I wash my T-shirt with hot water then dry with hot air. Wrinkles form because the polymers of the fiber break bonds when heated then form new ones when they cool off giving them a new shape. I take the same T-shirt iron it until it's nice and flat. But then I started folding it and squishing it, new wrinkles form. Was it because of the folding and squishing? Did the friction from folding generate enough heat to break bonds? If so can chem anons brainstorm on a method (additive, fiber layer, etc) that would prevent my clothes from having wrinkles in the first place? (If you have specific fiber type and molecular formulas that's good but I'm looking for general dynamics like how curls in hair are maintained by the breaking and reforming of sulfur bonds in hair)