Citation: Hong Yao, Jia-li Niu, Jie Zhang, Nan-ying Ning, Xiao-qiu Yang, Ming Tian, Xiao-li Sun, Li-qun Zhang, Shou-ke Yan. Morphologies and Mechanical Properties of Cis-1,4-butadiene Rubber/Polyethylene Blends[J]. Chinese Journal of Polymer Science, ;2016, 34(7): 820-829. doi: 10.1007/s10118-016-1794-4 shu

Morphologies and Mechanical Properties of Cis-1,4-butadiene Rubber/Polyethylene Blends

a.
State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
b.
Beijing National Laboratory for Molecular Sciences, Department of Polymer Science and Engineering & the Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
c.
Basic Research Service, MOST, Beijing 100862, China

Corresponding author: Ming Tian, tianm@mail.buct.edu.cn Shou-ke Yan, skyan@mail.buct.edu.cn
Received Date: 2 January 2016
Revised Date: 16 February 2016
Accepted Date: 16 February 2016

Fund Project: the National Natural Science Foundation of China 51221002the National Natural Science Foundation of China 21174014

The mechanical properties and phase morphologies of cis-1,4-butadiene rubber (BR) blended with polyethylene (PE) at different blend ratios were studied. The tensile test results show that the PE exhibits excellent reinforcing capabilities towards BR. Blending BR with PE results in a remarkable enhancement of tensile strength, modulus and the elongation at break simultaneously. An increment of tensile strength from 1.11 MPa to 16.26 MPa was achieved by incorporation of 40 wt% PE in the blends. The modulus and elongation at break of 40/60 PE/BR blends are also about 5 times higher than those of the pure BR treated under exactly the same conditions. The tear test indicates that the tear strength also increases with the increase of PE content. It reaches 58.38 MPa for the 40/60 PE/BR blend, which is approximately 10 times higher than that of the pure BR. Morphological study demonstrates that the PE forms elongated microdomains finely dispersed in the BR matrix when its content is over 30 wt%, which corresponds to the remarkably enhanced mechanical properties. According to the results, reinforcement mechanism of PE toward BR dependent on the microstructure has been discussed and two different mechanisms have been proposed.
- Polyethylene,
- Cis-1,4-butadiene rubber,
- Blend,
- Mechanical property,
- Morphology
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