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Answer the following. Write main specialities of Buna-S, Neoprene rubber?

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प्रश्न

Answer the following.

Write main specialities of Buna-S, Neoprene rubber?

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उत्तर

  1. Buna-S:
    It has mechanical strength and has abrasion resistance. Hence, it is used in tyre industry.
  2. Neoprene:
  • Neoprene is particularly resistant to petroleum, vegetable oils, light as well as heat.
  • Hence, it is used in making hose pipes for the transport of gasoline and making gaskets.
  • It is used for manufacturing insulator cable, jackets, belts for power transmission and conveying.
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अध्याय 15: Introduction to Polymer Chemistry - Exercises [पृष्ठ ३३९]

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बालभारती Chemistry [English] Standard 12 Maharashtra State Board
अध्याय 15 Introduction to Polymer Chemistry
Exercises | Q 5. iii. | पृष्ठ ३३९

वीडियो ट्यूटोरियलVIEW ALL [1]

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\[\ce{n HOOC–R–COOH + n HO–R'–OH}\]


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\[\begin{array}{cc}
\ce{[-C-CH2-NH-C-(-CH2)5 NH -]_{{n}}}\\
\phantom{}||\phantom{.............}||\phantom{................}\\
\phantom{}\ce{O}\phantom{.............}\ce{O}\phantom{................}
\end{array}\]


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I. \[\begin{array}{cc}
\ce{-(CH2 - CH -)_{{n}}}\\
\phantom{....}|\\
\phantom{.......}\ce{C6H5}
\end{array}\]

II. \[\ce{-(CH2 - CH = CH - CH2 -)_{{n}}}\]

III. \[\ce{-(CO(CH2)4 - CONH(CH2)6NH -)_{{n}}}\]

IV.


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\[\begin{array}{cc}
\phantom{....}\ce{O}\phantom{............}\ce{O}\phantom{...................}\ce{H}\phantom{.....}\\
\phantom{....}||\phantom{.............}||\phantom{...................}|\phantom{......}\\
\ce{-[C - (CH2)4 - C - NH - (CH2)6 - N -]_{{n}}}
\end{array}\]


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Column I Column II
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(a) \[\begin{array}{cc}
\ce{-(CH2 - CH)\underset{n}{-}}\\
\phantom{....}|\\
\phantom{.......}\ce{C6H5}
\end{array}\]

(ii) Polystyrene (b) \[\begin{array}{cc}
\ce{Cl}\phantom{.......}\\
|\phantom{........}\\
\phantom{}\ce{-(CH2 - C = CH - CH2)\underset{n}{-}}
\end{array}\]
(iii) Neoprene (c) \[\begin{array}{cc}
\phantom{................................}\ce{CN}\\
\phantom{..............................}|\\
\ce{-(CH2 - CH = CH - CH2 - CH2 - CH)\underset{n}{-}}
\end{array}\]
(iv) Novolac (d) \[\begin{array}{cc}
\ce{-(CH2 - CH)\underset{n}{-}}\\
\phantom{.....}|\\
\phantom{.......}\ce{CN}
\end{array}\]
(v) Buna—N (e) 
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\ce{-(CH2 - CH)\underset{n}{-}}\\
\phantom{.....}|\\
\phantom{......}\ce{Cl}
\end{array}\]

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Write the structure of isoprene and the polymer obtained from it.


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