1. Tardigrade
  2. Question
  3. Chemistry
  4. In Buna- S, the symbol 'Bu' stands for

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. In Buna- $S$, the symbol $'Bu'$ stands for

KCETKCET 2013Polymers

Solution:

When a mixture of $1,3$ -butadiene and styrene in the ratio of $3: 1$ and in presence of sodium undergoes copolymerisation, it gives styrene butadiene copolymer commonly called as styrene butadiene rubber.

(SBR) or Buna-S

image

image

In Buna- $S, Bu$ stands for butadiene, $Na$ for sadium which is the polymerising agent and $S$ stands for styrene.