Study on modified poplar wood powder/polylactic acid high toughness green 3D printing composites

Kong, Mingru; Zheng, Qiang; Zhang, Ping; Xie, Guangqiang; Wang, Hao; Wang, Jun; Guan, Fulong; Yang, Weizhen; Qiu, Zhaowen

doi:10.1016/j.ijbiomac.2022.12.197

Cited by 21 publications

(12 citation statements)

References 47 publications

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“…Tan delta represents the ratio of E ″ to E ′, and therefore, the higher tan delta value in plain PLA indicates a greater viscous behavior, whereas the composites demonstrated a dominant elastic behavior due to the stiffening effect of rigid SrHAP particles. Similar findings have been reported in PLA-based composites. , …”

Section: Resultsmentioning

confidence: 99%

Strontium-Substituted Nanohydroxyapatite-Incorporated Poly(lactic acid) Composites for Orthopedic Applications: Bioactive, Machinable, and High-Strength Properties

Shaikh,

Baniasadi,

Mehrotra

et al. 2023

Biomacromolecules

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Traditional metal-alloy bone fixation devices provide structural support for bone repair but have limitations in actively promoting bone healing and often require additional surgeries for implant removal. In this study, we focused on addressing these challenges by fabricating biodegradable composites using poly(lactic acid) (PLA) and strontium-substituted nanohydroxyapatite (SrHAP) via melt compounding and injection molding. Various percentages of SrHAP (5, 10, 20, and 30% w/w) were incorporated into the PLA matrix. We systematically investigated the structural, morphological, thermal, mechanical, rheological, and dynamic mechanical properties of the prepared composites. Notably, the tensile modulus, a critical parameter for orthopedic implants, significantly improved from 2.77 GPa in pristine PLA to 3.73 GPa in the composite containing 10% w/w SrHAP. The incorporation of SrHAP (10% w/w) into the PLA matrix led to an increased storage modulus, indicating a uniform dispersion of SrHAP within the PLA and good compatibility between the polymer and nanoparticles. Moreover, we successfully fabricated screws using PLA composites with 10% (w/w) SrHAP, demonstrating their formability at room temperature and radiopacity when observed under X-ray microtomography (micro-CT). Furthermore, the water contact angle decreased from 93 ± 2° for pristine PLA to 75 ± 3° for the composite containing SrHAP, indicating better surface wettability. To assess the biological behavior of the composites, we conducted in vitro cell-material tests, which confirmed their osteoconductive and osteoinductive properties. These findings highlight the potential of our developed PLA/SrHAP10 (10% w/w) composites as machinable implant materials for orthopedic applications. In conclusion, our study presents the fabrication and comprehensive characterization of biodegradable composites comprising PLA and strontium-substituted nanohydroxyapatite (SrHAP). These composites exhibit improved mechanical properties, formability, and radiopacity while also demonstrating desirable biological behavior. Our results suggest that these PLA/SrHAP10 composites hold promise as machinable implant materials for orthopedic applications.

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Section: Resultsmentioning

confidence: 99%

Strontium-Substituted Nanohydroxyapatite-Incorporated Poly(lactic acid) Composites for Orthopedic Applications: Bioactive, Machinable, and High-Strength Properties

Shaikh,

Baniasadi,

Mehrotra

et al. 2023

Biomacromolecules

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“…The IR spectra of biocomposite materials were generated using the spectrum FTIR (IS50, Thermo Fisher Scientific, Waltham, MA, USA) in an attenuated total refection mode with 4 cm -1 resolution and 32 scans in the range of 500 to 4000 cm -1 (Kong et al 2023).…”

Section: Ftir Analysismentioning

confidence: 99%

“…The surface morphological properties of the PBS/PLA composite, native bagasse fiber/PBS/PLA composite, and NaOH-treated bagasse fiber/ PBS/PLA composite were analyzed using field emission scanning electron microscopy (Kong et al 2023). The samples were gold sputtered before being subjected to SEM analysis (SU5000, Hitachi High Technology Co., Tokyo, Japan).…”

Section: Morphological Property Analysismentioning

confidence: 99%

“…By 2025, global plastic production is expected to reach 500 million tons, 60% of which will enter the environment as plastic waste (Aliotta et al 2022). In recent years, great efforts have been made to develop novel green composite materials (Mochane et al 2021;Qi et al 2022;Kong et al 2023). Bio-based polymers are considered a suitable replacement of petroleum-based polymers (Zhang 2021;Nithikarnjanatharn and Samsalee 2022).…”

Section: Introductionmentioning

confidence: 99%

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Biocomposite optimization with NaOH-modified bagasse fiber, polybutylene succinate, and poly(lactic acid) using RSM approach

Pei

Zou

Wang

et al. 2023

BioRes

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Alkali-treated bagasse fiber was used as a process variable for optimization of the properties of polybutylene succinate/poly(lactic acid)-based biocomposites using Box-Behnken design (BBD) and response surface methodology (RSM). The optimum conditions for three factors, i.e., NaOH-treated bagasse fiber (0.55 to 1.65 g), polybutylene succinate (1.1 to 2.3 g), and poly(lactic acid) (2.2 to 3.4 g) on the bending strength of biocomposite were investigated. The optimum combination was 0.91 g of NaOH-treated bagasse fiber, 1.14 g of polybutylene succinate, and 3.10 g of poly(lactic acid). The bending strength for NaOH-treated bagasse fiber/polybutylene succinate/ poly(lactic acid) composite was 27.0 MPa, which was 26.0% higher than native bagasse fiber-based composite. The composites were also characterized by thermogravimetric analysis, mechanical testing, Fourier transform infrared, scanning electron microscopy, water absorption, and contact angle tests. Results demonstrated that the bending strength, impact strength, and tensile strength of alkali treated bagasse fiber-based biocomposite increased by 26.0%, 15.5%, and 23.3%, separately, compared with native bagasse-based composite after sequential homogenization, compounding, and hot pressing. The hydrophobicity for alkali-treated bagasse fiber/PBS/PLA was also improved. Thus, NaOH-treated biomass materials/biodegradable polymer was judged to be suitable for preparing green composite materials.

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“…Due to their prominent advantages of low cost, light weight, renewability, biodegradability, easy processing, and high strength-to-weight ratio, plant fibers have been widely introduced into FDM 3D-printed composite samples in recent years [ 12 , 13 , 14 ]. Among these, wood flour (WF) has been used the most; for example, Kong et al [ 15 ] prepared WF from poplar wood and then FDM 3D-printed WF/PLA biocomposite samples, using poly lactic acid graft maleic anhydride and silane coupling agent KH-550 as a compatibilizer and coupling agent, and poly butylenedioate-co-terephthalate and poly butylene succinate (PBS) as toughening agents. The modified composite had increased impact strength and storage modulus than in comparison to the unmodified one.…”

Section: Introductionmentioning

confidence: 99%

Effect of Modification and Hydrothermal Ageing on Properties of 3D-Printed Wood Flour–Poly(butylene succinate)–Poly(lactic acid) Biocomposites

Yu,

Sun,

et al. 2023

Polymers

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Wood flour–poly(butylene succinate)–poly(lactic acid) biocomposite samples were prepared by fused-deposition-molding 3D-printing technology, and modifications with glycerol and a silane coupling agent (KH550) were carried out. The samples were then hydrothermally aged. Modification with glycerol and KH550 enhanced the hydrophilicity of the samples and increased their tensile strength. Hydrothermal aging clearly whitened the surfaces of all the samples and made them more hydrophobic. Meanwhile, their tensile properties and thermal stability became poor; a higher hydrothermal aging temperature affected the mechanical properties more negatively. The modified samples turned out to be more resistant to the hydrothermal aging, and modification with KH550 could improve the anti-hydrothermal aging properties of the samples better than that with glycerol, where the tensile properties and the cross-sectional morphologies of the fractured specimens were concerned. Generally, the effects of hydrothermal aging temperature on the physico-mechanical properties of the printed specimens were greater than those by hydrothermal aging time.

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Study on modified poplar wood powder/polylactic acid high toughness green 3D printing composites

Cited by 21 publications

References 47 publications

Strontium-Substituted Nanohydroxyapatite-Incorporated Poly(lactic acid) Composites for Orthopedic Applications: Bioactive, Machinable, and High-Strength Properties

Strontium-Substituted Nanohydroxyapatite-Incorporated Poly(lactic acid) Composites for Orthopedic Applications: Bioactive, Machinable, and High-Strength Properties

Biocomposite optimization with NaOH-modified bagasse fiber, polybutylene succinate, and poly(lactic acid) using RSM approach

Effect of Modification and Hydrothermal Ageing on Properties of 3D-Printed Wood Flour–Poly(butylene succinate)–Poly(lactic acid) Biocomposites

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