The effect of the processing molding temperature on the properties and crystalline structure of acrylonitrile-butadiene rubber (NBR)/nylon 6,66,1010 (trinylon) thermoplastic vulcanizates (TPV) was studied. With decreasing molding temperature, the stress at 100% and elongation at break of TPV changed slightly, and the solvent resistance of TPV improved. The best conditions for processing molding were 170 degrees C and 12 min. The crystalline structure of the nylon continuous phase in TPV was investigated by X-ray diffraction, polarized optical microscopy, and differential scanning calorimetry. The results show that the crystalline structure of the nylon phase in TPV was more perfect/orderly and formed alpha-crystalline structure at a processing molding temperature of 170 degrees C. Therefore, the oil resistance of NBR/trinylon TPV clearly improved. (c) 2006 Wiley Periodicals, Inc.