AP EAMCET202318 May 2023Morning ShiftChemistryPolymersActual
Identify the correct statement from the following with respect to high density polythene
Options
- ATiCl ₄ and Et ₃ Al used as catalyst for preparation
- BObtained by the polymerization of ethene at 350-570 ~K
- CHas highly branched structure
- DChemically active
Correct answer
A. TiCl ₄ and Et ₃ Al used as catalyst for preparation
Step-by-step solution
Ziegler-Natta catalyst ( TiCl ₄+ Et ₃ Al ) is used for the preparation of high-density polythene. Branching reduces the density so high-density polythene has low degree of branching. HDPE is chemically inert and is prepared in the temperature range of 333 ~K to 343 ~K .