Polypropylene structure

Venture Industries is patenting Sandwiform glass-reinforced polypropylene structural sandwich material. Panels with decorative skins are formed in a one-step, thermo-compression process for trunk elements. 

I believe we are just on the threshold of the C-13 NMR applications in studies of poljnner chemistry. Detailed structures are available for correlations with physical properties. Differences in configurational structure produced by various catalysts can be accurately determined. For eiample, the "irregularities" in crystalline polypropylene structure have been shown to be... 

Figure 5.74 Skin-core morphology of an injection-molded polypropylene structural foam. Reprinted, by permission, from P. R. Hornsby, in Two-Phase Polymer Systems, L. A. Utracki, ed., p. 102. Copyright 1991 by Carl Hanser Verlag.

Monasse B, Haudin JM (1995) In Karger-Kocis J (ed) Polypropylene structure, blends and composites, vol 1. Chapman HaU, London, p 5... 

Janeschitz-Kriegel H, Fleischman E, Geymayer W (1995) Processing-induced structure formation. In Karger-Kocsis J (ed) Polypropylene structure,blends and composites, vol 1. Chapman Hall, London, chap 10, p 295 Fujiyama M, Wakino T (1991) J Appl Polym Sci 43 97 Fujiyama M, Wakino T (1991) J Appl Polym Sci 42 9 Fyjiyama M, Wakino T (1991) J Appl Polym Sci 43 57 Kolarik J, Lednicky F, Jancar J.Pukanszky B (1990) Polym Commun 31 201 Kolarik J, Jancar J (1992) Polymer 33 4961... 

Pukanszky B (1995) In Karger-Kocsis J (ed) Polypropylene. Structure, Blends and Composites, vol 3. Chapman and Hall, London, p 1... 

Figure 3.15 Polypropylene structures, (a) Type I open cell structure formed at low cooling rates, (b) Type II fine structure formed at high cooling rates [37]. Reprinted with permission from W.C. Hiatt, G.H. Vitzthum, K.B. Wagener, K. Gerlach and C. Josefiak, Microporous Membranes via Upper Critical Temperature Phase Separation, in Materials Science of Synthetic Membranes, D.R. Lloyd (ed.), ACS Symposium Series Number 269, Washington, DC. Copyright 1985, American Chemical Society and American Pharmaceutical Association...

Marosi, G., Bertalan, G., Anna, P., and Rusznak, I. 1993. Elastomer interphase in particle filled polypropylene, structure, formation and mechanical characteristics. Journal of Polymer Engineering 12 34—61. 

Ewen, J.A. Elder, M.J. Jones, R.L. Haspeslagh, L. Atwood, J.L. Bott, S.G. Robinson, K. Metallocene/polypropylene structural relationships implications on polymerization and stereochemical control mechanisms. Macromol. Symp. 1991, 48, 253. 

Polypropylene Structure, Blends and Composites. Vol. 2. Copolymers and Blends Karger-Kocsis, J., Ed. Chapman Hall London, 1995. 

A. Galeski, in Polypropylene Structure, Blends and Composites, 1, Structure and Morphology, edited by J. Karger-Kocsis, Chapman Hall, London (1995), Chapter 4. 

J. Karger-Kocsis (ed.). Polypropylene Structure, Blends, and Composites, Chapman and Hall, 1995. 

A variety of foams can be produced from various types of polyethylenes and cross-linked systems having a very wide range of physical properties, and foams can be tailor-made to a specific application. Polypropylene has a higher thermostability than polyethylene. The production volume of polyolefin foams is not as high as that of polystyrene, polyurethane, or PVC foams. This is due to the higher cost of production and some technical difficulties in the production of polyolefin foams. The structural foam injection molding process, described previously for polystyrene, is also used for polyethylene and polypropylene structural foams (see Figure 2.61). 

J. Karger-Kocsis, Polypropylene Structure, blends and Composites, vol 1, 2, 3. (Springer Science Business Media, 1995)... 

Karger-Kocsis J. (1995) Polypropylene structure and morphology. Chapanan and Hall, Cambridge. 

Thermal Oxidation of Polypropylene and Modified Polypropylene - Structure Effects... 

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