Volume 139, Issue 30 e52668
RESEARCH ARTICLE

Shape memory, thermal conductivity, and mechanical property of polylactic acid and natural rubber composites reinforced by an inorganic thermal conductive network

Hui-Hong Shi

Hui-Hong Shi

College of Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, China

Contribution: Data curation (lead), Formal analysis (lead), ​Investigation (lead), Methodology (lead), Validation (lead), Writing - original draft (equal)

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Hui-Xian Ruan

Hui-Xian Ruan

College of Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, China

Contribution: Data curation (equal), Formal analysis (equal), ​Investigation (supporting)

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Zong-Ju Chen

Zong-Ju Chen

College of Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, China

Contribution: Data curation (supporting), Formal analysis (supporting), ​Investigation (supporting), Validation (supporting)

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Yi Zhang

Yi Zhang

College of Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, China

Contribution: Data curation (supporting), Formal analysis (supporting), Resources (supporting), Validation (supporting)

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Cheng-Long Zou

Cheng-Long Zou

College of Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, China

Contribution: Formal analysis (supporting), ​Investigation (supporting), Methodology (supporting), Resources (supporting), Software (supporting), Validation (supporting)

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Xiu-Cheng Zhang

Corresponding Author

Xiu-Cheng Zhang

College of Chemical Engineering and Resource Utilization, Key Laboratory for Molecular Design and preparation of flame retardant materials in Heilongjiang, Northeast Forestry University, Harbin, China

Correspondence

Xiu-Cheng Zhang, College of Chemical Engineering and Resource Utilization, Key Laboratory for Molecular Design and preparation of flame retardant materials in Heilongjiang, Northeast Forestry University, Harbin, 150040, China.

Email: [email protected]

Bing Liu, College of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi'an, 710021, Shaanxi Province, China.

Email: [email protected]

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Bing Liu

Corresponding Author

Bing Liu

College of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi'an, Shaanxi Province, China

Correspondence

Xiu-Cheng Zhang, College of Chemical Engineering and Resource Utilization, Key Laboratory for Molecular Design and preparation of flame retardant materials in Heilongjiang, Northeast Forestry University, Harbin, 150040, China.

Email: [email protected]

Bing Liu, College of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi'an, 710021, Shaanxi Province, China.

Email: [email protected]

Contribution: Writing - original draft (lead), Writing - review & editing (lead)

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Miao-Jun Xu

Miao-Jun Xu

College of Chemical Engineering and Resource Utilization, Key Laboratory for Molecular Design and preparation of flame retardant materials in Heilongjiang, Northeast Forestry University, Harbin, China

Contribution: Resources (equal), Software (equal), Validation (equal), Visualization (equal)

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Bin Li

Bin Li

College of Chemical Engineering and Resource Utilization, Key Laboratory for Molecular Design and preparation of flame retardant materials in Heilongjiang, Northeast Forestry University, Harbin, China

Contribution: Conceptualization (equal), Funding acquisition (lead), Project administration (lead), Resources (lead), Supervision (lead)

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First published: 25 May 2022
Citations: 4

Funding information: National Natural Science Foundation of China, Grant/Award Number: 51773031; The Programs for Science and Technology Development of Heilongjiang province, Grant/Award Number: GA15A101

Abstract

With the development and application of thermotropic shape memory polymer materials in the biomedical field, it is very crucial for these materials to improve their thermal conductivity efficiency and shape memory recovery rate by endowing them a high thermal conductivity. In our work, a PLA/NR/T-ZnOw/GR shape memory composite was prepared by melt blending with tetrapod zinc oxide whisker (T-ZnOw) and graphene (GR) as the double inorganic fillers and polylactic acid (PLA) and natural rubber (NR) as the polymer matrix. The synergism of T-ZnOw and GR constructs a three-dimensional (3D) thermal conductive network, making the thermal conductivity of PLA/NR/5wt%T-ZnOw/2.5wt%GR increase to 1.215 W∙(m∙K)−1. The addition of T-ZnOw reduces the agglomeration of GR in the PLA/NR matrix and the interfacial thermal resistance between the fillers and the matrix. It also improves the heat transfer rate, resulting in an excellent shape memory of PLA/NR/T-ZnOw/GR with a morphology recovery rate of ca. 96%, a fixed rate of 95% and high thermal stability. The presented biodegradable shape memory composite with the 3D thermal conductive network is promising in the fields of medical treatment and intelligent sensors.

CONFLICT OF INTEREST

The authors declare no conflict of interest.

DATA AVAILABILITY STATEMENT

Research data are not shared.

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