Impact properties, phase structure, compatibility, and fracture morphology of polyamide-1010/thermoplastic poly(ester urethane) elastomer blends

• Published in: Journal of polymer science. Part B, Polymer physics Polymer physics, 2005-05, Vol.43 (10), p.1177-1185
• Main Authors: Zhang, Shu-Ling, Wang, Gui-Bin, Jiang, Zhen-Hua, Wang, Dong, Ma, Rong-Tang, Wu, Zhong-Wen
• Format: Article
• Language: English
• Subjects: Applied sciences; blends; compatibility; Exact sciences and technology; fracture morphology; impact property; Mechanical properties; Organic polymers; particle size distribution; Physicochemistry of polymers; polyamide-1010; Properties and characterization; thermoplastic poly(ester urethane) elastomer
• ISSN: 0887-6266; 1099-0488
• DOI: 10.1002/polb.20410

Blends of polyamide‐1010 (PA1010) and a thermoplastic poly(ester urethane) elastomer (TPU) were prepared by melt extrusion. The impact properties, phase structure, compatibility, and fracture morphology under impact were investigated for PA1010/TPU blends. The results indicated that TPU enhanced the impact strength of PA1010, and the best impact modification effect of the blends was obtained with 20 wt % TPU. The phase structure was investigated with scanning electron microscopy, and the compatibility was investigated with dynamic mechanical analysis and small‐angle X‐ray scattering. The study of the fracture morphology of PA1010/TPU blends indicated that the fracture surface of the blends had special features, consisting of many fibrillar elastomer particles and a conglutination–multilayer structure, as well as many small tubers on this structure. These fracture phenomena could not be found on the fracture surface of pure PA1010. © 2005 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 43: 1177–1185, 2005