Moisture absorption, thermal and microstructural properties of polymer composites developed from rice husk and polystyrene wastes

2021 ◽  
pp. 1-10
Author(s):  
Joshua O. Ighalo ◽  
Adewale George Adeniyi ◽  
Oluwasemilogo O. Owolabi ◽  
Sulyman A. Abdulkareem
Keyword(s):  
Polymer Composites ◽  
Rice Husk ◽  
Moisture Absorption ◽  
Microstructural Properties

scholarly journals STRENGTH CHARACTERISTICS OF POLYMER COMPOSITES BASED ON RECYCLED POLYPROPYLENE FILLED WITH RICE HUSK DURING MOISTURE ABSORPTION AND NATURAL AGIN

2020 ◽  
Vol 17 (36) ◽  
pp. 845-855
Author(s):  
Aynur R SADRITDINOV ◽  
Valentina V CHERNOVA ◽  
Marina V BAZUNOVA ◽  
Elena M ZAKHAROVA ◽  
Vadim P ZAKHAROV
Keyword(s):  
Mechanical Properties ◽  
Environmental Factors ◽  
Polymer Composites ◽  
Rice Husk ◽  
Moisture Absorption ◽  
Natural Aging ◽  
Physical And Mechanical Properties ◽  
Strength Characteristics ◽  
Continuous Increase ◽  
Recycled Polypropylene

The relevance of the issue under investigation is conditioned by an increase of the ecological burden on the environment due to the continuous increase of plastic waste, a significant proportion of polypropylene. One solution to this problem is the involvement of recycled polypropylene to obtain plastic products based on composites filled with rice husk. It makes it possible to reduce the prime cost of finished products, regulate their physical and mechanical properties, and reduce the volume of difficult-to-decompose synthetic polymers that end up in waste. The key property of polypropylene, which changes during its filling with rice husk, is moisture absorption, which contributes to a change in the strength characteristics of the polymer composite and accelerates its aging under the influence of environmental factors. In this regard, this research aims to identify the patterns of the influence of absorbed moisture and natural aging on the physical and mechanical properties of polymer composites based on recycled polypropylene filled with rice husk. The leading approach to the study of this issue is laboratory tests on the saturation of polymer composites with water of different temperatures and duration of exposure and testing materials during long-term natural aging under the influence of environmental factors. The key factor characterizing the change in the physical and mechanical properties of materials, in this case, is the elasticity modulus, elongation, and tensile stress at the break during stretching of the prototypes. The materials of the paper are of practical value for the processing of secondary thermoplastic polymers, as well as the development of biodegradable polymer composites.

Studies of rice husk ash nanoparticles on the mechanical and microstructural properties of the concrete

2016 ◽  
Vol 3 (6) ◽  
pp. 1999-2007 ◽  
Author(s):  
Vinita Vishwakarma ◽  
D. Ramachandran ◽  
N. Anbarasan ◽  
Arul Maximus Rabel
Keyword(s):  
Rice Husk ◽  
Rice Husk Ash ◽  
Microstructural Properties ◽  
Mechanical And Microstructural Properties

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.

Novel Sustainable Composites with Geopolymeric Steel Slag and Recycled from Packing PET

2020 ◽  
Vol 1012 ◽  
pp. 26-31
Author(s):  
Eliziane Medeiros Santos ◽  
Alaelson Vieira Gomes ◽  
Flávio James Humberto Tommasini Vieira Ramos ◽  
Sergio Neves Monteiro
Keyword(s):  
Polymer Composites ◽  
Environmental Impacts ◽  
Moisture Absorption ◽  
Steel Slag ◽  
Future Studies ◽  
Steel Making ◽  
The World ◽  
The Matrix ◽  
Sustainable Product ◽  
Sustainable Materials

The search for sustainable materials has been increasingly growing due to the world environmental impacts faced. With the improper disposal of PET packaging and the waste generated by steel making, such as slag, a composite of these materials was created in search of a sustainable product. The composite has as its matrix the polymer and its particles are geopolymeric of the steel slag. The polymer composites were manufactured with concentrations of 0%, 20%, 40% and 60% of geopolymer. The characterizations showed that they are composites with low moisture absorption and that the affinity between the matrix and the reinforcement is impaired as the amount of charge increases. It was possible to realize that composites are good materials for future studies for possible future applications, such as ballistic vests. Composites are great precursors for achieving product sustainability due to the feasibility of reusing waste and disposing of it improperly in the environment.

scholarly journals Moisture Absorption in Polymer Composites Reinforced with Vegetable Fiber: A Three-Dimensional Investigation via Langmuir Model

Polymers ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 1847 ◽  
Author(s):  
Brito ◽  
Santos ◽  
Correia ◽  
Queiroz ◽  
Tavares ◽  
...  
Keyword(s):  
Moisture Content ◽  
Polymer Composites ◽  
Layer Thickness ◽  
Moisture Absorption ◽  
Three Dimensional ◽  
Water Concentration ◽  
Langmuir Model ◽  
Sisal Fiber ◽  
Average Moisture Content ◽  
Material Surface

This work aims to study numerically the moisture absorption in polymer composite reinforced with vegetable fibers using the Langmuir model which considers the existence of free and entrapped water molecules inside the material. A three-dimensional and transient modeling for describing the water absorption process inside the composite and its numerical solution via finite volume method were presented and discussed. Application has been made for polymer composites reinforced with sisal fiber. Emphasis was given to the effect of the layer thickness of fluid close to the wall of the composite in the progress of water migration. Results of the free and entrapped solute (water) concentration, local moisture content and average moisture content, at different times of process, and inside the composite were presented and analyzed. It was verified that concentration gradients of the molecules (free and entrapped) are higher in the material surface, at any time of the process, and concentration of free solute is greater than the concentration of entrapped solute. It was verified that the water layer thickness surrounding the composite strongly affects the moisture absorption rate.

Free volume-related microstructural properties of lithium perchlorate/sodium alginate polymer composites

2013 ◽  
Vol 35 (7) ◽  
pp. 1267-1274 ◽  
Author(s):  
S.D. Praveena ◽  
V. Ravindrachary ◽  
R.F. Bhajantri ◽  
Ismayil
Keyword(s):  
Polymer Composites ◽  
Sodium Alginate ◽  
Free Volume ◽  
Lithium Perchlorate ◽  
Microstructural Properties

Characterisation of Moisture Absorption Effects on the Strength of Composite Materials

2015 ◽  
Vol 1125 ◽  
pp. 69-73 ◽  
Author(s):  
King Jye Wong ◽  
Haris Ahmad Israr ◽  
Mohd Nasir Tamin
Keyword(s):  
Composite Materials ◽  
Polymer Composites ◽  
Exponential Decay ◽  
Moisture Absorption ◽  
Scattered Data ◽  
Dominant Factor ◽  
Residual Property ◽  
Proposed Model ◽  
Property Model ◽  
Temperature Factors

In the present work, the variation of the tensile strengths of various polymers and polymer composites due to moisture ageing is investigated. The stacking sequences of the composites include 0o, 90o, ±45o and quasi-isotropic laminates. The variation in the strength of material is then fitted using a residual property model. Results show that the proposed model characterises well the variation in the strengths that exhibits a typical trend, where there is no obvious scattered data. In fibre dominated laminates (0o), the degradation parameter seems to be influenced by the type of material, whereas for matrix dominated laminates (90o), ageing temperature appears to be the dominant factor that affects the degradation trend. As for [±45]2S and adhesives, exponential decay trend is observed. This model could be further improved to include the material and temperature factors.

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