|
1
|
Gao J, Wang K, Xu N, Li L, Ma Z, Zhang Y, Xiang K, Pang S, Pan L, Li T. Influence of a Multiple Epoxy Chain Extender on the Rheological Behavior, Crystallization, and Mechanical Properties of Polyglycolic Acid. Polymers (Basel) 2023; 15:2764. [PMID: 37447410 DOI: 10.3390/polym15132764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 06/15/2023] [Accepted: 06/16/2023] [Indexed: 07/15/2023] Open
Abstract
This study investigated the impact of a multiple epoxy chain extender (ADR) on the rheological behavior, crystallization, and mechanical properties of polyglycolic acid (PGA). Tests of the torque and melt mass flow rate and dynamic rheological analysis were conducted to study the rheological behavior of PGA modified with ADR. The rheological results of the modified PGA showed a significantly increased viscosity and storage modulus with an increase in the ADR amount, which could be attributed to the chain extension/branching reactions between PGA and ADR. It was proved that ADR could be used as an efficient chain extender for tailoring the rheological performance of PGA. The Han plot of the modified PGA showed a transition of viscous behavior to elastic behavior, while the ADR content was increased from 0 to 0.9 phr. The formation of long-chain branches (LCBs) was confirmed via the Cole-Cole plot and weighted relaxation spectrum, wherein the LCBs substantially changed the rheological behavior of the modified PGA. The vGP plots predicted a star-type topological structure for the LCBs. The results of non-isothermal crystallization kinetics suggested that the crystallization of the modified PGA was predominantly homogeneous nucleation and three-dimensional growth. The crystallinity decreased slightly with the increase in the ADR amount. Compared to neat PGA, the modified PGA samples exhibited better tensile and flexural performances.
Collapse
Affiliation(s)
- Jianfeng Gao
- School of Materials Science and Engineering, Hainan University, Haikou 570228, China
| | - Kai Wang
- School of Materials Science and Engineering, Hainan University, Haikou 570228, China
| | - Nai Xu
- School of Materials Science and Engineering, Hainan University, Haikou 570228, China
| | - Luyao Li
- School of Materials Science and Engineering, Hainan University, Haikou 570228, China
| | - Zhao Ma
- School of Materials Science and Engineering, Hainan University, Haikou 570228, China
| | - Yipeng Zhang
- School of Materials Science and Engineering, Hainan University, Haikou 570228, China
| | - Kun Xiang
- School of Materials Science and Engineering, Hainan University, Haikou 570228, China
| | - Sujuan Pang
- School of Science, Hainan University, Haikou 570228, China
| | - Lisha Pan
- School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
| | - Tan Li
- Shiner National and Local Joint Engineering and Research Center, Shiner Industrial Co., Ltd., Haikou 570228, China
| |
Collapse
|
|
2
|
Sun X, Chen L, Wang R, Jiang M, Sun M, Liang W. Control of hydrolytic degradation of polyglycolic acid using chain extender and anti‐hydrolysis agent. J Appl Polym Sci 2022. [DOI: 10.1002/app.52398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xiaojie Sun
- National Institute of Clean and Low‐Carbon Energy Beijing China
| | - Lanlan Chen
- National Institute of Clean and Low‐Carbon Energy Beijing China
| | - Rong Wang
- National Institute of Clean and Low‐Carbon Energy Beijing China
| | - Meng Jiang
- National Institute of Clean and Low‐Carbon Energy Beijing China
| | - Miaomiao Sun
- National Institute of Clean and Low‐Carbon Energy Beijing China
| | - Wenbin Liang
- National Institute of Clean and Low‐Carbon Energy Beijing China
| |
Collapse
|