Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 8, Issue 1, Pages 161-168Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b07989
Keywords
wood flour; poly(lactic acid); wood-plastic composites; montmorillonite; modifier
Funding
- National Natural Science Foundation of China [31170524]
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Wood flour (WF) was modified with sodium-montmorillonite (Na-MMT) and two types of surfactant modifiers, namely, didecyl dimethylammonium chloride (DDAC) and sodium dodecyl sulfonate (SDS) though a two-step process inside WF. The thus-modified WFs were characterized, and the effects of MMT type on physical, mechanical, and thermal properties of their composites with poly(lactic acid) (PLA) were investigated. The results showed: (1) either DDAC or SDS could modified Na-MMT into OMMT, and then uniformly distributed in WF cell walls; (2) OMMT improved the physical properties, most mechanical properties, and thermal properties of the composites except for the impact strength; and (3) compared with SDS, DDAC seemed to perform better in properties of composites. However, DDAC showed some negative effect on the early stage of composite thermal decomposition.
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