Thermal-sensitive intelligent polymers and their application
JOURNAL OF TEXTILE RESEARCH
2005, 26 (6):
Shape memory polymers(SMPs)here refer to themal-sensititve polymers with the ability to sense and respond to extemal stimuli in a predetermined shape.Some polymers such as polyurethane,co-polymer of Styrene and Butadiene,1,4-polyisoprene,crosslinked PE,etc.were found to have shape memory recovery ability.As compared with shape memory alloy,thermal-sensitive shape memeory polymers have low density,low cost,high shape recovery,are easy to dye,to shape and to be stimulated under expected switch temperature.Especially with polyurethane,the structure-property relationships are extremely diverse and controllable and the shape recovery temperature can be set in a wide range from-30℃ to 70℃.So they have found a wide spectrum of applications in such fields as biomedical,textile and garment,toy,packaging and military industries.Smart textiles are highly appreciated by customers for the multifunctions such as wrinkle-free,easy-care,water-proof,moisture vapor permeable(breathable),warmth retention,shape memeory,and automatic control to keep the wearer cooler or wamer.These products include outdoor garments,sportswear,sleeping bags,tent,bandage,brassiere,bellyband and military combat wear.A review is made of the thermal-sensitive intelligent polymers with focuses on the structural features,shape memory mechanism,along with their potential applications in textile,biomedical,and national defense industries.
Related Articles |