Porous Water Absorbing Mass of Fibers
We will look at the effect of water absorption on the mechanical properties of GCF/AFF/PF hybrid composites. Finally, we will discuss how pore size and density affect the mechanical properties of EF-Sponge.
Choosing the suitable polymer for a porous water-absorbing mass of fibers
There are a few things to consider when choosing the material to be used in a porous water-absorbing mass of fibers. First, consider the pore size of the material. The pore size of a material defines how large or small the voids are. Pore size also affects wicking and filtration efficiency. Porous fiber components are produced using multiple fiber formation processes and different bonding technologies.
A suitable polymer for porous water soaking mass of fibers can absorb three to four times its volume in deionized or distilled water. When mixed with water, this material becomes a 99.9% liquid and absorbs water 50 times its weight. It can even absorb 50 times its weight in 0.9% saline solution.
Effect of water absorption on mechanical properties of GCF/AFF/PF hybrid composites
The effects of a porous water absorption mass on the mechanical properties of GCF/AFF/PP/PF hybrid composites are well-known. This study investigated the influence of porous water absorption mass on the mechanical properties of these composites. The study revealed that voids in the matrix negatively affected the composites’ service performance. The presence of voids depends on several manufacturing parameters, including the curing temperature, molding pressure, and resin viscosity. It is important to note that voids in a composite matrix may be indifferent volume fractions, shapes, and sizes. Therefore, the study aimed to determine the impact of voids content on mechanical performances.
The thickness of a hybrid composite specimen affects the absorption of water. A decrease in the silicon crystallite size reduces the absorption mass. As a result, the resulting tensile stress is decreased. The average value of the stress components in Figure 6c shows a similar trend. A slight fluctuation occurs during the initial process. However, after several days, the composites significantly increase the mechanical properties.
We evaluated the impact strength of GCF/AFF/PF hybrid materials by using different fiber concentrations and a hand lay-up technique. We found that water absorption was more pronounced when a porous material has a higher percentage of fiber than when it is dry. The proportion of porous water absorption increases with fiber weight, following a non-Ficken’s law. In our study, the maximum fiber reinforcement in a hybrid composite was 35 wt.%. This fiber content increased the composite’s strength, demonstrating a better bond between the matrix and the fiber.
We studied the effects of water absorption mass and fiber content on the mechanical properties of GCF/AFF/PTF/PF hybrid composites by varying fiber content and the fiber volume fraction. Higher fiber content led to decreased fiber wetting and lower flexural strength. This is attributed to fiber swelling as water molecules penetrate into the interfacial region. Subsequently, the fiber was de-bonded from the matrix, leading to a low flexural strength value.
The percentage of water absorption in the hybrid composites increased linearly with the immersion time. After 10 days, water penetration reached saturation levels in both composites. The lowest water absorption rate was observed in a 25 wt.% composite, while the highest water absorption rate was observed in a 45 wt.% hybrid composite. This difference in water absorption rate is mainly due to the weight proportion of fibres in the composite specimens.
This study found that a polymer reinforced with palm leaf fiber exhibited better mechanical and water resistance. In addition, the composite with palm leaf fiber (J75) is significantly stronger than those reinforced with 100% jute fiber. For example, its tensile strength is 60% higher than that of banana/sisal/PP and banana/jute/epoxy, and it has a 23.1% greater flexural strength than banana/jute/PP.
Effect of pore size and density on mechanical properties of EF-Sponge
This study examined the effect of pore size and density on mechanical properties by synthesizing sponge scaffolds in tert-butanol without any chemical crosslinking agent. The scaffolds exhibited good water absorption, shape-memory function, and morphological versatility.
Moreover, these sponges are highly versatile, as they can be produced in specific shapes and sizes. To determine the effect of pore size and density on the mechanical properties of the EF-sponge, we synthesized and assembled sponges of different fiber densities. Besides, we analyzed their morphology by SEM.
EF-Sponge scaffolds showed a high resemblance to natural ECM and fibrous structures. The heat treatment of gelatin reduced the free acid content and basic residues and generated amide and interchain crosslinks.
In addition to its improved mechanical properties, EF-Sponge also can promote neovascularization. This process provides nutrients to granulation tissue and speeds up wound healing. Furthermore, the fibrous sponge has improved adhesion to chronic wounds in diabetic rats. As a result, it promotes collagen remodeling and prevents scar formation.
DIC tests were performed on the resulting samples to analyze the effect of pore size and density on mechanical properties. First, both foam samples were processed with 17% vol. Space holder, and the other with 52% vol. Space holder.
The CU336 space holder produced the foams with the lowest yield strength. In contrast, SP380 and SP607 space holders produced higher yield strengths. These results demonstrate that particle size distribution can influence yield strength.
Furthermore, this study reveals a relationship between pore size and density, and mechanical properties. So, it’s essential to consider the physical properties of pore-size distribution when choosing the space holder.
The effects of pore size and density on mechanical properties can be determined by the morphology of a sponge and the density of its fibers. The higher the density of pore-sized fibers, the better the water absorption. As a result, a scaffold with 1%, 2%, or 4% density showed optimal expansion properties. In addition, a thin layer of EF-Sponge is suitable for tissue engineering.
We have examined the influence of pore size and density on the mechanical properties of the EF-Sponge in a range of experiments. To increase the density of pore size, CTAB was used. The temperature was increased by 10 degree Celsius. The addition of H2O2 increased the pore size.
