Electroactive polymers

Biopolymers are polymers (large molecules, consisting of many repeated subunits) produced by living organisms also known as organic polymers. An example of this is starch, which by chance is one of the most commonly used raw materials in creating Polylactic acid. DNA and RNA are both examples of Biopolymers that have been constructed from nucleotides. Polylactic Acid Polylactic acid is a biodegradable thermoplastic deprived from renewable sources such as cornstarch and sugarcane There are several

Abstract Conductive polymers have promising applications in the field of tissue engineering as tissue scaffolds. Many tissue types respond favorably to electrical stimulation, because of this conductive polymers can be used for the regeneration of damaged tissue. This review will focus on the synthesis and fabrication of conductive polymers as well as their applications in tissue engineering. Introduction All cells exhibit some form of electrical excitability, from voltage gated ion channels

The 7th principle of green chemistry states “A raw material or feedstock should be renewable rather than depleting whenever technically and economically viable.”1 This means making use of easily available, cheap, and non-exhaustive resources like biomass consisting of plant or animal feedstock and/or carbon dioxide to make platform chemicals and commercially viable products instead of our conventional non-renewable resources like fossil fuels, natural gas, and oil. The rising fuel and energy demands

tension between these two polymers. This intricacy can be solved by the utilize of a compatibilizer to get better interfacial relation between two phases [1]. Accordingly, the objective of this research was to study cure characteristics, mechanical as well as swelling properties in the blends of NBR with HDPE was chose as blend constituents, because these NBR and HDPE are available in great amounts, possess outstanding properties and are paced among the most frequent polymers applied for the fabrication

Ke A (10,11) Explain the significance of the double-bond in the monomers used to produce polymers. The significance of double bonds is that it helps the polymers to form in a long-chain. But you first have to break the double bond and make tin to a single bonds and take the single bonds and bind the monomers together. By using that method we have created a long chain called a polymer. Explain some of the benefits of biodegradable plastics compared to traditional plastics like nylon.

As mentioned before, in tissue regeneration is of crucial importance the use of a 3D supportive structure because when cells are seeded into these scaffolds enables the proliferation of cells and chondrogenic differentiation; and with it the three-dimensional tissue formation. Scaffolds must be able to withstand physiological loading until sufficient tissue regeneration occurs. Moreover, the material must be sufficiently porous to allow for effective transport of nutrients. Finally, it should be

about polymers and their monomer units. Polymers are substances containing a large number of structural units joined by the same type of linkage. The small molecules that make up these polymer chains are called monomers. Polymers in the natural world have been around since the beginning of time and are found many places in nature. Starch, cellulose, and rubber all possess polymeric properties. Cellulose and starch are actually polymers of glucose which is a monosaccharide. Man-made polymers (also

specific properties, low density, easy processing, good mechanical properties, good chemical resistance, excellent thermal and electrical insulating properties and low cost ( in comparison to other materials) [1]. Polyesters are a class of synthetic polymers built up from multiple chemical repeating units linked together by ester (CO-O) groups. Polyesters display a wide array of properties and practical applications. Permanent-press fabrics, disposable soft-drink bottles, compact discs, rubber tires

key functional groups in the PBO structure, was observed during the 26 week elevated temperature/elevated moisture aging period. Substantial transmutations in chemical structure were observed via infrared spectroscopy, as well as transmutations in polymer morphology utilizing microscopy and neutron scattering. When the panels were abstracted to an ultra-dry environment for storage for 47 weeks, no further decreases in tensile vigor degradation were observed. In a follow-on study, fibers were sealed

Since the beginning Polymers have been with us; they form the very basis of life. Until the middle of the 20thcentury we were unaware but slowly and gradually we began to understand the true nature of polymers. This understanding came with the development of plastics, which are materials truly mady by man that are the ultimate tribute to man’s creativity and ingenuity. The use of polymeric materials has permeated in every facet of our lives. It is hard to visualize today’s world with all its