Dielectric response of hydrated water as a structural component of nanofibrillated cellulose (NFC) from different plant sources

被引：11

作者：

Lunev, Ivan ^{[1
,2
]}

Greenbaum , Anna ^{[3
,4
]}

Feldman, Yuri ^{[3
]}

Petrov, Vladimir ^{[5
]}

Kuznetsova, Nina ^{[5
]}

Averianova, Natalia ^{[5
]}

Makshakova, Olga ^{[1
]}

Zuev, Yuriy ^{[1
,2
]}

机构：

[1] RAS, FRC Kazan Sci Ctr, Kazan Inst Biochem & Biophys, Lobachevsky Str 2-31, Kazan 420111, Russia

[2] Kazan Fed Univ, Kremlyovskaya Str 18, Kazan 420008, Russia

[3] Hebrew Univ Jerusalem, Dept Appl Phys, Edmond J Safra Campus, IL-9190401 Jerusalem, Israel

[4] Hebrew Univ Jerusalem, Racah Inst Phys, Edmond J Safra Campus, IL-9190401 Jerusalem, Israel

[5] Kazan Natl Res Technol Univ, Karl Marx Str 68, Kazan 420015, Russia

来源：

CARBOHYDRATE POLYMERS | 2019年 / 225卷

关键词：

Nanofibrillated cellulose; Films; Hydrated water; Dielectric spectroscopy; CONFINED WATER; MICROFIBRILLATED CELLULOSE; RELAXATION; SPECTROSCOPY; DYNAMICS; NANOCELLULOSE; NANOCRYSTALS; TEMPERATURE; NUCLEATION; DISPERSION;

D O I：

10.1016/j.carbpol.2019.115217

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The current work illuminates the interplay between nanofibrillated cellulose (NFC) films and hydrated water. The NFC films from three sources of technological importance, i.e. cotton, wood and flax, are compared. It is shown that cellulose materials present slight variations in supramolecular structure depending on the plant origin. The structural differences determine both quantity and state of the water adsorbed by cellulose. Dielectric spectroscopy was employed to study the state of hydrated water as a probe of both the overall and specific marks of NFCs' structure. The measurements, carried out in the wide frequency (10(-2)Hz -10(6)Hz) and temperature (123 K-293 K) ranges, revealed the formation of non-interactive water clusters at low water content. At high water content, additional states of water were identified: Water in saturated glass-forming solution and bulk. These water states were shown to be determined by the NFC's structure and morphology.

引用

页数：9

共 72 条

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