Browse > Article
http://dx.doi.org/10.14478/ace.2013.1037

Effect of Styrene and Maleic Anhydride Content on Properties of PP/Pulp Composites and Reactive Extrusion of Random PP  

Lee, Jong Won (Major in Polymer Science and Engineering, Kongju National University)
Kim, Ji Hyun (Major in Polymer Science and Engineering, Kongju National University)
Kim, Youn Cheol (Major in Polymer Science and Engineering, Kongju National University)
Publication Information
Applied Chemistry for Engineering / v.25, no.3, 2014 , pp. 318-323 More about this Journal
Abstract
In order to analyze the effect of maleic anhydride (MAH) content and styrene monomer (SM)/MAH mole ratio on reactive extrusion of maleic anhydride grafted random polypropylenes (MAH-g-rPP), MAH-g-rPPs were prepared by using a twin screw extruder. MAH contents were 0.5, 1.0, 3.0, and 5.0 phr and SM/initiator mole ratio was 0.0, 1.0, and 2.0. Dicumyl peroxide (DCP) was used as an initiator. The graft degree of MAH was confirmed by the existence of carbonyl group (C = O) stretching peak at $1700cm^{-1}$ from FT-IR spectrum. The degree of graft reaction increased up to 3.0 phr MAH and showed the optimum value at 1.0 SM/MAH mole ratio from the area ratio of C = O and C-H stretching peak. Thermal and crystallization properties of MAH-g-rPP and PP/MAH-g-rPP/pulp composites were investigated by DSC, TGA, XRD, and POM. There was a decrease in non-isothermal crystallization temperature of PP/MAH-g-PP/pulp composites. Based on tensile properties and SEM pictures for the fractured surface of PP/MAH-g-PP/pulp composites, MAH content of 1.0 wt% and SM/MAH mole ratio of 1.0 were the optimum formulation as the compatibilizer. The rheological properties of the composites were measured by dynamic Rheometer to compare the processability of the composites with and without compatibilizer. The power law index showed slightly low value at the composites with compatibilizer.
Keywords
polypropylene; pulp; maleic anhydride; reaction extrusion;
Citations & Related Records
연도 인용수 순위
  • Reference
1 J. A. Mendez, F. Vilaseca, M. A. Pelach, J. P. Lopez, L. Barbera, X. Turon, J. Girones, and P. Mutje, Evaluation of the Reinforcing Effect of Ground Wood Pulp in the Preparation of Polypropylene-Based Composites Coupled with Maleic Anhydride Grafted Polypropylene, J. Appl. Polym. Sci., 105, 3588-3596 (2007).   DOI   ScienceOn
2 S. Lee, J. K. Kim, Y. G. Son, Evaluation of polypropylene grafted with maleicanhydride and styrene as a compatibilizer for polypropylene/ clay nanocomposites, Polym. Bull., 68, 541-551 (2012).   DOI
3 T. A. Bullions, R. A. Gillespie, J. Price-O'Brien, and A. C. Loos, The Effect of Maleic Anhydride Modified Polypropylene on the Mechanical Properties of Feather Fiber, Kraft Pulp, Polypropylene Composites, J. Appl. Polym. Sci., 92, 3771-3783 (2004).   DOI   ScienceOn
4 Y. Li, X. M. Xie, and B. H. Guo, Study on styrene-assisted melt free-radical grafting of maleic anhydride onto polypropylene, Polymer, 24, 3419-3425 (2000).
5 Y. An, Z. Zhang, Y. Wang, J. Qiu, and T. Tang, Structure and properties of high melt strength polypropylene prepared by combined method of blending and crosslinking, J. Appl. Polym. Sci., 116, 1739-1746 (2010).
6 A. K. Gupta, S. K. Rana, and B. L. Deopura, Crystallization Behavior of High-Density Polyethylene/Linear Low-Density Polyethylene Blend, J. Appl. Polym. Sci., 44, 719-726 (1992).   DOI
7 S. Li, M. Xiao, D. Wei, H. Xiao, F. Hu, and A. Zheng, The melt grafting prepatation and rheological characterizaion of long chain branching polypropylene, Polymer, 50, 6121-6128 (2009).   DOI   ScienceOn
8 B. M. Cho, Chemical modification of cellulose pulp fiber for functional paper making, Appl. Chem. Eng., 12, 467-474 (2001).
9 A. Thumm and Alan R. Dickson, The influence of fibre length and damage on the mechanical performance of polypropylene/wood pulp composites, Composites : Part A., 46, 45-52 (2013).   DOI   ScienceOn
10 A. Awal, S. B. Ghosh, and M. Sain, Thermal properties and spectral characterization of wood pulp reinforced bio-composites fibers, J. Therm. Anal. Calorim., 99, 695-701 (2010).   DOI
11 B. G. Lee, S. Lee, and B. K. Via, Influence of Surface Morphology of the Kraft Pulp Fibers on the Growth of the Transcrystalline Layer of Polypropylene, J. Appl. Polym. Sci., 116, 1958-966 (2008).
12 A. Serrano, F. X. Expinach, F. Julian, R. Del Rey, J. A. Mendez, and P. Mutje, Estimation of the interfacial shears strength, orientation factor and mean equivalen intrinsic tensile strength in old newspaper fiber/polypropylene composites, Composites : Part B., 50, 232-238 (2013)   DOI   ScienceOn