Modification of the wood‐plastic composite for enhancement of formaldehyde clearance and the 3D printing application

Abstract

As the formaldehyde is one of the main indoor pollutants, the purpose of this study is to effectively remove indoor formaldehyde pollution by using environmentally friendly 3D printing ornaments. The wood 3D printing filaments cellulose/polylactic acid composite (Cellu/P) was selected as the starting material, and 3-aminopropyltriethoxysilane (APTES) was used for chemical modification to obtain a series of cellulose composite materials with amino groups. The modified composite materials (APTES@Cellu/P) were characterized by Fourier transform infrared, X-ray diffraction, scanning electron microscope, energy dispersive spectroscopy, thermogravimetric analysis, and mechanical tests, and a formaldehyde removal experiment was performed. The feasibility of 3D printing was evaluated, and the process of 3D printing-functionalized customized ornaments was proposed, and then a school emblem was used for modeling, printing, and surface modification. Compared with the commercially traditional activated carbon, 3D printing-customized ornaments of APTES@Cellu/P material has a better formaldehyde removal effect, and can even avoid the secondary pollution that is common to the activated carbon.

Cellulose-Reinforced Polylactic Acid Composites for Three-Dimensional Printing Using Polyethylene Glycol as an Additive: A Comprehensive Review

“…Notably, merely two of these publications documented the implementation of surface modifications to the fibers. Jiang et al [125] documented the chemical modification of wood with 3-aminopropyltriethoxysilane (APTES). In a separate study, Ma et al [122] conducted a comparative analysis involving three different pretreatment methods for reed (NaOH, p-TsOH (p-toluenesulfonic acid, and H 2 SO 4 -SE-steam explosion).…”

“…Table 6 summarizes some of the main parameters used for the 3D printing process reported in the research papers resulting from Search 2. Did not report printing conditions [125] Did not report printing conditions [126] 0 As in Search 1, some papers resulting from Search 2 did not necessarily report the production of PLA/cellulose composites or nanocomposites but rather the formation of blends and/or the use of cellulose derivatives. Pis et al [143], for example, did not produce the PLA/cellulose filament but studied the properties of different commercial filaments such as transparent PLA (referred to as PLA), PLA-wood (referred to as pine), PLA-cork (referred to as cork), PLA-bamboo (referred to as Bambus), while Jiang et al [120] prepared hydroxypropyl methylcellulose (HPMC)/PLA composite filaments to produce parts via fused deposition modeling (FDM).…”

“…Nevertheless, the PLA/cellulose (nano)composite shows significant promise for 3D printing applications, especially when incorporating additives like PEG. These additives enhance the composite's rheological, mechanical, and thermal properties, making it an attractive candidate for a wide range of 3D printing applications [5,6,17,24,42,44,47,48,51,53,77,120,122,125,126,131,136,142,143].…”

Mathematical Model for Determining the Colorimetric Characteristics of Composite Materials Based on PLA and Wood Filler

“…The active development of materials science has led to the appearance of new polymer binders types with increased rheological and strength indicators and composite materials based on them. Creation of new composites plays a key role in the development of space, energy, biotechnological, chemical systems, construction and other sectors of the economy [1][2][3][4].…”