Author/Authors :
Yang، نويسنده , , Huawei and Luan، نويسنده , , Shifang and Zhao، نويسنده , , Jie and Shi، نويسنده , , Hengchong and Li، نويسنده , , Xiaomeng and Song، نويسنده , , Lingjie and Jin، نويسنده , , Jing and Shi، نويسنده , , Qiang and Yin، نويسنده , , Jinghua and Shi، نويسنده , , Dean and Stagnaro، نويسنده , , Paola، نويسنده ,
Abstract :
In this work, in order to enhance the grafting degree, N-vinyl pyrrolidone (NVP) was used to assist the melt grafting of the macromonomer-poly(ethylene glycol) methyl ether methacrylate (PEGM)-which has good hemocompatible property, onto styrene-b-(ethylene-co-butylene)-b-styrene (SEBS) elastomer with free radical initiator. The grafting degree of PEGM with NVP assistance was increased by at least 4-fold to those without NVP. In addition, side reactions such as homopolyerization of the PEGM monomer during the melt grafting process could be largely reduced in the NVP-assisted system. Both the hydrophilicity and hemocompatibility of the PEGM modified SEBS were highly improved. Comparing to virgin SEBS, the amount of fibrinogen adsorption was reduced by up to 75% in the NVP-assisted grafting samples.
