Controllable dielectric and electrical performance of polymer composites with novel core/shell-structured conductive particles through biomimetic method

Yang, Dan; Tian, Ming; Wang, Wencai; Li, Dongdong; Li, Runyuan; Liu, Hao-Liang; Zhang, Liqun

doi:10.1016/j.electacta.2012.08.122

Cited by 33 publications

(9 citation statements)

References 33 publications

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“…33 However, the N/C ratio for the LMNP was 0.081, suggesting an incomplete coverage of PDA on the LNP surfaces, likely due to the formation of thin and rough layers in several nanometers. 52 The FTIR spectra of the LNP, LMNP, and MNP were collected as shown in respectively, together with their out of plane bending appearing at 815 cm −1 . 53 The MNP have no overlapping peaks to the lignin footprints, with the exception of a broad signal present above 3000 cm −1 .…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Biodegradable UV-Blocking Films through Core–Shell Lignin–Melanin Nanoparticles in Poly(butylene adipate-co-terephthalate)

Xing

Buono

Ruch

et al. 2019

ACS Sustainable Chem. Eng.

183

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Biodegradable and renewable UV-shielding films are highly demanded to meet the increasing sustainable requirement for the environment. Lignin as a natural broad UV blocker has gained considerable attention; however, the poor dispersibility within synthetic polymers limited its applications. Thus, a bioinspired melanin-like polydopamine thin layer was incorporated for the first time with lignin nanoparticle (LNP) in this effort, forming a UV-blocking core–shell lignin–melanin nanoparticle (LMNP) with higher compatibility and durability. Subsequently, LNP, LMNP, melanin nanoparticles (MNP), and a mix of LNP and MNP (MixNP) were compounded with poly(butylene adipate-co-terephthalate) (PBAT), to enhance the UV-barrier capability and photostability of PBAT films. The incorporated LMNPs were well distributed into PBAT, leading to improved tensile properties and thermal stability of the resulting films. All these films possessed remarkable UV-blocking capacity at NP concentration ranging from 0.5 to 5 wt %, blocking almost all of UV-A and more than 80% of UV-B light, while an appreciable optical transmittance could also be achieved. The PBAT–LMNP films displayed a high UV-shielding stability and the best retention in mechanical properties after UV exposure for 40 h. This work provides a very promising approach for fabricating biodegradable PBAT-based UV-blocking films for potential applications in agricultural or food packaging materials where the UV resistance is highly required.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Biodegradable UV-Blocking Films through Core–Shell Lignin–Melanin Nanoparticles in Poly(butylene adipate-co-terephthalate)

Xing

Buono

Ruch

et al. 2019

ACS Sustainable Chem. Eng.

183

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“…On the other hand, mussel-inspired PDA surface modification was highlighted in recent years to improve the interfacial adhesion between different phases in composites [27][28][29][37][38][39][40]. The approach was identified to be effective and efficient.…”

Section: Discussionmentioning

confidence: 98%

Flexible fiber-reinforced composites with improved interfacial adhesion by mussel-inspired polydopamine and poly(methyl methacrylate) coating

Sun

Zhang

et al. 2016

Materials Science and Engineering: C

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“…Furthermore, the high filler loading also brings about other severe problems, such as the phase interfacial defects and poor mechanical and processing properties [ 17 ]. Many researchers used hydroxyl groups, coupling agents, surfactants and phosphoric acid to modify the surfaces of nanoparticles to combat this problem [ 18 , 19 ], and these surface modifiers can improve the dispersion of nanoparticles and form a more stable interface layer to suppress dielectric losses of the composites.…”

Section: Introductionmentioning

confidence: 99%

Improved Dielectric Properties of Thermoplastic Polyurethane Elastomer Filled with Core–Shell Structured PDA@TiC Particles

Zhou

Jin

et al. 2020

Materials

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Insulating interlayer between nanoparticles and polymer matrix is crucial for suppressing the dielectric loss of polymer composites. In this study, titanium carbide (TiC) particles were surface modified by polydopamine (PDA), and the obtained PDA@TiC powders were used to reinforce thermoplastic polyurethane (TPU). The results indicate that the PDA@TiC were homogenously dispersed in the matrix compared with the pristine TiC, and that the PDA@TiC/TPU composites show improved dielectric and mechanical properties, i.e., much lower dissipation factors and obviously enhanced dielectric breakdown strength, as well as higher tensile strength and elongation at break as compared to the raw TiC/TPU. The nanoscale PDA interlayer contributes to the dielectric and mechanical enhancements because it not only serves as an insulating shell that prevents TiC particles from direct contacting and suppresses the loss and leakage current to very low levels, but also enhances the interfacial interactions thereby leading to improved mechanical strength and toughness. The prepared flexible PDA@TiC/TPU with high permittivity but low loss will find potential applications in electronic and electrical applications.

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Controllable dielectric and electrical performance of polymer composites with novel core/shell-structured conductive particles through biomimetic method

Cited by 33 publications

References 33 publications

Biodegradable UV-Blocking Films through Core–Shell Lignin–Melanin Nanoparticles in Poly(butylene adipate-co-terephthalate)

Biodegradable UV-Blocking Films through Core–Shell Lignin–Melanin Nanoparticles in Poly(butylene adipate-co-terephthalate)

Flexible fiber-reinforced composites with improved interfacial adhesion by mussel-inspired polydopamine and poly(methyl methacrylate) coating

Improved Dielectric Properties of Thermoplastic Polyurethane Elastomer Filled with Core–Shell Structured PDA@TiC Particles

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