Electrical, morphology and structural properties of biodegradable nanocomposite polyvinyl-acetate/ cellulose nanocrystals

被引：20

作者：

Hammami, I. ^{[1
]}

Benhamou, K. ^{[2
]}

Hammami, H. ^{[1
]}

SoretoTeixeira, S. ^{[3
,4
]}

Arous, M. ^{[1
]}

Kaddami, H. ^{[2
]}

Graca, M. P. F. ^{[3
,4
]}

Costa, L. C. ^{[3
,4
]}

机构：

[1] Univ Sfax, Fac Sci Sfax, LaMaCoP, BP 3018, Sfax, Tunisia

[2] Cadi Ayyad Univ, Fac Sci & Technol, Lab Organometall & Macromol Chem Composites Mat, Marrakech 40000, Morocco

[3] Univ Aveiro, I3N, Aveiro, Portugal

[4] Univ Aveiro, Phys Dept, Aveiro, Portugal

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2020年 / 240卷

关键词：

Nanocomposites; Dielectric properties; Polyvinyl acetate; DIELECTRIC PERMITTIVITY; MOLECULAR-DYNAMICS; RELAXATION; REINFORCEMENT; DEGRADATION; VISCOSITY; WHISKERS;

D O I：

10.1016/j.matchemphys.2019.122182

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work, the dielectric properties and the electrical conductivity of polyvinyl acetate (PVAc) polymer doped with cellulose nanocrystals (CNC), extracted from the date palm rachis, are reported. We investigate the filler effect on the molecular mobility of the PVAc polymer chains and the charge transport properties of this material. PVAc/CNC films structure was characterized by powder X-Ray diffraction (XRD), showing the crystalline behavior of the cellulose filler. The dielectric properties were investigated using impedance spectroscopy, in the frequency range of 102-106 Hz and temperatures from 200 to 350 K. A beta relaxation, assigned to the motions of the -OCOCH3 side groups, and alpha relaxation, associated with the glass transition of the PVAc matrix, can be detected.

引用

页数：10

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