TY - JOUR
T1 - Effect of wood cell wall composition on the rheological properties of wood particle/high density polyethylene composites
AU - Ou, Rongxian
AU - Xie, Yanjun
AU - Wolcott, Michael P.
AU - Yuan, Feipin
AU - Wang, Qingwen
N1 - Funding Information:
This work was supported by the National Key Technologies R&D Program of China (No. 2012BAD32B04 ), the National Natural Science Foundation of China (Nos. 31010103905, 31070507, 31270608, and 31100425 ), and the Program for New Century Excellent Talents in University of Ministry of Education of China (No. NCET-11-0608 ).
PY - 2014/3/18
Y1 - 2014/3/18
N2 - This study investigated the effect of wood cell wall composition on the rheological properties of wood particle/high density polyethylene (HDPE) blends. Four types of wood particle with different compositions were prepared: native wood flour (WF), hemicellulose-removed particle (HR), holocellulose (HC), and α-cellulose (αC). The particles were characterized in terms of functional groups, crystallinity, particle size, and morphology. Wood particle/HDPE composite formulations were melt-blended using a twin-screw extruder and the rheological properties of the blends were characterized using a Haake microcompounder, torque rheometer, capillary rheometer, and rotational rheometer. Results show that removal of lignin and/or hemicelluloses changed the crystallinity and microstructure of cell walls. These changes in cell wall composition and morphology altered the melt torque, shear stress, viscosity, and storage and loss moduli. Specifically, the melts viscosity decreased as αC/HDPE. >. HR/HDPE. >. WF/HDPE. >. HC/HDPE. This demonstrates that the composition of cell walls substantially affect the rheological behavior of wood particle/HDPE composites.
AB - This study investigated the effect of wood cell wall composition on the rheological properties of wood particle/high density polyethylene (HDPE) blends. Four types of wood particle with different compositions were prepared: native wood flour (WF), hemicellulose-removed particle (HR), holocellulose (HC), and α-cellulose (αC). The particles were characterized in terms of functional groups, crystallinity, particle size, and morphology. Wood particle/HDPE composite formulations were melt-blended using a twin-screw extruder and the rheological properties of the blends were characterized using a Haake microcompounder, torque rheometer, capillary rheometer, and rotational rheometer. Results show that removal of lignin and/or hemicelluloses changed the crystallinity and microstructure of cell walls. These changes in cell wall composition and morphology altered the melt torque, shear stress, viscosity, and storage and loss moduli. Specifically, the melts viscosity decreased as αC/HDPE. >. HR/HDPE. >. WF/HDPE. >. HC/HDPE. This demonstrates that the composition of cell walls substantially affect the rheological behavior of wood particle/HDPE composites.
UR - http://www.scopus.com/inward/record.url?scp=84893204528&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84893204528&partnerID=8YFLogxK
U2 - 10.1016/j.compscitech.2014.01.001
DO - 10.1016/j.compscitech.2014.01.001
M3 - Article
AN - SCOPUS:84893204528
SN - 0266-3538
VL - 93
SP - 68
EP - 75
JO - Composites Science and Technology
JF - Composites Science and Technology
ER -