Highly Hydrophobic Thermally Stable Liquid Crystalline Cellulosic Nanomaterials

被引：36

作者：

Abraham, Eldho ^{[1
,2
]}

Nevo, Yuval ^{[1
,2
]}

Slattegard, Rikard ^{[3
]}

Attias, Noam ^{[1
,2
]}

Sharon, Sigal ^{[1
,2
]}

Lapidot, Shaul ^{[3
]}

Shoseyov, Oded ^{[1
,2
]}

机构：

[1] Hebrew Univ Jerusalem, RH Smith Inst Plant Sci & Genet, IL-76100 Rehovot, Israel

[2] Hebrew Univ Jerusalem, Harvey M Krueger Family Ctr Nanosci & Nanotechnol, IL-76100 Rehovot, Israel

[3] Hebrew Univ Jerusalem, Melodea Ltd, Fac Agr, IL-76100 Rehovot, Israel

来源：

ACS SUSTAINABLE CHEMISTRY & ENGINEERING | 2016年 / 4卷 / 03期

关键词：

CNC; Butyration; Hydrophobicity; Birefringence; Cellulose liquid crystals; X-RAY-DIFFRACTION; NANOCRYSTALLINE CELLULOSE; BACTERIAL CELLULOSE; FTIR SPECTROSCOPY; C-13; NANOCOMPOSITES; SUSPENSIONS; FIBERS; PHASE; ACETYLATION;

D O I：

10.1021/acssuschemeng.5b01363

中图分类号：

O6 [化学];

学科分类号：

070301 [无机化学];

摘要：

Highly hydrophobic cellulosic nanomaterials were prepared via iodine-catalyzed butyrate esterification of cellulose nanocrystals (CNC). The structure and properties of butyrated cellulose nanocrystals (Bu-CNC) were investigated via advanced spectroscopic, morphological, optical, thermal, contact angle, and coating analyses. Bu-CNC retained cellulose crystallinity, was hydrophobic with a static contact angle of 81.54 and displayed 18.5% enhancement in its thermal stability. Moreover, Bu-CNC possessed a solid multilamellar cellulose II structure and showed liquid crystalline behavior over a wide range of temperatures. Bu-CNC formed transparent flexible films upon drying and was easily dispersible in ethanol and acetone. As a thermally stable hydrophobic liquid crystalline biobased material, Bu-CNC presents a new class of nanomaterial, which potentially suits various industrial and medical applications.

引用

页码：1338 / 1346

页数：9

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