Insight on the influence of nano zinc oxide on the thermal, dynamic mechanical, and flow characteristics of Poly(lactic acid)– zinc oxide composites

2019 ◽  
Vol 59 (6) ◽  
pp. 1242-1249 ◽  
Author(s):  
Jamileh Shojaeiarani ◽  
Dilpreet Bajwa ◽  
Long Jiang ◽  
Joshua Liaw ◽  
Kerry Hartman
Keyword(s):  
Zinc Oxide ◽  
Lactic Acid ◽  
Flow Characteristics ◽  
Poly Lactic Acid ◽  
Dynamic Mechanical ◽  
Nano Zinc Oxide ◽  
Nano Zinc ◽  
Oxide Composites

Study on the Properties of Polyphenylene Sulfide/Nano-Zinc Oxide Composites

2020 ◽  
Vol 1003 ◽  
pp. 185-190
Author(s):  
Neng Wan ◽  
Wei Hua Yao ◽  
Jui Chen Chen ◽  
Juan Du ◽  
Manuel Reyes De Guzman ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Zinc Oxide ◽  
Polyphenylene Sulfide ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
Comprehensive Properties ◽  
Nano Zinc Oxide ◽  
Nano Zinc ◽  
Internal Mixer ◽  
Oxide Composites

Different proportions of nano-zinc oxide were uniformly dispersed in a polyphenylene sulfide matrix by using an internal mixer. Comprehensive properties were determined through tensile strength test, differential scanning calorimetry, X-ray diffraction, thermogravimetry. The results showed that the sample elongation at break and tensile strength considerably increased with the amount of nano-zinc oxide. Its thermal stability has also improved considerably and crystallization temperature of PPS-NanoZnO composite was increased;while the crystalline phase remained unchanged.

Effect of Different Particle Size of Nano-Zinc Oxide on the Surface Binding Energy in Polyimide/Zinc Oxide Composites

2013 ◽  
Vol 785-786 ◽  
pp. 556-560 ◽  
Author(s):  
Jia Qi Lin ◽  
Hui Lin ◽  
Wen Long Yang ◽  
Xiao Kang Li ◽  
Ying Liu ◽  
...  
Keyword(s):  
Particle Size ◽  
Zinc Oxide ◽  
Binding Energy ◽  
Surface Binding ◽  
Nano Zno ◽  
Surface Binding Energy ◽  
Nano Zinc Oxide ◽  
Nano Zinc ◽  
Oxide Composites ◽  
The Relationship

The surface binding energy between the polyimide(PI) and zinc oxide (ZnO) have been simulated using the molecular dynamics theory.The PI / ZnO model has been established by using Forcite program package of Materials Studio software.The total atoms number about 300 million, the radius of the nano-ZnO cluster model have five groups are respectively 0.5 nm, 1 nm, 1.5 nm, 2 nm, 2.5 nm.The effect of different particle size of nano-ZnO on surface binding energy in PI / ZnO composites was investigated. The relationship between the surface binding energy of PI / ZnO composites and the nano-Zno radius, the maximum of surface binding energy were obtained. The computed results show that the intermolecular bonds between nano-ZnO and PI are mainly van der waals bonds.And the surface atomic number of nano-ZnO increases along with the increasing of nano-ZnO radius, indicating that the increasing of contact surface between the nano-ZnO and PI, which lead to the surface binding energy increases, the total energy lower and the system more stable.

scholarly journals Role of Hybrid Nano-Zinc Oxide and Cellulose Nanocrystals on the Mechanical, Thermal, and Flammability Properties of Poly (Lactic Acid) Polymer

2021 ◽  
Vol 5 (2) ◽  
pp. 43
Author(s):  
Dilpreet S. Bajwa ◽  
Jamileh Shojaeiarani ◽  
Joshua D. Liaw ◽  
Sreekala G. Bajwa
Keyword(s):  
Zinc Oxide ◽  
Lactic Acid ◽  
Zno Nanoparticles ◽  
Cellulose Nanocrystals ◽  
Thermal Characteristics ◽  
Extrusion Process ◽  
Shielding Effect ◽  
Poly Lactic Acid ◽  
Flame Resistance ◽  
Nano Zinc Oxide

Biopolymers with universal accessibility and inherent biodegradability can offer an appealing sustainable platform to supersede petroleum-based polymers. In this research, a hybrid system derived from cellulose nanocrystals (CNCs) and zinc oxide (ZnO) nanoparticles was added into poly (lactic acid) (PLA) to improve its mechanical, thermal, and flame resistance properties. The ZnO-overlaid CNCs were prepared via the solvent casting method and added to PLA through the melt-blending extrusion process. The composite properties were evaluated using SEM, a dynamic mechanical analyzer (DMA), FTIR TGA, and horizontal burning tests. The results demonstrated that the incorporation of 1.5% nano-CNC-overlaid ZnO nanoparticles into PLA enhanced the mechanical and thermal characteristics and the flame resistance of the PLA matrix. Oxidative combustion of CNC-ZnO promoted char formation and flame reduction. The shielding effect from the ZnO-CNC blend served as an insulator and resulted in noncontinuous burning, which increased the fire retardancy of nanocomposites. By contrast, the addition of ZnO into PLA accelerated the polymer degradation at higher temperature and shifted the maximum degradation to lower temperature in comparison with pure PLA. For PLA composites reinforced by ZnO, the storage modulus decreased with ZnO content possibly due to the scissoring effect of ZnO in the PLA matrix, which resulted in lower molecular weight.

Effect of Calcination on the Basic Strength of Surface Modified Nano-Zinc Oxide Characterised by FTIR and Back Titration Methods

2015 ◽  
Vol 1107 ◽  
pp. 326-332
Author(s):  
Abdul Rahim Yacob ◽  
Kamaluddeen Suleiman Kabo
Keyword(s):  
Zinc Oxide ◽  
Metal Oxides ◽  
Base Catalysis ◽  
Nano Zinc Oxide ◽  
Back Titration ◽  
And Performance ◽  
Nano Zinc ◽  
Surface Modified ◽  
Heterogeneous Base ◽  
Basic Strength

The use of metal oxides in heterogeneous base catalysis has gained a large interest due to their application in many chemical and industrial processes and is environmental friendly. Basic metal oxides are commonly used and their structures, morphology and performance can be modified by method of preparation and thermal activation. In this study, surface modified amphoteric zinc oxide was prepared via hydration-dehydration method and characterised by TGA and FTIR. The basic strength at various temperatures is characterised by FTIR and back titration analyses. The results shows that surface modified zinc oxide has the highest basic strength of 1.453mmolg-1at 400°C making it a relatively good and suitable compound for use in heterogeneous basic catalysis. This result is also supported by FTIR spectra which show possible relationship between the Lewis O2-and increasing basic strength.

Study on the Viscosity and Dispersion Stability of AA-AMPS Copolymer on Nano Zinc Oxide

2014 ◽  
Vol 692 ◽  
pp. 288-291
Author(s):  
Yue Long Liu ◽  
Jia Liu
Keyword(s):  
Zinc Oxide ◽  
Radical Polymerization ◽  
Polyacrylic Acid ◽  
Sulfonic Acid ◽  
Dispersion Stability ◽  
Polymerization Process ◽  
Mass Ratio ◽  
Nano Zinc Oxide ◽  
Nano Zinc

The copolymer of sodium polyacrylic acid and 2-acrylamide-2-methyl propane sulfonic acid (AMPS) was prepared by radical polymerization process, the effect of mass ratio of AA/AMPS on the viscosity of AA-AMPS copolymer were investigated. Results showed that when the mole ratio of AA/AMPS was 3:1, it had the least viscosity. The dispersion stability of synthesized AA-AMPS copolymer for nanozinc oxide was tested.

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