By: Haydar U. Zaman
In this study, the effects of two different compatibilizer types-maleated polypropylene and hexamethylenediamine modified maleated polypropylene-on the characteristics of a polypropylene/maleated polypropylene/organo-muscovite clay nanocomposite were investigated. By combining polypropylene with three different levels of organo-muscovite clay content, two distinct compatibilizers were used to make the nanocomposites, each with a fixed amount of 10 weight percent. The compatibilizer’s effects on the morphological, mechanical, thermal, and rheological characteristics of nanocomposites were then examined. Photomicrographs obtained with transmission electron microscopy (TEM) demonstrated that organo-muscovite clay was partially exfoliated during melt mixing and intercalated in the presence of maleated polypropylene or hexamethylenediamine modified maleated
polypropylene. Furthermore, SEM demonstrated that the polypropylene matrix’s extensive plastic deformation also had a role in the polypropylene nanocomposite’s increased strength. Compared to maleated polypropylene, hexamethylenediamine modified maleated polypropylene showed superior organo-muscovite clay dispersion and exfoliation. In comparison to the polypropylene/maleated polypropylene/organo-muscovite clay system and the maleated polypropylene compatibilized case, the hexamethylenediamine modified maleated polypropylene compatibilized system offered better strength, modulus, hardness,and decreased elongation at break. Compatibilizers containing organo-muscovite clay improve the nanocomposite’s tensile properties, thermal stability, heat deflection temperature, melting and crystallization temperature, crystallinity, and rheological behaviors. Compatibilizers also impose strong interfacial interactions on these properties.
Keywords: Polypropylene, organo-muscovite clay, nanocomposites, compatibilizers,
mechanical properties, crystallization, rheological behaviors
Citation:
Refrences:
1. Wen X, Min J, Tan H, Gao D et al. Reactive construction of catalytic carbonization system in PP/C 60 /Ni (OH) 2 nanocomposites for simultaneously improving thermal stability, flame retardancy and mechanical properties. Compos Part A: Appl Sci Manuf. 2020; 129: 105722 .
2. Zaman HU, Hun PD, Khan RAYoon K-B. Comparison of effect of surface-modified micro-/nano-mineral fillers filling in the polypropylene matrix. J Thermopl Compos Mater. 2013; 26 (8): 1100-1113.
3. Bai R, Zhu H, Xie D, Zhu Z et al. Microwave loss percolation effect and microwave self- healing function of FeNip/PP nanocomposites. Compos Sci Technol. 2019; 182: 107745.
4. Zaman HU, Hun PD, Khan RAYoon K-B. Morphology, mechanical, and crystallization behaviors of micro-and nano-ZnO filled polypropylene composites. J Reinf Plast Compos. 2012; 31 (5): 323-329.
5. Raji M, Mekhzoum MEM, Rodrigue DBouhfid R. Effect of silane functionalization on properties of polypropylene/clay nanocomposites. Compos Part B: Eng. 2018; 146: 106- 115.
6. Yuan W, Guo M, Miao ZLiu Y. Influence of maleic anhydride grafted polypropylene on the dispersion of clay in polypropylene/clay nanocomposites. Polym J. 2010; 42 (9): 745- 751.
7. Hammami I, Hammami H, Soulestin J, Arous M et al. Thermal and dielectric behavior of polyamide-6/clay nanocomposites. Mater Chem Phys. 2019; 232: 99-108.
8. Tan H, Wang L, Wen X, Deng L et al. Insight into the influence of polymer topological structure on the exfoliation of clay in polystyrene matrix via annealing process. Appl Clay Sci. 2020; 194: 105708.
9. Kodali D, Uddin M-J, Moura EARangari VK. Mechanical and thermal properties of modified Georgian and Brazilian clay infused biobased epoxy nanocomposites. Mater Chem Phys. 2021; 257: 123821.
10. Irandoost M, Pezeshki-Modaress MJavanbakht V. Removal of lead from aqueous solution with nanofibrous nanocomposite of polycaprolactone adsorbent modified by nanoclay and nanozeolite. J Water Proc Eng. 2019; 32: 100981.
11. López-Quintanilla M, Sánchez-Valdés S, Ramos de Valle LMedellÃn-RodrÃguez F. Effect of some compatibilizing agents on clay dispersion of polypropylene-clay nanocomposites. J Appl Polym Sci. 2006; 100 (6): 4748-4756.
12. Casalini T, Rossi F, Santoro MPerale G. Structural characterization of poly-l-lactic acid (PLLA) and poly (glycolic acid)(PGA) oligomers. Intern J Molecul Sci. 2011; 12 (6): 3857-3870.
13. Bunekar N, Tsai T-Y, Huang J-YChen S-J. Investigation of thermal, mechanical and gas barrier properties of polypropylene-modified clay nanocomposites by micro- compounding process. J Taiwan Instit Chem Eng. 2018; 88: 252-260.
14. Wu M-H, Wang C-CChen C-Y. Preparation of high melt strength polypropylene by addition of an ionically modified polypropylene. Polym. 2020; 202: 122743.
15. Chen WC, Lai SMChen CM. Preparation and properties of styrene–ethylene–butylene–styrene block copolymer/clay nanocomposites: I. Effect of clay content and compatibilizer types. Polym Intern. 2008; 57 (3): 515-522.
16. Százdi L, Pukánszky Jr B, Vancso GJPukánszky B. Quantitative estimation of the reinforcing effect of layered silicates in PP nanocomposites. Polym. 2006; 47 (13): 4638-
4648.
17. Varghese SKarger-Kocsis J. Natural rubber-based nanocomposites by latex compounding with layered silicates. Polym. 2003; 44 (17): 4921-4927.
18. Zhong W, Qiao X, Sun K, Zhang G et al. Polypropylene-clay blends compatibilized with MAH-g-POE. J Appl Polym Sci. 2006; 99 (5): 2558-2564.
