Rheological Behaviors of a Series of Hyperbranched Polyethers

Xue-pei Miao; Yan-shuang Guo; Li-fan He; Yan Meng; Xiao-yu Li

doi:10.1007/s10118-015-1707-y

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Rheological Behaviors of a Series of Hyperbranched Polyethers

PAPER | Updated：2021-06-21

- Rheological Behaviors of a Series of Hyperbranched Polyethers
- Chinese Journal of Polymer Science Vol. 33, Issue 11, Pages: 1574-1585(2015)
- Affiliations：
  
  a.Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China
  b.TA Instruments-Waters LLC (Beijing), 9/F, Tongniu International Manson, Beijing 100026, China
  c.State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
- Author bio：
  
  **Yan Meng (孟焱), E-mail: mengyan@mail.buct.edu.cn
  Xiao-yu Li (李效玉), E-mail: lixy@mail.buct.edu.cn
- Funds：
- DOI：10.1007/s10118-015-1707-y
  CLC：
- Received：18 April 2015，
  
  Revised：2015-06-20，
  
  Accepted：30 June 2015，
  
  Published：2015-11
- Accepted：
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Xue-pei Miao, Yan-shuang Guo, Li-fan He, et al. Rheological Behaviors of a Series of Hyperbranched Polyethers[J]. Chinese Journal of Polymer Science, 2015, 33(11): 1574-1585.
DOI：

Xue-pei Miao, Yan-shuang Guo, Li-fan He, et al. Rheological Behaviors of a Series of Hyperbranched Polyethers[J]. Chinese Journal of Polymer Science, 2015, 33(11): 1574-1585. DOI： 10.1007/s10118-015-1707-y.

摘要

Abstract

Hyperbranched polyethers with different structures and molecular weights (MW) were synthesized using the A

approach by varying monomer ratio

A2 structure

and reaction time. Effects of backbone structure and MW on melt rheological behaviors were investigated by both small amplitude oscillatory shear and steady shear measurements. Master curves were constructed using the time-temperature superposition principle and compared. In the reduced frequency range covered

″~lg(

) always show a slope of 1.0

suggesting a terminal zone behavior; in contrast

unexpected step changes or plateaus are observed on lg

′ master curves. Effects of backbone structure and MW on master curves were discussed. The Cox-Merz rule was tested at different temperatures and was found to be applicable when flow instability was absent.

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