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Li JX, Niu DY, Liu B, Xu PW, Yang WJ, Lemstra PJ, Ma PM. Improvement on the Mechanical Performance and Resistance Towards Hydrolysis of Poly(glycolic acid) via Solid-state Drawing. CHINESE JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1007/s10118-022-2760-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Assessment of structural modification and time-dependent behavior of Poly (lactic acid) based composites upon hydrolytic degradation. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Kowalewska A, Herc AS, Bojda J, Nowacka M, Svyntkivska M, Piorkowska E, Kaczorowski W, Szymański W. Phase Structure and Properties of Ternary Polylactide/Poly(methyl methacrylate)/Polysilsesquioxane Blends. Polymers (Basel) 2021; 13:1033. [PMID: 33810345 PMCID: PMC8036706 DOI: 10.3390/polym13071033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 03/15/2021] [Accepted: 03/19/2021] [Indexed: 11/17/2022] Open
Abstract
Ternary blends of polylactide (PLA, 90 wt.%) and poly(methyl methacrylate) (PMMA, 10 wt.%) with functionalized polysilsesquioxanes (LPSQ-R) were obtained by solution blending. R groups in LPSQ containing hydroxyethyl (LPSQ-OH), methylglycolic (LPSQ-COOMe) and pentafluorophenyl (LPSQ-F5) moieties of different chemical properties were designed to modify PLA blends with PMMA. The effect of the type of LPSQ-R and their content, 1-3 wt.%, on the structure of the blends was studied with scanning electron microscopy (SEM) combined with energy dispersive spectroscopy (SEM-EDS), dynamic mechanical thermal analysis (DMTA) and Raman spectroscopy. Differential scanning calorimetry (DSC) and tensile tests also showed various effects of LPSQ-R on the thermal and mechanical properties of the blends. Depth-sensing indentation was used to resolve spatially the micro- and nano-scale mechanical properties (hardness and elastic behaviour) of the blends. The results showed clearly that LPSQ-R modulate the structure and properties of the blends.
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Affiliation(s)
- Anna Kowalewska
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, Poland
| | - Agata S Herc
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, Poland
| | - Joanna Bojda
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, Poland
| | - Maria Nowacka
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, Poland
| | - Mariia Svyntkivska
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, Poland
| | - Ewa Piorkowska
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, Poland
| | - Witold Kaczorowski
- Institute of Materials Science and Engineering, Lodz University of Technology, Stefanowskiego 1/15, 90-924 Lodz, Poland
| | - Witold Szymański
- Institute of Materials Science and Engineering, Lodz University of Technology, Stefanowskiego 1/15, 90-924 Lodz, Poland
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Sayko R, Wang Z, Liang H, Becker ML, Dobrynin AV. Degradation of Block Copolymer Films Confined in Elastic Media: Molecular Dynamics Simulations. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ryan Sayko
- Department of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599, United States
| | - Zilu Wang
- Department of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599, United States
| | - Heyi Liang
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
| | - Matthew L. Becker
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Andrey V. Dobrynin
- Department of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599, United States
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Souza AG, Ferreira RR, Harada J, Rosa DS. Field performance on lettuce crops of poly(butylene adipate‐co‐terephthalate)/polylactic acid as alternative biodegradable composites mulching films. J Appl Polym Sci 2020. [DOI: 10.1002/app.50020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Alana G. Souza
- Centro de Engenharia, Modelagem e Ciências Sociais Aplicadas CECS/Universidade Federal do ABC (UFABC) Santo André Brazil
| | - Rafaela R. Ferreira
- Centro de Engenharia, Modelagem e Ciências Sociais Aplicadas CECS/Universidade Federal do ABC (UFABC) Santo André Brazil
| | - Julio Harada
- Centro de Engenharia, Modelagem e Ciências Sociais Aplicadas CECS/Universidade Federal do ABC (UFABC) Santo André Brazil
| | - Derval S. Rosa
- Centro de Engenharia, Modelagem e Ciências Sociais Aplicadas CECS/Universidade Federal do ABC (UFABC) Santo André Brazil
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Shirahase T, Akasaka S, Asai S. Organic solvent-free fabrication of mesoporous polymer monolith from miscible PLLA/PMMA blend. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122742] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Yu X, Jin XZ, Huang T, Zhang N, Li XY, Wang Y. Poly(methyl methacrylate)-induced Microstructure and Hydrolysis Behavior Changes of Poly(L-lactic acid)/Carbon Nanotubes Composites. CHINESE JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1007/s10118-019-2323-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Hsu TG, Zhou J, Su HW, Schrage BR, Ziegler CJ, Wang J. A Polymer with "Locked" Degradability: Superior Backbone Stability and Accessible Degradability Enabled by Mechanophore Installation. J Am Chem Soc 2020; 142:2100-2104. [PMID: 31940198 DOI: 10.1021/jacs.9b12482] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Though numerous applications require degradable polymers, there are surprisingly few polymer systems that combine superior stability and controllable degradability. Particularly, the degradability of a conventional degradable polymer is typically enabled by cleavable groups on the backbone, which can be attacked by stimuli in ambient conditions, causing undesirable material deterioration. Here we report a general strategy to overcome this issue: "locking" the degradability during handling and use of the polymers and "unlocking" it when degradation is needed. This strategy is demonstrated with a cyclobutane-fused lactone (CBL) polymer. The cyclobutane keeps polymer backbone intact under conditions that hydrolyze the lactone and allows the ester group to be recovered when undesirable hydrolysis occurs. When backbone degradation is needed, the degradability can be unlocked by mechanochemical activation that converts the polyCBL into a linear polyester. The rare combination of two intrinsically conflicting properties, i.e., backbone stability and accessible degradability, can make this polymer a potential option for new sustainable materials.
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Affiliation(s)
- Tze-Gang Hsu
- Department of Polymer Science , The University of Akron , Akron , Ohio 44325 , United States
| | - Junfeng Zhou
- Department of Polymer Science , The University of Akron , Akron , Ohio 44325 , United States
| | - Hsin-Wei Su
- Department of Polymer Science , The University of Akron , Akron , Ohio 44325 , United States
| | - Briana R Schrage
- Department of Chemistry , The University of Akron , Akron , Ohio 44325 , United States
| | - Christopher J Ziegler
- Department of Chemistry , The University of Akron , Akron , Ohio 44325 , United States
| | - Junpeng Wang
- Department of Polymer Science , The University of Akron , Akron , Ohio 44325 , United States
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Effect of segment structures on the hydrolytic degradation behaviors of totally degradable poly(L‐lactic acid)‐based copolymers. J Appl Polym Sci 2019. [DOI: 10.1002/app.47887] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Anakabe J, Orue A, Zaldua Huici AM, Eceiza A, Arbelaiz A. Properties of PLA/PMMA blends with high polylactide content prepared by reactive mixing in presence of poly(styrene-co-glycidyl methacrylate) copolymer. J Appl Polym Sci 2018. [DOI: 10.1002/app.46825] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- J. Anakabe
- Leartiker Elikagaien Teknologia; Xemein Etorbidea 12, 48270 Markina-Xemein Spain
| | - A. Orue
- Faculty of Engineering, Chemical & Environmental Engineering Department, “Materials + Technologies” Group (GMT); University of the Basque Country UPV/EHU; Plaza Europa 1, 20018 Donostia-San Sebastian Spain
| | - A. M. Zaldua Huici
- Leartiker Elikagaien Teknologia; Xemein Etorbidea 12, 48270 Markina-Xemein Spain
| | - A. Eceiza
- Faculty of Engineering, Chemical & Environmental Engineering Department, “Materials + Technologies” Group (GMT); University of the Basque Country UPV/EHU; Plaza Europa 1, 20018 Donostia-San Sebastian Spain
| | - A. Arbelaiz
- Faculty of Engineering, Chemical & Environmental Engineering Department, “Materials + Technologies” Group (GMT); University of the Basque Country UPV/EHU; Plaza Europa 1, 20018 Donostia-San Sebastian Spain
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