Polypropylene reinforcements

Figure 7.18 shows how crystalline structure is affected by the presence of fiber. Here, bamboo fiber was used for polypropylene reinforcement. A nucleation occurs on the surfaces of fiber. Spherulites grow from the fiber surface. Such growth results in transcrystallinity. The maleation of polypropylene increases interaction because of reactivity with OH groups on the fiber surface. This organization contributes to the reinforcement. 

Ljungberg, N., Cavaille, J. Y., and Heux, L. (2006). Nanocomposites of isotactic polypropylene reinforced with rod-like cellulose whiskers. Polymer. 47,6285-6292. 

M. Dewidar, M. Bakrey, A.M. Hashim, A. Abdel-Haleem, Kh Diab, Mechanical properties of polypropylene reinforced hemp fiber composite. Mater. Phys. Mech. 15, 119-125 (2012)... 

Morgan, D.R. (1991). Freeze Thaw Durability of Steel and Polypropylene Reinforced Shotcretes a Review. Durability of Concrete. Second International Conference, held in Montreal, Canada Ed. by V.M. Malhotra American Concrete Institute, Detroit, MI, Vol. 2, pp. 901-918. (ACISP-126). 

Acoustic properties of the polypropylene reinforced with lignocellulosic... 

Comalloy 110 Polypropylenes reinforced or not, PP Comalloy IntL Crap. 

Ljungberg N, Cavaille J-Y, Heux L (2006) Nanocomposites of isotactic polypropylene reinforced with rod-like cellulose whiskers. Polymer 47 6285-6292 Lu Y, Weng L, Cao X (2005) Biocomposites of plasticized starch reinforced with cellulose crystallites from cottonseed linter. Macromol Biosci 5 1101-1107 Lu J, Wang T, Drzal LT (2008) Preparation and properties of microfibrillated cellulose polyvinyl alcohol composite materials. Compos Part A 39A 738-746 Magalhaes WLE, Cao X, Lucia LA (2009) Cellulose nanocrystals/cellulose core-in-shell nanocomposite assemblies. Langmuir. doi 10.1021Aa901928j Malainine ME, Mahrouz M, Dufresne A (2005) Thermoplastic nanocomposites based on cellulose microfibrils from Opuntiaficus-indica parenchyma cell. Compos Sci Technol 65 1520-1526 Marchessault RH, Sundararajan PR (1983) Cellulose. In Aspinall GO (ed) The polysaccharides. Academic, New York... 

Karmaker AC, Youngquist JA (1996) Injection molding of polypropylene reinforced with short jute fibers. J Appl Polym Sci 62 1147-1151... 

A. Shakeri, and A. Ghasemian, Water absorption and thickness swelhng behavior of polypropylene reinforced with hybrid recycled newspaper and glass fiber. Appl. Compos. Mater. 17,183-193 (2010). 

E.E Cerqueira, C.A.R.P. Baptista and D.R. Muhnari, Mechanical behaviour of polypropylene reinforced sugarcane bagasse fibers composites. Proced. Eng. 10,2046-2205 (2011). 

Table 14.7 Surface-Modified Phlogopite Mica vs. Other Minerals for Polypropylene Reinforcement...

Mechanical properties were determined for composites produced with the four preform layers evenly spaced across the final composite cross sections. Mechanical properties and densities are provided in Table I for neat polypropylene and for composites with VB contents of approximately 10, 20, and 30 wt.%. The tensile and flexural properties increased with increasing VB content, and a ten-fold increase in tensile modulus relative to neat polypropylene was noted for a composite with 31.5 wt.% VB reinforcement which possessed a tensile modulus of 10.3 GPa. Polypropylene reinforced with 30 wt.% random fiberglass mat is reported to have a tensile modulus of 4.62 GPa and a tensile strength of 82.8 MPa (17). In order to... 

The model has been adopted to investigate the problem of hot spot formation in an inhomogeneous dispersed polymer-polymer material (Figure 2.12). It was examined to see if a hot spot in the bottom (coil-close) region of a HDPE matrix material affects a melting of the 30 vol% polypropylene reinforcement. The fiber diameter has been chosen as 1 mm. The hot spot was initiated by three coil-close particles, whereas the other particles were randomly distributed within the whole sample. 

Mashima, M., Hannant, D. J., Keei J. G. (1990) Tensile properties of polypropylene reinforced cement with different fiber orientation , American Concrete Institute Materials Journal, 87(2) 172-8. 

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