Draw a diagram to show the:
(a) linear arrangement of units in plastic.
(b) cross-linked arrangement of units in plastic.
Answers
Answer:
In linear arrangement, the units of plastic are arranged one after the other forming a linear chain.
In a cross-linked arrangement, the chemical bonds are formed between the adjacent chain of units forming a network structure.
Explanation:
Plastic is a synthetic material/substance made up of many organic polymers (i.e., PVC, nylon,polyethylene etc).
Types of plastic
- Thermoplastic - These are the type of plastic which on heating loses its shape. (eg. Polythene)
- Thermosetting plastic - These are the type of plastic when once molded and then on heating it doesn't lose its shape. (eg. Bakelite)
Characteristics of plastic
- Plastics are durable, cheap and strong.
- Plastic is a poor conductor of heat and electricity.
- Plastics are non-biodegradable, they take years to biodegrade or doesn't get degraded.
- Plastic will not react with water, air and with most of the chemicals.
Answer:
(a). the linear arrangement of units in plastic
(b). cross-linked arrangement of units in plastic.
Explanation:
The plastic units are stacked one after the other in a linear chain in the linear configuration.
Chemical bonds are established between neighbouring chains of units in a cross-linked configuration, which includes a network structure.
Plastic is a man-made substance made composed of a variety of organic polymers (i.e., PVC, nylon, polyethene etc.).
Different types of plastic
Thermoplastic - This is a form of plastic that loses its shape when heated. (Polythene, for example)
Thermosetting plastic is a form of plastic that retains its shape after being moulded and heated. (Bakelite, for example)
Plastic characteristics
Plastics are long-lasting, inexpensive, and powerful.
Plastic is a poor heat and electricity conductor.
Plastics are non-biodegradable, taking years to disintegrate or not degrading at all.
Water, oxygen, and most chemicals will not react with plastic.
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