New polypropylene/triticale composites: Relationship between formulation and properties

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Proceedings titleAnnual Technical Conference - ANTEC, Conference Proceedings
Conference69th Annual Technical Conference of the Society of Plastics Engineers 2011, ANTEC 2011, 1 May 2011 through 5 May 2011, Boston, MA
Pages10591064; # of pages: 6
SubjectCaO; Composite strength; Fiber-matrix interfaces; Maleic anhydride grafted polypropylene; Morphological observations; PP matrix; Processing procedures; Reactive agent; Rriticale; Thermal and mechanical properties; Thermoplastic composite; Twin screw extrusion; Coupling agents; Elastomers; Engineers; Extrusion molding; Injection molding; Maleic anhydride; Plastic products; Polypropylenes; Professional aspects; Reinforcement; Spinning (fibers); Tensile strength; Thermoplastics; Viscosity; Mechanical properties
AbstractThis paper discusses the relationship between formulation and properties of polypropylene/triticale straw composites. The composites were prepared by twin-screw extrusion process followed by injection molding with different rriticale content from 10 to 40 vol% in the PP matrix in the presence of 3.75 vol% of maleic anhydride grafted polypropylene (PP-g-MA) as coupling agent. Composites with CaO as reactive agent were also prepared. The composites were characterized in terms of morphology, as well as microstructure, rheology, thermal and mechanical properties (tensile, fiexural and impact). The flammability behavior of composites was also evaluated. Morphological observations show a good dispersion of rriticale in polypropylene and a good polymer/fiber adhesion due to the presence of coupling and reactive agent. Composite viscosity and mechanical properties were increased with rriticale content. The tensile strength was increased accordingly with rriticale content. The reactive additive (CaO) provides superior strength and modulus and upgrades the rriticale from regular filler to reinforcement categories. The observed improvements in composite strength can be interpreted by the enhancement of the fiber-matrix interface due to the presence of the reactive additive. The results demonstrate that rriticale fibers are a good reinforcement with a great potential in thermoplastic composites field if the processing procedure and formulation are appropriate.
Publication date
AffiliationNational Research Council Canada (NRC-CNRC); NRC Industrial Materials Institute (IMI-IMI)
Peer reviewedYes
NPARC number21271050
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Record identifierb69166c7-d9be-4918-939f-5df937fe056f
Record created2014-03-24
Record modified2016-05-09
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