Photo-grafting Poly(acrylic acid) onto Poly(lactic acid) Chains in Solution

Jia-Xing Wang; Yan-Bin Huang; Wan-Tai Yang

doi:10.1007/s10118-019-2308-y

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Photo-grafting Poly(acrylic acid) onto Poly(lactic acid) Chains in Solution

ARTICLE | Updated：2019-09-12

- Photo-grafting Poly(acrylic acid) onto Poly(lactic acid) Chains in Solution
- Chinese Journal of Polymer Science Vol. 38, Issue 2, Pages: 137-142(2020)
- Affiliations：
  
  Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
- Author bio：
  
  yanbin@tsinghua.edu.cn
- Funds：
- DOI：10.1007/s10118-019-2308-y
  CLC：
- Received：12 May 2019，
  
  Revised：2019-5-23，
  
  Accepted：25 May 2019，
  
  Online First：12 September 2019，
  
  Published：2020-02
- Accepted：
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Wang, J. X.; Huang, Y. B.; Yang, W. T. Photo-grafting poly(acrylic acid) onto poly(lactic acid) chains in solution. Chinese J. Polym. Sci. 2020, 38, 137–142.

Jia-Xing Wang, Yan-Bin Huang, Wan-Tai Yang. Photo-grafting Poly(acrylic acid) onto Poly(lactic acid) Chains in Solution[J]. Chinese Journal of Polymer Science, 2020, 38(2): 137-142.
Wang, J. X.; Huang, Y. B.; Yang, W. T. Photo-grafting poly(acrylic acid) onto poly(lactic acid) chains in solution. Chinese J. Polym. Sci. 2020, 38, 137–142. DOI： 10.1007/s10118-019-2308-y.

Jia-Xing Wang, Yan-Bin Huang, Wan-Tai Yang. Photo-grafting Poly(acrylic acid) onto Poly(lactic acid) Chains in Solution[J]. Chinese Journal of Polymer Science, 2020, 38(2): 137-142. DOI： 10.1007/s10118-019-2308-y.

摘要

Abstract

Poly(lactic acid) (PLA) is one of the most important bio-plastics

and chemical modification of the already-polymerized poly(lactic acid) chains may enable optimization of its material properties and expand its application areas. In this study

we demonstrated that poly(lactic acid) can be readily dissolved in acrylic acid at room temperature

and acrylic acid can be graft-polymerized onto poly(lactic acid) chains in solution with the help of photoinitiator benzophenone under 254 nm ultraviolet (UV) irradiation. Similar photo-grafting polymerization of acrylic acid (PAA) has only been studied before in the surface modification of polymer films. The graft ratio could be controlled by various reaction parameters

including irradiation time

benzophenone content

and monomer/polymer ratios. This photo-grafting reaction resulted in high graft ratio (graft ratio PAA/PLA up to 180%) without formation of homopolymers of acrylic acid. When the PAA/PLA graft ratio was higher than 100%

the resulting PLA-

-PAA polymer was found dispersible in water. The pros and cons of the photo-grafting reaction were also discussed.

关键词

Keywords

references

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