Polyglycolic acid (PGA).

Polyglycolic acid is obtained from glycolic acid monomer.

Polyglycolic acid.
Polyglycolic acid is a biodegradable polymer.
It is a thermoplastic.
Polyglycolic acid is the simplest aliphatic polyester.
Polyglycolic acid can degrade within weeks, depending on its molecular weight.
Polyglycolic acid has been commercially available as synthetic and absorbable sutures since 1970.
Application of PGA in the medical field include drug delivery systems and disposable medical devices.
PGA can be used in wastewater treatment.
PGA can be used in food packaging.

Uses of Polyglycolic acid.

Questions on Polyglycolic acid;

Q1) What is Polyglycolic acid?

Ans) Polyglycolic acid is a biodegradable polymer. It is a thermoplastic.

Q2) How is Polyglycolic acid obtained?

Ans) Polyglycolic acid is obtained from glycolic acid monomer.

Q3) Write some properties of Polyglycolic acid?

Ans) Some uses of Polyglycolic acid are given below;

1) Polyglycolic acid is a biodegradable polymer.

2) It is a thermoplastic.

3) Polyglycolic acid is the simplest aliphatic polyester.

4) Polyglycolic acid can degrade within weeks, depending on its molecular weight.

Q4) Write some uses of Polyglycolic acid?

Ans) Some uses of Polyglycolic acid are given below;

1) Polyglycolic acid has been commercially available as synthetic and absorbable sutures since 1970.

2) Application of Polyglycolic acid in the medical field include drug delivery systems and disposable medical devices.

3) Polyglycolic acid can be used in wastewater treatment.

4) Polyglycolic acid can be used in food packaging. Next

Comments

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 viscosity vs concentr

Polypropylene (PP)

Polypropylene (PP). Polypropylene (PP) is also known as polypropene. Polypropylene is made from the polymerisation of propylene gas in the presence of Zeiglar Natta catalyst or metallocene catalyst. Polypropylene. Thus propene (or propylene) is the monomer of polypropylene. Polypropylene is a highly flammable material. It is sensitive to microbial attacks, such as bacteria and mold. It exhibits excellent resistance to diluted and concentrated acids, alcohols and bases. Polypropylene is used to make lunch boxes, margarine containers, yogurt pots, syrup bottles etc. Disposable syringes is the most common medical application of polypropylene. Polypropylene rope and twine are very strong and moisture resistant very suitable for marine applications. Polypropylene, highly colorfast, is widely used in manufacturing carpets, rugs and mats. Uses of Polypropylene. Questions on polypropylene; Q1) What is polypropylene? Ans) Polypropylene is a polymer of propylen

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

Polymers

Search This Blog