Architecting Branch Structure in Terpolymer of CO<sub>2</sub>, Propylene Oxide and Phthalic Anhydride: An Enhancement in Thermal and Mechanical Performances

Wen-Jing Wang; Shu-Xian Ye; Jia-Xin Liang; Cong-Xiao Fan; Yong-Lan Zhu; Shuan-Jin Wang; Min Xiao; Yue-Zhong Meng

doi:10.1007/s10118-022-2686-4

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Architecting Branch Structure in Terpolymer of CO₂, Propylene Oxide and Phthalic Anhydride: An Enhancement in Thermal and Mechanical Performances

RESEARCH ARTICLE | Updated：2022-04-26

- Architecting Branch Structure in Terpolymer of CO₂, Propylene Oxide and Phthalic Anhydride: An Enhancement in Thermal and Mechanical Performances
- Chinese Journal of Polymer Science Vol. 40, Issue 5, Pages: 462-468(2022)
- Affiliations：
  
  The key laboratory of Low-carbon Chemistry & Energy Conservation of Guangdong Province, State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
- Author bio：
  
  stsxm@mail.sysu.edu.cn (M.X.)
  mengyzh@mail.sysu.edu.cn (Y.Z.M.)
- Funds：
- DOI：10.1007/s10118-022-2686-4
  CLC：
- Received：25 October 2021，
  
  Revised：2021-12-6，
  
  Accepted：25 December 2021，
  
  Online First：17 March 2022，
  
  Published：01 May 2022
- Accepted：
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Wang, W. J.; Ye, S. X.; Liang, J. X.; Fan, C. X.; Zhu, Y. L.; Wang, S. J.; Xiao, M.; Meng, Y. Z. Architecting branch structure in terpolymer of CO₂, propylene oxide and phthalic anhydride: an enhancement in thermal and mechanical performances. Chinese J. Polym. Sci. 2022, 40, 462–468 DOI: 10.1007/s10118-022-2686-4.

Wen-Jing Wang, Shu-Xian Ye, Jia-Xin Liang, et al. Architecting Branch Structure in Terpolymer of CO₂, Propylene Oxide and Phthalic Anhydride: An Enhancement in Thermal and Mechanical Performances[J]. Chinese Journal of Polymer Science, 2022, 40(5): 462-468. DOI: 10.1007/s10118-022-2686-4.
Wang, W. J.; Ye, S. X.; Liang, J. X.; Fan, C. X.; Zhu, Y. L.; Wang, S. J.; Xiao, M.; Meng, Y. Z. Architecting branch structure in terpolymer of CO₂, propylene oxide and phthalic anhydride: an enhancement in thermal and mechanical performances. Chinese J. Polym. Sci. 2022, 40, 462–468 DOI: 10.1007/s10118-022-2686-4. DOI：

Wen-Jing Wang, Shu-Xian Ye, Jia-Xin Liang, et al. Architecting Branch Structure in Terpolymer of CO₂, Propylene Oxide and Phthalic Anhydride: An Enhancement in Thermal and Mechanical Performances[J]. Chinese Journal of Polymer Science, 2022, 40(5): 462-468. DOI: 10.1007/s10118-022-2686-4. DOI：

摘要

We choose pyromellitic anhydride (PMDA) as branching agent in the terpolymerization of PA

PO and CO

to synthesize branched PPC-P. As expected

the incorporation of PMDA can effectively increase the MW and dramatically decrease the MFI. What is more

the branched PPC-P exhibits reasonable biodegradability for the family of biodegradable plastics.

Abstract

Poly(propylene carbonate phthalate) (PPC-P) is a chemically modified poly(propylene carbonate) (PPC) biodegradable thermoplastic by introducing phthalic anhydride (PA) as the third monomer into the copolymerization of propylene oxide (PO) and CO

. To enhance the thermal and mechanical properties of PPC-P

a branching agent pyromellitic anhydride (PMDA) was introduced into the terpolymerization of PO

PA and CO

. The resulting copolymers with branched structure

named branched PPC-P

can be obtained using metal-free Lewis pair consisting of triethyl borane (TEB) and bis(triphenylphosphine)iminium chloride (PPNCl) as catalyst. The products obtained were analyzed by NMR spectro- scopy and their thermal

mechanical properties and melt processability were evaluated by DSC

TGA

tensile test and melt flow index (MFI) measurement. The obtained branched PPC-P has a high molecular weight up to 156.0 kg·mol

−1

. It shows an increased glass transition tempera- ture (

) higher than 50 °C and an enhanced tensile strength as high as 38.9 MPa. Noteworthily

the MFI value decreases obviously

indicative of an improved melt strength arising from the branched structure and high molecular weight. What is more

the branched PPC-P exhibits reasonable biodegradability

which demonstrates the great potential as a new green thermoplastic for the family of biodegradable plastics.

关键词

Keywords

references

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⁰

Architecting Branch Structure in Terpolymer of CO2, Propylene Oxide and Phthalic Anhydride: An Enhancement in Thermal and Mechanical Performances

DOI：10.1007/s10118-022-2686-4

摘要

Abstract

关键词

Keywords

references

Architecting Branch Structure in Terpolymer of CO₂, Propylene Oxide and Phthalic Anhydride: An Enhancement in Thermal and Mechanical Performances