Characterization of Cellulose Nanocrystals Grafted with Organic Acid Chloride of Different Sizes

被引：7

作者：

de Menezes, Aparecido Junior ^{[1
,3
]}

Longo, Elson ^{[2
]}

Leite, Fabio Lima ^{[1
]}

Dufresne, Alain ^{[3
]}

机构：

[1] Univ Fed Sao Carlos, Dept Phys Chem & Math DFQM, BR-18052780 Sorocaba, Brazil

[2] Sao Paulo State Univ, Inst Chem IQ, Araraquara, Brazil

[3] LGP2 Grenoble INP PAGORA, Lab Pulp & Paper Engn LGP2, F-38402 St Martin Dheres, France

来源：

JOURNAL OF RENEWABLE MATERIALS | 2014年 / 2卷 / 04期

基金：

巴西圣保罗研究基金会;

关键词：

Cellulose nanocrystals; surface chemical modification; AFM; MECHANICAL-PROPERTIES; STARCH NANOCRYSTALS; ELASTIC-MODULUS; WHISKERS; NANOCOMPOSITES; SOLVENTS; BEHAVIOR; SUSPENSIONS; FIBER;

D O I：

10.7569/JRM.2014.634121

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In the work presented in this article surface chemical modification was applied to ramie cellulose nanocrystals by grafting organic acid chlorides presenting different lengths of the aliphatic chain. The objective of this surface chemical treatment was to enhance the nonpolar nature of the grafted nanocrystals and improve their dispersibility in a nonpolar polymeric matrix. The occurrence of the chemical modification was evaluated by Fourier transform infrared (FTIR) spectroscopy, the degree of crystallinity by X-ray diffraction, and the morphology by scanning electron microscopy with field emission gun (FEG-SEM) and atomic force microscopy (AFM). The morphology and crystallinity provided by different experimental methods were carefully compared.

引用

页码：306 / 313

页数：8

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