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Journal of Plastics Technology 2019/05

The effect of nanoparticle content and size on the morphology and crystallization behavior of poly(lactic acid)/silica nanocomposites

The effect of nanoparticle content and size on the morphology and crystallization behavior of poly(lactic acid)/silica nanocomposites

Poly(lactic acid) (PLA)/silica nanocomposites with different filler loading and two different primary particle size of the filler were prepared by using a twin-screw extruder followed by injection molding. Morphological investigations showed, depending on the filler size and filler content, good dispersion with average agglomerate sizes of 38-60 nm. The spherulite growth and crystallization behavior of the nanocomposites discovers that smaller particles and a low filler loading leads to the fastest crystallization. The behavior can be explained by the fact that the small agglomerates and individual particles, visible in a standard Scanning Electron Microscope (SEM) are most frequently in this case. These particles serve as heterogeneous nucleation agents finally resulting in a fast crystallization of the PLA nanocomposite.

Praphakorn Saiprasit, M.Sc.1 , Prof. Dr.-Ing. Alois K. Schlarb1,2,3
1 Chair of Composite Engineering (CCe), Technische Universität Kaiserslautern (TUK)
2 Research Center OPTIMAS, Technische Universität Kaiserslautern (TUK)
3 Qingdao University of Science & Technology (QUST)

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The Journal of Plastics Technology is a peer reviewed internet periodical published under the auspices of the Scientific Alliance of Polymer Technology (WAK)


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International Polymer Processing

International Polymer Processing, the journal of the Polymer Processing Society, is a discussion forum for the world-wide community of engineers and scientists in the field of polymer processing.

The journal covers research and industrial application in the very specific areas of designing polymer products, processes, processing machinery and equipment.


International Polymer Processing


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The Journal of Plastics Technology is indexed in SCOPUS, the largest abstract and citation database of peer-reviewed literature.