Revisiting the Thermosensitivity of Poly(acrylamide-<italic style="font-style: italic">co</italic>-diacetone acrylamide)

Xin-ming Xing; Guang-ming Liu; Yan-wei Ding; Guang-zhao Zhang

doi:10.1007/s10118-014-1440-y

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Revisiting the Thermosensitivity of Poly(acrylamide-co-diacetone acrylamide)

PAPER | Updated：2021-06-21

- Revisiting the Thermosensitivity of Poly(acrylamide-co-diacetone acrylamide)
- Chinese Journal of Polymer Science Vol. 32, Issue 5, Pages: 531-539(2014)
- Affiliations：
  
  a.Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
  b.Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
- Author bio：
  
  **Guang-zhao Zhang (张广照), E-mail: gzzhang@ustc.edu.cn
- Funds：
- DOI：10.1007/s10118-014-1440-y
  CLC：
- Received：08 November 2013，
  
  Revised：2013-12-05，
  
  Accepted：12 December 2013，
  
  Published：2014-05
- Accepted：
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Xin-ming Xing, Guang-ming Liu, Yan-wei Ding, et al. Revisiting the Thermosensitivity of Poly(acrylamide-co-diacetone acrylamide)[J]. Chinese Journal of Polymer Science, 2014, 32(5): 531-539. DOI: 10.1007/s10118-014-1440-y.
DOI：

Xin-ming Xing, Guang-ming Liu, Yan-wei Ding, et al. Revisiting the Thermosensitivity of Poly(acrylamide-co-diacetone acrylamide)[J]. Chinese Journal of Polymer Science, 2014, 32(5): 531-539. DOI: 10.1007/s10118-014-1440-y. DOI：

摘要

Abstract

The lower critical solution temperature (LCST) behavior of poly(acrylamide-

-diacetone acrylamide) (poly(AM

-DAM)) copolymer in aqueous solutions was studied. The results demonstrate the LCST linearly decreases as the molar fraction of DAM (

DAM

) increases. In the range of

DAM

0.36

the transmittance increases as

DAM

decreases because the more hydrophilic copolymer chains can form looser aggregates with a lower refractive index. The transmittance exhibits a minimum when

DAM

is less than 0.28 as the chains form micelle-like structure with a size smaller than the wavelength. The LCST decreases with the initial polymer concentration

but it levels off when the polymer concentration is high enough. Moreover

no hysteresis can be observed in the change of transmittance during the heating-cooling process because no additional hydrogen bonds are formed in the collapsed state due to the steric hindrance of the large side groups in DAM units.

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Revisiting the Thermosensitivity of Poly(acrylamide-co-diacetone acrylamide)

DOI：10.1007/s10118-014-1440-y

摘要

Abstract

关键词

Keywords

references