What are the different kinds of polymer?
The eight most common types of synthetic organic polymers, which are commonly found in households are:
- Low-density polyethylene (LDPE)
- High-density polyethylene (HDPE)
- Polypropylene (PP)
- Polyvinyl chloride (PVC)
- Polystyrene (PS)
- Nylon, nylon 6, nylon 6,6.
- Teflon (Polytetrafluoroethylene)
- Thermoplastic polyurethanes (TPU)
What is polymer and its uses?
Product made from polymers are all around us: clothing made from synthetic fibers, polyethylene cups, fiberglass, nylon bearings, plastic bags, polymer-based paints, epoxy glue, polyurethane foam cushion, silicone heart valves, and Teflon-coated cookware.
What is difference between plastic and polymer?
The terms polymer and plastic are not the same. Plastic is a specific type of polymer comprised of a long chain of polymers. Polymers, on the other hand, are made up of uniform molecules that are smaller than plastic molecules.
What are the characteristics of polymer?
Some of the useful properties of various engineering polymers are high strength or modulus to weight ratios (light weight but comparatively stiff and strong), toughness, resilience, resistance to corrosion, lack of conductivity (heat and electrical), color, transparency, processing, and low cost.
What is a polymer simple definition?
The simplest definition of a polymer is a useful chemical made of many repeating units.
Why is DNA a polymer?
DNA is a polymer made from four different monomers , called nucleotides . These join together in different combinations to make long strands. In a DNA molecule , two strands wrap around each other to form a double helix structure.
Is DNA a biological polymer?
DNA. DNA (deoxyribonucleic acid) is a polymer which is essential for life. The DNA polymer is made from four different types of monomer , which are called nucleotides . The sequence of nucleotides along the DNA molecule is a code for genes .
What is not a biological polymer?
Triglycerides (a) and glucose (c) are are not considered biological polymers.
What is insulin a polymer of?
The insulin molecule contains 51 amino acids; it is made up of two peptide chains linked by disulphide bonds. Although it is active as a monomer, during its biosynthesis and storage it assembles to dimers and, in the presence of zinc, to hexamers.
What are the subunits of DNA called?
DNA is composed of smaller subunits know as Nucleotides. The three parts of a nucleotide are Sugar, phosphate, and a nitrogen base. The four nitrogen bases that are found in DNA are Adenine, cytosine, guanine, and thymine.
What are the 3 subunits of DNA?
Nucleotides are composed of three subunit molecules: a nucleobase, a five-carbon sugar (ribose or deoxyribose), and a phosphate group consisting of one to three phosphates. The four nucleobases in DNA are guanine, adenine, cytosine and thymine; in RNA, uracil is used in place of thymine.
What are the 2 subunits of DNA?
Nucleotides are the subunits of DNA. The four nucleotides are adenine, cytosine, guanine and thymine. Adenine and guanine are purine bases, while cytosine and thymine are pyrimidine bases. These four nucleotides, referred to as the A, C, G and T are the building blocks of DNA.
What are the two types of pyrimidines?
There are three main types of pyrimidines, however only one of them exists in both DNA and RNA: Cytosine. The other two are Uracil, which is RNA exclusive, and Thymine, which is DNA exclusive.
What are pyrimidines examples?
Pyrimidines include cytosine, thymine, and uracil whereas purines include adenine and guanine. These five nitrogenous bases are regarded as primary or canonical since they are the fundamental units of the genetic code.
What are the 2 bases of purines?
Nitrogenous bases present in the DNA can be grouped into two categories: purines (Adenine (A) and Guanine (G)), and pyrimidine (Cytosine (C) and Thymine (T)).