Abstract
Sugar beet pulp (SBP), the residue from sugar extraction, was compounded and turned into in situ thermoplastic composite materials. The compounding was performed using a common twin- screw compounding extruder and water and glycerol were used as co-plasticizers. The melt compounding of SBP utilized the water-soluble characteristics of pectin which is one of main components of SBP. The structure of SBP was destroyed under extrusion and pectin was partially released and plasticized by water and glycerol. Scanning electron microscopy revealed that the cellulose microfibrils were dispersed in the matrix of pectin and other ingredients. Effects of the water and glycerol co-plasticizers on rheological, tensile and dynamic mechanical properties of the SBP plastics were investigated. Effects of relative humidity of the environment on the tensile and dynamical mechanical properties of the neat SBP compounds were also evaluated. The results demonstrated that SBP could be processed as a plastic with water and glycerol as co-plasticizers using traditional processing equipments.
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Acknowledgments
The authors are grateful for financial support from the Agricultural Research Service of the United States Department of Agriculture, specific cooperative project #58-1935-9-965.
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Liu, B., Zhang, J., Liu, L. et al. Preparation and Properties of Water and Glycerol-plasticized Sugar Beet Pulp Plastics. J Polym Environ 19, 559–567 (2011). https://doi.org/10.1007/s10924-011-0322-4
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DOI: https://doi.org/10.1007/s10924-011-0322-4