Recycling wood-plastic-composites

FIGURE 5.97 Effect of plastic type (polyethylene o, polypropylene A, polystyrene X) and wood loading levels on properties of wood plastic composites. (After Chelsea Center for Recycling and Economic Development (CCRED), 2000. Technical Report 19, An Investigation of the Potential to Expand the Manufacture of Recycled Wood Plastic Composite Products in Massachusetts, Univ. of Massachusetts, Massachusetts.)... 

In addition, ABS that has been recovered can be recycled into high value composites without separation from impurities. This has been exemplified with wood-plastic composites that contain ABS as matrix polymer. Both virgin ABS and recycled ABS were used and the properties of the materials were compared (126). In order to increase the performance, coupling agents were used, all based on grafted maleic anhydride. 

S.-K. Yeh, S. Agarwal, and R.K. Gupta, Wood-plastic composites formulated with virgin and recycled abs, Compos. Sci. Technol., 69(13) 2225-2230, October 2009. 

ADH08] Adhkary K.B., Pang S., Staiger M.P., Dimensional stability and mechanical behaviour of wood-plastic composites based on recycled and virgin high-density polyethylene (HOPE) , Composites B, vol. 39, pp. 807-815,2008. 

D.P. Kamdem et al., Properties of wood plastic composites made of recycled HOPE and wood flour from CCA-treated wood removed from service. Compos. Part A AppL Sci. Manuf. 35(3), 347-355 (2004)... 

Due to its low thermal stability, wood flour is usually used as filler only in plastics that are processed at temperatures lower than about 200 °C. The majority of wood-plastic composites use polyethylene as the matrix (Figure 15.2). This is, in part, due to that fact that much of the early wood-plastic composites were developed as an outlet for recycled film. Polypropylene is more commonly used in automotive applications, and polyethylene is more commonly used in exterior building applications. 

Chapter 5 discusses in detail the current application of recycled PET. In particular, the applications of recycled PET are discussed in the fields of food packaging, construction, textile industry, injection moulding and other manufacturing processes, wood-plastic composites and so on. On the other hand. Chapter 6 describes the optical properties of polyolefins upon recycling. Optical properties of different plastics play a key role in packaging applications, so this chapter primarily focuses on the different structural aspects and properties of isotactic polypropylene. 

Application of Recycled Polyethylene Terephthalate in Wood-Plastic Composites... 

Winandy, J.E., Stark, N.M., and Clemons, C.M. (2004) Considerations in recycling of wood-plastic composites. Proceedings of Global Wood and Natural Fibre Composites Symposium, Kassel, Germany, April 27-28, 2004. 

Najafi SK. Use of recycled plastics in wood plastic composites—a review. Waste Manag 2013 33 1898-905. Walther A, Matussek K, Muller AHE. Engineering nanostructured polymer blends with controlled nanoparticle location using Janus particles. ACS Nano 2008 2(6) 1167-78. 

S. Kazemi Najafi, Use of recycled plastics in wood plastic composites - A review. Waste Management 33 (9), 1898-905 (2013). 

Finally, wood fiber-plastic composites have ecological benefits they consist mainly of renewable raw materials and are recyclable. 

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