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Wu W, Wu W, Guo M, Wang R, Wang X, Gao Q. Synthesis of MPEG-b-PLLA Diblock Copolymers and Their Crystallization Performance with PDLA and PLLA Composite Films. MATERIALS (BASEL, SWITZERLAND) 2024; 17:2105. [PMID: 38730912 PMCID: PMC11084635 DOI: 10.3390/ma17092105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Revised: 04/18/2024] [Accepted: 04/20/2024] [Indexed: 05/13/2024]
Abstract
Methoxy poly(ethylene glycol)-block-poly(L-lactide) (MPEG-b-PLLA) has a wide range of applications in pharmaceuticals and biology, and its structure and morphology have been thoroughly studied. In the experiment, we synthesized MPEG-b-PLLA with different block lengths using the principle of ring-opening polymerization by controlling the amount of lactic acid added. The thermodynamic properties of copolymers and the crystallization properties of blends were studied separately. The crystallization kinetics of PDLA/MPEG-b-PLA and PLLA/MPEG-b-PLA composite films were studied using differential scanning calorimetry (DSC). The results indicate that the crystallization kinetics of composite films are closely related to the amount of block addition. The crystallinity of the sample first increases and then decreases with an increase in MPEG-b-PLLA content. These results were also confirmed in polarized optical microscope (POM) and wide-angle X-ray diffraction (WAXD) tests. When 3% MPEG-b-PLLA was added to the PDLA matrix, the blend exhibited the strongest crystallization performance.
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Affiliation(s)
- Wenjing Wu
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; (W.W.); (W.W.); (R.W.); (X.W.)
| | - Weixin Wu
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; (W.W.); (W.W.); (R.W.); (X.W.)
| | - Mingwei Guo
- College of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China;
| | - Ruizhe Wang
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; (W.W.); (W.W.); (R.W.); (X.W.)
| | - Xuanxuan Wang
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; (W.W.); (W.W.); (R.W.); (X.W.)
| | - Qinwei Gao
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; (W.W.); (W.W.); (R.W.); (X.W.)
- Jiangsu Key Laboratory for the Chemistry and Utilization of Agricultural and Forest Biomass, Nanjing Forestry University, Nanjing 210037, China
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Zhou D, Xu M, Gan Z, Yan XY, Ma Z, Zheng J, Dong XH. Discrete Diblock Copolymers with Precise Stereoconfiguration. Macromolecules 2023. [DOI: 10.1021/acs.macromol.2c02506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Affiliation(s)
- Dongdong Zhou
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, South China University of Technology, Guangzhou 510640, China
| | - Miao Xu
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, South China University of Technology, Guangzhou 510640, China
| | - Zhanhui Gan
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, South China University of Technology, Guangzhou 510640, China
| | - Xiao-Yun Yan
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, South China University of Technology, Guangzhou 510640, China
| | - Zhuang Ma
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, South China University of Technology, Guangzhou 510640, China
| | - Juncheng Zheng
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, South China University of Technology, Guangzhou 510640, China
| | - Xue-Hui Dong
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, South China University of Technology, Guangzhou 510640, China
- Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou 510640, China
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Competition effect of solid-state stretching induced orientation and phase separation on stereocomplex crystallization of PLLA/PDLA during annealing. POLYMER 2023. [DOI: 10.1016/j.polymer.2023.125739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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Stereocomplex crystallization of chiral hydroxyalkanoic acid-based biodegradable alternating copolyesters with two types of chiral centers and opposite monomer configurational combinations of L-D and D-L (S-R and R–S). POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Tsuji H, Nogata S, Gamo H, Hikima K, Matsuda A, Arakawa Y. Synthesis, stereocomplex crystallization, homo-crystallization, and thermal properties and degradation of enantiomeric aromatic poly(lactic acid)s, poly(mandelic acid)s. Polym Degrad Stab 2022. [DOI: 10.1016/j.polymdegradstab.2021.109803] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Tsuji H, Osanai K, Arakawa Y. Stereocomplex and individual crystallization behavior of symmetric or enantiomeric substituted Poly(lactic acid)s random copolymers with high crystallizabilities. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.124352] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Teixeira SS, Gama N, Cordeiro T, Barros-Timmons A, Dionísio M, Graça MP, Costa LC. Poly(l-lactic acid)/lithium ferrite composites: Electrical properties. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.124100] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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