Bioinspired design and assembly of platelet reinforced polymer films with enhanced absorption properties

2014 ◽  
Vol 2 (15) ◽  
pp. 5516-5524 ◽  
Author(s):  
Yun-Zhao Wei ◽  
Guang-Sheng Wang ◽  
Yun Wu ◽  
Yong-Hai Yue ◽  
Jun-Tao Wu ◽  
...  
Keyword(s):  
Polymer Films ◽  
Nanocomposite Films ◽  
Absorption Properties ◽  
Enhanced Absorption ◽  
Bioinspired Design ◽  
Reinforced Polymer

The brick–mortar structure CuS/PVDF nanocomposite films with enhanced absorption properties were fabricated based on the selectively synthesized CuS hexagonal nanoplatelets and PVDF.

Bioinspired Design and Assembly of Platelet Reinforced Polymer Films

Science ◽  
2008 ◽  
Vol 319 (5866) ◽  
pp. 1069-1073 ◽  
Author(s):  
L. J. Bonderer ◽  
A. R. Studart ◽  
L. J. Gauckler
Keyword(s):  
Polymer Films ◽  
Bioinspired Design ◽  
Reinforced Polymer

A review investigating the influence of nanofiller addition on the mechanical, thermal and water absorption properties of cellulosic fibre reinforced polymer composite

2021 ◽  
pp. 152808372110575
Author(s):  
Adnan Amjad ◽  
Aslina Anjang Ab Rahman ◽  
Habib Awais ◽  
Mohd Shukur Zainol Abidin ◽  
Junaid Khan
Keyword(s):  
Surface Treatment ◽  
Water Absorption ◽  
Polymer Composites ◽  
Moisture Absorption ◽  
Low Cost ◽  
Natural Fibre ◽  
Great Promise ◽  
Absorption Properties ◽  
Reinforced Polymer ◽  
Fibre Reinforced Polymer

Composite holds great promise for future materials considering its advantages such as excellent strength, stiffness, lightweight, and cost-effectiveness. Due to rising environmental concerns, the research speed gradually changes from synthetic polymer composites to natural fibre reinforced polymer composites (NFRPCs). Natural fibres are believed a valuable and robust replacement to synthetic silicates and carbon-based fibres, along with biodegradability, recyclability, low cost, and eco-friendliness. But the incompatibility between natural fibre and polymer matrices and higher moisture absorption percentage of natural fibre limitise their applications. To overcome these flaws, surface treatment of natural fibre and nanofiller addition have become some of the most important aspects to improve the performance of NFRPCs. This review article provides the most recent development on the effect of different nanofiller addition and surface treatment on the mechanical, thermal, and wetting behaviour of NFRPCs. It concludes that the fibre surface treatment and nanofillers in natural fibre polymer composites positively affect mechanical, thermal and water absorption properties. A systematic understanding in this field covers advanced research basics to stimulate investigation for fabricating NFRPCs with excellent performance.

scholarly journals Direct Measurement of Temperature Diffusivity of Nanocellulose-Doped Biodegradable Composite Films

Micromachines ◽  
2020 ◽  
Vol 11 (8) ◽  
pp. 738 ◽  
Author(s):  
Hiroki Fujisawa ◽  
Meguya Ryu ◽  
Stefan Lundgaard ◽  
Denver P. Linklater ◽  
Elena P. Ivanova ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Direct Measurement ◽  
Cross Sections ◽  
Polymer Films ◽  
Composite Films ◽  
Polymer Nanocomposite ◽  
Optical Transmittance ◽  
Nanocomposite Films ◽  
Contact Method ◽  
Resistance Change

The thermal properties of novel nanomaterials play a significant role in determining the performance of the material in technological applications. Herein, direct measurement of the temperature diffusivity of nanocellulose-doped starch–polyurethane nanocomposite films was carried out by the micro-contact method. Polymer films containing up to 2 wt%. of nanocellulose were synthesised by a simple chemical process and are biodegradable. Films of a high optical transmittance T≈80% (for a 200 μm thick film), which were up to 44% crystalline, were characterised. Two different modalities of temperature diffusivity based on (1) a resistance change and (2) micro-thermocouple detected voltage modulation caused by the heat wave, were used for the polymer films with cross sections of ∼100 μm thickness. Twice different in-plane α‖ and out-of-plane α⊥ temperature diffusivities were directly determined with high fidelity: α‖=2.12×10−7 m2/s and α⊥=1.13×10−7 m2/s. This work provides an example of a direct contact measurement of thermal properties of nanocellulose composite biodegradable polymer films. The thermal diffusivity, which is usually high in strongly interconnected networks and crystals, was investigated for the first time in this polymer nanocomposite.

An optimistic approach “from hydrophobic to super hydrophilic nanofibers” for enhanced absorption properties

2020 ◽  
Vol 90 ◽  
pp. 106683 ◽  
Author(s):  
Motahira Hashmi ◽  
Sana Ullah ◽  
Azeem Ullah ◽  
Muhammad Qamar Khan ◽  
Nadir Hussain ◽  
...  
Keyword(s):  
Absorption Properties ◽  
Enhanced Absorption

Enhanced absorption properties of ordered mesoporous carbon/Co-doped ordered mesoporous carbon double-layer absorbers

2013 ◽  
Vol 22 (4) ◽  
pp. 044101 ◽  
Author(s):  
Shao-Li Guo ◽  
Liu-Ding Wang ◽  
Yi-Ming Wang ◽  
Hong-Jing Wu ◽  
Zhong-Yuan Shen
Keyword(s):  
Double Layer ◽  
Mesoporous Carbon ◽  
Ordered Mesoporous Carbon ◽  
Absorption Properties ◽  
Enhanced Absorption ◽  
Ordered Mesoporous ◽  
Co Doped

Preparation and Characterisation of Konjac Glucomannan (KGM)/SiO2 Nanoparticles Blend Film

2011 ◽  
Vol 194-196 ◽  
pp. 1431-1436
Author(s):  
Chao Wang ◽  
Bi Jun Xie ◽  
Bin Li
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Tensile Strength ◽  
Infrared Spectra ◽  
Nanocomposite Materials ◽  
Ultraviolet Absorption ◽  
Nanocomposite Films ◽  
Absorption Properties ◽  
Blend Film ◽  
Scanning Electron

A novel nanocomposite films was prepared by dispersing SiO2 nanoparticles in aqueous konjac glucomanan (KGM) solution. The structure and miscibility of the nanocomposite materials were determined finely by viscosimetry, Fourier transformed infrared spectra (FTIR), micropolariscope (POM), scanning electron microscopy (SEM) and ultraviolet-visible spectrophotometer (UV-Vis). The results indicated that there was a strong interaction between KGM and SiO2 in ethanolamine. The miscibility and ultraviolet-absorption properties of KGM/SiO2 nanoparticles blend film were improved by ball milling treatment. Moreover, the ultraviolet absorption and tensile strength of the nanocomposite films rapidly increase with the increase of SiO2, while breaking elongation of the nanocomposite films slightly decreased.

scholarly journals Spectral Studies on Impact of Alkali Perchlorate (Li/Na/K-ClO4) Salts on the Properties of PVA-Ag-Cr3+ Polymer Nanocomposite Films

2021 ◽  
Vol 2070 (1) ◽  
pp. 012077
Author(s):  
M Hemalatha ◽  
V Krishna Vinay ◽  
D Siva Raju ◽  
Ch Linga Raju
Keyword(s):  
Polymer Films ◽  
Polymer Nanocomposite ◽  
Intramolecular Hydrogen Bonding ◽  
Nanocomposite Films ◽  
Degree Of Crystallinity ◽  
Spectral Studies ◽  
Poly Vinyl Alcohol ◽  
X Ray Diffraction ◽  
Intramolecular Hydrogen ◽  
Metal Nanocomposites

Abstract Poly (Vinyl alcohol) metal (PVA-Ag-Cr) nanocomposites were prepared by a slow evaporation method with the help of a refluxing procedure. The effect of alkali perchlorate (Li/Na/K-QlO4) salts embedded in PVA-metal nanocomposites were analysed with SEM, XRD, EPR, and optical techniques. The surface structure and topology of the synthesized composites were studied using scanning electron microscopy. The crystallinity of the prepared polymer films has been determined using the X-ray diffraction pattern. Existing changes in some diffraction angle with the alkali salts results the fluctuations in the degree of crystallinity. EPR studies reveal the ‘g’ values at 1.96, 1.93, and 1.98 due to the oxidation exchange-coupled pair. The observed absorption spectra of Cr3+ ions corresponding to Li, Na & KClO4 salts in PVAAgSe polymer films revealed the band positions centered at 220, 275, 480, 535, and 1030 nm of all the alkali chlorates with small shifting in-band positions. This may be due to the inter/intramolecular hydrogen bonding.

Microwave Absorption Properties of Nano-Iron Epoxy Resin-Based Composite Material

2010 ◽  
Vol 434-435 ◽  
pp. 796-798
Author(s):  
Xiao Yang Gong ◽  
Jing Han You ◽  
Zhen Zhang ◽  
Lei Lei Yang
Keyword(s):  
Composite Material ◽  
Composite Materials ◽  
Microwave Absorption ◽  
Volume Fraction ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Iron Powders ◽  
Reinforced Polymer ◽  
Electromagnetic Pollution ◽  
Particulate Reinforced

A novel nano-iron particulate reinforced polymer-based composite material against electromagnetic pollution was prepared for household appliances. The attenuation, permittivity and various absorbing aspects of the composite materials were investigated. Results indicated that the composite materials exhibit promising effects of microwave absorption. The attenuation was affected by volume fraction of nano-iron powders. A single microwave absorption medium won’t be appreciable, and a combination of different microwave absorption materials is suggested.

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