Evaluating of mechanical properties of (silicone/arabic gum/fish hask) composites used as pressure garment prosthetics

This work is focused on the upper part of the prosthesis which is called a socket, it is in contact connect with the amputated part. The shear force between skin and socket, local pressure, sweating, and bacteria generation, all lead to skin inflammation and a bad smell. Consequently, the prosthesis became uncomfortable for a patient. To address this issue silicone rubber liners is proposed to use because it can absorb moisture, stress distribution, and anti-bacterial. The curing time and temperature are important factors for determining crosslink density, from the results obtained, can be noticed that, the cross-link density can greatly affect the silicone rubber properties, it can have a direct effect on the tensile strength, modulus of elasticity, percentage of elongation as well as the water absorption, and the cure time (15 min.) shoes the best resalt. As a result, using it making the prosthesis more comfortable and acceptable to the patient. In this paper, the effect of cure time on physical properties was studied.

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Preparation and characterization of silicone rubber socket liners modified by nanoparticles additives

Ameer

2023

Archives of Materials Science and Engineering

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The upper part of the prosthesis is called a socket, which contacts the amputated part. While wearing the prosthesis, there are several problems that the patient may suffer from, such as shear force between the socket and amputated part, pressure on the bony prominences, sweating, and bacteria generation, all leading to skin problems and a bad smell. It makes the patient refuse to wear the prosthesis because it is uncomfortable. Therefore, the aim of this study was comfortable lining from silicone rubber which cross-links at room temperature, with properties corresponding to the needs of this application, such as stress distribution, moisture absorption, and antibacterial.In the current work, silicone rubber was selected with the addition of nano-fillers (ZnO, Mg(OH)2, and Chitosan). Mechanical and physical properties were studied (tensile strength, tear strength, hardness, water absorption, porosity, and antibacterial).Chitosan showed the highest effect on the mechanical properties of silicon, as it achieved the highest value of tensile strength of 2.2 MPa elongation of 572%, tear strength 13.9 kN/m, and shore A hardness of 33.3. While the highest value of the modulus, 0.636 MPa was achieved by adding ZnO. The results also showed an increase in the water absorption and the porosity, which were the highest values at 1.6 % and 0.24%, respectively with the addition of Mg(OH)2. The samples showed a clear resistance to preventing the microorganisms growth.Manufactured linings require additional improvement in mechanical properties by mixing more than one type of additives mentioned in the research. Thus, physical and biological properties can be obtained simultaneously with mechanical properties.The above results qualify the silicone rubber composites for use as a socket liner due to their flexibility and ability to absorb water in addition to their resistance and prevent the growth of fungi and bacteria.The method of preparation and properties of the lining material and additives qualify it for such applications as physical and biological properties.

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Evaluating of mechanical properties of (silicone/arabic gum/fish hask) composites used as pressure garment prosthetics

Cited by 3 publications

References 7 publications

Investigation of novel natural polymer composition with acacia for the production of disposable plastic like material

Investigation of novel natural polymer composition with acacia for the production of disposable plastic like material

Effect of the cure time on the Mechanical Properties of Silicone Rubber used as Socket Liners

Preparation and characterization of silicone rubber socket liners modified by nanoparticles additives

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