5 wt% of CNC3 was the maximum concentration for improving or maintaining film properties of the composite films. The neutralization of acid hydrolyzed cellulose using NaOH was simple and convenient for the preparation of CNC and bionanocomposite films. SN - 1879-1344 UR - https://www.unboundmedicine.com/medline/citation/26428095/Effect_of_post_treatments_and_concentration_of_cotton_linter_cellulose_nanocrystals_on_the_properties_of_agar_based_nanocomposite_films_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0144-8617(15)00682-7 DB - PRIME DP - Unbound Medicine ER -