1
|
Aarsen C, Liguori A, Mattsson R, Sipponen MH, Hakkarainen M. Designed to Degrade: Tailoring Polyesters for Circularity. Chem Rev 2024; 124:8473-8515. [PMID: 38936815 PMCID: PMC11240263 DOI: 10.1021/acs.chemrev.4c00032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 04/30/2024] [Accepted: 06/11/2024] [Indexed: 06/29/2024]
Abstract
A powerful toolbox is needed to turn the linear plastic economy into circular. Development of materials designed for mechanical recycling, chemical recycling, and/or biodegradation in targeted end-of-life environment are all necessary puzzle pieces in this process. Polyesters, with reversible ester bonds, are already forerunners in plastic circularity: poly(ethylene terephthalate) (PET) is the most recycled plastic material suitable for mechanical and chemical recycling, while common aliphatic polyesters are biodegradable under favorable conditions, such as industrial compost. However, this circular design needs to be further tailored for different end-of-life options to enable chemical recycling under greener conditions and/or rapid enough biodegradation even under less favorable environmental conditions. Here, we discuss molecular design of the polyester chain targeting enhancement of circularity by incorporation of more easily hydrolyzable ester bonds, additional dynamic bonds, or degradation catalyzing functional groups as part of the polyester chain. The utilization of polyester circularity to design replacement materials for current volume plastics is also reviewed as well as embedment of green catalysts, such as enzymes in biodegradable polyester matrices to facilitate the degradation process.
Collapse
Affiliation(s)
- Celine
V. Aarsen
- Department
of Fibre and Polymer Technology, KTH Royal
Institute of Technology, Teknikringen 58, 100 44 Stockholm, Sweden
| | - Anna Liguori
- Department
of Fibre and Polymer Technology, KTH Royal
Institute of Technology, Teknikringen 58, 100 44 Stockholm, Sweden
- Department
of Chemistry “G. Ciamician”, University of Bologna, Via Selmi 2, 40126 Bologna, Italy
| | - Rebecca Mattsson
- Department
of Fibre and Polymer Technology, KTH Royal
Institute of Technology, Teknikringen 58, 100 44 Stockholm, Sweden
| | - Mika H. Sipponen
- Department
of Materials and Environmental Chemistry, Stockholm University, Svante Arrhenius väg 16C, 106
91 Stockholm, Sweden
| | - Minna Hakkarainen
- Department
of Fibre and Polymer Technology, KTH Royal
Institute of Technology, Teknikringen 58, 100 44 Stockholm, Sweden
| |
Collapse
|
2
|
Rizzarelli P, Leanza M, Rapisarda M. Investigations into the characterization, degradation, and applications of biodegradable polymers by mass spectrometry. MASS SPECTROMETRY REVIEWS 2023. [PMID: 38014928 DOI: 10.1002/mas.21869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 10/10/2023] [Accepted: 11/08/2023] [Indexed: 11/29/2023]
Abstract
Biodegradable polymers have been getting more and more attention because of their contribution to the plastic pollution environmental issues and to move towards a circular economy. Nevertheless, biodegradable materials still exhibit various disadvantages restraining a widespread use in the market. Therefore, additional research efforts are required to improve their performance. Mass spectrometry (MS) affords a relevant contribution to optimize biodegradable polymer synthesis, to confirm macromolecular structures, to examine along the time the progress of degradation processes and highlight advantages and drawbacks in the extensive applications. This review aims to provide an overview of the MS investigations carried out to support the synthesis of biodegradable polymers, with helpful information on undesirable products or polymerization mechanism, to understand deterioration pathways by the structure of degradation products and to follow drug release and pharmacokinetic. Additionally, it summarizes MS studies addressed on environmental and health issues related to the extensive use of plastic materials, that is, potential migration of additives or microplastics identification and quantification. The paper is focused on the most significant studies relating to synthetic and microbial biodegradable polymers published in the last 15 years, not including agro-polymers such as proteins and polysaccharides.
Collapse
Affiliation(s)
- Paola Rizzarelli
- Consiglio Nazionale delle Ricerche (CNR), Istituto per i Polimeri Compositi e Biomateriali (IPCB), ede Secondaria di Catania, Catania, Italy
| | - Melania Leanza
- Consiglio Nazionale delle Ricerche (CNR), Istituto per i Polimeri Compositi e Biomateriali (IPCB), ede Secondaria di Catania, Catania, Italy
| | - Marco Rapisarda
- Consiglio Nazionale delle Ricerche (CNR), Istituto per i Polimeri Compositi e Biomateriali (IPCB), ede Secondaria di Catania, Catania, Italy
| |
Collapse
|
3
|
Rizzarelli P, Rapisarda M. Matrix-Assisted Laser Desorption and Electrospray Ionization Tandem Mass Spectrometry of Microbial and Synthetic Biodegradable Polymers. Polymers (Basel) 2023; 15:polym15102356. [PMID: 37242931 DOI: 10.3390/polym15102356] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/10/2023] [Accepted: 05/16/2023] [Indexed: 05/28/2023] Open
Abstract
The in-depth structural and compositional investigation of biodegradable polymeric materials, neat or partly degraded, is crucial for their successful applications. Obviously, an exhaustive structural analysis of all synthetic macromolecules is essential in polymer chemistry to confirm the accomplishment of a preparation procedure, identify degradation products originating from side reactions, and monitor chemical-physical properties. Advanced mass spectrometry (MS) techniques have been increasingly applied in biodegradable polymer studies with a relevant role in their further development, valuation, and extension of application fields. However, single-stage MS is not always sufficient to identify unambiguously the polymer structure. Thus, tandem mass spectrometry (MS/MS) has more recently been employed for detailed structure characterization and in degradation and drug release monitoring of polymeric samples, among which are biodegradable polymers. This review aims to run through the investigations carried out by the soft ionization technique matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) and electrospray ionization mass spectrometry (ESI-MS) MS/MS in biodegradable polymers and present the resulting information.
Collapse
Affiliation(s)
- Paola Rizzarelli
- Institute for Polymers, Composites and Biomaterials, Consiglio Nazionale delle Ricerche (CNR), Via Paolo Gaifami 18, 95126 Catania, Italy
| | - Marco Rapisarda
- Institute for Polymers, Composites and Biomaterials, Consiglio Nazionale delle Ricerche (CNR), Via Paolo Gaifami 18, 95126 Catania, Italy
| |
Collapse
|
4
|
Wang Q, Cao M, Kan X, Lv A, Du F, Li Z. Ring‐opening polymerization of 1,4‐oxathian‐2‐one and its copolymerization with δ‐valerolactone. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20220054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Qi‐Yuan Wang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Polymer Chemistry & Physics of Ministry of Education, Department of Polymer Science & Engineering, College of Chemistry and Molecular Engineering, Center for Soft Matter Science and Engineering Peking University Beijing China
| | - Meng‐Xue Cao
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Polymer Chemistry & Physics of Ministry of Education, Department of Polymer Science & Engineering, College of Chemistry and Molecular Engineering, Center for Soft Matter Science and Engineering Peking University Beijing China
| | - Xiao‐Wei Kan
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Polymer Chemistry & Physics of Ministry of Education, Department of Polymer Science & Engineering, College of Chemistry and Molecular Engineering, Center for Soft Matter Science and Engineering Peking University Beijing China
| | - An Lv
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Polymer Chemistry & Physics of Ministry of Education, Department of Polymer Science & Engineering, College of Chemistry and Molecular Engineering, Center for Soft Matter Science and Engineering Peking University Beijing China
| | - Fu‐Sheng Du
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Polymer Chemistry & Physics of Ministry of Education, Department of Polymer Science & Engineering, College of Chemistry and Molecular Engineering, Center for Soft Matter Science and Engineering Peking University Beijing China
| | - Zi‐Chen Li
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Polymer Chemistry & Physics of Ministry of Education, Department of Polymer Science & Engineering, College of Chemistry and Molecular Engineering, Center for Soft Matter Science and Engineering Peking University Beijing China
| |
Collapse
|
5
|
Loskot J, Jezbera D, Bezrouk A, Doležal R, Andrýs R, Francová V, Miškář D, Myslivcová Fučíková A. Raman Spectroscopy as a Novel Method for the Characterization of Polydioxanone Medical Stents Biodegradation. MATERIALS 2021; 14:ma14185462. [PMID: 34576686 PMCID: PMC8467320 DOI: 10.3390/ma14185462] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 09/17/2021] [Accepted: 09/17/2021] [Indexed: 12/24/2022]
Abstract
Polydioxanone (PPDX), as an FDA approved polymer in tissue engineering, is an important component of some promising medical devices, e.g., biodegradable stents. The hydrolytic degradation of polydioxanone stents plays a key role in the safety and efficacy of treatment. A new fast and convenient method to quantitatively evaluate the hydrolytic degradation of PPDX stent material was developed. PPDX esophageal stents were degraded in phosphate-buffered saline for 24 weeks. For the first time, the changes in Raman spectra during PPDX biodegradation have been investigated here. The level of PPDX hydrolytic degradation was determined from the Raman spectra by calculating the area under the 1732 cm-1 peak shoulder. Raman spectroscopy, unlike Fourier transform infrared (FT-IR) spectroscopy, is also sensitive enough to monitor the decrease in the dye content in the stents during the degradation. Observation by a scanning electron microscope showed gradually growing cracks, eventually leading to the stent disintegration. The material crystallinity was increasing during the first 16 weeks, suggesting preferential degradation of the amorphous phase. Our results show a new easy and reliable way to evaluate the progression of PPDX hydrolytic degradation. The proposed approach can be useful for further studies on the behavior of PPDX materials, and for clinical practice.
Collapse
Affiliation(s)
- Jan Loskot
- Department of Physics, University of Hradec Králové, Rokitanského 62, 500 03 Hradec Králové, Czech Republic; (J.L.); (D.J.); (D.M.)
| | - Daniel Jezbera
- Department of Physics, University of Hradec Králové, Rokitanského 62, 500 03 Hradec Králové, Czech Republic; (J.L.); (D.J.); (D.M.)
| | - Aleš Bezrouk
- Department of Medical Biophysics, Faculty of Medicine in Hradec Králové, Charles University, 500 03 Hradec Králové, Czech Republic
- Correspondence:
| | - Rafael Doležal
- Department of Chemistry, University of Hradec Králové, Rokitanského 62, 500 03 Hradec Králové, Czech Republic; (R.D.); (R.A.)
| | - Rudolf Andrýs
- Department of Chemistry, University of Hradec Králové, Rokitanského 62, 500 03 Hradec Králové, Czech Republic; (R.D.); (R.A.)
| | - Vendula Francová
- ELLA-CS, s.r.o., Milady Horákové 504/45, 500 06 Hradec Králové, Czech Republic;
| | - Dominik Miškář
- Department of Physics, University of Hradec Králové, Rokitanského 62, 500 03 Hradec Králové, Czech Republic; (J.L.); (D.J.); (D.M.)
| | - Alena Myslivcová Fučíková
- Department of Biology, University of Hradec Králové, Rokitanského 62, 500 03 Hradec Králové, Czech Republic;
| |
Collapse
|
6
|
Zięba M, Włodarczyk J, Gupta A, Pastusiak M, Chaber P, Janeczek H, Musioł M, Sikorska W, Kaczmarczyk B, Radecka I, Kowalczuk M, Savickas A, Savickiene N, Adamus G. Bioresorbable electrospun mats of poly(D, L)-lactide/poly[(R, S)-3-hydroxybutyrate] blends for potential use in the treatment of difficult-to-heal skin wounds. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110334] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
|
7
|
Pańczyszyn E, Jaśko M, Miłek O, Niedziela M, Męcik-Kronenberg T, Hoang-Bujnowicz A, Zięba M, Adamus G, Kowalczuk M, Osyczka AM, Tylko G. Gellan gum hydrogels cross-linked with carbodiimide stimulates vacuolation of human tooth-derived stem cells in vitro. Toxicol In Vitro 2021; 73:105111. [PMID: 33588021 DOI: 10.1016/j.tiv.2021.105111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 01/18/2021] [Accepted: 02/11/2021] [Indexed: 10/22/2022]
Abstract
The natural polysaccharides are promising compounds for applications in regenerative medicine. Gellan gum (GG) is the bacteria-derived polysaccharide widely used in food industry. Simple modifications of its chemical properties make GG superior for the development of biocompatible hydrogels. Beside reversible cationic integration of GG chains, more efficient binding is accomplished with 1-ethyl-3-[3-(dimethylamino)propyl]carbodiimide (EDC). However, the side-products of polymer cross-linking might affect viability and differentiation of stem cells introduced into the hydrogels. We found that O-acylisourea (EDU) stimulates autophagy-based vacuolation in both periodontal ligament and dental pulp stem cells. 24-h treatment of cells with GG extracts cross-linked with 15 mM EDC developed large cytoplasmic vacuoles. Freshly prepared EDU (2-6 mM) but not 15 mM EDC solutions initiated vacuole development with concomitant reduction of cell viability/metabolism. Most of the vacuoles stained with acridine orange displayed highly acidic environment further confirmed by flow cytometric analysis. Western blot of the LC3 autophagy marker followed by a transmission electron microscopy indicated the process is autophagy-dependent. We propose that the high reactivity of EDU with intracellular components initiates autophagy, although the targets of EDU remain unknown. Nevertheless, a burst release of EDU from GG hydrogels might modulate negatively cellular processes and final effectiveness of tissue regeneration.
Collapse
Affiliation(s)
- Elżbieta Pańczyszyn
- Department of Cell Biology and Imaging, Institute of Zoology and Biomedical Research, Faculty of Biology, Jagiellonian University, Gronostajowa 9, 30-387 Kraków, Poland.
| | - Marta Jaśko
- Department of Cell Biology and Imaging, Institute of Zoology and Biomedical Research, Faculty of Biology, Jagiellonian University, Gronostajowa 9, 30-387 Kraków, Poland.
| | - Oliwia Miłek
- Department of Cell Biology and Imaging, Institute of Zoology and Biomedical Research, Faculty of Biology, Jagiellonian University, Gronostajowa 9, 30-387 Kraków, Poland.
| | - Matylda Niedziela
- Department of Cell Biology and Imaging, Institute of Zoology and Biomedical Research, Faculty of Biology, Jagiellonian University, Gronostajowa 9, 30-387 Kraków, Poland
| | - Tomasz Męcik-Kronenberg
- Department of Pathomorphology, Faculty of Medical Sciences, Medical University of Silesia, 3 Maja 13, 41-800 Zabrze, Poland.
| | - Agnieszka Hoang-Bujnowicz
- Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Kraków, Poland.
| | - Magdalena Zięba
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, Curie-Skłodowskiej 34, 41-819 Zabrze, Poland.
| | - Grażyna Adamus
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, Curie-Skłodowskiej 34, 41-819 Zabrze, Poland.
| | - Marek Kowalczuk
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, Curie-Skłodowskiej 34, 41-819 Zabrze, Poland.
| | - Anna M Osyczka
- Department of Cell Biology and Imaging, Institute of Zoology and Biomedical Research, Faculty of Biology, Jagiellonian University, Gronostajowa 9, 30-387 Kraków, Poland.
| | - Grzegorz Tylko
- Department of Cell Biology and Imaging, Institute of Zoology and Biomedical Research, Faculty of Biology, Jagiellonian University, Gronostajowa 9, 30-387 Kraków, Poland.
| |
Collapse
|
8
|
Sikorska W, Zięba M, Musioł M, Kowalczuk M, Janeczek H, Chaber P, Masiuchok O, Demchenko V, Talanyuk V, Iurzhenko M, Puskas J, Adamus G. Forensic Engineering of Advanced Polymeric Materials-Part VII: Degradation of Biopolymer Welded Joints. Polymers (Basel) 2020; 12:E1167. [PMID: 32438761 PMCID: PMC7284890 DOI: 10.3390/polym12051167] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 05/07/2020] [Accepted: 05/13/2020] [Indexed: 11/16/2022] Open
Abstract
Welding technology may be considered as a promising processing method for the formation of packaging products from biopolymers. However, the welding processes used can change the properties of the polymer materials, especially in the region of the weld. In this contribution, the impact of the welding process on the structure and properties of biopolymer welds and their ability to undergo hydrolytic degradation will be discussed. Samples for the study were made from polylactide (PLA) and poly(3-hydroxyalkanoate) (PHA) biopolymers which were welded using two methods: ultrasonic and heated tool welding. Differential scanning calorimetry (DSC) analysis showed slight changes in the thermal properties of the samples resulting from the processing and welding method used. The results of hydrolytic degradation indicated that welds of selected biopolymers started to degrade faster than unwelded parts of the samples. The structure of degradation products at the molecular level was confirmed using mass spectrometry. It was found that hydrolysis of the PLA and PHA welds occurs via the random ester bond cleavage and leads to the formation of PLA and PHA oligomers terminated by hydroxyl and carboxyl end groups, similarly to as previously observed for unwelded PLA and PHA-based materials.
Collapse
Affiliation(s)
- W. Sikorska
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. C. Skłodowska St., 41-800 Zabrze, Poland; (W.S.); (M.Z.); (M.M.); (M.K.); (H.J.); (P.C.)
- International Polish-Ukrainian Research Laboratory ADPOLCOM, Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. C. Skłodowska St., 41-800 Zabrze, Poland
| | - M. Zięba
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. C. Skłodowska St., 41-800 Zabrze, Poland; (W.S.); (M.Z.); (M.M.); (M.K.); (H.J.); (P.C.)
- International Polish-Ukrainian Research Laboratory ADPOLCOM, Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. C. Skłodowska St., 41-800 Zabrze, Poland
| | - M. Musioł
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. C. Skłodowska St., 41-800 Zabrze, Poland; (W.S.); (M.Z.); (M.M.); (M.K.); (H.J.); (P.C.)
| | - M. Kowalczuk
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. C. Skłodowska St., 41-800 Zabrze, Poland; (W.S.); (M.Z.); (M.M.); (M.K.); (H.J.); (P.C.)
- International Polish-Ukrainian Research Laboratory ADPOLCOM, Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. C. Skłodowska St., 41-800 Zabrze, Poland
| | - H. Janeczek
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. C. Skłodowska St., 41-800 Zabrze, Poland; (W.S.); (M.Z.); (M.M.); (M.K.); (H.J.); (P.C.)
| | - P. Chaber
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. C. Skłodowska St., 41-800 Zabrze, Poland; (W.S.); (M.Z.); (M.M.); (M.K.); (H.J.); (P.C.)
- International Polish-Ukrainian Research Laboratory ADPOLCOM, Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. C. Skłodowska St., 41-800 Zabrze, Poland
| | - O. Masiuchok
- E.O. Paton Electric Welding Institute of the National Academy of Sciences of Ukraine, 11. Kazymyr Malevych Str., 03680 Kyiv, Ukraine; (O.M.); (V.D.); (V.T.); (M.I.)
- International Polish-Ukrainian Research Laboratory ADPOLCOM, E.O. Paton Electric Welding Institute of the National Academy of Sciences of Ukraine, 11. Kazymyr Malevych Str., 03680 Kyiv, Ukraine
| | - V. Demchenko
- E.O. Paton Electric Welding Institute of the National Academy of Sciences of Ukraine, 11. Kazymyr Malevych Str., 03680 Kyiv, Ukraine; (O.M.); (V.D.); (V.T.); (M.I.)
- International Polish-Ukrainian Research Laboratory ADPOLCOM, E.O. Paton Electric Welding Institute of the National Academy of Sciences of Ukraine, 11. Kazymyr Malevych Str., 03680 Kyiv, Ukraine
| | - V. Talanyuk
- E.O. Paton Electric Welding Institute of the National Academy of Sciences of Ukraine, 11. Kazymyr Malevych Str., 03680 Kyiv, Ukraine; (O.M.); (V.D.); (V.T.); (M.I.)
| | - M. Iurzhenko
- E.O. Paton Electric Welding Institute of the National Academy of Sciences of Ukraine, 11. Kazymyr Malevych Str., 03680 Kyiv, Ukraine; (O.M.); (V.D.); (V.T.); (M.I.)
- International Polish-Ukrainian Research Laboratory ADPOLCOM, E.O. Paton Electric Welding Institute of the National Academy of Sciences of Ukraine, 11. Kazymyr Malevych Str., 03680 Kyiv, Ukraine
| | - J.E. Puskas
- Department of Food, Agricultural and Biological Engineering, The Ohio State University, 1680 Madison Avenue, Wooster, OH 44325, USA;
| | - G. Adamus
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. C. Skłodowska St., 41-800 Zabrze, Poland; (W.S.); (M.Z.); (M.M.); (M.K.); (H.J.); (P.C.)
- International Polish-Ukrainian Research Laboratory ADPOLCOM, Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. C. Skłodowska St., 41-800 Zabrze, Poland
| |
Collapse
|
9
|
Li L, Wang Q, Lyu R, Yu L, Su S, Du FS, Li ZC. Synthesis of a ROS-responsive analogue of poly(ε-caprolactone) by the living ring-opening polymerization of 1,4-oxathiepan-7-one. Polym Chem 2018. [DOI: 10.1039/c8py00798e] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A well-defined ROS-responsive block amphiphilic diblock copolymer PEO-b-POTO was synthesized to elucidate the oxidative degradation mechanism in assemblies.
Collapse
Affiliation(s)
- Linggao Li
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- Key Laboratory of Polymer Chemistry & Physics of Ministry of Education
- Department of Polymer Science & Engineering
- College of Chemistry and Molecular Engineering
- Center for Soft Matter Science & Engineering
| | - Qiyuan Wang
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- Key Laboratory of Polymer Chemistry & Physics of Ministry of Education
- Department of Polymer Science & Engineering
- College of Chemistry and Molecular Engineering
- Center for Soft Matter Science & Engineering
| | - Ruiliang Lyu
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- Key Laboratory of Polymer Chemistry & Physics of Ministry of Education
- Department of Polymer Science & Engineering
- College of Chemistry and Molecular Engineering
- Center for Soft Matter Science & Engineering
| | - Li Yu
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- Key Laboratory of Polymer Chemistry & Physics of Ministry of Education
- Department of Polymer Science & Engineering
- College of Chemistry and Molecular Engineering
- Center for Soft Matter Science & Engineering
| | - Shan Su
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- Key Laboratory of Polymer Chemistry & Physics of Ministry of Education
- Department of Polymer Science & Engineering
- College of Chemistry and Molecular Engineering
- Center for Soft Matter Science & Engineering
| | - Fu-Sheng Du
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- Key Laboratory of Polymer Chemistry & Physics of Ministry of Education
- Department of Polymer Science & Engineering
- College of Chemistry and Molecular Engineering
- Center for Soft Matter Science & Engineering
| | - Zi-Chen Li
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- Key Laboratory of Polymer Chemistry & Physics of Ministry of Education
- Department of Polymer Science & Engineering
- College of Chemistry and Molecular Engineering
- Center for Soft Matter Science & Engineering
| |
Collapse
|
10
|
Li J, Nemes P, Guo J. Mapping intermediate degradation products of poly(lactic‐
co
‐glycolic acid)
in vitro. J Biomed Mater Res B Appl Biomater 2017; 106:1129-1137. [DOI: 10.1002/jbm.b.33920] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Revised: 03/31/2017] [Accepted: 04/22/2017] [Indexed: 01/25/2023]
Affiliation(s)
- Jian Li
- Division of BiologyChemistry and Materials Science, Office of Science and Engineering Laboratories, Center for Devices and Radiological Health, Office of Medical Products and Tobacco, U.S. Food and Drug AdministrationSilver Spring Maryland20993
| | - Peter Nemes
- Division of BiologyChemistry and Materials Science, Office of Science and Engineering Laboratories, Center for Devices and Radiological Health, Office of Medical Products and Tobacco, U.S. Food and Drug AdministrationSilver Spring Maryland20993
| | - Ji Guo
- Division of BiologyChemistry and Materials Science, Office of Science and Engineering Laboratories, Center for Devices and Radiological Health, Office of Medical Products and Tobacco, U.S. Food and Drug AdministrationSilver Spring Maryland20993
| |
Collapse
|
11
|
Song Q, Xia Y, Hu S, Zhao J, Zhang G. Tuning the crystallinity and degradability of PCL by organocatalytic copolymerization with δ-hexalactone. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.09.026] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
12
|
Arias V, Olsén P, Odelius K, Höglund A, Albertsson AC. Forecasting linear aliphatic copolyester degradation through modular block design. Polym Degrad Stab 2016. [DOI: 10.1016/j.polymdegradstab.2016.05.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|
13
|
Li XY, Zhou Q, Wen ZB, Hui Y, Yang KK, Wang YZ. The influence of coexisted monomer on thermal, mechanical, and hydrolytic properties of poly( p-dioxanone). J Appl Polym Sci 2016. [DOI: 10.1002/app.43483] [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)
- Xiao-Yang Li
- Center for Degradable and Flame-Retardant Polymeric Materials, College of Chemistry, State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan); Sichuan University; Chengdu 610064 China
| | - Qian Zhou
- Center for Degradable and Flame-Retardant Polymeric Materials, College of Chemistry, State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan); Sichuan University; Chengdu 610064 China
| | - Zhi-Bin Wen
- Center for Degradable and Flame-Retardant Polymeric Materials, College of Chemistry, State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan); Sichuan University; Chengdu 610064 China
| | - Yan Hui
- Center for Degradable and Flame-Retardant Polymeric Materials, College of Chemistry, State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan); Sichuan University; Chengdu 610064 China
| | - Ke-Ke Yang
- Center for Degradable and Flame-Retardant Polymeric Materials, College of Chemistry, State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan); Sichuan University; Chengdu 610064 China
| | - Yu-Zhong Wang
- Center for Degradable and Flame-Retardant Polymeric Materials, College of Chemistry, State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan); Sichuan University; Chengdu 610064 China
| |
Collapse
|
14
|
Choi UH, Mittal A, Price TL, Colby RH, Gibson HW. Imidazolium-Based Ionic Liquids as Initiators in Ring Opening Polymerization: Ionic Conduction and Dielectric Response of End-Functional Polycaprolactones and Their Block Copolymers. MACROMOL CHEM PHYS 2016. [DOI: 10.1002/macp.201500424] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- U Hyeok Choi
- Department of Materials Science and Engineering; Pennsylvania State University; University Park PA 16802 USA
- Functional Composites Department; Korea Institute of Materials Science; Changwon 642-831 Korea
| | - Anuj Mittal
- Department of Chemistry; Macromolecules and Interfaces Institute; Virginia Tech; Blacksburg VA 24061 USA
- Momentive Performance Materials Pvt. Ltd.; Bangalore Karnataka 560100 India
| | - Terry L. Price
- Department of Chemistry; Macromolecules and Interfaces Institute; Virginia Tech; Blacksburg VA 24061 USA
| | - Ralph H. Colby
- Department of Materials Science and Engineering; Pennsylvania State University; University Park PA 16802 USA
| | - Harry W. Gibson
- Department of Chemistry; Macromolecules and Interfaces Institute; Virginia Tech; Blacksburg VA 24061 USA
| |
Collapse
|
15
|
Xu H, Yang X, Xie L, Hakkarainen M. Conformational Footprint in Hydrolysis-Induced Nanofibrillation and Crystallization of Poly(lactic acid). Biomacromolecules 2016; 17:985-95. [DOI: 10.1021/acs.biomac.5b01636] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Huan Xu
- Department
of Fibre and Polymer Technology, KTH Royal Institute of Technology, Stockholm 100 44, Sweden
- College
of Polymer Science and Engineering, State Key Laboratory of Polymer
Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Xi Yang
- Department
of Fibre and Polymer Technology, KTH Royal Institute of Technology, Stockholm 100 44, Sweden
| | - Lan Xie
- College
of Polymer Science and Engineering, State Key Laboratory of Polymer
Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Minna Hakkarainen
- Department
of Fibre and Polymer Technology, KTH Royal Institute of Technology, Stockholm 100 44, Sweden
| |
Collapse
|
16
|
Maksymiak M, Bałakier T, Jurczak J, Kowalczuk M, Adamus G. Bioactive (co)oligoesters with antioxidant properties – synthesis and structural characterization at the molecular level. RSC Adv 2016. [DOI: 10.1039/c6ra09870c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Anionic ring opening (co)polymerization of novel β-substituted β-lactones to bioactive (co)oligoesters with antioxidant properties.
Collapse
Affiliation(s)
- Magdalena Maksymiak
- Polish Academy of Sciences
- Centre of Polymer and Carbon Materials
- 41-819 Zabrze
- Poland
| | - Tomasz Bałakier
- Institute of Organic Chemistry
- Polish Academy of Sciences
- 01-224 Warsaw
- Poland
| | - Janusz Jurczak
- Institute of Organic Chemistry
- Polish Academy of Sciences
- 01-224 Warsaw
- Poland
| | - Marek Kowalczuk
- Polish Academy of Sciences
- Centre of Polymer and Carbon Materials
- 41-819 Zabrze
- Poland
- School of Biology
| | - Grazyna Adamus
- Polish Academy of Sciences
- Centre of Polymer and Carbon Materials
- 41-819 Zabrze
- Poland
| |
Collapse
|
17
|
Kowalczuk M, Adamus G. Mass spectrometry for the elucidation of the subtle molecular structure of biodegradable polymers and their degradation products. MASS SPECTROMETRY REVIEWS 2016; 35:188-198. [PMID: 25869251 DOI: 10.1002/mas.21474] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Indexed: 06/04/2023]
Abstract
Contemporary reports by Polish authors on the application of mass spectrometric methods for the elucidation of the subtle molecular structure of biodegradable polymers and their degradation products will be presented. Special emphasis will be given to natural aliphatic (co)polyesters (PHA) and their synthetic analogues, formed through anionic ring-opening polymerization (ROP) of β-substituted β-lactones. Moreover, the application of MS techniques for the evaluation of the structure of biodegradable polymers obtained in ionic and coordination polymerization of cyclic ethers and esters as well as products of step-growth polymerization, in which bifunctional or multifunctional monomers react to form oligomers and eventually long chain polymers, will be discussed. Furthermore, the application of modern MS techniques for the assessment of polymer degradation products, frequently bearing characteristic end groups that can be revealed and differentiated by MS, will be discussed within the context of specific degradation pathways. Finally, recent Polish accomplishments in the area of mass spectrometry will be outlined.
Collapse
Affiliation(s)
- Marek Kowalczuk
- Polish Academy of Sciences, Centre of Polymer and Carbon Materials, 34. M. Curie-Skłodowska St., Zabrze, 41-800, Poland
- School of Biology, Chemistry and Forensic Science, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton, WV1 1SB, UK
| | - Grażyna Adamus
- Polish Academy of Sciences, Centre of Polymer and Carbon Materials, 34. M. Curie-Skłodowska St., Zabrze, 41-800, Poland
| |
Collapse
|
18
|
MacDonald JP, Shaver MP. An aromatic/aliphatic polyester prepared via ring-opening polymerisation and its remarkably selective and cyclable depolymerisation to monomer. Polym Chem 2016. [DOI: 10.1039/c5py01606a] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The ring-opening polymerisation of 2,3-dihydro-5H-1,4-benzodioxepin-5-one gives polyester homopolymers and copolymers that contain both aromatic and aliphatic linkages. The polymers can be easily depolymerised by Al catalysts.
Collapse
|
19
|
Hassanzadeh S, Khoee S, Beheshti A, Hakkarainen M. Release of quercetin from micellar nanoparticles with saturated and unsaturated core forming polyesters — A combined computational and experimental study. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 46:417-26. [DOI: 10.1016/j.msec.2014.10.059] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Revised: 09/16/2014] [Accepted: 10/21/2014] [Indexed: 11/26/2022]
|
20
|
Sikorska W, Adamus G, Dobrzynski P, Libera M, Rychter P, Krucinska I, Komisarczyk A, Cristea M, Kowalczuk M. Forensic engineering of advanced polymeric materials – Part II: The effect of the solvent-free non-woven fabrics formation method on the release rate of lactic and glycolic acids from the tin-free poly(lactide-co-glycolide) nonwovens. Polym Degrad Stab 2014. [DOI: 10.1016/j.polymdegradstab.2014.09.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
21
|
Adjustable degradation properties and biocompatibility of amorphous and functional poly(ester-acrylate)-based materials. Biomacromolecules 2014; 15:2800-7. [PMID: 24915542 DOI: 10.1021/bm500689g] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Tuning the properties of materials toward a special application is crucial in the area of tissue engineering. The design of materials with predetermined degradation rates and controlled release of degradation products is therefore vital. Providing a material with various functional groups is one of the best ways to address this issue because alterations and modifications of the polymer backbone can be performed easily. Two different 2-methylene-1,3-dioxepane/glycidyl methacrylate-based (MDO/GMA) copolymers were synthesized with different feed ratios and immersed into a phosphate buffer solution at pH 7.4 and in deionized water at 37 °C for up to 133 days. After different time intervals, the molecular weight changes, mass loss, pH, and degradation products were determined. By increasing the amount of GMA functional groups in the material, the degradation rate and the amount of acidic degradation products released from the material were decreased. As a result, the composition of the copolymers greatly affected the degradation rate. A rapid release of acidic degradation products during the degradation process could be an important issue for biomedical applications because it might affect the biocompatibility of the material. The cytotoxicity of the materials was evaluated using a MTT assay. These tests indicated that none of the materials demonstrated any obvious cytotoxicity, and the materials could therefore be considered biocompatible.
Collapse
|
22
|
Rizzarelli P, Carroccio S. Modern mass spectrometry in the characterization and degradation of biodegradable polymers. Anal Chim Acta 2014; 808:18-43. [DOI: 10.1016/j.aca.2013.11.001] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Revised: 10/18/2013] [Accepted: 11/04/2013] [Indexed: 01/06/2023]
|
23
|
Köhler J, Marquardt F, Teske M, Keul H, Sternberg K, Möller M. Enhanced hydrolytic degradation of heterografted polyglycidols: phosphonoethylated monoester and polycaprolactone grafts. Biomacromolecules 2013; 14:3985-96. [PMID: 24088140 DOI: 10.1021/bm401428b] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Novel biodegradable materials with tunable hydrolytic degradation rate are prepared by grafting of phosphonoethylated polyglycidols with polyesters. First, the hydrolytically degradable polyester grafts are attached to polyglycidols partially grafted with phosphonoethylated diethyl esters through chemical-catalyzed grafting using tin(II) octanoate, then the diethyl ester groups are chemoselectively converted to the corresponding monoester (mixed phosphonate/phosphonic acid) using alkali metal halides. The products are characterized by means of (1)H, (13)C, and (31)P NMR spectroscopy, as well as size-exclusion chromatography and differential scanning calorimetry. The in vitro degradation of the copolymers is studied in phosphate buffered solution at 55 °C. The copolymers are of the same architecture, molecular weight, and crystallinity, only differing in the pendant phosphonate and mixed phosphonate/phosphonic acid groups, respectively. On the basis of mass loss, decrease of the molecular weight, and morphological analysis of the copolymers, the strong impact of mixed phosphonate/phosphonic acid groups on the hydrolytic degradation rate is demonstrated.
Collapse
Affiliation(s)
- Jens Köhler
- Institute of Technical and Macromolecular Chemistry, RWTH Aachen University and Interactive Materials Research - DWI at RWTH Aachen e.V. , Forckenbeckstr. 50, D-52056 Aachen, Germany
| | | | | | | | | | | |
Collapse
|
24
|
Rydz J, Wolna-Stypka K, Musioł M, Szeluga U, Janeczek H, Kowalczuk M. Further evidence of polylactide degradation in paraffin and in selected protic media. A thermal analysis of eroded polylactide films. Polym Degrad Stab 2013. [DOI: 10.1016/j.polymdegradstab.2013.05.005] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
25
|
Aminlashgari N, Höglund OV, Borg N, Hakkarainen M. Degradation profile and preliminary clinical testing of a resorbable device for ligation of blood vessels. Acta Biomater 2013; 9:6898-904. [PMID: 23438863 DOI: 10.1016/j.actbio.2013.02.018] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Revised: 01/11/2013] [Accepted: 02/05/2013] [Indexed: 11/18/2022]
Abstract
A resorbable device for ligation of blood vessels was developed and tested in vitro to reveal the degradation profile of the device and to predict the clinical performance in terms of adequate mechanical support during a healing period of 1week. In addition, preliminary clinical testing was performed that showed complete hemostasis and good tissue grip of renal arteries in five pigs. The device was made by injection molding of poly(glycolide-co-trimethylene carbonate) triblock copolymer, and it consisted of a case with a locking mechanism connected to a partly perforated flexible band. A hydrolytic degradation study was carried out for 7, 30 and 60days in water and buffer medium, following the changes in mass, water absorption, pH and mechanical properties. A new rapid matrix-free laser desorption ionization-mass spectrometry (LDI-MS) method was developed for direct screening of degradation products released into the degradation medium. The combination of LDI-MS and electrospray ionization-mass spectrometry analyses enabled the comparison of the degradation product patterns in water and buffer medium. The identified degradation products were rich in trimethylene carbonate units, indicating preferential hydrolysis of amorphous regions where trimethylene units are located. The crystallinity of the material was doubled after 60days of hydrolysis, additionally confirming the preferential hydrolysis of trimethylene carbonate units and the enrichment of glycolide units in the remaining solid matrix. The mechanical performance of the perforated band was followed for the first week of hydrolysis and the results suggest that sufficient strength is retained during the healing time of the blood vessels.
Collapse
Affiliation(s)
- Nina Aminlashgari
- Department of Fibre and Polymer Technology, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden
| | | | | | | |
Collapse
|
26
|
Maksymiak M, Debowska R, Jelonek K, Kowalczuk M, Adamus G. Structural characterization of biocompatible lipoic acid-oligo-(3-hydroxybutyrate) conjugates by electrospray ionization mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2013; 27:773-783. [PMID: 23495024 DOI: 10.1002/rcm.6509] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2012] [Revised: 01/09/2013] [Accepted: 01/13/2013] [Indexed: 06/01/2023]
Abstract
RATIONALE Currently, most of the antioxidants and free radical neutralizers used in cosmetic compositions are absorbed quickly into deeper layers of skin, and then carried away by the blood stream. It would be beneficial to delay the penetration of antioxidants to the deeper layers of skin to control their delivery and release. METHODS Recently, growing attention has been paid to the attachment of cosmetics to specific polymer carriers. Biodegradable and biocompatible conjugates of oligo-3-hydroxybutyrate with lipoic acid were obtained via the anionic ring-opening oligomerization of (R,S)-β-butyrolactone initiated by lipoic acid potassium salt. The structure of the resulting conjugates as well as their water-soluble hydrolytic degradation products were established at the molecular level by electrospray ionization mass spectrometry (ESI-MS(n)) supported by (1)H NMR analyses. RESULTS The structural studies, performed with the aid of ESI-MS(n), confirmed that the lipoic acid was covalently bound to oligo-3-hydroxybutyrate chains through hydrolyzable ester bonds. Furthermore, hydrolytic degradation studies of the bioconjugates provided detailed insight into the hydrolysis process, allowing the identification of the degradation products and confirming the release of α-lipoic acid. Cytotoxicity tests demonstrated that the conjugates were non-toxic. CONCLUSIONS Detailed molecular structural studies of new polymeric delivery systems of lipoic acid were performed by ESI-MS. ESI-MS proved to be an excellent technique for the evaluation of hydrolytic degradation products of the conjugates and for monitoring the release of lipoic acid. The results obtained contribute significantly to the characterization of biocompatible LA-OHB conjugates with potential applications in cosmetology.
Collapse
Affiliation(s)
- Magdalena Maksymiak
- Polish Academy of Sciences, Centre of Polymer and Carbon Materials, 34 M. Curie-Sklodowskiej St., 41-819, Zabrze, Poland
| | | | | | | | | |
Collapse
|
27
|
Alin J, Hakkarainen M. Combined chromatographic and mass spectrometric toolbox for fingerprinting migration from PET tray during microwave heating. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:1405-15. [PMID: 23343184 DOI: 10.1021/jf3047847] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A combined chromatographic and mass spectrometric toolbox was utilized to determine the interactions between poly(ethylene terephthalate) (PET) food packaging and different food simulants during microwave heating. Overall and specific migration was determined by combining weight loss measurements with gas chromatography-mass spectrometry (GC-MS) and electrospray ionization mass spectrometry (ESI-MS). This allowed mapping of low molecular weight migrants in the molecular range up to 2000 g/mol. Microwave heating caused significantly faster migration of cyclic oligomers into ethanol and isooctane as compared to migration during conventional heating at the same temperature. This effect was more significant at lower temperature at which diffusion rates are generally lower. It was also shown that transesterification took place between PET and ethanol during microwave heating, leading to formation of diethyl terephthalate. The detected migrants included cyclic oligomers from dimer to hexamer, in most cases containing extra ethylene glycol units, and oxidized Irgafos 168. ESI-MS combined with CID MS-MS was an excellent tool for structural interpretation of the nonvolatile compounds migrating to the food simulants. The overall migration was below the overall migration limit of 10 mg/dm(2) set by the European commission after 4 h of microwave heating at 100 °C in all studied food simulants.
Collapse
Affiliation(s)
- Jonas Alin
- Department of Fibre and Polymer Technology, School of Chemical Science and Engineering, Royal Institute of Technology (KTH), SE-100 44 Stockholm, Sweden
| | | |
Collapse
|
28
|
Soeriyadi AH, R.Whittaker M, Boyer C, Davis TP. Soft ionization mass spectroscopy: Insights into the polymerization mechanism. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/pola.26536] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
29
|
|
30
|
Barqawi H, Ostas E, Liu B, Carpentier JF, Binder WH. Multidimensional Characterization of α,ω-Telechelic Poly(ε-caprolactone)s via Online Coupling of 2D Chromatographic Methods (LC/SEC) and ESI-TOF/MALDI-TOF-MS. Macromolecules 2012. [DOI: 10.1021/ma3016739] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Haitham Barqawi
- Faculty of Natural Sciences
II (Chemistry, Physics, Mathematics), Institute of Chemistry, Chair
of Macromolecular Chemistry, Martin-Luther University Halle-Wittenberg, D-06120 Halle (Saale), Germany
| | - Elena Ostas
- Faculty of Natural Sciences
II (Chemistry, Physics, Mathematics), Institute of Chemistry, Chair
of Macromolecular Chemistry, Martin-Luther University Halle-Wittenberg, D-06120 Halle (Saale), Germany
| | - Bo Liu
- Institut des Sciences Chimiques
de Rennes, Organometallics: Materials and Catalysis, UMR 6226 CNRS-Université de Rennes 1, F-35042,
Rennes Cedex, France
| | - Jean-François Carpentier
- Institut des Sciences Chimiques
de Rennes, Organometallics: Materials and Catalysis, UMR 6226 CNRS-Université de Rennes 1, F-35042,
Rennes Cedex, France
| | - Wolfgang H. Binder
- Faculty of Natural Sciences
II (Chemistry, Physics, Mathematics), Institute of Chemistry, Chair
of Macromolecular Chemistry, Martin-Luther University Halle-Wittenberg, D-06120 Halle (Saale), Germany
| |
Collapse
|
31
|
Aminlashgari N, Hakkarainen M. Surface assisted laser desorption ionization-mass spectrometry (SALDI-MS) for analysis of polyester degradation products. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2012; 23:1071-1076. [PMID: 22392621 DOI: 10.1007/s13361-012-0360-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2011] [Revised: 02/03/2012] [Accepted: 02/06/2012] [Indexed: 05/31/2023]
Abstract
Novel surface assisted laser desorption ionization-mass spectrometry (SALDI-MS) method was developed for rapid analysis of low molecular mass polyesters and their degradation products by laser desorption ionization-mass spectrometry. Three polycaprolactone materials were analyzed by the developed method before and after hydrolytic degradation. The signal-to-noise values obtained by SALDI-MS were 20-100 times higher compared with the ones obtained by using traditional MALDI-MS matrices. A clean background at low mass range and higher resolution was obtained by SALDI-MS. Different nanoparticle, cationizing agent, and solvent combinations were evaluated. Halloysite nanoclay and magnesium hydroxide showed the best potential as SALDI surfaces. The SALDI-MS spectrum of the polyester hydrolysis products was verified by ESI-MS. The developed SALDI-MS method possesses several advantages over existing methods for similar analyses.
Collapse
Affiliation(s)
- Nina Aminlashgari
- Department of Fibre and Polymer Technology, School of Chemical Science and Engineering, KTH Royal Institute of Technology, Stockholm, Sweden
| | | |
Collapse
|
32
|
Regnell Andersson S, Hakkarainen M, Inkinen S, Södergård A, Albertsson AC. Customizing the Hydrolytic Degradation Rate of Stereocomplex PLA through Different PDLA Architectures. Biomacromolecules 2012; 13:1212-22. [DOI: 10.1021/bm300196h] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Sofia Regnell Andersson
- Department of Fibre and Polymer
Technology, School of Chemical Science and Engineering, Royal Institute of Technology (KTH), S-100 44 Stockholm,
Sweden
| | - Minna Hakkarainen
- Department of Fibre and Polymer
Technology, School of Chemical Science and Engineering, Royal Institute of Technology (KTH), S-100 44 Stockholm,
Sweden
| | - Saara Inkinen
- Laboratory of Polymer
Technology,
Center for Functional Materials (FUNMAT), Åbo Akademi University, Piispankatu 8, 20100 Turku, Finland
| | - Anders Södergård
- Laboratory of Polymer
Technology,
Center for Functional Materials (FUNMAT), Åbo Akademi University, Piispankatu 8, 20100 Turku, Finland
| | - Ann-Christine Albertsson
- Department of Fibre and Polymer
Technology, School of Chemical Science and Engineering, Royal Institute of Technology (KTH), S-100 44 Stockholm,
Sweden
| |
Collapse
|
33
|
Kotek J, Kubies D, Baldrian J, Kovářová J. Biodegradable polyester nanocomposites: The effect of structure on mechanical and degradation behavior. Eur Polym J 2011. [DOI: 10.1016/j.eurpolymj.2011.09.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
34
|
Assessing the Degradation Profile of Functional Aliphatic Polyesters with Precise Control of the Degradation Products. Macromol Biosci 2011; 12:260-8. [DOI: 10.1002/mabi.201100288] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2011] [Revised: 09/07/2011] [Indexed: 11/07/2022]
|
35
|
Dånmark S, Finne-Wistrand A, Schander K, Hakkarainen M, Arvidson K, Mustafa K, Albertsson AC. In vitro and in vivo degradation profile of aliphatic polyesters subjected to electron beam sterilization. Acta Biomater 2011; 7:2035-46. [PMID: 21316490 DOI: 10.1016/j.actbio.2011.02.011] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2010] [Revised: 01/13/2011] [Accepted: 02/07/2011] [Indexed: 11/29/2022]
Abstract
Degradation characteristics in response to electron beam sterilization of designed and biodegradable aliphatic polyester scaffolds are relevant for clinically successful synthetic graft tissue regeneration. Scaffold degradation in vitro and in vivo were documented and correlated to the macroscopic structure and chemical design of the original polymer. The materials tested were of inherently diverse hydrophobicity and crystallinity: poly(L-lactide) (poly(LLA)) and random copolymers from L-lactide and ε-caprolactone or 1,5-dioxepan-2-one, fabricated into porous and non-porous scaffolds. After sterilization, the samples underwent hydrolysis in vitro for up to a year. In vivo, scaffolds were surgically implanted into rat calvarial defects and retrieved for analysis after 28 and 91days. In vitro, poly(L-lactide-co-1,5-dioxepan-2-one) (poly(LLA-co-DXO)) samples degraded most rapidly during hydrolysis, due to the pronounced chain-shortening reaction caused by the sterilization. This was indicated by the rapid decrease in both mass and molecular weight of poly(LLA-co-DXO). Poly(L-lactide-co-ε-caprolactone) (poly(LLA-co-CL)) samples were also strongly affected by sterilization, but mass loss was more gradual; molecular weight decreased rapidly during hydrolysis. Least affected by sterilization were the poly(LLA) samples, which subsequently showed low mass loss rate and molecular weight decrease during hydrolysis. Mechanical stability varied greatly: poly(LLA-co-CL) withstood mechanical testing for up to 182 days, while poly(LLA) and poly(LLA-co-DXO) samples quickly became too brittle. Poly(LLA-co-DXO) samples unexpectedly degraded more rapidly in vitro than in vivo. After sterilization by electron beam irradiation, the three biodegradable polymers present widely diverse degradation profiles, both in vitro and in vivo. Each exhibits the potential to be tailored to meet diverse clinical tissue engineering requirements.
Collapse
Affiliation(s)
- S Dånmark
- Centre for Clinical Dental Research, Department of Clinical Dentistry, Faculty of Medicine and Dentistry, University of Bergen, Norway
| | | | | | | | | | | | | |
Collapse
|
36
|
Aminlashgari N, Hakkarainen M. Emerging Mass Spectrometric Tools for Analysis of Polymers and Polymer Additives. MASS SPECTROMETRY OF POLYMERS – NEW TECHNIQUES 2011. [DOI: 10.1007/12_2011_152] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
37
|
Andersson SR, Hakkarainen M, Albertsson AC. Tuning the Polylactide Hydrolysis Rate by Plasticizer Architecture and Hydrophilicity without Introducing New Migrants. Biomacromolecules 2010; 11:3617-23. [DOI: 10.1021/bm101075p] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Sofia Regnell Andersson
- Department of Fibre and Polymer Technology, School of Chemical Science and Engineering, Royal Institute of Technology (KTH), S-100 44, Stockholm, Sweden
| | - Minna Hakkarainen
- Department of Fibre and Polymer Technology, School of Chemical Science and Engineering, Royal Institute of Technology (KTH), S-100 44, Stockholm, Sweden
| | - Ann-Christine Albertsson
- Department of Fibre and Polymer Technology, School of Chemical Science and Engineering, Royal Institute of Technology (KTH), S-100 44, Stockholm, Sweden
| |
Collapse
|
38
|
Idris SB, Dånmark S, Finne-Wistrand A, Arvidson K, Albertsson AC, Bolstad AI, Mustafa K. Biocompatibility of Polyester Scaffolds with Fibroblasts and Osteoblast-like Cells for Bone Tissue Engineering. J BIOACT COMPAT POL 2010. [DOI: 10.1177/0883911510381368] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The aim of this study was to evaluate the in vitro cytotoxicity and cytocompatibility of the developed aliphatic polyester co-polymer scaffolds: poly(L-lactide-co-ε-caprolactone) and poly(L-lactide-co-1,5-dioxepan-2-one). The scaffolds were produced by solvent casting and particulate leaching, and tested by direct and indirect contact cytotoxicity assays on human osteoblast-like cells and mouse fibroblasts. Cell morphology was documented by light and scanning electron microscopy. Viability was assessed by the MTT, neutral red uptake, lactic dehydrogenase and apoptosis assays. Extraction tests confirmed that the scaffolds did not have a cytotoxic effect on the cells. The cells grew and spread well on the test scaffolds with good cellular attachment and viability. The scaffolds are noncytotoxic and biocompatible with the two cell types and warrant continued investigation as potential constructs for bone tissue engineering.
Collapse
Affiliation(s)
- Shaza B. Idris
- Department of Clinical Dentistry -Center for Clinical Dental Research Faculty of Medicine and Dentistry, University of Bergen N-5009 Bergen, Norway,
| | - Staffan Dånmark
- Department of Clinical Dentistry - Center for Clinical Dental Research Faculty of Medicine and Dentistry, University of Bergen N-5009 Bergen, Norway, Fibre and Polymer Technology, Royal Institute of Technology 100 44 Stockholm, Sweden
| | - Anna Finne-Wistrand
- Fibre and Polymer Technology, Royal Institute of Technology 100 44 Stockholm, Sweden
| | - Kristina Arvidson
- Department of Clinical Dentistry - Center for Clinical Dental Research Faculty of Medicine and Dentistry, University of Bergen N-5009 Bergen, Norway
| | | | - Anne Isine Bolstad
- Department of Clinical Dentistry -Periodontics University of Bergen, N-5009 Bergen, Norway
| | - Kamal Mustafa
- Department of Clinical Dentistry - Center for Clinical Dental Research Faculty of Medicine and Dentistry, University of Bergen N-5009 Bergen, Norway
| |
Collapse
|
39
|
Affiliation(s)
- Steffen M. Weidner
- Federal Institute for Materials Research and Testing (BAM), D-12489 Berlin, Richard-Willstaetter-Strasse 11, Germany, and Department of Chemistry, Wayne State University, 5101 Cass Avenue, 33 Chemistry, Detroit, Michigan 48202
| | - Sarah Trimpin
- Federal Institute for Materials Research and Testing (BAM), D-12489 Berlin, Richard-Willstaetter-Strasse 11, Germany, and Department of Chemistry, Wayne State University, 5101 Cass Avenue, 33 Chemistry, Detroit, Michigan 48202
| |
Collapse
|
40
|
Guo B, Finne-Wistrand A, Albertsson AC. Enhanced Electrical Conductivity by Macromolecular Architecture: Hyperbranched Electroactive and Degradable Block Copolymers Based on Poly(ε-caprolactone) and Aniline Pentamer. Macromolecules 2010. [DOI: 10.1021/ma100530k] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Baolin Guo
- Department of Fibre and Polymer Technology, School of Chemical Science and Engineering, Royal Institute of Technology, SE-100 44, Stockholm, Sweden
| | - Anna Finne-Wistrand
- Department of Fibre and Polymer Technology, School of Chemical Science and Engineering, Royal Institute of Technology, SE-100 44, Stockholm, Sweden
| | - Ann-Christine Albertsson
- Department of Fibre and Polymer Technology, School of Chemical Science and Engineering, Royal Institute of Technology, SE-100 44, Stockholm, Sweden
| |
Collapse
|
41
|
Bennet F, Hart-Smith G, Gruendling T, Davis TP, Barker PJ, Barner-Kowollik C. Degradation of Poly(methyl methacrylate) Model Compounds Under Extreme Environmental Conditions. MACROMOL CHEM PHYS 2010. [DOI: 10.1002/macp.200900625] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
42
|
Rychter P, Kawalec M, Sobota M, Kurcok P, Kowalczuk M. Study of Aliphatic-Aromatic Copolyester Degradation in Sandy Soil and Its Ecotoxicological Impact. Biomacromolecules 2010; 11:839-47. [DOI: 10.1021/bm901331t] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Piotr Rychter
- Polish Academy of Sciences, Centre of Polymer and Carbon Materials, 34, M. Curie-Skłodowska Street, 41-819 Zabrze, Poland, and Jan Długosz University, Institute of Chemistry, Environment Protection and Biotechnology, 13/15 Armii Krajowej Avenue, 42-200 Czȩstochowa, Poland
| | - Michał Kawalec
- Polish Academy of Sciences, Centre of Polymer and Carbon Materials, 34, M. Curie-Skłodowska Street, 41-819 Zabrze, Poland, and Jan Długosz University, Institute of Chemistry, Environment Protection and Biotechnology, 13/15 Armii Krajowej Avenue, 42-200 Czȩstochowa, Poland
| | - Michał Sobota
- Polish Academy of Sciences, Centre of Polymer and Carbon Materials, 34, M. Curie-Skłodowska Street, 41-819 Zabrze, Poland, and Jan Długosz University, Institute of Chemistry, Environment Protection and Biotechnology, 13/15 Armii Krajowej Avenue, 42-200 Czȩstochowa, Poland
| | - Piotr Kurcok
- Polish Academy of Sciences, Centre of Polymer and Carbon Materials, 34, M. Curie-Skłodowska Street, 41-819 Zabrze, Poland, and Jan Długosz University, Institute of Chemistry, Environment Protection and Biotechnology, 13/15 Armii Krajowej Avenue, 42-200 Czȩstochowa, Poland
| | - Marek Kowalczuk
- Polish Academy of Sciences, Centre of Polymer and Carbon Materials, 34, M. Curie-Skłodowska Street, 41-819 Zabrze, Poland, and Jan Długosz University, Institute of Chemistry, Environment Protection and Biotechnology, 13/15 Armii Krajowej Avenue, 42-200 Czȩstochowa, Poland
| |
Collapse
|
43
|
Höglund A, Hakkarainen M, Edlund U, Albertsson AC. Surface modification changes the degradation process and degradation product pattern of polylactide. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:378-383. [PMID: 20038176 DOI: 10.1021/la902166j] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The effect of surface modification on the degradation process and degradation product patterns of degradable polymers is still a basically unexplored area even though a significant effect can be expected. Polylactide (PLA) and PLA grafted with acrylic acid (PLA-AA) were, thus, subjected to hydrolytic degradation, and water-soluble degradation products were determined by electrospray ionization-mass spectrometry (ESI-MS) after different time periods. Low molar mass compounds migrated from surface-grafted PLA already during the first 7 days at 37 degrees C, while it took 133 days in the case of nongrafted PLA before any low molar mass compounds were detected in the aging water. In addition, the degradation product pattern of surface-grafted PLA showed significant variation as a function of hydrolysis time with the evolution of short and long AA-grafted lactic acid oligomers as well as plain lactic acid oligomers after different time periods. The degradation product pattern of plain PLA consisted of lactic acid and its oligomers with up to 13 lactic acid units. Surface grafting, thus, changed the degradation product patterns and accelerated the formation of water-soluble degradation products.
Collapse
Affiliation(s)
- Anders Höglund
- Department of Fibre and Polymer Technology, School of Chemical Science and Engineering, Royal Institute of Technology (KTH), S-100 44, Stockholm, Sweden
| | | | | | | |
Collapse
|
44
|
Gruendling T, Weidner S, Falkenhagen J, Barner-Kowollik C. Mass spectrometry in polymer chemistry: a state-of-the-art up-date. Polym Chem 2010. [DOI: 10.1039/b9py00347a] [Citation(s) in RCA: 194] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
45
|
Neffe AT, Tronci G, Alteheld A, Lendlein A. Controlled Change of Mechanical Properties during Hydrolytic Degradation of Polyester Urethane Networks. MACROMOL CHEM PHYS 2009. [DOI: 10.1002/macp.200900441] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
46
|
Höglund A, Hakkarainen M, Albertsson AC. Migration and Hydrolysis of Hydrophobic Polylactide Plasticizer. Biomacromolecules 2009; 11:277-83. [DOI: 10.1021/bm901157h] [Citation(s) in RCA: 93] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Anders Höglund
- Department of Fibre and Polymer Technology, School of Chemical Science and Engineering, Royal Institute of Technology, S-100 44, Stockholm, Sweden
| | - Minna Hakkarainen
- Department of Fibre and Polymer Technology, School of Chemical Science and Engineering, Royal Institute of Technology, S-100 44, Stockholm, Sweden
| | - Ann-Christine Albertsson
- Department of Fibre and Polymer Technology, School of Chemical Science and Engineering, Royal Institute of Technology, S-100 44, Stockholm, Sweden
| |
Collapse
|
47
|
Dai S, Xue L, Zinn M, Li Z. Enzyme-Catalyzed Polycondensation of Polyester Macrodiols with Divinyl Adipate: A Green Method for the Preparation of Thermoplastic Block Copolyesters. Biomacromolecules 2009; 10:3176-81. [DOI: 10.1021/bm9011634] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shiyao Dai
- Department of Chemical & Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117576, and Laboratory of Biomaterials, EMPA, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Liang Xue
- Department of Chemical & Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117576, and Laboratory of Biomaterials, EMPA, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Manfred Zinn
- Department of Chemical & Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117576, and Laboratory of Biomaterials, EMPA, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Zhi Li
- Department of Chemical & Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117576, and Laboratory of Biomaterials, EMPA, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| |
Collapse
|
48
|
Adamus G. Molecular Level Structure of (R,S)-3-Hydroxybutyrate/(R,S)-3-Hydroxy-4-ethoxybutyrate Copolyesters with Dissimilar Architecture. Macromolecules 2009. [DOI: 10.1021/ma900349u] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Grazyna Adamus
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. Curie-Sklodowskiej St., 41-819 Zabrze, Poland
| |
Collapse
|
49
|
Adamus G, Hakkarainen M, Höglund A, Kowalczuk M, Albertsson AC. MALDI-TOF MS Reveals the Molecular Level Structures of Different Hydrophilic−Hydrophobic Polyether-esters. Biomacromolecules 2009; 10:1540-6. [DOI: 10.1021/bm9001415] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Grazyna Adamus
- Department of Fibre and Polymer Technology, School of Chemical Science and Engineering, Royal Institute of Technology, 100 44 Stockholm, Sweden, and Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. Curie-Sklodowskiej St., 41-819 Zabrze, Poland
| | - Minna Hakkarainen
- Department of Fibre and Polymer Technology, School of Chemical Science and Engineering, Royal Institute of Technology, 100 44 Stockholm, Sweden, and Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. Curie-Sklodowskiej St., 41-819 Zabrze, Poland
| | - Anders Höglund
- Department of Fibre and Polymer Technology, School of Chemical Science and Engineering, Royal Institute of Technology, 100 44 Stockholm, Sweden, and Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. Curie-Sklodowskiej St., 41-819 Zabrze, Poland
| | - Marek Kowalczuk
- Department of Fibre and Polymer Technology, School of Chemical Science and Engineering, Royal Institute of Technology, 100 44 Stockholm, Sweden, and Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. Curie-Sklodowskiej St., 41-819 Zabrze, Poland
| | - Ann-Christine Albertsson
- Department of Fibre and Polymer Technology, School of Chemical Science and Engineering, Royal Institute of Technology, 100 44 Stockholm, Sweden, and Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. Curie-Sklodowskiej St., 41-819 Zabrze, Poland
| |
Collapse
|
50
|
Spontaneous crosslinking of poly(1,5‐dioxepan‐2‐one) originating from ether bond fragmentation. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/pola.23037] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|