In-situ solution polymerization and properties of chitosan-graphene oxide/thermoplastic polyurethane composites

ZHANG Zhaoyan; MA Shuai; LU Xin; ZHENG Yuying; LIN Tengfei

doi:10.13801/j.cnki.fhclxb.20200302.002

Volume 37 Issue 11

Nov. 2020

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ZHANG Zhaoyan, MA Shuai, LU Xin, et al. In-situ solution polymerization and properties of chitosan-graphene oxide/thermoplastic polyurethane composites[J]. Acta Materiae Compositae Sinica, 2020, 37(11): 2726-2734. doi: 10.13801/j.cnki.fhclxb.20200302.002

Citation:

ZHANG Zhaoyan, MA Shuai, LU Xin, et al. In-situ solution polymerization and properties of chitosan-graphene oxide/thermoplastic polyurethane composites[J]. Acta Materiae Compositae Sinica, 2020, 37(11): 2726-2734. doi: 10.13801/j.cnki.fhclxb.20200302.002

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In-situ solution polymerization and properties of chitosan-graphene oxide/thermoplastic polyurethane composites

doi: 10.13801/j.cnki.fhclxb.20200302.002

ZHANG Zhaoyan¹,
MA Shuai¹,
LU Xin³,
ZHENG Yuying^{1, 2, 3
,
,},
LIN Tengfei^{1
,
,}

1.
College of Materials Science and Engineering, Fuzhou University, Fuzhou 350108, China
2.
Fujian Chenqi New Materials Technology Co. Ltd., Quanzhou 362200, China
3.
Fujian Xiangsu New Materials Key Laboratory, Quanzhou 362211, China

Received Date: 2019-12-10
Accepted Date: 2020-02-18

Available Online: 2020-03-03

Publish Date: 2020-11-15

Abstract

Abstract

An improved in-situ solution polymerization method was used in order to prepare the thermoplastic polyurethane (TPU) composite with high mechanical properties, barrier properties and thermal conductivity. Graphene oxide modified by chitosan (CS-GO) was grafted onto TPU prepolymer, then CS-GO/TPU composite was synthesized by chain extension reaction. The microstructure of CS-GO was characterized by FTIR, XRD and FESEM. The properties of CS-GO/TPU composites were tested by universal testing machine, oxygen transmission instrument and thermal conductivity meter. The results show that there is a hydrogen bond between CS and GO, and the dispersibility of CS-GO in the TPU matrix is better than GO. The enhancement of barrier property of CS-GO/TPU composites is due to the uniform dispersion of CS-GO which can effectively block the penetration of oxygen. The interaction between CS-GO and TPU matrix has positive effect on the transmission of stress load and the formation of a thermally conductive network. Compared with the pristine TPU, when mass fraction of the CS-GO is 1wt%, the tensile strength and elongation at break of CS-GO/TPU composites are increased by 106.8% and 111.2%, respectively; the thermal conductivity is 1.55 times higher than the pristine TPU.
- thermoplastic polyurethane,
- chitosan,
- graphene oxide,
- in-situ polymerization,
- mechanical property,
- barrier property,
- thermal conductivity
Long Abstrsct
Innovation Points

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References(20)

References

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