Since their discovery in 1980, shape memory polymers (SMPs) have been attracting significant attention from scientist and engineers due to their extraordinary properties. Shape memory polymers have the ability to shift between a permanent and a temporary shape1, which results in a variety of applications. An attractive field of application for SMPs is biomedical devices such as sutures or catheters2. SMPs are also used for drug delivery systems , and they have cardiovascular, orthodontic and surgical applications2. For instance, SMP can be useful for the treatment of obesity by implanting a biocompatible SMP to the patient which will inflate after a predetermined time providing a feeling of satiety3. High performance thermoplastics like polymeric sulfones (i.e. polysulfone) are great candidates for such medical applications because of their chemical and thermal stability as well as their biocompatible and antimicrobial properties. Despite the many positive characteristics that PSf offers, its hydrophobic nature is a disadvantage for medical use. Poly(ethylene glycol) (PEG) is a hydrophilic polymer with excellent biocompatibility. Combining PSf with linear hydrophilic PEG (Mw = 750, 2000, 5000) will enhance not only hydrophilicity but also crystallinity of the material, and this will contribute to expand its applications. In this study, to obtain an amphiphilic copolymer, PSf backbone was functionalized with chloromethyl group, and then different molecular weight of linear PEG chains were grafted onto chloromethyl functionalized PSf backbone. The graft copolymers were analyzed using nuclear magnetic resonans (NMR), gel permeation chromatography (GPC), differential scanning calorimetry (DSC) and water contact angle (CA). Shape memory properties of obtained graft copolymers were examined with a series of bending tests. 1.Eken, G. A.; Acar, M. H., Macromol Chem Phys 2018, 219 (20), 5. 2.Wang, K.J., S. Strandman, and X.X. Zhu, Front Chem Sci Eng 2017, 11 (2), 143-153. 3.Behl, M. and A. Lendlein, Shape-memory polymers. Mater Today 2007, 10 (4), 20-28.