Effect of Solid-state Shear milling on Structure and Properties of HDPE/UHMWPE blends
writer：Yang Chen, Yi Li, Huawei Zou*, Mei Liang
keywords：Yang Chen, Yi Li, Huawei Zou*, Mei Liang
source：期刊
specific source：Journal of Applied Polymer Science, 2014, 131(4): 2090-2097
Issue time：2014年
ABSTRACT: The structure and properties of HDPE/UHMWPE blends prepared through a pan-milling reactor in solid state at ambient temperature were compared with the blends made by melt mixing. The changes of structure and properties of the blends were investigated by FTIR, melt flow index, mechanical properties, dynamic rheological measurement, DSC, and WAXD. DSC measurement illustrated that after pan-milling treatment, the half-width of the melting temperature became smaller. The more content of UHMWPE added in the blend, the more evident change was observed. Combined with the dynamic rheological analysis, it was proved that, the pan-milling treatment can improve the compatibility of the HDPE/UHMWPE blends. X-ray diffraction analysis showed that after pan-milling treatment some ordered structure could be induced, but after heat treatment, the induced crystalline structure disappeared. The tensile properties of pan-milled HDPE/UHMWPE blends also achieved improvement after pan milling treatment.