Impact modification of polyamide 11 by the reactive blending with epoxy group modified polyethylene.
Polyamide 11 (PA11) and epoxy group modified polyethylene (EGMA) were melt-blended in a segment mixer at 230 degrees C. The reactive nature of the blend is reflected in the mixing torque behavior of the blend at different compositions. The dynamic mechanical analysis reveals shifted glass transition temperatures for both PAl 1 and EGMA, indicating the improved miscibility by the reactive blending. Transmission electron microscopy (TEM) shows that EGMA is precisely dispersed in PAl 1 matrix with the domain size of several hundred nanometers for the reactive blends. The mechanical properties were also measured for the obtained material and it exhibits greatly improved impact strength as compared with the neat PA11. In addition, the toughening mechanism for the blend system was also studied.
Oono
Yuko
Y
Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan.
Li
Yongjin
Y
Nakayama
Kazuo
K
Shimizu
Hiroshi
H
D003460:Crystallization / Q000379:methods*; D004548:Elasticity; D004852:Epoxy Compounds / Q000737:chemistry*; D006244:Hardness; D006245:Hardness Tests; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods*; D009757:Nylons / Q000737:chemistry*; D010316:Particle Size; D020959:Polyethylene / Q000737:chemistry*; D013499:Surface Properties
D004852:Epoxy Compounds; D046911:Macromolecular Substances; D009757:Nylons; D020959:Polyethylene