Advantages And Disadvantages Of Bio Composites

In the specimens, all showed a brittle fracture due to how the stress vs strain slope looked and where the Ultimate Tensile Strength was located. Also, how the composited specimens failed look consistent that there were any defects in the specimens. The 0°/90° carbon/epoxy specimen failed in the longitudinal direction because of how the fibers were aligned in that direction. The two ±45° glass/ epoxy specimen failed in the 45-degree direction do to how the fibers were aligned in the specimens. These failures would make sense because composites fail when fiber become unconnected so the epoxy failed first and then cause the fibers to fail next. The fibers individual are weak but when are combined and form a pattern with other fibers is how the strength

For bio-composite, is a composite material formed by a “matrix” and “reinforcement” of natural fibers. These materials are often mimic the structure of the living materials involved in the process keeping the strengthening properties of

2. Tensile strength, elongation at break, Young's modulus, in-vitro and in-vivo destruction rate (linear mice), changes in physicomechanical characteristics, degree of crystallinity, molecular weight in the course of destruction, and Also the dynamics of the tissue reaction for samples of polymer products (films, veins, fibers) based on synthesized

Linear viscoelastic behaviour of the polymer composite with in the glass transition temperature can be addressed using cole-cole plot. Cole-cole plot is obtained by plotting loss modulus(E”) against

Composite materials have been evaluated with a matrix properties unsaturated polyester resin by conducting mechanical testing, including the pressure, compression, hardness and impact resistance.. While wood flour helped add to the balance between the original compression strength reductions up to 3 wt. wood flour and then reduce the strength. The results confirmed that the best promote and 3% by weight of wood flour consider the compression strength

Furthermore, flax fiber modulus is comparable to that of glass but has a lower density, this means that flax fibers actually have a higher specific stiffness than glass fibers. The excellent mechanical properties of flax, combined with the added functionalities they bring, make them a very attractive potential material for fiber reinforced composites. Their remarkable advantages compared with those conventional inorganic man-made fillers enhance their commercial and research

The objective of composite materials is to take advantage of the superior properties of both materials. Industry has identified the ability of composite material to produce high strength, high corrosive environment, and high durable as well as cost effective products.

One of the earliest uses of non-biological materials within the body was the wooden toe prosthetic in 1065-740BC in early Egypt. However, research within the field and therefore the 1st generation of biomaterials was recognized a lot of conspicuously in 1960 to 1970. Throughout this time period biomaterial research encompassed all materials designed to be used within the body. These materials

n aeroplane is acted upon by a few forces in the sky: Lift, Drag, Thrust and Weight. It counters the force of gravity by using either static lift or by using the dynamic lift of an airfoil. A composite material is a material made from two or more constituent materials with differing physical or chemical properties that when joined together, produce a material with characteristics different from the individual material. The individual component remains separate and unique from the finished structure. There are a few types of currently available composite materials, and they include carbon fibre, fiber glass and fibre-reinforced matrix systems. Almost all new aircraft these days include some composite material into their designs. The most common composite material that is used in aircraft is fiberglass. Other composite materials used includes Kevlar, which is now replacing glass fibers. Composite materials had been used commonly since

Thousands of people around the world suffer from injuries everyday which requires removal or reinforcements of the damaged tissues through surgical procedures. Tissue engineering, especially scaffolds have a major role to play in such situations. Scaffolds, a porous cross linked structure aims at the regeneration of the damaged tissue by supporting the cells mechanically while not altering the normal functioning of the cell and the individual as whole. Scaffolds are generally made of synthetic biocompatible polymers. But such scaffolds are generally expensive and may take longer time to decompose inside our body. So we looked for autologous biomaterials which have the desirable properties and can be used in place of the polymers. The autologous biomaterials will also be cheaper and decompose faster compared to the polymers. In this report, I have mentioned three such autologous biomaterials; albumin, collagen and B.mori silk fibroins, which are easily available and possesses the desired properties to manufacture scaffolds from them. I manufactured scaffolds by the process of electrospinning and tested the porosity and swelling of the scaffolds.

The most common advanced composites are polymer matrix composites consisting of a polymer reinforced by different types of fibers. Fiber reinforced polymer composites consist of strong and stiff fibers embedded in a matrix. Compared with traditional materials, they offer superior durability, light weight, and mechanical properties. Polymer composites are being increasingly used in various applications including aerospace, transportation, industrial and household applications. Like other materials, the selection and design of a polymer composite structure must take

Composition of fibres reinforced composite the fibres are important class of reinforcement, as they satisfy the desired conditions and transfer strength to the matrix constituent influencing and enhancing their properties as desire.

The XRD spectra of blends were compared to the control spectra of native keratin and alginate as mentioned in Figure 1. In XRD spectra, the native keratin and native alginate give a highest intensity at near 7543 and 4100 at about 19° and 14° angle of 2θ respectively, which is also confirmed by other researchers [16–18]. The spectra of keratin/alginate blends prepared at a ratio of 10:90, 30:70 and 50:50 gives a highest intensity peak 3573, 5128 and 3264 at 22°, 6.8° and 7.1° angle of 2θ respectively. The XRD spectra of all blend ratios gives a new peak in between 6°-8° angle of 2θ which is not present in the spectra of native keratin and alginate, this depict that the structure of native keratin and alginate become altered and form a new structural pattern in blend form. The XRD spectra of blend scaffold revealed that the intensity of blend has transformed as compared to the control XRD spectra which confirm that the compatibility exists in between keratin and alginate. Several works are reported for the biomaterial preparation from various blends such as chitosan/agar, agar/soy-protein, carboxy-methyl-cellulose/soy protein, soy protein/agar etc. [18], but in the author’s best knowledge none of the report available which can explain the compatibility in between keratin and alginate.

Composites are able to meet up diverse design requirements with considerable weight savings as well as elevated strength-to-weight ratio as compared to conventional materials. There are various types of composites such as Metal Matrix Composites (MMC), Particulate Composite (PC) and Fiber Reinforced Polymer composites (FRP). Among these composites, Carbon Fiber Reinforced Composites are widely

The physical and mechanical properties of the composites are determined by the fiber/matrix interface. By chemical treatments such as dewaxing, mercerization, bleaching, cyanoethylation, silane treatment, benzoylation, peroxide treatment, isocyanate treatment, acrylation, acetylation, latex coating, steam-explosion, etc. the interfacial properties can be improved [34,