The structure and composition of a biobased polymer blend with wood like appearance was studied. The effects of processing time for mixing at 190 °C was investigated. The structure of the blend was unveiled combining fractionation techniques with size exclusion chromatography and nuclear magnetic resonance analysis. The material was found to be a blend of polylactide (PLA) polymer with 15.4 wt% ground softwood and 5 wt% soda lignin. The findings about composition supported the explanation of the thermal behavior and the processing stability analysis. The blend showed tensile properties degradation after mixing at 190 °C for 25 min. The ultimate tensile strength dropped from 29.75 to 4.85
Titolo: | Investigation on Structure and Thermomechanical Processing of Biobased Polymer Blends | |
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Data di pubblicazione: | 2016 | |
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Handle: | http://hdl.handle.net/20.500.11769/20299 | |
Appare nelle tipologie: | 1.1 Articolo in rivista |