Compatibilizer in waste tire powder and low-density polyethylene blends and the blends modified asphalt
(485–492)Journal of Applied Polymer  Science 123 #1 (2012)
Ouyang et al of the Shanghai Institute of Technology. China, showed that with the increasing ratio of waste tire powder (WTP) to low-density polyethylene (LDPE), the hardness and tensile strength of the WTP/LDPE blends decreased while the elongation at break increased.  Five kinds of compatibilizers, such as maleic anhydride-grafted polyethylene (PE-g-MA), maleic anhydride-grafted ethylene-octene copolymer (POE-g-MA), maleic anhydride-grafted linear LDPE, maleic anhydride-grafted ethylene vinyl-acetate copolymer, and maleic anhydride-grafted styrene-ethylene-butylene-styrene, were incorporated to prepare WTP/LDPE blends, respectively. PE-g-MA and POE-g-MA reinforced the tensile stress and toughness of the blends.  The toughness value of POE-g-MA incorporating blends was the highest, reached to 2032.3 MJ/m3, while that of the control was only 1402.9 MJ/m3.  Therefore, POE-g-MA was selected as asphalt modifier. The toughness value reached to the highest level when the content of POE-g-MA was about 8%. Besides that the softening point of the modified asphalt would be higher than 60°C, whereas the content of WTP/LDPE blend was more than 5%, and the blends were mixed by stirring under the shearing speed of 3000 rpm for 20 min. Especially, when the blend content was 8.5%, the softening point arrived at 82°C, contributing to asphalt strength and elastic properties in a wide range of temperature. (RDC 10/12/2011)

Mechanical Properties and Morphology of UHMWPE/PC/HDPE-g-MAH Blends
(190 – 195) Polymer - Plastics Technology and Engineering 50 #2 (2011)
Wei; Lu and Huang of the Beijing University of Chemical Technology,, China compatibilized blends of ultrahigh molecular weight polyethylene (UHMWPE), polycarbonate (PC) with a high-density polyethylene (HDPE) grafted with maleic anhydride (MAH), HDPE-g-MAH which was processed by melt extrusion.  The grafting degree of HDPE-g-MAH shows a significant role in enhancing tensile strength of the blends. The compatibilization mechanism of HDPE-g-MAH in the blends analyzed by FTIR indicates that a new grafting product, HDPE-g-PC, was in situ formed.  (RDC 2/3/2011)