Coupling efficiency of maleated polyethylene copolymers in wood fiber-high density polyethylene composites
Document Type
Conference Proceeding
Publication Date
6-1-2004
Abstract
Coupling efficiency of several maleated polyethylene (MAPE) copolymers was investigated in this study. Interfacial bonding strength, flexural modulus, and other mechanical properties of wood fiber-high density polyethylene (HDPE) composites were related to coupling agent type, molecular weight, acid number, and concentration. Acid number and molecular weight were two important indexes for interfacial adhesion. Acid number had negative influence on interfacial bonding strength at high concentration, whereas molecular weight had positive effects. Backbone structure of coupling agents also affected interfacial bonding strength. MAPEs with linear low-density polyethylene (LLDPE) backbone were better than those with HDPE and low-density polyethylene (LDPE) structure. Compared with untreated composites, modified composites with 50% of wood fiber were improved in interfacial bonding strength by 140% on maximum and flexural modulus by 29%. According to experimental results, coupling agent 100D, 226 D, and C16 were the best coupling agents. Therefore, coupling agents with larger molecular weight, moderate acid number, and low concentration were preferred to improve the interfacial bonding of the resultant composites.
Publication Source (Journal or Book title)
Annual Technical Conference - ANTEC, Conference Proceedings
First Page
1624
Last Page
1631
Recommended Citation
Lu, J., Wu, Q., & Negulescu, I. (2004). Coupling efficiency of maleated polyethylene copolymers in wood fiber-high density polyethylene composites. Annual Technical Conference - ANTEC, Conference Proceedings, 2, 1624-1631. Retrieved from https://repository.lsu.edu/textile_pubs/156