Effects of BN/GO on the recyclable, healable and thermal conductivity properties of ENR/PLA thermoplastic vulcanizates

Jia, Chunhui; Zhang, Ping; Seraji, Seyed Mohsen; Xie, Ruishi; Chen, Lin; Liu, Dong; Xiong, Ying; Chen, Hao; Fu, Yingke; Xu, Hailun; Song, Pingan

doi:10.1016/j.compositesa.2021.106686

Cited by 28 publications

(15 citation statements)

References 55 publications

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“…Kim et al [12] reported that as the length of multi-walled CNTs increased, the thermal conductivity of the nanocomposite was improved due to a reduction in the ITR effect caused by a decrease in phonon scattering at the end of the filler. In addition, the authors [13] found that as the lateral size or thickness of graphene nanoplatelets (GNPs) increased, the thermal conductivity of the nanocomposite was improved because phonon scattering was reduced due to the decrease in the interface between the filler and polymer matrix [14,15]. Therefore, it can be confirmed that controlling the ITR is important for optimizing the thermal conductivity of a nanocarbon-filled polymer composite, and as the region where the shape of the filler meets the polymer matrix is reduced, the ITR effect decreases, resulting in excellent thermal conductivity.…”

Section: Introductionmentioning

confidence: 99%

Thermal Percolation Behavior in Thermal Conductivity of Polymer Nanocomposite with Lateral Size of Graphene Nanoplatelet

Jang

Nam

et al. 2022

Polymers

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In this study, the thermal percolation behavior for the thermal conductivity of nanocomposites according to the lateral size of graphene nanoplatelets (GNPs) was studied. When the amount of GNPs reached the critical concentration, a rapid increase in thermal conductivity and thermal percolation behavior of the nanocomposites were induced by the GNP network. Interestingly, as the size of GNPs increased, higher thermal conductivity and a lower percolation threshold were observed. The in-plane thermal conductivity of the nanocomposite containing 30 wt.% M25 GNP (the largest size) was 8.094 W/m·K, and it was improved by 1518.8% compared to the polymer matrix. These experimentally obtained thermal conductivity results for below and above the critical content were theoretically explained by applying Nan’s model and the percolation model, respectively, in relation to the GNP size. The thermal percolation behavior according to the GNP size identified in this study can provide insight into the design of nanocomposite materials with excellent heat dissipation properties.

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Section: Introductionmentioning

confidence: 99%

Thermal Percolation Behavior in Thermal Conductivity of Polymer Nanocomposite with Lateral Size of Graphene Nanoplatelet

Jang

Nam

et al. 2022

Polymers

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“…With increasing content of BN-COOH, The result suggested strong interfacial interaction between BN-COOH and ENR due to formed covalent crosslinking bonds, which was consistent with the enhanced mechanical performance. 36,37 Figure 6 shows the temperature dependence of the storage modulus (E′) and the loss factor (tan δ) for ENR/BN-COOH/GO nanocomposites with different BN-COOH contents. It was seen that below the glass transition temperature (T g ), the storage modulus (E′) for all samples decreased with increasing temperature, and tended to be the same when the temperature reached T g and the samples entered a high elastic state.…”

Section: Mechanical Properties and Dynamic Features Of Enr/ Bn-cooh/g...mentioning

confidence: 99%

Recyclable, Self-Healing, and Highly Thermal Conductive Natural Rubber Nanocomposites Enabled by a Dynamic Covalent Network with Carboxylated Boron Nitride Nanosheets

Gong

Guo

et al. 2023

ACS Sustainable Chem. Eng.

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It is of great significance for saving resources and protecting the environment to endow rubber with excellent recycling ability. Recyclable and self-healing ENR/BN-COOH/GO nanocomposites were prepared through dynamic covalent crosslinking between epoxidized natural rubber (ENR) and carboxylated boron nitride (BN-COOH), and graphene oxide (GO) was used as a reinforcing filler. The constructed dynamic β-hydroxyl ester bond between ENR and BN-COOH resulted in the remarkable enhancement of interfacial interaction and effective energy dissipation, which contributed to good mechanical properties of the nanocomposites, increasing by 116 and 79% in comparison with ENR and ENR/GO, respectively. An exchangeable β-hydroxyl ester bond could regulate a network topology structure via a transesterification reaction at the interface, endowing ENR with desirable recycling and self-healing ability. Moreover, the significant improvement of thermal conductivity for ENR/BN-COOH/GO nanocomposites was achieved, reaching 2.853 W/(m·K) at only 6 wt % BN-COOH content, indicating the formation of effective thermal conductive paths via the β-hydroxyl ester bond and hybrid thermal conductive network of BN-COOH/GO. Meanwhile, the thermal conductivity of recycled samples still maintained a high level due to the construction of the stable thermal conductive network. Such a facile strategy exhibits a promising perspective in preparing recyclable and highly thermal conductive rubber nanocomposites for applications in efficient thermal management fields.

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“…The investigations of bio‐TPVs with bioelastomer and biodegradable plastic have increased in recent years. As one of the most promising biodegradable plastics, PLA has been adopted as the plastic component to mix with various elastomers, such as NR, epoxidized NR (ENR), Eucommia ulmoides gum (EUG), acrylonitrile‐butadiene rubber and polyester elastomers 34–45 . For example, Chen and colleagues 41,42 developed PLA/NR TPV and PLA/ENR TPV and demonstrated that the PLA phase and crosslinked NR or ENR phases exhibit bicontinuous phase structures.…”

Section: Introductionmentioning

confidence: 99%

Sustainable, processable and cytocompatible bioelastomers based on polycaprolactone and biobased polyester elastomer via dynamic vulcanization

Kang

Wang

et al. 2023

Polymer International

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Bioelastomers (bio-thermoplastic vulcanizate, bio-TPV) with tunable elasticity, high strength and satisfactory cytocompatibility were fabricated via an in situ dynamic vulcanizing strategy, i.e. melt blending of biobased polyester elastomer (BPE) and polycaprolactone (PCL) in the presence of crosslinker with the occurrence of phase inversion. A large amount of the BPE, which provides flexibility and elasticity, was quickly crosslinked and finely dispersed in the PCL matrix, which provides strength and processability. Bio-TPV with a BPE/PCL weight ratio of 70/30 exhibited good tensile properties, such as a tensile strength of 11.2 MPa and elongation at break of 414%. Additionally, the bio-TPV demonstrated satisfactory processability and reprocessability. Moreover, the as-prepared bio-TPV promotes MC3T3 cell adhesion and proliferation. The combination of improved sustainability, processability, cytocompatibility and mechanical performance makes these bio-TPVs potential candidates for both biomedical and engineering materials.

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Effects of BN/GO on the recyclable, healable and thermal conductivity properties of ENR/PLA thermoplastic vulcanizates

Cited by 28 publications

References 55 publications

Thermal Percolation Behavior in Thermal Conductivity of Polymer Nanocomposite with Lateral Size of Graphene Nanoplatelet

Thermal Percolation Behavior in Thermal Conductivity of Polymer Nanocomposite with Lateral Size of Graphene Nanoplatelet

Recyclable, Self-Healing, and Highly Thermal Conductive Natural Rubber Nanocomposites Enabled by a Dynamic Covalent Network with Carboxylated Boron Nitride Nanosheets

Sustainable, processable and cytocompatible bioelastomers based on polycaprolactone and biobased polyester elastomer via dynamic vulcanization

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