Question

How to determine chemical bond strength in polymer?

Answer 1

Polymers are defined as long chains composed of repetitive units [POLY-many; MER-unit]. Although, there is a common belief that polymers are straight chains, they are in reality more like spaghettis in a bowl . Chains are all entangled and try to face themselves.    When  there  are  no  specific  interactions  between  chains  and  they just entangle, you can consider this a physical bond. These bonds are weak in nature and can be easily disrupted by a solvent where the polymer feels more comfortable in.