Thermo-Mechanical Performance of Polylactide Composites Reinforced with Alkali-Treated Bamboo Fibers

Wang, Fang; Zhou, Shujue; Yang, Mengqing; Chen, Zhiqian; Ran, Siyan

doi:10.3390/polym10040401

Cited by 62 publications

(41 citation statements)

References 46 publications

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“…However, the shift of the characteristic temperatures was less than 9 °C. The efficiency of a reinforcing fiber is decisively influenced by the fiber–polymer interface, a good interface adhesion leading to a better stress transfer from the polymer to the fiber and to a higher strength [ 69 ]. The mechanical properties of PHB nanocomposites were measured in tensile mode ( Table 5 ).…”

Section: Resultsmentioning

confidence: 99%

Treatment of Nanocellulose by Submerged Liquid Plasma for Surface Functionalization

et al. 2018

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Tailoring the surface properties of nanocellulose to improve the compatibility of components in polymer nanocomposites is of great interest. In this work, dispersions of nanocellulose in water and acetonitrile were functionalized by submerged plasmas, with the aim of increasing the quality of this reinforcing agent in biopolymer composite materials. Both the morphology and surface chemistry of nanocellulose were influenced by the application of a plasma torch and filamentary jet plasma in a liquid suspension of nanocellulose. Depending on the type of plasma source and gas mixture the surface chemistry was modified by the incorporation of oxygen and nitrogen containing functional groups. The treatment conditions which lead to nanocellulose based polymer nanocomposites with superior mechanical properties were identified. This work provides a new eco-friendly method for the surface functionalization of nanocellulose directly in water suspension, thus overcoming the disadvantages of chemical treatments.

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Section: Resultsmentioning

confidence: 99%

Treatment of Nanocellulose by Submerged Liquid Plasma for Surface Functionalization

et al. 2018

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“…The third portion was treated by alkaline solution (NaOH 1.5% wt/wt). The soaking time was 24 h. The fiber was then removed from the basins and washed by distilled water to remove excess NaOH and then left to dry at ambient temperature (25 • C) for 24 h. Treatment of sisal fiber using diluted alkaline solution has been carried out to remove lignin and impurities which may help in improving sisal fiber-polymer interfacial bonding [43][44][45][46]. All sisal fiber sets were cut into equal lengths of 0.03 m. Finally, the three portions were heat-treated inside an oven at 100 • C for 24 h to get rid of any water content inside the fibers.…”

Section: Sisal Treatmentmentioning

confidence: 99%

Fabrication and Characterization of Microcellular Polyurethane Sisal Biocomposites

Abdel-Hamid¹,

Al-Qabandi²,

N.A.S.

et al. 2019

Molecules

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In this study, microcellular polyurethane (PU)-natural fiber (NF) biocomposites were fabricated. Polyurethanes based on castor oil and PMDI were synthesized with varying volume ratios of sisal fiber. The effect of natural fiber treatment using water and alkaline solution (1.5% NaOH) and load effect were investigated. Biocomposites were mechanically and physically investigated using tensile, viscoelasticity, and water absorption tests. The interfacial adhesion between PU and sisal fiber was studied using SEM. Short NF loads (3%) showed a significant improvement in the mechanical properties of the PU-sisal composite such as modulus of elasticity, yield and tensile strength up to 133%, 14.35 % and 36.7% respectively. Viscoelastic measurements showed that the composites exhibit an elastic trend as the real compliance (J’) values were higher than those of the imaginary compliance (J’’). Increasing NF loads resulted in a decrease of J’. Applying variable temperatures (120–80 °C) caused an increase in the stiffness at different frequencies.

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“…Substances of plant origin are used more and more as functional additives for polymers, mainly biodegradable materials. The combination of biodegradable polymer matrix and modifying additives derived from natural raw materials seems to be very beneficial for both the environment and human health [6,7]. Such fully natural polymeric materials fit perfectly into the current trends of packaging materials and can potentially find wide applications in the packaging industry.…”

Section: Introductionmentioning

confidence: 99%

The Application of (+)-Catechin and Polydatin as Functional Additives for Biodegradable Polyesters

Latos‐Brozio

Masek

2020

IJMS

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Plant polyphenols are a huge group of compounds with a wide spectrum of applications. Substances from this group have been used in polymer materials such as stabilizers, dyes, indicators, fungicides, and bactericides, especially in new generation packaging materials. The aim of this study is to obtain environmentally friendly materials based on the biodegradable aliphatic polyesters, polylactide (PLA) and polyhydroxyalkanoate (PHA), with plant functional additives, (+)-catechin and polydatin. These natural polyphenols (polydatin and (+)-catechin) have not been used so far in polymer materials (especially in biodegradable polyesters) as stabilizers, dyes, and indicators of aging. The application of polydatin and (+)-catechin as multifunctional additives for biodegradable polymers is a scientific novelty. This paper presents the following analyses of polyester materials: SEM microscopy, wide angle x-ray diffraction, mechanical properties, thermal analysis, surface free energy analysis, and determination of change of color after controlled UV exposure, thermal oxidation and weathering. Both PLA and PHA polyesters were characterized by higher resistance to oxidation and greater resistance to degradation under the influence of UV radiation. In addition, (+)-catechin was used simultaneously as a dye and an indicator of the aging time of polymeric materials. In contrast, polydatin did not dye polymers, but was a very good indicator of their lifetime, changing color under the influence of various external factors. Both polyphenols can be successfully used as natural additives for pro-ecological polyesters.

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Thermo-Mechanical Performance of Polylactide Composites Reinforced with Alkali-Treated Bamboo Fibers

Cited by 62 publications

References 46 publications

Treatment of Nanocellulose by Submerged Liquid Plasma for Surface Functionalization

Treatment of Nanocellulose by Submerged Liquid Plasma for Surface Functionalization

Fabrication and Characterization of Microcellular Polyurethane Sisal Biocomposites

The Application of (+)-Catechin and Polydatin as Functional Additives for Biodegradable Polyesters

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