שאלה | A number of extreme changes occur upon chemical crosslinking of polymers. Which one of the statements is not true?

A number of extreme changes occur upon chemical crosslinking of polymers. Which one of the statements is not true?

		Increasing crosslink density in plastics increases rigidity which can give brittle polymers
		Crosslinking is frequently used to decrease the glass transition and crystalline transition temperatures.
		In elastomers (rubbers) the crosslink density is low to allow large reverible deformations
		One major effect of crosslinking is that soluble polymers no longer soluble