This study investigates the thermal shrinkage behavior of cold-drawn or necked crystalline polymer solids through a mathematical framework of catastrophe theory. While polymers necked by uniaxial stretching exhibit irreversible macroscopic plastic deformation. they demonstrate significant shape-memory recoverability upon thermal treatment. A phenomenological approach based on the van ... https://safeersappliancers.shop/product-category/lg-gsl760mcxv-american-style-smart-fridge-freezer-black/