The Mobility of Threaded <italic style="font-style: italic">α</italic>-Cyclodextrins in PR Copolymer and Its Influences on Mechanical Properties

Zhi Yan; Lin Ye; Ai-ying Zhang; Zeng-guo Feng

doi:10.1007/s10118-017-1913-x

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The Mobility of Threaded α-Cyclodextrins in PR Copolymer and Its Influences on Mechanical Properties

Papers | Updated：2021-02-18

- The Mobility of Threaded α-Cyclodextrins in PR Copolymer and Its Influences on Mechanical Properties
- Chinese Journal of Polymer Science Vol. 35, Issue 6, Pages: 752-763(2017)
- Affiliations：
  
  a.School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
  b.Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, Beijing 100081, China
- Author bio：
  
  Lin Ye (叶霖), E-mail: yelin@bit.edu.cn
- Funds：
- DOI：10.1007/s10118-017-1913-x
  CLC：
- Received：01 November 2016，
  
  Revised：2016-12-8，
  
  Accepted：15 December 2016，
  
  Published：05 June 2017
- Accepted：
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Zhi Yan, Lin Ye, Ai-ying Zhang, et al. The Mobility of Threaded α-Cyclodextrins in PR Copolymer and Its Influences on Mechanical Properties[J]. Chinese Journal of Polymer Science, 2017, 35(6): 752-763. DOI: 10.1007/s10118-017-1913-x.
DOI：

Zhi Yan, Lin Ye, Ai-ying Zhang, et al. The Mobility of Threaded α-Cyclodextrins in PR Copolymer and Its Influences on Mechanical Properties[J]. Chinese Journal of Polymer Science, 2017, 35(6): 752-763. DOI: 10.1007/s10118-017-1913-x. DOI：

摘要

Abstract

The methylated polyrotaxane (MePR) copolymer was prepared

via

the methylation of hydroxyl of threaded

-cyclodextrin (

-CDs) in polyrotaxane (PR) copolymer by CH

I/NaH. Its structure was characterized by GPC

IR and NMR. The WXRD and TGA measurements showed the destruction of channel-like crystalline structure in MePR copolymer. The sliding of threaded

-CDs along PEG axis in PR and MePR copolymers was demonstrated by their dielectric spectra that also evidenced the presence of rotating of threaded

-CDs around PEG axis in MePR copolymer. The frequent and vigorous molecular mobility in MePR and PR copolymers was also verified by dynamic mechanical analysis (DMA) and rheological measurement

which was possibly assigned to the sliding and rotating of threaded

-CDs. DMA and rheological results showed that the mobility of

-CDs could simultaneously strengthen and toughen PR copolymer proved by stress-stain curves. In this paper

we report the CD mobility in PR and MePR copolymers. The macroscopic behaviors of PR copolymer

such as mechanical properties in solid state

were also found to be benefited from CD mobility.

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references

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The Mobility of Threaded α-Cyclodextrins in PR Copolymer and Its Influences on Mechanical Properties

DOI：10.1007/s10118-017-1913-x

摘要

Abstract

关键词

Keywords

references