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- W4232459691 abstract "Biodegradable polycaprolactone (PCL) was melt-compounded in a Werner & Pfleiderer twin-screw extruder (ZSK25) together with wood flour (WF) and lignin with maleic anhydride-grafted polycaprolactone (PCL-g-MA) used as a compatibilizer. The grafting of maleic anhydride onto PCL was achieved with reactive extrusion in the presence of 2,5-dimethyl-2,5-di-(t-butylperoxy)hexane as an initiator. The graft copolymers were analyzed with size exclusion chromatography and titration. As a function of the initiator and maleic anhydride addition, the grafted maleic anhydride content varied from 1.4 to 3.1 wt %. Compounds compatibilized with PCL-g-MA exhibited improved mechanical properties: a compatibilized PCL compound containing 40 wt % WF gave a Young's modulus of 2300 MPa with respect to 400 MPa for neat PCL and a 100% increase in yield stress. The content of WF, lignin, and PCL-g-MA was varied systematically to examine stress–strain and impact behavior. Low contents of grafted maleic anhydride and PCL-g-MA were required to improve both mechanical properties and interfacial adhesion. Biodegradation was investigated. Lignin addition was found to retard biodegradation. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 81: 1972–1984, 2001" @default.
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- W4232459691 date "2001-08-22" @default.
- W4232459691 modified "2023-10-14" @default.
- W4232459691 title "Reactive extrusion of polycaprolactone compounds containing wood flour and lignin" @default.
- W4232459691 doi "https://doi.org/10.1002/app.1628.abs" @default.
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