Biodegradable Polymers.

Biodegradable Polymers;

Biodegradable polymers are the polymers which are degraded by micro-organisms within a suitable period. Thus biodegradable polymers and their degraded products do not cause any serious affects on the environment.
Some examples of biodegradable polymers are Poly(β-hydroxybutyrate-co-β-hydroxyvalerate)/PHBV, Polyglycolic acid (PGA), Nylon-2-Nylon-6.
Biodegradable polymers are the "materials of today".
These polymers are now an obvious choice for biomedical applications.
Moreover, biodegradable polymers are now trending to become materials of choice in household applications, as they are environmentally friendly.
Biodegradable polymers can be classified as synthetic and natural polymers.
Biodegradation occurs through cleaving hydrolytically or enzymatically sensitive bonds, leading to loss of polymeric materials.
Most of the natural polymers undergo enzymatic degradation.
Application of biodegradable polymers include implantable large devices, such as bone screws, bone plates, small implants such as sutures, staples,and so on.

Uses of biodegradable polymers.
Nonmedical application include those pertaining to medical plastics and the packaging industry.
Owing to their unique properties, biodegradable polymers now replace metals, alloys, and ceramics.

Questions on Biodegradable polymers;

Q1) What do you mean by biodegradable polymers?

Ans) Biodegradable polymers are the polymers which are degraded by micro-organisms within a suitable period. Thus biodegradable polymers and their degraded products do not cause any serious affects on the environment.

Q2) Write some examples of biodegradable polymers?

Ans) Some examples of biodegradable polymers are Poly(β-hydroxybutyrate-co-β-hydroxyvalerate)/PHBV, Polyglycolic acid (PGA), Nylon-2-Nylon-6.

Q3) Write some uses of biodegradable polymers?

Ans) Some uses of biodegradable polymers are given below;

1) Applications of biodegradable polymers include implantable large devices, such as bone screws, bone plates, small implants such as sutures, staples and so on.
2) Nonmedical applications include those pertaining to medical plastics and the packaging industry.
3) Owing to their unique properties, biodegradable polymers now replace metals, alloys, and ceramics. Next

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Difference between organic and inorganic polymers.

Difference between organic and inorganic polymers. Definition Organic polymers are the polymers that essentially contain carbon atom in the backbone. Inorganic polymers are the polymers that have no carbon atom in the backbone. Structure Most organic polymers have simple structures. Almost all inorganic polymers are highly branched and have complex structures. Electrical Conductivity In most of the aqueous solutions, organic polymers are typically poor conductors of electricity and heat. Inorganic polymers in aqueous solutions are good conductors of electricity, this is because they have high ability to ionise and this makes them better conductors. Flammability Organic polymers are flammable whereas inorganic polymers are nonflammable. Effect on nature Organic polymers are environmental friendly as these are biodegradable. Inorganic polymers are not environmental friendly as these are non biodegradable. Examples Organic polymers include polysaccharide...

Monomers.

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Determination of molecular weight of polymers by viscosity method.

Determination of molecular weight of polymers by viscosity method. It is a simple method for determining the molecular weight of polymers. Addition of polymers in the solvent increases the viscosity of the solvent, due to introduction of inhomogeneities by the polymers. If η₀ is the viscosity of the solvent and η is the viscosity of the solution at the same temperature, then the relative viscosity is given by Relative viscosity. Specific viscosity: It is defined as the relative increase in viscosity and is given as Specific viscosity. Reduced viscosity: It is defined as the relative increase in viscosity per unit concentration (C) of polymer and is given as Reduced viscosity. Intrinsic viscosity: The reduced viscosity is dependent on concentration (C). If a graph is plotted between reduced viscosity vs concentration then the extraplotation value when C=0 is called intrinsic viscosity. Intrinsic viscosity. Graph of reduced vi...

Polymers

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