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Little A, Ma S, Haddleton DM, Tan B, Sun Z, Wan C. Synthesis and Characterization of High Glycolic Acid Content Poly(glycolic acid- co-butylene adipate- co-butylene terephthalate) and Poly(glycolic acid- co-butylene succinate) Copolymers with Improved Elasticity. ACS OMEGA 2023; 8:38658-38667. [PMID: 37867663 PMCID: PMC10586444 DOI: 10.1021/acsomega.3c05932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 09/20/2023] [Indexed: 10/24/2023]
Abstract
Poly(glycolic acid) (PGA) is a biodegradable polymer with high gas barrier properties, mechanical strength, and heat deflection temperature. However, PGA's brittleness severely limits its application in packaging, creating a need to develop PGA-based copolymers with improved elasticity that maintain its barrier properties and hydrolytic degradability. In this work, a series of PGBAT (poly(glycolic acid-co-butylene) adipate-co-butylene terephthalate) copolymers containing 21-92% glycolic acid (nGA) with Mw values of 46,700-50,600 g mol-1 were synthesized via melt polycondensation, and the effects of altering the nGA on PGBAT's thermomechanical properties and hydrolysis rate were investigated. Poly(glycolic acid-co-butylene succinate) (PGBS) and poly(glycolic acid-co-butylene terephthalate) (PGBT) copolymers with high nGA were synthesized for comparison. DSC analysis revealed that PGBAT21 (nGA = 21%) and PGBAT92 were semicrystalline, melting between 102.8 and 163.3 °C, while PGBAT44, PGBAT86-89, PGBT80, and PGBS90 were amorphous, with Tg values from -19.0 to 23.7 °C. These high nGA copolymers showed similar rates of hydrolysis to PGA, whereas those containing <50% GA showed almost no mass loss over the testing period. Their mechanical properties were highly dependent upon their crystallinity and improved significantly after annealing. Of the high nGA copolymers, annealed PGBS90 (Mw 97,000 g mol-1) possessed excellent mechanical properties with a modulus of 588 MPa, tensile strength of 30.0 MPa, and elongation at break of 171%, a significant improvement on PGA's elongation at break of 3%. This work demonstrates the potential of enhancing PGA's flexibility by introducing minor amounts of low-cost diols and diacids into its synthesis.
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Affiliation(s)
- Alastair Little
- International
Institute for Nanocomposites Manufacturing (IINM), WMG, University of Warwick, Coventry CV4 7AL, U.K.
| | - Shiyue Ma
- International
Institute for Nanocomposites Manufacturing (IINM), WMG, University of Warwick, Coventry CV4 7AL, U.K.
| | | | - Bowen Tan
- PJIM
Polymer Scientific Co., Ltd., Shanghai 201102, China
| | - Zhaoyang Sun
- PJIM
Polymer Scientific Co., Ltd., Shanghai 201102, China
| | - Chaoying Wan
- International
Institute for Nanocomposites Manufacturing (IINM), WMG, University of Warwick, Coventry CV4 7AL, U.K.
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Kang M, Lee DM, Hyun I, Rubab N, Kim SH, Kim SW. Advances in Bioresorbable Triboelectric Nanogenerators. Chem Rev 2023; 123:11559-11618. [PMID: 37756249 PMCID: PMC10571046 DOI: 10.1021/acs.chemrev.3c00301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Indexed: 09/29/2023]
Abstract
With the growing demand for next-generation health care, the integration of electronic components into implantable medical devices (IMDs) has become a vital factor in achieving sophisticated healthcare functionalities such as electrophysiological monitoring and electroceuticals worldwide. However, these devices confront technological challenges concerning a noninvasive power supply and biosafe device removal. Addressing these challenges is crucial to ensure continuous operation and patient comfort and minimize the physical and economic burden on the patient and the healthcare system. This Review highlights the promising capabilities of bioresorbable triboelectric nanogenerators (B-TENGs) as temporary self-clearing power sources and self-powered IMDs. First, we present an overview of and progress in bioresorbable triboelectric energy harvesting devices, focusing on their working principles, materials development, and biodegradation mechanisms. Next, we examine the current state of on-demand transient implants and their biomedical applications. Finally, we address the current challenges and future perspectives of B-TENGs, aimed at expanding their technological scope and developing innovative solutions. This Review discusses advancements in materials science, chemistry, and microfabrication that can advance the scope of energy solutions available for IMDs. These innovations can potentially change the current health paradigm, contribute to enhanced longevity, and reshape the healthcare landscape soon.
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Affiliation(s)
- Minki Kang
- School
of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon 16419, Republic
of Korea
| | - Dong-Min Lee
- School
of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon 16419, Republic
of Korea
| | - Inah Hyun
- Department
of Materials Science and Engineering, Center for Human-oriented Triboelectric
Energy Harvesting, Yonsei University, Seoul 03722, Republic of Korea
| | - Najaf Rubab
- Department
of Materials Science and Engineering, Gachon
University, Seongnam 13120, Republic
of Korea
| | - So-Hee Kim
- Department
of Materials Science and Engineering, Center for Human-oriented Triboelectric
Energy Harvesting, Yonsei University, Seoul 03722, Republic of Korea
| | - Sang-Woo Kim
- Department
of Materials Science and Engineering, Center for Human-oriented Triboelectric
Energy Harvesting, Yonsei University, Seoul 03722, Republic of Korea
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Trofimchuk E, Ostrikova V, Ivanova O, Moskvina M, Plutalova A, Grokhovskaya T, Shchelushkina A, Efimov A, Chernikova E, Zhang S, Mironov V. Degradation of Structurally Modified Polylactide under the Controlled Composting of Food Waste. Polymers (Basel) 2023; 15:4017. [PMID: 37836066 PMCID: PMC10575269 DOI: 10.3390/polym15194017] [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: 09/06/2023] [Revised: 09/29/2023] [Accepted: 10/02/2023] [Indexed: 10/15/2023] Open
Abstract
The degradation of polylactide (PLA) films of different structures under conditions of controlled composting has been studied. We have demonstrated that PLA underwent degradation within one month in a substrate that simulated standard industrial composting. Regardless of the initial structure of the samples, the number-average molecular weight (Mn) decreased to 4 kDa while the degree of crystallinity increased to about 70% after 21 days of composting. Addition of an inoculant to the standard substrate resulted in the accelerated degradation of the PLA samples for one week due to an abiotic hydrolysis. These findings have confirmed that industrial composting could solve the problem of plastic disposal at least for PLA.
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Affiliation(s)
- Elena Trofimchuk
- Department of Chemistry, Moscow State University, Moscow 119991, Russia; (O.I.); (M.M.); (A.P.); (T.G.); (A.E.); (E.C.)
- Scientific Laboratory “Advanced Composite Materials and Technologies”, Plekhanov Russian University of Economics, Moscow 117997, Russia
| | - Valeria Ostrikova
- Winogradsky Institute of Microbiology, Federal Research Center of Biotechnology, Russian Academy of Sciences, Moscow 119071, Russia; (V.O.); (A.S.); (V.M.)
| | - Olga Ivanova
- Department of Chemistry, Moscow State University, Moscow 119991, Russia; (O.I.); (M.M.); (A.P.); (T.G.); (A.E.); (E.C.)
| | - Marina Moskvina
- Department of Chemistry, Moscow State University, Moscow 119991, Russia; (O.I.); (M.M.); (A.P.); (T.G.); (A.E.); (E.C.)
| | - Anna Plutalova
- Department of Chemistry, Moscow State University, Moscow 119991, Russia; (O.I.); (M.M.); (A.P.); (T.G.); (A.E.); (E.C.)
| | - Tatyana Grokhovskaya
- Department of Chemistry, Moscow State University, Moscow 119991, Russia; (O.I.); (M.M.); (A.P.); (T.G.); (A.E.); (E.C.)
| | - Anna Shchelushkina
- Winogradsky Institute of Microbiology, Federal Research Center of Biotechnology, Russian Academy of Sciences, Moscow 119071, Russia; (V.O.); (A.S.); (V.M.)
| | - Alexander Efimov
- Department of Chemistry, Moscow State University, Moscow 119991, Russia; (O.I.); (M.M.); (A.P.); (T.G.); (A.E.); (E.C.)
| | - Elena Chernikova
- Department of Chemistry, Moscow State University, Moscow 119991, Russia; (O.I.); (M.M.); (A.P.); (T.G.); (A.E.); (E.C.)
| | - Shenghua Zhang
- College of Harbour and Coastal Engineering, Jimei University, Xiamen 361021, China;
| | - Vladimir Mironov
- Winogradsky Institute of Microbiology, Federal Research Center of Biotechnology, Russian Academy of Sciences, Moscow 119071, Russia; (V.O.); (A.S.); (V.M.)
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Ciocîlteu MV, Scorei IR, Rău G, Nicolicescu C, Biţă A, Ene VL, Simionescu A, Turcu-Ştiolică A, Dinescu VC, Neamţu J, Mogoantă L, Mogoşanu GD. Zinc-Boron-PLGA biocomposite material: preparation, structural characterization, and in vitro assessment. ROMANIAN JOURNAL OF MORPHOLOGY AND EMBRYOLOGY = REVUE ROUMAINE DE MORPHOLOGIE ET EMBRYOLOGIE 2023; 64:567-577. [PMID: 38184838 PMCID: PMC10863689 DOI: 10.47162/rjme.64.4.14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 12/30/2023] [Indexed: 01/09/2024]
Abstract
Nowadays, the state-of-the-art discoveries in the field of delivery systems for therapeutic purposes have redefined the importance of biocompatible and biodegradable poly(lactic-co-glycolic acid (PLGA) nanocomposites. The study aimed to obtain a biocomposite material, with improved properties of its constituents [zinc-boron (Zn-B) complex and PLGA], by a simple, cost-effective method. The water∕oil∕water double emulsion technique allowed the adjustment of the synthesis parameters, to maximize the degree of Zn-B complex encapsulation. The morphological aspects of the samples were established by scanning electron microscopy (SEM). Particle size distribution was determined by dynamic light scattering (DLS). Morphology was typical for PLGA, spherical one. Depending on the synthesis conditions, the obtained particles have diameters between 10-450 nm. Zeta potential (ZP) showed that the particles have electronegative surface charge, offering a favorable perspective on aggregation, flocculation, and dispersion phenomena. It was observed, applying the design of experiments, that the particles size increased with increasing amounts of PLGA and polyvinyl alcohol (PVA), while ZP increased with higher PLGA and smaller PVA amounts in the formulation. The encapsulation efficiency was determined by ultra-high performance liquid chromatography∕mass spectrometry (UHPLC∕MS). The in vitro assessment was performed using Vero CCL-81 epithelial cell line and the 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) test. Zn-B-PLGA biocomposite has promising characteristics and can be used for future biomedical applications.
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Affiliation(s)
- Maria Viorica Ciocîlteu
- Department of Biochemistry, BioBoron Research Institute, S.C. Natural Research S.R.L., Podari, Dolj County, Romania
- Department of Analytical Chemistry, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, Romania
| | - Ion Romulus Scorei
- Department of Biochemistry, BioBoron Research Institute, S.C. Natural Research S.R.L., Podari, Dolj County, Romania
| | - Gabriela Rău
- Department of Biochemistry, BioBoron Research Institute, S.C. Natural Research S.R.L., Podari, Dolj County, Romania
- Department of Organic Chemistry, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, Romania
| | - Claudiu Nicolicescu
- Department of Engineering and Management of Technological Systems, Faculty of Mechanics, University of Craiova, Drobeta Turnu-Severin, Romania
| | - Andrei Biţă
- Department of Biochemistry, BioBoron Research Institute, S.C. Natural Research S.R.L., Podari, Dolj County, Romania
- Department of Pharmacognosy & Phytotherapy, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, Romania
| | - Vladimir Lucian Ene
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology Polytechnic Bucharest, Romania
| | - Andreea Simionescu
- Department of Chemistry, Faculty of Exact Sciences, University of Craiova, Romania
| | - Adina Turcu-Ştiolică
- Department of Pharmacoeconomics, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, Romania
| | - Venera Cristina Dinescu
- Department of Health Promotion and Occupational Medicine, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, Romania
| | - Johny Neamţu
- Department of Biochemistry, BioBoron Research Institute, S.C. Natural Research S.R.L., Podari, Dolj County, Romania
- Department of Physics, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, Romania
| | - Laurenţiu Mogoantă
- Research Center for Microscopic Morphology and Immunology, University of Medicine and Pharmacy of Craiova, Romania
- Romanian Academy of Medical Sciences, Craiova Subsidiary, Romania
| | - George Dan Mogoşanu
- Department of Biochemistry, BioBoron Research Institute, S.C. Natural Research S.R.L., Podari, Dolj County, Romania
- Department of Pharmacognosy & Phytotherapy, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, Romania
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Ciocîlteu MV, Gabriela R, Amzoiu MO, Amzoiu DC, Pisoschi CG, Poenariu BAM. PLGA-The Smart Biocompatible Polimer: Kinetic Degradation Studies and Active Principle Release. CURRENT HEALTH SCIENCES JOURNAL 2023; 49:416-422. [PMID: 38314224 PMCID: PMC10832882 DOI: 10.12865/chsj.49.03.15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Accepted: 07/12/2023] [Indexed: 02/06/2024]
Abstract
The aim of our research was the development of prolonged delivery systems for therapeutic agents with various properties (prevention and treatment of bone diseases, anti-neoplastic, anti-inflammatory, antioxidant) that would ensure sustained therapeutic levels of the active principle, above the minimum inhibitory concentration, without reaching toxic levels over a long period of time as alternatives to conventional routes of administration. PLGA (poly lactic-co-glycolic acid), a biodegradable and biocompatible synthetic polymer, FDA approved, with a 65:35 lactic acid (LA): glycolic acid (GA) copolymer ratio, was chosen as delivery system. Our studies have shown that in PBS it undergoes two simultaneous degradation processes, hydrolysis and autohydrolysis, degrading completely in about 40 days. The release of the active principle is determined by the diffusion from inside the polymer matrix to the outside, which occurs simultaneously with the erosion of the polymer, during 35 days.
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Affiliation(s)
- Maria-Viorica Ciocîlteu
- University of Medicine and Pharmacy of Craiova, Petru Rareș Street 2, 200349 Craiova, Romania
| | - Rău Gabriela
- University of Medicine and Pharmacy of Craiova, Petru Rareș Street 2, 200349 Craiova, Romania
| | - Manuel Ovidiu Amzoiu
- University of Medicine and Pharmacy of Craiova, Petru Rareș Street 2, 200349 Craiova, Romania
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Mironov VV, Trofimchuk ES, Zagustina NA, Ivanova OA, Vanteeva AV, Bochkova EA, Ostrikova VV, Zhang S. Solid-Phase Biodegradation of Polylactides (Review). APPL BIOCHEM MICRO+ 2022. [DOI: 10.1134/s0003683822060102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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