Mussel-inspired polydopamine-modified cellulose nanocrystal fillers for the preparation of reinforced and UV-shielding poly (lactic acid) films

Xu, Yizhuo; Zheng, Da Wei; Chen, Xiaojian; Yao, Wenrui; Wang, Yuning; Zheng, Zihao; Tan, Hongbo; Zhang, Yanhua

doi:10.1016/j.jmrt.2022.06.152

Cited by 13 publications

(9 citation statements)

References 45 publications

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“…Figure d shows the high-resolution of N 1s spectra which could be deconvoluted into three peaks corresponding to −N (399.0 eV), −N–H (400.0 eV), and −NH 2 (401.47 eV). The conversion of primary amine groups of dopamine to secondary, tertiary, and aromatic amines results from the oxidative self-polymerization of dopamine to PDA. ,,, …”

Section: Resultsmentioning

confidence: 99%

“…The conversion of primary amine groups of dopamine to secondary, tertiary, and aromatic amines results from the oxidative self-polymerization of dopamine to PDA. 43,51,62,63 The FTIR analysis was done to further prove the successful modification of PDA on CNCs, as shown in Figure 4a. The transmission spectrum of pristine CNC shows the characteristic peaks for cellulose present in it in the ranges of 3600−3000 cm −1 and 1200−1000 cm −1 .…”

Section: Resultsmentioning

confidence: 99%

“…In addition, the existence of PDA also endowed the composites with UV-shielding properties. 51 PDA-modified CNCs are also used as a filler to fabricate composite hydrogels.…”

Section: ■ Introductionmentioning

confidence: 99%

“…The PDA@CNCs/PLA composite with 1 wt % loading of PDA@CNC has shown tensile strength of ∼65 MPa, Young’s modulus of ∼1.7 GPa, and elongation-at-break of ∼6.2%. In addition, the existence of PDA also endowed the composites with UV-shielding properties . PDA-modified CNCs are also used as a filler to fabricate composite hydrogels.…”

Section: Introductionmentioning

confidence: 99%

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Preparation of Self-Assembled Sodium Carboxymethylcellulose/Polydopamine-Modified Cellulose Nanocrystals Ternary Nanocomposites: Implications for High-Performance UV-Shielding Films

Lodhi

Das

2022

ACS Appl. Nano Mater.

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The mechanically robust, high-performance, and functional nanocomposites have recently attracted considerable attention in both scientific and industrial research. Herein, we prepare the high-performance ternary nanocomposites using naturally occurring building blocks via a water-borne evaporation-induced self-assembly (EISA) process. Cellulose nanocrystals (CNCs) have been used as reinforcing fillers to be incorporated into the sodium carboxymethylcellulose (CMC) polymer matrix. The surface of CNCs was coated with polydopamine (PDA) to further improve the inherent properties of the CMC−CNC binary nanocomposites. The PDA acts as a bridge to enhance the interfacial interactions between CNCs and CMC. We optimized the PDA coating thickness on CNCs to tune the interfacial adhesion by varying the self-polymerization time of dopamine. The results showed that the self-polymerization of dopamine on the CNC surfaces for 24 h (DCNC-24) led to better structure formation and improved mechanical and thermal properties of the CMC−DCNC-24 ternary nanocomposites. At 50% RH, the CMC−DCNC-24 ternary nanocomposites exhibit an excellent tensile strength of 154 ± 12 MPa, Young's modulus of 10 ± 1 GPa, and toughness of 5 ± 1 MJ/m 3 . Due to their enhanced and stable interfacial interactions, the ternary nanocomposites demonstrate higher mechanical performances even at high relative humidity conditions compared to the pure CMC and CMC−CNC films. At 80% RH, CMC−DCNC-24 films have a strength of 36 ± 4 MPa, stiffness as high as 4.0 ± 0.5 GPa, and toughness of 4.0 ± 1.0 MJ/m 3 . The CMC−DCNC ternary nanocomposites have also shown enhanced thermal stability. In addition, the existence of PDA with UV-absorption ability induces UV-shielding properties to CMC− DCNC ternary films. Thus, the self-assembled CMC−DCNC ternary nanocomposites prepared in this work have implications to be applied as high-performance UV-shielding films for packaging.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…In addition, the existence of PDA also endowed the composites with UV-shielding properties. 51 PDA-modified CNCs are also used as a filler to fabricate composite hydrogels.…”

Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Preparation of Self-Assembled Sodium Carboxymethylcellulose/Polydopamine-Modified Cellulose Nanocrystals Ternary Nanocomposites: Implications for High-Performance UV-Shielding Films

Lodhi

Das

2022

ACS Appl. Nano Mater.

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“…Furthermore, natural mussels can firmly adhere to smooth stones to resist choppy waves. It has been that the mussel foot-byssal proteins (Mfps) have superior adhesion capacity and toughness, and they are widely used in the surface modification of nanofillers [ 30 , 31 , 32 ]. Many studies on mussel adhesion proteins modified nanofillers have focused on polydopamine (PDA).…”

Section: Introductionmentioning

confidence: 99%

Study on Bone-like Microstructure Design of Carbon Nanofibers/Polyurethane Composites with Excellent Impact Resistance

et al. 2022

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It is a challenge to develop cost-effective strategy and design specific microstructures for fabricating polymer-based impact-resistance materials. Human shin bones require impact resistance and energy absorption mechanisms in the case of rapid movement. The shin bones are exciting biological materials that contain concentric circle structures called Haversian structures, which are made up of nanofibrils and collagen. The “soft and hard” structures are beneficial for dynamic impact resistance. Inspired by the excellent impact resistance of human shin bones, we prepared a sort of polyurethane elastomers (PUE) composites incorporated with rigid carbon nanofibers (CNFs) modified by elastic mussel adhesion proteins. CNFs and mussel adhesion proteins formed bone-like microstructures, where the rigid CNFs are served as the bone fibrils, and the flexible mussel adhesion proteins are regarded as collagen. The special structures, which are combined of hard and soft, have a positive dispersion and compatibility in PUE matrix, which can prevent cracks propagation by bridging effect or inducing the crack deflection. These PUE composites showed up to 112.26% higher impact absorbed energy and 198.43% greater dynamic impact strength when compared with the neat PUE. These findings have great implications for the design of composite parts for aerospace, army vehicles, and human protection.

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Aramid nanofiber‐reinforced poly(lactic acid) nanocomposites with enhanced thermal stability, melt‐crystallization rates, and mechanical toughness

Kim,

Eom,

Seo

et al. 2023

Polymer Composites

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The main goal of this study is to investigate the impact of aramid nanofiber (ANF) on enhancing various properties of poly(lactic acid) (PLA), including thermal stability, crystallization rates, melt‐rheological behavior, and mechanical properties. To achieve this, ANF fillers were produced using a modified deprotonation process from commercial aramid fibers, and a masterbatch (PLA/ANF = 90/10 by wt%) was prepared through solution blending and drying. The masterbatch was then combined with neat PLA through melt‐blending to create a range of PLA nanocomposites containing 1–10 wt% ANF loadings. Microscopic and spectroscopic analyses confirmed the uniform dispersion and intermolecular interaction of ANFs within the PLA matrix, respectively. As a result, the nanocomposites exhibited a slight increase in glass transition temperature with higher ANF loading, while the cold‐crystallization temperature decreased due to ANFs acting as nucleating agents during PLA crystallization. Isothermal crystallization analysis confirmed accelerated melt‐crystallization rates in nanocomposites with greater ANF content. The introduction of ANFs enhanced the thermal degradation temperature of the PLA matrix and the 700°C residue of the nanocomposites, attributed to ANFs' barrier and flame retardant effects on PLA. Moreover, the nanocomposites with higher ANF loading demonstrated superior tensile strength, strain at break, toughness, and impact strength owing to the effective bonding interactions at the interfaces between the PLA matrix and the ANF fillers.Highlights ANF‐reinforced PLA nanocomposites are prepared by masterbatch melt‐compounding. Uniform dispersion of ANFs in PLA is attained via effective interfacial bonding. ANFs boost the melt‐crystallization of the PLA matrix. ANFs enhance the thermal stability of the PLA matrix. Tensile strength and toughness of PLA are improved with higher ANF content.

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Mussel-inspired polydopamine-modified cellulose nanocrystal fillers for the preparation of reinforced and UV-shielding poly (lactic acid) films

Cited by 13 publications

References 45 publications

Preparation of Self-Assembled Sodium Carboxymethylcellulose/Polydopamine-Modified Cellulose Nanocrystals Ternary Nanocomposites: Implications for High-Performance UV-Shielding Films

Preparation of Self-Assembled Sodium Carboxymethylcellulose/Polydopamine-Modified Cellulose Nanocrystals Ternary Nanocomposites: Implications for High-Performance UV-Shielding Films

Study on Bone-like Microstructure Design of Carbon Nanofibers/Polyurethane Composites with Excellent Impact Resistance

Aramid nanofiber‐reinforced poly(lactic acid) nanocomposites with enhanced thermal stability, melt‐crystallization rates, and mechanical toughness

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