Composites of silane treated cellulosic fibers and high density polyethylene

Abstract

Silanes with different functional groups (vinyl, acryl and amino) were used to pretreat the wood fiber. Composites were made with high density polyethylene (HDPE) and silane pretreated wood fibers at various filler levels (0 to 40 wt.-Yo). The effects of silane treatment on fiber-matrix adhesion and fiber dispersion were studied. The characterization of fiber-matrix interaction was done by IR. The influence of silane concentration, filler content and the nature of wood fiber on mechanical properties (tensile and impact strength) of the composites were examined. ZUSAMMENFASSUNG:Holzfasern wurden mit Silanen mit verschiedenen funktionellen Gruppen, wie Vinyl-, Acryl-und Aminogruppen, vorbehandelt und als Fiillstoff fur Polyethylen hoher Dichte bis zu einem Fiillstoffgehalt von 40 Gew.-Yo verwendet. Die Wirkung der Silanvorbehandlung auf die Adhasion zwischen Matrix und Faser und auf die Faserverteilung in den Verbundwerkstoffen wurde untersucht und die Wechselwirkungen zwischen Matrix und Faser dabei IR-spektroskopisch charakterisiert. Der Einflulj von Silankonzentration, Fiillstoffgehalt und Natur der verwendeten Holzfaser auf mechanische Eigenschaften der Faserverbundwerkstoffe, wie Zugfestigkeit und Kerbschlagzahigkeit, wurde ebenfalls ermittelt.

From nanocellulose to wood particles: A review of particle size vs. the properties of plastic composites reinforced with cellulose-based entities

“…The higher strength achieved with the NFC possibly might be explained by an expected higher aspect ratio, leading to an enhanced reinforcing ability. Raj and Kokta (1991) observed decreased composite strength with increasing size of reinforcements obtained from the same aspen wood chips. Chemithermomechanical pulp (CTMP) was made using a pressurized refining process, which is a commonly used process in the pulp and paper industry.…”

“…Such treatment led to large improvements in the strength of composites formed with an acrylic copolymer. Raj and Kokta 1991;Cui et al 2008;Frone et al 2011;Mokhene & Luyt 2014;Farsi 2012;Nishitani et al 2016;Chen et al 2017;Fang et al 2017;Gao et al , 2019Zhou et al 2017;Rashno et al 2018;Fathi et al 2019, Ikladious et al 2019Liu et al 2019 Esterification (including acetylation and monomeric alkyl esters) Zhang et al 2009;Taib et al 2010;Ben Mbarek et al 2013;Cavdar et al 2014;Cetin et al 2015;Hung et al 2016;Biswas et al 2019;John et al 2019 Maleic anhydride polyethylene (MAPE)* Bouafif et al 2010;Sewda & Maiti 2010;Taib et al 2010;Zabihzadeh et al 2010;Najafi & Khademi-Eslam 2011;Yao et al 2011;Li 2012;Petchwattana et al 2012;Ben Mbarek et al 2013;Gallagher & McDonald 2013;Li et al 2013;Hemmasi 2013;Pollanen et al 2013;Tisserat et al 2013a,b;Schirp et al 2014;Tazi et al 2014;Tong et al 2014;Migneault et al 2015;...…”

“…Published results for tensile breaking strength of HDPE composites for studies that considered more than one particle size under the same conditions of composite preparation. Articles represented in the figure are as follows: (Raj and Kokta 1991;Bouafif et al 2010;Aji et al 2011;Petchwattana et al 2012;Gallagher and McDonald 2013;Pollanen et al 2013;Li et al 2014;Ogah and Afiukwa 2014;Gozdecki and Wilczynski 2015;Tisserat et al 2015;Xu et al 2016;Chen et al 2018;Igarishi et al 2018).…”

Enhancement of Polyolefins Compatibility with Natural Fibers through Chemical Modification

“…Such surface modifications of the wood fiber would improve the interfacial bond strength, which is a critical factor for obtaining better mechanical properties of composites [17]. The other alternative is to modify the plastic component in the WPC either by using blends with different plastic types or by using coupling agent which may be compatible with the hydrophobic plastic components and the hydrophilic wood or natural fiber component.…”

Untitled

“…Different works have been devoted to thermoplastics/wood composites; in general, these composites are based on high density polyethylene (HDPE), [3][4][5][6][7][8] chlorinated polyethylene (CPE), poly(propylene) (PP), [9][10][11][12] polystyrene (PS) [5, 13 -15] and poly(vinyl chloride) (PVC). as filler in the reinforcement of polymeric matrices has been growing during the last decade.…”