Abstract
The phase morphology and thermal behavior of various isotactic polypropylene (PP)/linear low density polyethylene (LLDPE) blends were investigated with aid of scanning electron microscopy (SEM) and differential scanning calorimetry (DSC), respectively. The effect of barrel (melt) temperature on the morphology, thermal behavior and the resultant mechanical properties of the injection molded bars was the research focus, and the influence of LLDPE composition was also taken into account. It was found that the mechanical properties, especially the tensile ductility and the impact strength, were greatly affected by the processing temperature. The samples obtained at low temperatures had the highest elongation at break and impact strength, while those molded at high temperatures had the poorest toughness. Two reasons were responsible for that: first, the phase size in the samples increased with the processing temperature; second, possible orientation existed in the samples obtained at low processing temperatures.
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References
Chaudhry, B., Hage, E. and Pessan, L., J. Appl. Polym. Sci., 1998, 67: 1605
Lee, J.K. and Han, C.D., Polymer, 1999, 40: 6277
Lee, J.K. and Han, C.D., Polymer, 2000, 41: 1799
Wimolmala, E., Wootthikanokkhan, J. and Sombatsompop, N., J. Appl. Polym. Sci., 2001, 80: 2523
Choi, J., Kim, H., Han, D., Lim, J.D. and Min, K., J. Appl. Polym. Sci., 2006, 101: 1
Sarazin, P. and Favis, B., J. Polym. Sci., Part B: Polym. Phys., 2007, 45: 864
Moreira, A.F. Jr. and Siesler, B., J. Appl. Polym. Sci., 2003, 89: 386
You, J., Shi, T., Liao, Y., Li, X., Su, Z. and An, L., Polymer, 2008, 49: 4456
Li, J., Wang, Q., Chan, C. and Wu, J., Polymer, 2004, 45: 5719
Sarazin, P. and Favis, B., Polymer, 2005, 46: 5966
Veenstra, H., Dam, J. and Boer, A., Polymer, 1999, 40: 1119
Li, J., Zhang, X., Qu, C., Zhang, Q., Du, R., and Fu, Q., J. Appl. Polym. Sci., 2007, 105: 2252
Ghiam, F. and White, J., Polym. Eng. Sci., 1991, 31: 76
Blom, H., The, J. and Rudin, A., J. Appl. Polym. Sci., 1998, 70: 2081
Grigorova, M. and Mihailov, M., J. Appl. Polym. Sci., 1996, 62: 721
Kukaleva, N., Cser, F., Jollands, M. and Kosior, E., J. Appl. Polym. Sci., 2000, 77: 1591
Veenstra, H., Lent, B., Dam, J. and Boer, A., Polymer, 1999, 40: 6661
Veenstra, H., Dam, J. and Boer, A., Polymer, 2000, 41: 3037
Pang, Y., Dong, X., Zhao, Y., Han, C. and Wang, D., Polymer, 2007, 48: 6395
Kole, S., Bhattacharya, A., Tripathy, D. and Bhowmick, A., J. Appl. Polym. Sci., 1993, 48: 529
Bureau, M., Kadi, H., Denault, J. and Dickson, J., Polym. Eng. Sci., 1997, 37: 377
Liang, S., Yang, H., Wang, K., Zhang, Q., Du, R. and Fu, Q., Acta Mater., 2008, 56: 50
Na, B., Zhang, Q., Fu, Q., Zhang, G. and Shen, K., Polymer, 2002, 43: 7367
Gu, H., Mater. Design., 2006, 27: 1086
Aoyagi, Y., Doi, Y. and Iwat, T., Polym. Degrad. Stab., 2003, 79: 209
Zhao, P., Wang, K., Yang, H., Zhang, Q., Du, R. and Fu, Q., Polymer, 2007, 48: 5688
Su, R., Wang, K., Zhao, P., Zhang, Q., Du, R., Fu, Q. and Li, L., Polymer, 2007, 48: 4529
Li, J., Shanks, R. and Long, Y., Polymer, 2001, 42: 1941
Li, J., Shanks, R., Olley, R. and Greenway, G., Polymer, 2001, 42: 7685
Gorrasi, G., Pucciariello, R., Villani, V., Vittoria, V. and Belviso, S., J. Appl. Polym. Sci., 2003, 90: 3338
Wang, Y., Xiao, Y., Zhang, Q., Gao, X. and Fu, Q., Polymer, 2003, 44: 1469
Su, R., Su, J., Wang, K., Yang, C., Zhang, Q. and Fu, Q., Eur. Polym. J., 2009, 45: 747
Xie, W., Tam, K., Yue, C., Lam, Y., Li, L. and Hu, X., Polym. Int., 2003, 52: 733
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This work was financially supported by the National Natural Science Foundation of China (Nos. 50533050, 20874064 and 50873063).
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Su, R., Wang, K., Zhang, Q. et al. Effect of melt temperature on the phase morphology, thermal behavior and mechanical properties of injection-molded PP/LLDPE blends. Chin J Polym Sci 28, 249–255 (2010). https://doi.org/10.1007/s10118-010-9013-1
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DOI: https://doi.org/10.1007/s10118-010-9013-1