scholarly journals Effect of banana peel waste concentration and mixing rate to the tensile strength of polyvinyl alcohol/banana peel waste composite film: optimization study via statistical tool

2021 ◽  
Vol 765 (1) ◽  
pp. 012031
Author(s):  
Q H Ng ◽  
V Kalaiarasi ◽  
Y P Teoh ◽  
Z X Ooi ◽  
S H Shuit ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Polyvinyl Alcohol ◽  
Composite Film ◽  
Banana Peel ◽  
Mixing Rate ◽  
Statistical Tool ◽  
Optimization Study

Reduction versus cross-linking: how to improve the tensile strength of graphene oxide/polyvinyl alcohol composite film

2017 ◽  
Vol 4 (8) ◽  
pp. 085601 ◽  
Author(s):  
Cheng-an Tao ◽  
Hao Zhang ◽  
Jian Huang ◽  
Xiaorong Zou ◽  
Hui Zhu ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Graphene Oxide ◽  
Polyvinyl Alcohol ◽  
Composite Film ◽  
Cross Linking

Mechanical Properties of Graphene Oxide/Polyvinyl Alcohol Composite Film

2017 ◽  
Vol 25 (1) ◽  
pp. 11-16 ◽  
Author(s):  
Tao Cheng-an ◽  
Zhang Hao ◽  
Wang Fang ◽  
Zhu Hui ◽  
Zou Xiaorong ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Graphene Oxide ◽  
Hydrogen Bonds ◽  
Polyvinyl Alcohol ◽  
Composite Film ◽  
Functional Groups ◽  
Failure Strain ◽  
Oh Groups ◽  
Enhancement Mechanism

Graphene oxide (GO) was served as mechanical strengthening to prepare GO/Polyvinyl Alcohol(PVA) composite film. This was accomplished in order to explore the influence of contents of GO on the tensile strength and failure strain of GO/PVA composite film. The results showed that as the GO content increased, the tensile strength of the composite film became greater rapidly at first, and then decreased gradually. When the GO content was 20%, the film had its maximum tensile strength (59.6 MPa). This is over 500% of the tensile strength of pure PVA film. The failure strain of GO/PVA composite film decreased rapidly as the GO content increased. The enhancement mechanism of the composite can be explained by the existence of multi-hydrogen bonds between the hydroxyl (-OH) groups of PVA and oxygen-containing functional groups of GO.

scholarly journals Effect of Potassium Sorbate and Ultrasonic Treatment on the Properties of Fish Scale Collagen/Polyvinyl Alcohol Composite Film

Molecules ◽  
2019 ◽  
Vol 24 (13) ◽  
pp. 2363 ◽  
Author(s):  
Xue Liang ◽  
Shiyi Feng ◽  
Saeed Ahmed ◽  
Wen Qin ◽  
Yaowen Liu
Keyword(s):  
Tensile Strength ◽  
Polyvinyl Alcohol ◽  
Composite Film ◽  
Ultrasonic Treatment ◽  
Food Packaging ◽  
Composite Films ◽  
Antibacterial Properties ◽  
Light Transmittance ◽  
Potassium Sorbate ◽  
Fish Scale

Composite films containing different amounts of potassium sorbate (KS) were prepared by using fish scale collagen (Col) and polyvinyl alcohol (PVA). Fourier transform infrared spectroscopy (FTIR), light transmittance, mechanical, water vapor transmission rate (WVTR), and the antibacterial properties of the composite films were analyzed. The results showed that the addition of Col significantly reduced the light transmittance of the composite film, but KS had no significant effect on the light transmission. The tensile strength decreased first and then increased with the addition of KS, while the WVTR increased first and then decreased. The composite film exhibited a certain degree of antibacterial properties against E. coli and S. aureus. In addition, we found that ultrasonic treatment reduced the WVTR, and also improved tensile strength and elongation at break of the composite films, but had no significant effect on other properties. The KS/Col/PVA films have the potential to be used as antimicrobial food packaging.

The Preparation and Property Research on Laponite-Poly (L-Lactide) Composite Film

2013 ◽  
Vol 750-752 ◽  
pp. 1919-1923 ◽  
Author(s):  
Guo Xian Zhou ◽  
Ming Wei Yuan ◽  
Lin Jiang ◽  
Ming Long Yuan ◽  
Hong Li Li
Keyword(s):  
Electron Microscopy ◽  
Thermal Stability ◽  
Tensile Strength ◽  
Composite Film ◽  
Composite Films ◽  
Complexing Agent ◽  
Solution Blending ◽  
Method Of Solution ◽  
Thermal Stability Of ◽  
Scanning Electron

The laponite-poly (L-lactide) composite films are prepared by the method of solution blending with polylactide (PLA) and laponite. The result shows that the homogeneous and smooth composite film is prepared with 1, 4-dioxane. Thermogravimetry analysis (TG) and tensile strength studies demonstrate that the thermal stability and tensile strength are improved with the laponite added. The scanning electron microscopy (SEM) measurement indicates that the pores of composite films get uniform and network structure is more and more compact with compared to pure PLA film. The present study reveals that the laponite as a complexing agent can improve the mechanical properties and thermal stability of PLA.

Influence of the Composition of Cement Mortars Modified by Lime or Polymers on the Mechanical Properties and Microstructure of Mortars

2013 ◽  
Vol 592-593 ◽  
pp. 647-650 ◽  
Author(s):  
Małgorzata Lenart
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Reinforced Concrete ◽  
Flexural Strength ◽  
Polyvinyl Alcohol ◽  
Polymer Composites ◽  
Adhesion Strength ◽  
Hardened Cement ◽  
Cement Mortars ◽  
Styrene Butadiene

Cement – polymer composites are nowadays widely used in repair systems not only in case of concrete or reinforced concrete constructions but also in masonry. Polymers addition for example already at 5% m.c. modifies the structure of the cement – polymer composite in a way that many of the mechanical properties such as flexural strength, tensile strength or adhesion to substrates are improved. The paper presents the results of tests such as flexural, compressive or adhesion strength to ceramic substrate of hardened cement mortars with different composition, as well as selected cement mortars modified by two polymers: polyvinyl alcohol and styrene – butadiene polymer dosed at 5 % m.c. Four types of cement mortars modified by lime (component used in historical constructions as well as in contemporary masonry mortars) are also examined for comparison.

Effect of Heat Setting Methods on Structures and Properties of High Strength Polyvinyl Alcohol Fibre

2015 ◽  
Vol 815 ◽  
pp. 643-648
Author(s):  
Yin Zhu ◽  
Jiong Xin Zhao
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Polyvinyl Alcohol ◽  
Setting Time ◽  
High Strength ◽  
Single Fibre ◽  
X Ray Diffraction ◽  
Heat Setting ◽  
Heat Treated ◽  
Setting Process

The effect of heat setting methods on the structures and mechanical properties of high strength polyvinyl alcohol (PVA) fibre is studied in this article. The microstructure and mechanical properties of heat treated PVA fibre is investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), and single fibre electronic tensile strength tester. Results show that the heat setting method with constant tension is a good heat setting method which can largely enhance the tensile strength of PVA fibre. During the heat setting process, the mechanical properties of PVA fibre are greatly affected by the temperature, tension and setting time. When the temperature is 220°C, tension is 5cN/dtex and setting time is 90sec, the tensile strength of PVA fibre increases from 12.0cN/dtex to 16.4cN/dtex in compare with the PVA fibre without heat setting

A Rapid Simulation and Optimization Study of Production Line

2013 ◽  
Vol 397-400 ◽  
pp. 12-15 ◽  
Author(s):  
Xiang Fei Ma ◽  
Di Liang ◽  
Yu Cheng Pan ◽  
Hua Dong Wang
Keyword(s):  
Production Line ◽  
Distribution Fitting ◽  
Statistical Tool ◽  
Optimal Program ◽  
Simulation And Optimization ◽  
Imbalance Problem ◽  
Optimization Study ◽  
Fitting In ◽  
Simulation And Evaluation ◽  
Body Production

Based on intermittent production line balance problem, Minitab statistical tool is used for data random distribution fitting in this paper and the car body production line model of one company is established and simulated under Flexsim environment, which benefits the line imbalance problem to be found quickly and accurately. Designing optimal program based on project management network analysis and making simulation and evaluation, the productivity is improved effectively and the time to balance and optimize production line is shortened greatly.

α-Cellulose-Based Films: Effect of Sodium Lignosulfonate (SLS) Incorporation on Physicochemical and Antibacterial Performance

2021 ◽  
Author(s):  
Xinyu Lu ◽  
Han Que ◽  
Haoquan Guo ◽  
Chenrong Ding ◽  
Xu Liu ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Tensile Strength ◽  
Hydrogen Bonds ◽  
Composite Film ◽  
Raw Materials ◽  
Mixed System ◽  
Cellulose Film ◽  
Sodium Lignosulfonate ◽  
Pure Cellulose ◽  
Antibacterial Performance

Abstract A homogeneous α-cellulose film was prepared by regeneration method from ZnCl2/CaCl2/cellulose mixed system and was further combined with sodium lignosulfonate (SLS) by crosslinking through interaction hydrogen bonds and “bridge linkages”. The physicochemical and antibacterial performance of films were all investigated and results showed that modified films exhibited stronger tensile strength, higher thermal stability, lower hydrophilic effect, better UV shielding as compared with those of pure cellulose film, and especially, better antibacterial ability derived from the presence of phenolic and sulfonate groups in SLS. This study proposed a simple and sustainable method for fabricating a multifunctional and environmentally friendly composite film by using two main lignocellulose resources as raw materials.

A novel Ag2O-TiO2-Bi2WO6/polyvinyl alcohol composite film with ethylene photocatalytic degradation performance towards banana preservation

2021 ◽  
pp. 131708
Author(s):  
Jiawen Xie ◽  
Rui Wang ◽  
Yingying Li ◽  
Zeping Ni ◽  
Wenbei Situ ◽  
...  
Keyword(s):  
Polyvinyl Alcohol ◽  
Composite Film ◽  
Photocatalytic Degradation

The effect of large area graphene oxide (LAGO) nanosheets on the mechanical properties of polyvinyl alcohol

2016 ◽  
Vol 36 (4) ◽  
pp. 399-405 ◽  
Author(s):  
Khalid Nawaz ◽  
Muhammad Ayub ◽  
Noaman Ul-Haq ◽  
M.B. Khan ◽  
Muhammad Bilal Khan Niazi ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Graphene Oxide ◽  
Polyvinyl Alcohol ◽  
Molecular Level ◽  
Large Area ◽  
Graphene Oxides ◽  
Elongation At Break ◽  
Graphene Oxide Sheets ◽  
Excellent Improvement

Abstract Large area graphene oxide sheets were synthesized, dispersed in water and used as nanofiller for mechanical improvement in terms of Young’s modulus and ultimate tensile strength (UTS) of polyvinyl alcohol (PVA) at low loading. The molecular level dispersion and interfacial interactions between the graphene oxides and polymeric matrix PVA were the real challenges. An excellent improvement in mechanical properties at 0.35 wt% loading was observed. Modulus improved from 1.58 GPa to 2.72 GPa (~71% improvement), UTS improved from 120 MPa to 197 MPa (~65% improvement), and in spite of these improvements, interestingly, there was no fall in elongation at break at this loading.

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