Abstract
High density polyethylene (HDPE) with moderate content of crosslink network (CPE) was successfully prepared through chemical method. Specimens for structural characterization have been molded by conventional injection molding (CIM) and pressure vibration injection molding (PVIM). Influence of crosslink network on hierarchical morphology distribution and mechanical properties was systematically studied. Polarized light microscopy (PLM) revealed that both CIM and PVIM PE samples have a typical “skin-core” structure and the thickness of shear layer of CIM PE and PVIM CPE samples obviously increase. Scanning electron microscopy (SEM) showed that shish-kebab structures are clearly observed in shear layer of CIM CPE sample, indicating that the crosslink network can surely improve the formation of shish-kebab structures. Moreover, we suppose that shish-kebab structures emerged in shear and core layer of PVIM CPE sample. Wideangle X-ray diffraction (WAXD) and small-angle X-ray scattering (SAXS) confirmed that more orientation and shish-kebab structures form even in core layer of PVIM CPE sample, which demonstrated that the hierarchical morphology was apparently altered by periodical shear and crosslink network. Finally, the mechanical properties revealed that this oriented structure increase the tensile strength from 31 MPa of CIM PE sample to 46 MPa of PVIM CPE sample. However, the tensile behavior tended to change from ductile fracture to brittle fracture.
Similar content being viewed by others
References
Sedighiamiri, A., Govaert, L.E., Kanters, M.J.W. and van Dommelen, J.A.W., J. Polym. Sci., Part B: Polym. Phys., 2012, 50(24): 1664
Dikovsky, D., Marom, G., Avila-Orta, C.A., Somani, R.H. and Hsiao, B.S., Polymer, 2005, 46(9): 3096
Hsiao, B.S., Yang, L., Somani, R.H., Avila-Orta, C.A. and Zhu, L., Phys. Rev. Lett., 2005, 94(11): 117802
Kolnaar, H.W. and Keller, A., Polymer, 1997, 38(8): 1817
Nadkarni, V.M. and Schultz, J., J. Polym. Sci., Part B: Polym. Phys., 1977, 15(2): 2151
Somani, R.H., Yang, L.; Zhu, L. and Hsiao, B.S., Polymer, 2005, 46(20): 8587
Yang, L., Somani, R.H., Sics, I., Hsiao, B.S., Kolb, R., Fruitwala, H. and Ong, C., Macromolecules, 2004, 37(13): 4845
Dukovski, I. and Muthukumar, M., J. Chem. Phys., 2003, 118(14): 6648
Fujiyama, M., Wakino, T. and Kawasaki, Y., J. Appl. Polym. Sci., 1988, 35(1): 29
Fujiyama, M. and Wakino, T., J. Appl. Polym. Sci., 1991, 43(1): 57
Schrauwen, B.A.G., Breemen, L.C.A.V., Spoelstra, A.B., Govaert, L.E., Peters, G.W.M. and Meijer, H.E.H., Macromolecules, 2004, 37(23): 8618
Kech, A., Ludwig, H.C., Möginger, B., Eyerer, P. and Christianse, D.C., Int. Polym. Proc., 2000, 15(2): 202
Zhang, Z., Zhang, R., Huang, Y., Lei, J., Chen, Y.H., Tang, J.H. and Li, Z.M., Ind. Eng. Chem. Res., 2014, 53(24): 10144
Zhong, G.J., Chen, Z.C., Li, Z.M., Shen, K.Z., Li, L. and Hsiao, B.S., J. Macromol. Sci., Part B: Phys., 2010, 50(2): 383
Yang, H.R., Lei, J., Li, L., Fu, Q. and Li, Z.M., Macromolecules, 2012, 45(16): 6600
Zhang, Q.P., Wang, L., Xia, X.C., Feng, J.M., Fu, X.R. and Yang, M.B., J. Appl. Polym. Sci., 2014, 131(11): 2928
Hu, S., Yang, W., Liang, S.P., Yang, B. and Yang, M.B., J. Macromol. Sci., B., 2009, 48(6): 1201
Yang, B., Fu, X.R., Yang, W., Liang, S.P., Sun, N., Hu, S. and Yang, M.B., Macromol. Mater. Eng., 2009, 294(5): 336
Zhang, J., Liu, H., Zhang, L., Zhou, Q., Gao, X. and Shen, K., Polym. Bull., 2012, 68(1): 239
Zhang, Y., Zhang, J., Qian, X., Deng, P. and Shen, K., Polymer, 2012, 53(19): 4318
Zhou, Q., Liu, F., Guo, C., Fu, Q., Shen, K. and Zhang, J., Polymer, 2011, 52(13): 2970
Zhang, J., Qian, X., Liu, F., Zhu, J., Shen, K. and Gao, X., J. Macromol. Sci., Part B: Phys., 2010, 50(1): 41
An, Y., Gu, L., Wang, Y., Li, Y.M., Yang, W., Xie, B.H. and Yang, M.B., Mater. Design., 2012, 35(35): 633
An, Y., Bao, R.Y., Liu, Z.Y., Wu, X.J., Yang, W., Xie, B.H. and Yang, M.B., Eur. Polym. J., 2013, 49(2): 538
Zhang, Y., Zhang, L., Liu, H., Du, H., Zhang, J., Wang, T. and Zhang, X., Polymer, 2013, 54(21): 6026
Xue, Y.Q., Tervoort, T.A. and Lemstra, P.J., Macromolecules, 1998, 31: 3075
Khonakdar, H., Jafari, S., Wagenknecht, U. and Jehnichen, D., Radiat. Phys. Chem., 2006, 75(1): 78
Keum, J.K., Burger, C., Zuo, F. and Hsiao, B.S., Polymer, 2007, 48(15): 4511
Huang, L., Yang, W., Yang, B., Yang, M., Zheng, G. and An, H., Polymer, 2008, 49(19): 4051
Kimata, S., Sakurai, T., Nozue, Y., Kasahara, T., Yamaguchi, N., Karino, T., Shibayama, M. and Kornfield, J.A., Science, 2007, 316(5827): 1014
Mackley, M. and Keller, A., Polymer, 1973, 14(1): 16
Zhou, D., Yang, S.G., Lei, J., Hsiao, B.S. and Li, Z.M., Macromolecules, 2015, 48(18): 6652
Kida, T., Oku, T., Hiejima, Y. and Nitta, K.H., Polymer, 2015, 58: 88
Jiang, Z., Tang, Y., Men, Y., Enderle, H.F., Lilge, D., Roth, S.V., Gehrke, R. and Rieger, J., Macromolecules, 2007, 40(20): 7263
Tang, Y., Jiang, Z., Men, Y., An, L., Enderle, H.F., Lilge, D., Roth, S.V., Gehrke, R. and Rieger, J., Polymer, 2007, 48(17): 5125
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Zhao, Zh., Wang, Ff., Zhou, M. et al. Altering the hierarchical morphology distribution of injection molded polyethylene by the introduction of crosslink network and periodical shear. Chin J Polym Sci 34, 1479–1489 (2016). https://doi.org/10.1007/s10118-016-1865-6
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10118-016-1865-6