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Questions and Answers
Which factor is NOT used in the classification of polymers according to the given text?
Which factor is NOT used in the classification of polymers according to the given text?
Which type of polymers occur naturally in nature and are found in plants and animals?
Which type of polymers occur naturally in nature and are found in plants and animals?
Which classification factor refers to the shape of the polymer chains?
Which classification factor refers to the shape of the polymer chains?
What are semi-synthetic polymers developed from, according to the text?
What are semi-synthetic polymers developed from, according to the text?
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Which factor determines whether a polymer is natural, semi-synthetic, or synthetic?
Which factor determines whether a polymer is natural, semi-synthetic, or synthetic?
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Which type of polymers are completely man-made?
Which type of polymers are completely man-made?
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Which type of polymer has chains that are linked together?
Which type of polymer has chains that are linked together?
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What is the term for polymers with chains joined together at a common center?
What is the term for polymers with chains joined together at a common center?
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Which type of polymer is characterized by chains with no branches?
Which type of polymer is characterized by chains with no branches?
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What do we call polymers prepared from only one type of monomer?
What do we call polymers prepared from only one type of monomer?
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What is the term for the polymer in which all pendent groups are in the same direction?
What is the term for the polymer in which all pendent groups are in the same direction?
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Which type of polymer can melt and flow by heating and return to its original state by cooling?
Which type of polymer can melt and flow by heating and return to its original state by cooling?
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What is the term for the way in which the pendent groups are arranged along the backbone chain?
What is the term for the way in which the pendent groups are arranged along the backbone chain?
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Which type of polymer has chains with branches?
Which type of polymer has chains with branches?
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Which type of polymer cannot melt or flow by heating and undergoes an irreversible process?
Which type of polymer cannot melt or flow by heating and undergoes an irreversible process?
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What do we call polymers prepared from more than one type of monomer?
What do we call polymers prepared from more than one type of monomer?
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Study Notes
Polymer Classification Factors
- Classification factors include origin, structure, polymer chains' arrangement, and behavior upon heating.
- Types include natural, semi-synthetic, and synthetic based on origin.
Types of Polymers
- Natural polymers are found in plants and animals; examples include cellulose, proteins, and DNA.
- Semi-synthetic polymers are developed from naturally occurring polymers, modified for enhanced properties.
- Synthetic polymers are entirely man-made, created through chemical processes.
Polymer Chain Structure
- The shape of the polymer chains refers to the structure classification.
- Linear polymers exhibit unbranched chains, while branched polymers contain side chains.
- Cross-linked polymers have chains linked together, forming a three-dimensional network.
- Polymers with chains joined at a common center are known as star-shaped polymers.
Behavior and Characteristics
- Thermoplastic polymers can melt and flow upon heating and return to their original state upon cooling.
- Thermosetting polymers do not melt or flow; they undergo an irreversible process when heated.
Monomer Composition
- Homopolymers are made from only one type of monomer, providing uniformity.
- Copolymers consist of more than one type of monomer, contributing to varying properties.
Pendent Group Arrangement
- The arrangement of pendent groups along the backbone chain is crucial for the polymer's characteristics.
- Polymers with all pendent groups oriented in the same direction are known as isotactic polymers.
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Description
Test your knowledge of polymer classification based on the nature of the polymer, the shape of the polymer chains, monomer type, tacticity, mode of formation, thermal response, molecular force, and crystallinity.