Influence of carboxylic multi-walled carbon nanotubes on the interface state and properties of PBAT/PLA reactive compatibilization system

WANG Ping; SONG Jie; LIU Jiajia; TIAN Hongyu; LU Haibing; ZHU Lufang; YANG Li; SHI Min; CAO Tian

doi:10.13801/j.cnki.fhclxb.20230110.002

Volume 40 Issue 10

Oct. 2023

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WANG Ping, SONG Jie, LIU Jiajia, et al. Influence of carboxylic multi-walled carbon nanotubes on the interface state and properties of PBAT/PLA reactive compatibilization system[J]. Acta Materiae Compositae Sinica, 2023, 40(10): 5772-5781. doi: 10.13801/j.cnki.fhclxb.20230110.002

Citation:

WANG Ping, SONG Jie, LIU Jiajia, et al. Influence of carboxylic multi-walled carbon nanotubes on the interface state and properties of PBAT/PLA reactive compatibilization system[J]. Acta Materiae Compositae Sinica, 2023, 40(10): 5772-5781. doi: 10.13801/j.cnki.fhclxb.20230110.002

Citation:

WANG Ping, SONG Jie, LIU Jiajia, et al. Influence of carboxylic multi-walled carbon nanotubes on the interface state and properties of PBAT/PLA reactive compatibilization system[J]. Acta Materiae Compositae Sinica, 2023, 40(10): 5772-5781. doi: 10.13801/j.cnki.fhclxb.20230110.002

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Influence of carboxylic multi-walled carbon nanotubes on the interface state and properties of PBAT/PLA reactive compatibilization system

doi: 10.13801/j.cnki.fhclxb.20230110.002

WANG Ping^{1, 3, 4
,
,},
SONG Jie^{1, 4},
LIU Jiajia^{1, 4},
TIAN Hongyu^{1, 4},
LU Haibing^{1, 4},
ZHU Lufang^{1, 4},
YANG Li^{1, 4},
SHI Min^{2, 4},
CAO Tian^{1, 4}

1.
School of Materials and Chemical Engineering, Anhui Jianzhu University, Hefei 230601, China
2.
School of Mathematics and Physics, Anhui Jianzhu University, Hefei 230601, China
3.
Anhui Province International Research Center on Advanced Building Materials, Anhui Jianzhu University, Hefei 230601, China
4.
Special Wire and Cable National Local Joint Engineering Research Center Anhui Jianzhu University Branch Center, Hefei 230601, China

Funds: National Natural Science Foundation of China (51903002); Major Science and Technology Projects of Anhui Province (202103a05020031); University Natural Science Outstanding Youth Research Projects of Anhui Province (2022AH020024); University Major Research Projects in Philosophy and Social Sciences of Anhui Province (2022AH040047); Anhui Jianzhu University PhD Startup Fund (2019QDZ22); Excellent Youth Projects of Anhui Provincal Natural Science Foundation (2308085Y34); Research Fund for Postdoctoral Researchers in Anhui Province (2020B413); University Provincial Natural Science Research Projects of Anhui Province (YJS20210509)

Received Date: 2022-11-08
Accepted Date: 2022-12-25
Rev Recd Date: 2022-12-14

Available Online: 2023-01-10

Publish Date: 2023-10-15

Abstract

Abstract

The polylactic acid (PLA) has great potential in the preparation of environmentally friendly dielectric materials due to its biodegradability and high strength, but low dielectric constant limits its wide application in this field. The carboxylic multi-walled carbon nanotubes (MWCNTs—COOH), epoxy-based chain extender (ADR) and poly(butylene adipate-co-terephthalate) (PBAT) were introduced into PLA by melt blending to prepare MWCNTs—COOH-ADR-PBAT/PLA composites. The effects of MWCNTs—COOH on the inter-molecular chain interactions, processing, crystallization, dynamic mechanical, mechanical and dielectric properties of the PBAT/PLA reactive compatibilization system were studied by FTIR, Torque rheometer, DSC, DMA, electron universal testing machine, SEM and LCR dielectric measuring instrument, etc. The results show that the carboxyl group in MWCNTs—COOH preferentially reacts with the reactive compatibilizer during the blending process, which reduces the catalytic compatibilization efficiency of the reactive compatibilizer on the interface between PLA and PBAT. At the same time, MWCNTs—COOH preferentially disperse at the two-phase interface under the drive of dynamics and thermodynamics, giving the material a better rigid toughness balance, while significantly improving the dielectric properties of the material. When the MWCNTs—COOH content is 4wt%, the dielectric constant and dielectric loss of MWCNTs—COOH-ADR-PBAT/PLA composite at 100 Hz were 5.35 and 0.06 respectively, and the material had good comprehensive properties.
- poly(lactic acid),
- poly(butylene adipate-co-terephthalate),
- carboxylic multi-walled carbon nanotubes,
- melt blending,
- dielectric properties
Long Abstrsct
Innovation Points

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References(25)

References

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