Polymers with benzene rings have the potential to act as macromolecular β-nucleating agents and rigid organic particles for isotactic polypropylene (iPP). The dispersibility in iPP matrix is a key factor for their β-nucleating efficiency and mechanically strengthening ability. In this paper, comb-like branched polystyrenes (cPSs) with different side chain lengths were introduced into iPP. The effect of entanglement upon branching on dispersibility, β-nucleating and mechanically strengthening ability of PS in iPP was investigated in detail. Compared with the linear polystyrene with the same length of backbone, the incorporation of side chains intensifies the entanglement between cPS chains, not facilitating their dispersion in iPP matrix. However, short side chains (chain length lower than the critical chain entanglement molecular weight of PS) facilitate the interdiffusion between the cPS and iPP chains and ultimately lead to favorable dispersibility and high β-nucleating efficiency, as well as prominent toughening and reinforcing effect on iPP.
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Li Z, Shi YJ, Sun CX, Zhang Q, Fu Q (2015) In situ micro and nano fibrillar reinforced elastomer composites based on polypropylene (PP)/olefinic block copolymer (OBC). Compos Sci Technol 115:34–42
Chen C, Zhang Z, Ding Q, Wang C, Mai K (2015) Influence of different β-nucleating agent on crystallization behavior, morphology, and melting characteristic of multiwalled carbon nanotube-filled isotactic polypropylene nanocomposites. Polym Compos 36:635–643
Papageorgiou DG, Chrissafis K, Bikiaris DN (2015) β-Nucleated polypropylene: processing, properties and nanocomposites. Polym Rev 55:596–629
Stocker W, Schumacher M, Graff S, Thierry A, Wittmann JC, Lotz B (1998) Epitaxial crystallization and AFM investigation of a frustrated polymer structure: isotactic poly (propylene), β phase. Macromolecules 31:807–814
Yue Y, Hu D, Zhang Q, Lin J, Feng J (2018) The effect of structure evolution upon heat treatment on the beta-nucleating ability of calcium pimelate in isotactic polypropylene. Polymer 149:55–64
Varga J, Menyhard A (2007) Effect of solubility and nucleating duality of N, N'-dicyclohexyl-2,6-naphthalenedicarboxamide on the supermolecular structure of isotactic polypropylene. Macromolecules 40:2422–2431
Su ZQ, Dong M, Guo ZX, Yu J (2007) Study of polystyrene and acrylonitrile-styrene copolymer as special β-nucleating agents to induce the crystallization of isotactic polypropylene. Macromolecules 40:4217–4224
Liu JR, Li C, Hu FM (2018) Effect of polystyrenes with different architectures on the β-nucleating efficiency and toughening of isotactic polypropylene. Polym Int 67:506–514
Phillips A, Zhu PW, Edward G (2010) Polystyrene as a versatile nucleating agent for polypropylene. Polymer 51:1599–1607
Su ZQ, Chen XN, Yu ZZ, Zhang L (2009) Morphological distribution of polymeric nucleating agents in injection-molded isotactic polypropylene plates and its influence on nucleating efficiency. J Appl Polym Sci 111:786–793
Shu Q, Zou X, Dai W, Fu Z (2012) Formation of β-iPP in isotactic polypropylene/acrylonitrile-butadiene-styrene blends: effect of resin type, phase composition, and thermal condition. J Macromol Sci Part B 51:756–766
Liu JR, Zhu XX (2019) Isotactic polypropylene toughened with poly(acrylonitrile-butadiene-styrene): compatibilizing role of maleic anhydride grafted polypropylene. Polym Eng Sci 52:E317–326
Yang R, Ding L, Chen WL, Chen L, Zhang X, Li JC (2017) Chain folding in main-chain liquid crystalline polyester with strong π–π interaction: an efficient β-nucleating agent for isotactic polypropylene. Macromolecules 50:1610–1617
Zhang Z, Chen C, Wang C, Zhang J, Mai K (2010) A novel highly efficient β-nucleating agent for polypropylene using nano-CaCO3 as a support. Polym Int 59:1199–1204
Yi QF, Wen XJ, Dong JY, Han CC (2008) A novel effective way of comprising a β-nucleating agent in isotactic polypropylene (i-PP): polymerized dispersion and polymer characterization. Polymer 49:5053–5063
Wang N, Niu H, Li Y (2017) A novel catalytic way of comprising a β-nucleating agent in isotactic polypropylene: catalyst design strategy and polymerization-assisted dispersion. Polymer 113:259–266
Niu H, Wang N, Li Y (2018) Influence of β-nucleating agent dispersion on the crystallization behavior of isotactic polypropylene. Polymer 150:371–379
Zhao S, Qin W, Xin Z, Zhou S, Gong H, Ni Y, Zhang K (2018) In situ generation of a self-dispersed β-nucleating agent with increased nucleation efficiency in isotactic polypropylene. Polymer 151:84–91
Qin W, Xin Z, Pan C, Sun S, Jiang X, Zhao S (2019) In situ formation of zinc phthalate as a highly dispersed β-nucleating agent for mechanically strengthened isotactic polypropylene. Chem Eng J 358:1243–1252
Liu JR, Liu YX (2017) Chain entanglement and relaxation behavior of three-arm star-shaped polystyrene. Polym Mater Sci Eng 33:65–69
Liu JR, Liu YX (2018) Relaxation behavior of motion units for comb-like branched polystyrene. Polym Mater Sci Eng 34:45–49
Namba SI, Tsukahara Y, Kaeriyama K, Okamoto K, Takahashi M (2000) Bulk properties of multibranched polystyrenes from polystyrene macromonomers: rheological behavior I. Polymer 41:5165–5171
Inkson NJ, Graham RS, McLeish TCB, Groves DJ, Fernyhough CM (2006) Viscoelasticity of monodisperse comb polymer melts. Macromolecules 39:4217–4227
Vosloo JJ, van Zyl AJ, Nicholson TM, Sanderson RD, Gilbert RG (2007) Thermal and viscoelastic structure-property relationships of model comb-like poly (n-butyl methacrylate). Polymer 48:205–219
Kirkwood KM, Leal LG, Vlassopoulos D, Driva P, Hadjichristidis N (2009) Stress relaxation of comb polymers with short branches. Macromolecules 42:9592–9608
Vega J, Aguilar M, Peón J, Pastor D, Martínez-Salazar J (2013) Effect of long chain branching on linear-viscoelastic melt properties of polyolefins. e-Polymers 2:624–658
Doi M, Edwards SF (1979) Dynamics of concentrated polymer systems. Part 4.-Rheological properties. J Chem Soc Faraday 2 Trans Mol Chem Phys 75:38–54
Varga J (2002) β-modification of isotactic polypropylene: preparation, structure, processing, properties, and application. J Macromol Sci Part B 41:1121–1171
Jones AT, Aizlewood JM, Beckett DR (1964) Crystalline forms of isotactic polypropylene. Die Makromol Chem 75:134–158
This work was financially supported by the project funded by the Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions.
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Liu, J., Zhu, T. Effect of entanglement upon branching on dispersibility, β-nucleating and mechanically strengthening ability of polystyrene in isotactic polypropylene. Polym. Bull. (2020). https://doi.org/10.1007/s00289-020-03259-4
- Isotactic polypropylene (iPP)
- Polystyrene (PS)
- Comb-like branched
- β-Nucleating efficiency