TY - JOUR
T1 - Highly Hydrophobic Thermally Stable Liquid Crystalline Cellulosic Nanomaterials
AU - Abraham, Eldho
AU - Nevo, Yuval
AU - Slattegard, Rikard
AU - Attias, Noam
AU - Sharon, Sigal
AU - Lapidot, Shaul
AU - Shoseyov, Oded
N1 - Publisher Copyright:
© 2016 American Chemical Society.
PY - 2016/3/7
Y1 - 2016/3/7
N2 - 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.
AB - 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.
KW - Birefringence
KW - Butyration
KW - CNC
KW - Cellulose liquid crystals
KW - Hydrophobicity
UR - http://www.scopus.com/inward/record.url?scp=84960145045&partnerID=8YFLogxK
U2 - 10.1021/acssuschemeng.5b01363
DO - 10.1021/acssuschemeng.5b01363
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AN - SCOPUS:84960145045
SN - 2168-0485
VL - 4
SP - 1338
EP - 1346
JO - ACS Sustainable Chemistry and Engineering
JF - ACS Sustainable Chemistry and Engineering
IS - 3
ER -