title: Effects of Modifier Type on Properties of in Situ Organo-Montmorillonite Modified Wood Flour/Poly(lactic acid) Composites.
abstract: 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.
authors.affiliation: Research Institute of Wood Industry, Chinese Academy of Forestry, Haidian 100091, Beijing, China.
authors.forename: Ru
authors.initials: R
authors.lastname: Liu
authors.affiliation: MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University , Qinghua East Road 35, Haidian 100083, Beijing, China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Chen
authors.affiliation: MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University , Qinghua East Road 35, Haidian 100083, Beijing, China.
authors.forename: Jinzhen
authors.initials: J
authors.lastname: Cao
mesh_terms: D001546:Bentonite / Q000737:chemistry*; D002152:Calorimetry, Differential Scanning; D005433:Flour / Q000032:analysis*; D019344:Lactic Acid / Q000737:chemistry*; D011091:Polyesters; D011108:Polymers / Q000737:chemistry*; D013818:Thermogravimetry; D014867:Water / Q000737:chemistry; D014934:Wood / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D011091:Polyesters; D011108:Polymers; D014867:Water; D001546:Bentonite; D019344:Lactic Acid; C033616:poly(lactide)
keywords: modifier; montmorillonite; poly(lactic acid); wood flour; wood−plastic composites