Effect of polyhedral oligomeric silsesquioxane and sorbitol on properties of isotactic polypropylene

Abstract

Isotactic polypropylene(iPP) was modified by the introduction of polyhedral oligomeric silsesquioxanes(POSS) and 1,3:2,4-bis(3,4-dimethylbenzylidene)sorbitol(DMDBS). Chemical combination of (3-mercapto)-propyl-heptaisobutyl POSS with DMDBS(POSS-DMDBS), and physical mixing of DMDBS with octaisobutyl POSS (iso-POSS/DMDBS) or trisilanolisobutyl POSS(tri-POSS/DMDBS) were applied respectively to modifying iPP, and the effects of POSS and DMDBS on crystallization, rheological and mechanical properties of iPP were systematically investigated. The results indicate that iso-POSS/DMDBS and tri-POSS/DMDBS were more effective than POSS-DMDBS on the improvement of the crystallization behavior of iPP due to the higher crystallization temperature, while the crystallinity of iPP containing POSS-DMDBS was enhanced, approximately approached to that of iPP containing tri-POSS/DMDBS. The tensile strength of iPP with POSS-DMDBS was significantly increased from 34 MPa to 40 MPa, as high as that of iPP with iso-POSS/DMDBS. The different effects caused by the specific interaction between POSS and DMDBS could possibly be applied in the modification of iPP.

Keywords

Isotactic polypropylene / Polyhedral oligomeric silsesquioxane / Sorbitol

References

[1] Yi Q F, Wen X J, Niu H, Dong J Y. J. Appl. Polym. Sci., 2013, 127(2): 888.

[2] Kristiansen M, Werner M, Tervoort T, Smith P. Macromolecules, 2003, 36(14): 5150.

[3] Fillon B, Lotz B, Thierry A, Wittmann J C. J. Polym. Sci., Part B: Polym. Phys., 1993, 31(10): 1395.

[4] Blomenhofer M, Ganzleben S, Hanft D, Schmidt H W. Macromolecules, 2005, 38(9): 3688.

[5] Zhang W, Müller A H E. Prog. Polym. Sci., 2013, 38(8): 1121.

[6] Ayandele E, Sarkar B, Alexandridis P. Nanomaterials, 2012, 2(4): 445.

[7] Zhou Z Y, Cui L M, Zhang Y, Zhang Y X, Yin N W. J. Polym. Sci. Pol. Phys., 2008, 46(17): 1762.

[8] Grala M, Bartczak Z, Pracella M. Polym. Compos., 2013, 34(6): 929.

[9] Roy S, Scionti V, Jana S C, Wesdemiotis C, Pischera A M, Espe M P. Macromolecules, 2011, 44(20): 8064.

[10] Roy S, Lee B J, Kakish Z M, Jana S C. Macromolecules, 2012, 45(5): 2420.

[11] Roy S, Feng J, Scionti V, Jana S C, Wesdemiotis C. Polymer, 2012, 53(8): 1711.

[12] Alves F, Scholder P, Nischang I. ACS Appl. Mater. Interfaces, 2013, 5(7): 2517.

[13] Truong L T, Larsen A, Holme B, Roots J. J. Appl. Polym. Sci., 2012, 126(4): 1198.

[14] Perilla J E, Lee B J, Jana S C. J. Rheol., 2010, 54(4): 761.

[15] Lipp J, Shuster M, Terry A E, Cohen Y. Langmuir, 2006, 22(14): 6398.

[16] Marco C, Ellis G, Gomez M A, Arribas J M. J. Appl. Polym. Sci., 2003, 88(9): 2261.

[17] Han L, Wang Y, Liu L, Xiang F M, Huang T, Zhou Z W. Chinese J. Polym. Sci., 2010, 28(4): 457.

[18] Chen J H, Yao B X, Su W B, Yang Y B. Polymer, 2013, 48(6): 1756.

[19] Gao J G, Cao X X, Zhang C, Hu W T. Polym. Bull., 2013, 70(7): 1977.