Is hair an example of a polymer?

Natural and synthetic polymers Silk and hair are polymers known as polypeptides. Cellulose, which makes up the cell wall of plants, is another natural polymer. The proteins we eat, and which we’re made of, are polymers made up of amino acids. And even our DNA is a polymer—it’s made of monomers called nucleotides.

Which are the branched polymer?

Branched polymers are defined as having secondary polymer chains linked to a primary backbone, resulting in a variety of polymer architectures such as star, H-shaped, pom-pom, and comb-shaped polymers.

What is an example of a network polymer?

An example of a network polymer formed by weak connections is the gel formed by pectin. This natural network polymer is the basis for jellies and jams. The properties of network polymers depend on the density of the network.

What are isotactic polymers?

Isotactic polymers are composed of isotactic macromolecules (IUPAC definition). In isotactic macromolecules all the substituents are located on the same side of the macromolecular backbone. An isotactic macromolecule consists of 100% meso diads. Polypropylene formed by Ziegler–Natta catalysis is an isotactic polymer.

Is a lipid a polymer?

Lipids are not usually polymers and are smaller than the other three, so they are not considered macromolecules by some sources 1,2start superscript, 1, comma, 2, end superscript.

Is human skin a polymer?

The human body contains many natural polymers — even the nucleic acids (DNA) and proteins that determine your genetic makeup are polymers. The body is estimated to contain 100,000 different polymer-based proteins. Protein is a main component of skin, organs, muscles, hair and fingernails.

What is linear polymer?

A linear polymer is a long continuous chain of carbon–carbon bonds with the remaining two valence bonds attached primarily to hydrogen or another relatively small hydrocarbon moiety.

What are linear and branched polymers?

Linear polymers are macromolecules containing a large number of repeating units or monomers that attach to each other forming a straight linear structure while branched polymers are macromolecules containing a large number of repeating units arranged in a branched structure.

What are examples of condensation polymers?

Examples of natural condensation polymers include cellulose, starch, and polypeptide chains of proteins. Several synthetic condensation polymers discussed include nylon, kevlar, polyester, Bakelite, Melamine, polycarbonates, polyurethanes, epoxies.

Which polymer is space network polymer?

polystyrene. polystyrene, a hard, stiff, brilliantly transparent synthetic resin produced by the polymerization of styrene.

Is PVC network polymer?

PVC is a thermoplastic polymer. Its properties are usually categorized based on rigid and flexible PVCs.

What is the name of Ziegler Natta catalyst?

A Ziegler–Natta catalyst, named after Karl Ziegler and Giulio Natta, is a catalyst used in the synthesis of polymers of 1-alkenes (alpha-olefins).

What are isotactic and atactic polymer?

The key difference between atactic isotactic and syndiotactic polymer is that atactic polymers have their substituents in a random manner and isotactic polymers have their substituents in the same side, whereas the syndiotactic polymers have their substituents in an alternating pattern.

What are isotactic and syndiotactic polymers?

If all the methyl groups lie on the same side of the chain, the polymer is called isotactic. If the methyl groups alternate in a regular fashion from one side of the chain to the other, the polymer is syndiotactic.

What is meant by syndiotactic polymer?

(of a polymer molecule) having a regular alternation of opposite configurations at successive regularly spaced positions along the chain.

What are the 4 macromolecules?

11.1 Introduction: The Four Major Macromolecules These are the carbohydrates, lipids (or fats), proteins, and nucleic acids.

Is triglyceride a polymer?

Fatty acids form more complex lipid polymers called triglycerides, triacylglycerols or triacylglycerides when each single-bonded oxygen molecule bonds to a carbon that’s part of a glycerol molecule. … Triglycerides are also commonly found in foods, especially animal products.

Are proteins polymer?

Proteins are polymers in which the 20 natural amino acids are linked by amide bonds. … These nonribosomal peptides and amino acids often play an important role in structural and functional proteins.

Why are polymers used in shampoo?

Many polymers are very useful in shampoos and conditioning products because they help to thicken and maintain the viscosity of the product, which gives the desired product consistency for the consumer.

Are elastomers polymers?

‘ The elasticity of elastomers is a good reason why this particular polymer is often used interchangeably with the word, ‘rubber. ‘ Nevertheless, an elastomer is a polymer with viscoelasticity, having properties of both viscosity and elasticity.

Is wood a polymer?

Wood itself contains polymers such as lignin, cellulose, and various hemi- celluloses but has very different properties from the synthetic polymers with which it is most often combined. Wood is less expensive, stiffer, and stronger than these synthetic polymers, making it a useful filler or reinforcement.

What are the 4 types of polymers?

Synthetic polymers are human-made polymers. They can be classified into four main categories: thermoplastics, thermosets, elastomers, and synthetic fibers.

What is LDPE made of?

Low-density polyethylene (LDPE) is a thermoplastic made from the monomer ethylene. It was the first grade of polyethylene, produced in 1933 by Imperial Chemical Industries (ICI) using a high pressure process via free radical polymerization.

Is nylon 66 a linear polymer?

a)Linear chain polymer: Polymer in which single monomer (incase of homo polymer) or more than one monomer (incase of copolymer) units are linked together to form only long chain or straight chain linear polymer called linear chain polymer. … (homopolymer); Nylon-66 Styrene butadiene polyester(copolymer)etc.

What is the difference between branched and unbranched polymers?

Branched carbon chains cannot line up as close to each other as unbranched chains can. This causes less contact between atoms of different chains, and fewer opportunities for induced or permanent dipoles to occur. … Branching makes the polymers less dense and results in low tensile strength and melting points.

Is Bakelite linear or branched?

Bakelite is a space-network polymer. Unlike linear and branched polymers (see demonstration 25.2), which are composed of long molecules that make them more or less crystalline, space-network polymers are highly and irregularly cross-linked throughout the structure.

What is the difference between linear branched and crosslinked polymers?

We can divide polymers into two groups depending on the basic structure of polymer: linear polymers and crosslinked polymers. The main difference between linear polymers and crosslinked polymers is that linear polymers are straight chain structures whereas crosslinked polymers are branched structures.

Is Bakelite condensation polymer?

Bakelite: this polymer is made up of phenol and formaldehyde by condensation polymerization. … Hence, Bakelite is a type of condensation polymer.

Is polyethylene terephthalate a condensation polymer?

Polyethylene terephthalate (PET), or polyethylene terephthalic ester (PETE), is a condensation polymer produced from the monomers ethylene glycol, HOCH₂CH₂OH, a dialcohol, and dimethyl terephthalate, CH₃O₂C–C₆H₄–CO₂CH₃, a diester.

Is Teflon condensation polymer?

Polymers are made up of extremely large, chainlike molecules consisting of numerous, smaller, repeating units called monomers. … Addition polymers include polyethylene, polypropylene, Teflon, Lucite, and rubber. etc. Condensation polymers include nylon, Dacron, and Formica.