Processing of wood plastic composites: The influence of feeding method and polymer melt flow rate on particle degradation. Teuber, L, Militz, H, & Krause, A Journal of Applied Polymer Science, 133(13):1–9, April, 2016.
Processing of wood plastic composites: The influence of feeding method and polymer melt flow rate on particle degradation [link]Paper  doi  abstract   bibtex   
Spruce wood particle (WP)/polypropylene (PP) compounds were prepared in an internal mixer using different rotor speeds. To analyze the effect of feeding method on particle degradation, WP and PP were either fed as dry-blend or WP was fed into the PP melt. To prevent melt freezing, pre-heated WP were used as comparison to cold WP. In addition, WPs were compounded with different grades of PP or high-density polyethylene (HDPE) to analyze the effect of polymer matrix melt flow rate (MFR) on particle degradation. Mixing behavior of compounds containing 30% and 70% (w/w) WP depended on feeding method, represented by a changing relation of final torque values. Feeding as dry-blend and using pre-heated particles led to stronger WP degradation. Degradation decreased with increasing polymer MFR. For PP compounds, particle degradation was stronger when containing 70% WP, for HDPE the difference due to WP content was only marginal.
@article{teuber_processing_2016,
	title = {Processing of wood plastic composites: {The} influence of feeding method and polymer melt flow rate on particle degradation},
	volume = {133},
	issn = {1097-4628},
	shorttitle = {Processing of wood plastic composites},
	url = {http://onlinelibrary.wiley.com/doi/10.1002/app.43231/abstract},
	doi = {10.1002/app.43231},
	abstract = {Spruce wood particle (WP)/polypropylene (PP) compounds were prepared in an internal mixer using different rotor speeds. To analyze the effect of feeding method on particle degradation, WP and PP were either fed as dry-blend or WP was fed into the PP melt. To prevent melt freezing, pre-heated WP were used as comparison to cold WP. In addition, WPs were compounded with different grades of PP or high-density polyethylene (HDPE) to analyze the effect of polymer matrix melt flow rate (MFR) on particle degradation. Mixing behavior of compounds containing 30\% and 70\% (w/w) WP depended on feeding method, represented by a changing relation of final torque values. Feeding as dry-blend and using pre-heated particles led to stronger WP degradation. Degradation decreased with increasing polymer MFR. For PP compounds, particle degradation was stronger when containing 70\% WP, for HDPE the difference due to WP content was only marginal.},
	language = {en},
	number = {13},
	urldate = {2016-01-08},
	journal = {Journal of Applied Polymer Science},
	author = {Teuber, L and Militz, H and Krause, A},
	month = apr,
	year = {2016},
	pages = {1--9},
	file = {Teuber (2016b) - Influence of feeding method and MFI.pdf:C\:\\Users\\Eva\\Zotero\\storage\\H99DJJDH\\Teuber (2016b) - Influence of feeding method and MFI.pdf:application/pdf},
}

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