scholarly journals Effects of cellulose nanofiber on the thermal, mechanical, and optical properties of triacetate cellulose nanocomposites

2020 ◽  
Vol 14 (5) ◽  
pp. 467-476 ◽  
Author(s):  
C. M. Wu ◽  
K. S. Danh ◽  
A. N. Nakagaito
Keyword(s):  
Optical Properties ◽  
Cellulose Nanofiber ◽  
Cellulose Nanocomposites

Preparation and Optical Properties of ZnO-Cellulose Nanocomposites

2013 ◽  
Vol 5 (2) ◽  
pp. 309-313 ◽  
Author(s):  
Bin Shen ◽  
Na Chen ◽  
Mingliang Wang ◽  
Chunxiang Xu ◽  
Yan Wang
Keyword(s):  
Optical Properties ◽  
Cellulose Nanocomposites

Cellulose nanocrystal-coated TEMPO-oxidized cellulose nanofiber films for high performance all-cellulose nanocomposites

2020 ◽  
Vol 398 ◽  
pp. 123100 ◽  
Author(s):  
Goomin Kwon ◽  
Kangyun Lee ◽  
Dabum Kim ◽  
Youngho Jeon ◽  
Ung-Jin Kim ◽  
...  
Keyword(s):  
High Performance ◽  
Cellulose Nanofiber ◽  
Cellulose Nanocrystal ◽  
Oxidized Cellulose ◽  
Cellulose Nanocomposites

Well-aligned cellulose nanofiber-reinforced polyvinyl alcohol composite film: Mechanical and optical properties

2016 ◽  
Vol 140 ◽  
pp. 238-245 ◽  
Author(s):  
Jie Cai ◽  
Jingyao Chen ◽  
Qian Zhang ◽  
Miao Lei ◽  
Jingren He ◽  
...  
Keyword(s):  
Optical Properties ◽  
Polyvinyl Alcohol ◽  
Composite Film ◽  
Cellulose Nanofiber

scholarly journals Ice-Templated Cellulose Nanofiber Filaments as a Reinforcement Material in Epoxy Composites

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 490
Author(s):  
Tuukka Nissilä ◽  
Jiayuan Wei ◽  
Shiyu Geng ◽  
Anita Teleman ◽  
Kristiina Oksman
Keyword(s):  
Photoelectron Spectroscopy ◽  
Cellulose Nanofibers ◽  
Chemical Vapor ◽  
Cellulose Nanofiber ◽  
X Ray ◽  
The Matrix ◽  
Wide Availability ◽  
Spectroscopy Studies ◽  
Diffuse Reflectance Infrared ◽  
Cellulose Nanocomposites

Finding renewable alternatives to the commonly used reinforcement materials in composites is attracting a significant amount of research interest. Nanocellulose is a promising candidate owing to its wide availability and favorable properties such as high Young’s modulus. This study addressed the major problems inherent to cellulose nanocomposites, namely, controlling the fiber structure and obtaining a sufficient interfacial adhesion between nanocellulose and a non-hydrophilic matrix. Unidirectionally aligned cellulose nanofiber filament mats were obtained via ice-templating, and chemical vapor deposition was used to cover the filament surfaces with an aminosilane before impregnating the mats with a bio-epoxy resin. The process resulted in cellulose nanocomposites with an oriented structure and a strong fiber–matrix interface. Diffuse reflectance infrared Fourier transform and X-ray photoelectron spectroscopy studies revealed the presence of silane on the filaments. The improved interface, resulting from the surface treatment, was observable in electron microscopy images and was further confirmed by the significant increase in the tan delta peak temperature. The storage modulus of the matrix could be improved up to 2.5-fold with 18 wt% filament content and was significantly higher in the filament direction. Wide-angle X-ray scattering was used to study the orientation of cellulose nanofibers in the filament mats and the composites, and the corresponding orientation indices were 0.6 and 0.53, respectively, indicating a significant level of alignment.

Gas barrier and optical properties of cellulose nanofiber coatings with dispersed TiO 2 nanoparticles

2018 ◽  
Vol 343 ◽  
pp. 131-137 ◽  
Author(s):  
David Roilo ◽  
Cecilia Ada Maestri ◽  
Marina Scarpa ◽  
Paolo Bettotti ◽  
Riccardo Checchetto
Keyword(s):  
Optical Properties ◽  
Cellulose Nanofiber ◽  
Gas Barrier

Design of objective lens for 200-kV high-resolution electron microscopes

1983 ◽  
Vol 41 ◽  
pp. 314-315
Author(s):  
K. Tsuno ◽  
T. Honda ◽  
Y. Harada ◽  
M. Naruse
Keyword(s):  
Optical Properties ◽  
Computer Technology ◽  
Axial Magnetic Field ◽  
Chromatic Aberration ◽  
Objective Lens ◽  
Resolution Electron ◽  
Correction Of Astigmatism ◽  
Three Stages ◽  
Electron Microscopes ◽  
Stage 1

Developement of computer technology provides much improvements on electron microscopy, such as simulation of images, reconstruction of images and automatic controll of microscopes (auto-focussing and auto-correction of astigmatism) and design of electron microscope lenses by using a finite element method (FEM). In this investigation, procedures for simulating the optical properties of objective lenses of HREM and the characteristics of the new lens for HREM at 200 kV are described.The process for designing the objective lens is divided into three stages. Stage 1 is the process for estimating the optical properties of the lens. Firstly, calculation by FEM is made for simulating the axial magnetic field distributions Bzc of the lens. Secondly, electron ray trajectory is numerically calculated by using Bzc. And lastly, using Bzc and ray trajectory, spherical and chromatic aberration coefficients Cs and Cc are numerically calculated. Above calculations are repeated by changing the shape of lens until! to find an optimum aberration coefficients.

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