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Savchenko V, Eckert S, Fondell M, Mitzner R, Vaz da Cruz V, Föhlisch A. Electronic structure, bonding and stability of fumarate, maleate, and succinate dianions from X-ray spectroscopy. Phys Chem Chem Phys 2024; 26:2304-2311. [PMID: 38165713 DOI: 10.1039/d3cp04348g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2024]
Abstract
The electronic structure of the fumarate, maleate, and succinate dianions in the context of their stability is determined in a joint experimental and computational study with X-ray absorption spectroscopy and resonant inelastic X-ray scattering at the O K-edge. The study reveals differences in the electronic states and molecular orbitals of the three molecules. In particular, maleate has a non-degenerate oxygen core-orbital with an energy difference of approximately 0.15 eV, visible in a two peak structure in XAS. Polarization-dependent RIXS provides information on the orientation of the occupied valence molecular orbitals with respect to the carboxylate group plane and shows a gradually increasing energy gap between the HOMO and excited π* LUMO from fumarate to maleate to succinate. We also demonstrate the energy excitation dependence of the RIXS spectra of maleate, with the total inelastic RIXS profile shifting towards higher energy loss as the detuning is increased from negative to positive values. Our findings show that maleate is less stable than fumarate and succinate due to the presence of electronic density on its HOMO orbital on the CC bond between carboxylate groups, which can lead to weaker bonding of maleate with molecules or ions.
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Affiliation(s)
- Viktoriia Savchenko
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Institute for Methods and Instrumentation for Synchrotron Radiation Research, 12489 Berlin, Germany.
| | - Sebastian Eckert
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Institute for Methods and Instrumentation for Synchrotron Radiation Research, 12489 Berlin, Germany.
| | - Mattis Fondell
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Institute for Methods and Instrumentation for Synchrotron Radiation Research, 12489 Berlin, Germany.
| | - Rolf Mitzner
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Institute for Methods and Instrumentation for Synchrotron Radiation Research, 12489 Berlin, Germany.
| | - Vincius Vaz da Cruz
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Institute for Methods and Instrumentation for Synchrotron Radiation Research, 12489 Berlin, Germany.
| | - Alexander Föhlisch
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Institute for Methods and Instrumentation for Synchrotron Radiation Research, 12489 Berlin, Germany.
- Institut für Physik und Astronomie, Universität Potsdam, 14476 Potsdam, Germany
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Shahdan D, Rosli NA, Chen RS, Ahmad S, Gan S. Strategies for strengthening toughened poly(lactic acid) blend via natural reinforcement with enhanced biodegradability: A review. Int J Biol Macromol 2023; 251:126214. [PMID: 37572810 DOI: 10.1016/j.ijbiomac.2023.126214] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 07/06/2023] [Accepted: 08/05/2023] [Indexed: 08/14/2023]
Abstract
The growing popularity of poly(lactic acid) (PLA) can be attributed to its favorable attributes, such as excellent compostability and robust mechanical properties. Two notable limitations of PLA are its high brittleness and slow biodegradation rate. Both of blending and copolymerization strategies work well to improve PLA's toughness while sacrificing the good tensile strength and modulus properties of PLA. One of the most effective and economical approaches to address this challenge is to incorporate natural reinforcing agents into the toughened PLA system, thereby simultaneously promoting the biodegradation rate of PLA. Nevertheless, the enhancement of tensile strength and modulus is accompanied by a notable decrease in elongation. Therefore, this review provides comprehensive information on the literature works related to the tensile strength, modulus, elongation at break and impact strength of the toughened PLA and its natural fiber reinforced composites. The impact of natural reinforcing agent on the tensile fracture mechanism as well as the synergistic effect on strengthening and toughening performance will be discussed. This review also focuses on the factors boosting the biodegradability of toughened PLA blend by using natural reinforcing fiber. Review presents potential future insights into the development of biodegradable and balanced strengthened-toughened PLA based advanced materials.
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Affiliation(s)
- Dalila Shahdan
- Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia (UKM), 43600 Bangi, Selangor, Malaysia
| | - Noor Afizah Rosli
- Department of Chemical Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia..
| | - Ruey Shan Chen
- Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia (UKM), 43600 Bangi, Selangor, Malaysia.
| | - Sahrim Ahmad
- Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia (UKM), 43600 Bangi, Selangor, Malaysia
| | - Sinyee Gan
- Malaysian Palm Oil Board, 6 Persiaran Institusi, Bandar Baru Bangi, 43000 Kajang, Selangor, Malaysia
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3
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Lima AL, Gross IP, de Sá-Barreto LL, Gratieri T, Gelfuso GM, Cunha-Filho M. Extrusion-based systems for topical and transdermal drug delivery. Expert Opin Drug Deliv 2023; 20:979-992. [PMID: 37522812 DOI: 10.1080/17425247.2023.2241362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 07/24/2023] [Indexed: 08/01/2023]
Abstract
INTRODUCTION Although the administration of drugs on the skin is a safe and noninvasive therapeutic alternative, producing formulations capable of disrupting the cutaneous barriers is still a challenge. In this scenario, extrusion-based techniques have emerged as disruptive technologies to ensure unique drug-excipient interactions that facilitate drug skin diffusion for systemic or local effect and even mean the key to obtain viable industrial products. AREAS COVERED This article presents a comprehensive overview of extrusion-based techniques in developing pharmaceutical dosage forms for topical or transdermal drug delivery. First, the theoretical basis of how extrusion-based techniques can optimize the permeation of drugs through the skin is examined. Then, the current state-of-the-art of drug products developed by extrusion-based techniques, specifically by hot-melt extrusion (HME) and fused deposition modeling (FDM) 3D printing, are discussed and contrasted with the current pharmaceutical processes. EXPERT OPINION A wide variety of pharmaceutical products can be obtained using HME and FDM 3D printing, including new dosage forms designed for a perfect anatomical fit. Despite the limitations of pharmaceutical products produced with HME and FDM 3D printing regarding thermal stability and available excipients, the advantages in industrial adaptability and improved bioavailability allied with patient-match devices certainly deserve full attention and investment.
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Affiliation(s)
- Ana Luiza Lima
- Laboratory of Food, Drugs, and Cosmetics (LTMAC), School of Health Sciences, University of Brasilia, Brasília, DF, Brazil
| | - Idejan P Gross
- Laboratory of Food, Drugs, and Cosmetics (LTMAC), School of Health Sciences, University of Brasilia, Brasília, DF, Brazil
| | - Lívia Lira de Sá-Barreto
- Laboratory of Food, Drugs, and Cosmetics (LTMAC), School of Health Sciences, University of Brasilia, Brasília, DF, Brazil
| | - Tais Gratieri
- Laboratory of Food, Drugs, and Cosmetics (LTMAC), School of Health Sciences, University of Brasilia, Brasília, DF, Brazil
| | - Guilherme Martins Gelfuso
- Laboratory of Food, Drugs, and Cosmetics (LTMAC), School of Health Sciences, University of Brasilia, Brasília, DF, Brazil
| | - Marcilio Cunha-Filho
- Laboratory of Food, Drugs, and Cosmetics (LTMAC), School of Health Sciences, University of Brasilia, Brasília, DF, Brazil
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4
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Litauszki K, Petrény R, Haramia Z, Mészáros L. Combined effects of plasticizers and D-lactide content on the mechanical and morphological behavior of polylactic acid. Heliyon 2023; 9:e14674. [PMID: 37035380 PMCID: PMC10073757 DOI: 10.1016/j.heliyon.2023.e14674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 03/10/2023] [Accepted: 03/14/2023] [Indexed: 03/29/2023] Open
Abstract
Nowadays, research into environmentally friendly, renewable materials is the focus of materials science. One of the best candidates for these purposes is polylactic acid (PLA), whose properties are determined mainly by its D-lactide content. PLA is often plasticized to achieve proper toughness. Our aim was to investigate the combined effects of plasticizers and D-lactide content on PLA. We investigated two different plasticizers: oligomeric lactide acid (OLA) and dioctyl adipate (DOA). An internal mixer was used to prepare the compounds, and then sheets were prepared by hot pressing. After mechanical and morphological analyses, we found that tensile strength and modulus of neat PLAs and PLA-OLA compounds decreased almost linearly with increasing D-lactide content. The mechanical properties of PLA-DOA compounds depended far less on D-lactide content than in the case of PLA-OLA compounds. Plasticizers promote the crystallization of crystallizable PLAs by their chain mobilizing effect-we obtained a higher crystalline fraction. The latter effect reduces the impact of the plasticizing effect of plasticizers in the product. The compatibility and dispersibility of plasticizers also have a significant effect on the properties of the materials. OLA is more compatible with PLA than DOA, which resulted in better plasticization, but caused more defects in the crystallites, thus reducing the crystalline melting temperature, and so the processing temperature of the compound containing plasticizers.
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Hyperbranched Polyester Polyfumaratomaleate Doped with Gd(III) and Dy(III) Ions: Synthesis, Structure and Properties. Polymers (Basel) 2022; 14:polym14235298. [PMID: 36501693 PMCID: PMC9739669 DOI: 10.3390/polym14235298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 11/28/2022] [Accepted: 12/01/2022] [Indexed: 12/12/2022] Open
Abstract
For the first time, metal-polymer complexes have been synthesized using hyperbranched polyester polyfumaratomaleate as a matrix, the structure of which has been established by 1H NMR, IR, electron spectroscopy, and elemental analysis methods. The formation of complexes with Gd(III) and Dy(III) ions involving fumarate and maleate groups of the polyester was proved by IR and electron spectroscopy methods. It was established that the structure of the coordination units has the form of a square antiprism. The compositions and conditional logarithms of the stability constants of the complexes were determined. It was established that complexation with lanthanide ions promotes emission enhancement in the ligand.
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Zhang Z, Jiang P, Wai PT, Feng S, Lu M, Zhang P, Leng Y, Pan L, Pan J. Construction and Synthesis of High-Stability Biobased Oligomeric Lactate Plasticizer: Applicable to PVC and PLA Polymers. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c02137] [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)
- Zheming Zhang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, P. R. China
| | - Pingping Jiang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, P. R. China
| | - Phyu Thin Wai
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, P. R. China
| | - Shan Feng
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, P. R. China
| | - Minjia Lu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, P. R. China
| | - Pingbo Zhang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, P. R. China
| | - Yan Leng
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, P. R. China
| | - Lingen Pan
- Wuxi Jiasheng High-Tech Modified Material Co., Ltd., Wuxi 214116, P. R. China
| | - Jie Pan
- Wuxi Jiasheng High-Tech Modified Material Co., Ltd., Wuxi 214116, P. R. China
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Hosseini SF, Kaveh F, Schmid M. Facile fabrication of transparent high-barrier poly(lactic acid)-based bilayer films with antioxidant/antimicrobial performances. Food Chem 2022; 384:132540. [PMID: 35231714 DOI: 10.1016/j.foodchem.2022.132540] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 02/18/2022] [Accepted: 02/21/2022] [Indexed: 11/04/2022]
Abstract
Poly(lactic acid) (PLA) has been intended as an encouraging biopolymer for packaging purposes. Nevertheless, PLA-based films suffer from low gas barrier properties, which restrict their applications. Here, we report a facile fabrication of multi-component coating via layer deposition of cinnamaldehyde (CIN)-doped chitosan/poly(vinyl alcohol)/fish gelatin (CPF) on PLA surfaces. Different PLA/CPF ratios (100:0, 77.5:22.5, 55:45, 32.5:67.5, and 0:100) were tested, whereas the PLA55:CPF45 was selected for loading of CIN. The surface and morphology analyses of the bilayers verify that CPF layers are successfully coated on the PLA surfaces. This design improved the mechanical strength and water barrier of CPF films and simultaneously enhanced the ductility of PLA films. By deposition of CIN-doped CPF layer on a PLA substrate, the oxygen permeability decreased from 28.92 to 0.238 cm3 mm/m2 day bar, approximately 122 times lower than that of bare PLA. CIN loadings in the CPF layer endowed bilayer films with antioxidant/antimicrobial activity.
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Affiliation(s)
- Seyed Fakhreddin Hosseini
- Department of Seafood Processing, Faculty of Marine Sciences, Tarbiat Modares University, P.O. Box 46414-356, Noor, Iran.
| | - Forouzan Kaveh
- Department of Food Science & Industries, Khazar Institute of Higher Education, P. O. 46315-389, Mazandaran, Mahmoodabad, Iran
| | - Markus Schmid
- Sustainable Packaging Institute SPI, Faculty of Life Sciences, Albstadt-Sigmaringen University, Anton-Günther-Str., 51, 72488 Sigmaringen, Germany
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8
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Tang S, Sun X, Qiao X, Cui W, Yu F, Zeng X, Covaci A, Chen D. Prenatal Exposure to Emerging Plasticizers and Synthetic Antioxidants and Their Potency to Cross Human Placenta. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:8507-8517. [PMID: 35674357 DOI: 10.1021/acs.est.2c01141] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Gestational exposure to environmental chemicals and subsequent permeation through the placental barrier represents potential health risks to both pregnant women and their fetuses. In the present study, we explored prenatal exposure to a suite of 46 emerging plasticizers and synthetic antioxidants (including five transformation products of 2,6-di-tert-butyl-4-hydroxytoluene, BHT) and their potency to cross human placenta based on a total of 109 maternal and cord serum pairs. Most of these chemicals have rarely or never been investigated for prenatal exposure and associated health risks. Eleven of them exhibited detection frequency greater than 50% in maternal blood, including dibutyl fumarate (DBF), 2,6-di-tert-butylphenol (2,4-DtBP), 1,3-diphenylguanidine (DPG), methyl-2-(benzoyl)benzoate (MBB), triethyl citrate (TEC), BHT, and its five metabolites, with a median concentration from 0.05 to 3.1 ng/mL. The transplacental transfer efficiency (TTE) was determined for selected chemicals with valid measurements in more than 10 maternal/cord blood pairs, and the mean TTEs exhibited a large variation (i.e., 0.29-2.14) between chemicals. The determined TTEs for some of the target chemicals were comparable to the predicted values by our previously proposed models developed from molecular descriptors, indicating that their transplacental transfer potency could be largely affected by physicochemical properties and molecular structures. However, additional biological and physiological factors may influence the potency of environmental chemicals to cross human placenta. Overall, our study findings raise concern on human exposure to an increasing list of plastic additives during critical life stages (e.g., pregnancy) and potential health risks.
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Affiliation(s)
- Shuqin Tang
- School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou 510632, China
| | - Xiangfei Sun
- School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou 510632, China
| | - Xinhang Qiao
- School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou 510632, China
| | - Wenxuan Cui
- School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou 510632, China
| | - Feixiang Yu
- School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou 510632, China
| | - Xiaowen Zeng
- Department of Environmental and Occupational Health, School of Public Health, Sun Yat-Sen University, 510080 Guangzhou, China
| | - Adrian Covaci
- Toxicological Center, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - Da Chen
- School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou 510632, China
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9
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Tisler S, Christensen JH. Non-target screening for the identification of migrating compounds from reusable plastic bottles into drinking water. JOURNAL OF HAZARDOUS MATERIALS 2022; 429:128331. [PMID: 35091188 DOI: 10.1016/j.jhazmat.2022.128331] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Revised: 01/19/2022] [Accepted: 01/20/2022] [Indexed: 05/25/2023]
Abstract
Reusable plastic sports bottles are used extensively worldwide, and little is known about the migration of chemicals from the bottles into drinking water. In this study, we investigated the chemical migration into drinking water stored for 24 h in new bottles, used bottles and bottles washed in the dishwasher. Non-target screening (NTS) by liquid-chromatography - high-resolution mass spectrometry (LC-HRMS) was performed to identify these compounds. We detected > 3500 dishwasher related compounds, with 430 showing migration even after subsequent flushing of the bottles. In addition, more than 400 plastic related compounds were detected, with high peaks for oligomers suspected to originate from the biodegradable polyester polycaprolactone, and aromatic amines, which may have been introduced as slip agents or antioxidants. These compounds have never been reported before in bottled water. Most of the identified compounds migrating out of the used bottles were plasticizers, antioxidants or photoinitiators. The presence of photoinitiators are of particular concern, due to possible endocrine disrupting effects. Furthermore, diethyltoluamide (DEET) was detected, which may have been formed from the plasticizer laurolactam. Typically, the dishwashing process enhanced the leaching of plastic related compounds, and even after additional water flushing, the average peak intensity of these compounds was only reduced by half.
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Affiliation(s)
- Selina Tisler
- Analytical Chemistry Group, Department of Plant and Environmental Science, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg, Denmark.
| | - Jan H Christensen
- Analytical Chemistry Group, Department of Plant and Environmental Science, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg, Denmark
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10
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Synthesis of esters derived from 2,5-furandicarboxylic acid and study of its plasticizing effects on poly(lactic acid). JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-02914-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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11
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Yao SS, Gao MZ, Feng ZY, Jin FL, Park SJ. Thermal and mechanical properties of poly(latic acid) reinforced with silanized basalt scales. KOREAN J CHEM ENG 2022. [DOI: 10.1007/s11814-021-1014-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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12
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Liu H, Chen R, Sun X, Li F, Shen H, Wang K, Wang Q, Li Y, Xie D, Chen J. Preparation and properties of
PBAT
/
PLA
composites modified by
PVA
and cellulose nanocrystals. J Appl Polym Sci 2022. [DOI: 10.1002/app.51474] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Hailu Liu
- Institute of Bioengineering Guangdong Academy of Sciences Guangzhou 510316 China
- Guangdong Biomaterials Engineering Technology Research Center Guangzhou 510316 China
| | - Ruilian Chen
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education of China, Guangdong Engineering Technology Research Center for High‐performance Organic and Polymer Photoelectric Functional Films School of Chemistry, Sun Yat‐sen University Guangzhou 510275 China
| | - Xiaoyan Sun
- Institute of Bioengineering Guangdong Academy of Sciences Guangzhou 510316 China
- Guangdong Biomaterials Engineering Technology Research Center Guangzhou 510316 China
| | - Fayong Li
- Institute of Bioengineering Guangdong Academy of Sciences Guangzhou 510316 China
- Guangdong Biomaterials Engineering Technology Research Center Guangzhou 510316 China
| | - Huayan Shen
- Institute of Bioengineering Guangdong Academy of Sciences Guangzhou 510316 China
- Guangdong Biomaterials Engineering Technology Research Center Guangzhou 510316 China
| | - Ke Wang
- Institute of Bioengineering Guangdong Academy of Sciences Guangzhou 510316 China
- Guangdong Biomaterials Engineering Technology Research Center Guangzhou 510316 China
| | - Qing Wang
- Institute of Bioengineering Guangdong Academy of Sciences Guangzhou 510316 China
- Guangdong Biomaterials Engineering Technology Research Center Guangzhou 510316 China
| | - Yuan Li
- Institute of Bioengineering Guangdong Academy of Sciences Guangzhou 510316 China
- Guangdong Biomaterials Engineering Technology Research Center Guangzhou 510316 China
| | - Dong Xie
- Institute of Bioengineering Guangdong Academy of Sciences Guangzhou 510316 China
- Guangdong Biomaterials Engineering Technology Research Center Guangzhou 510316 China
| | - Junjia Chen
- Institute of Bioengineering Guangdong Academy of Sciences Guangzhou 510316 China
- Guangdong Biomaterials Engineering Technology Research Center Guangzhou 510316 China
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Naser AZ, Deiab I, Defersha F, Yang S. Expanding Poly(lactic acid) (PLA) and Polyhydroxyalkanoates (PHAs) Applications: A Review on Modifications and Effects. Polymers (Basel) 2021; 13:4271. [PMID: 34883773 PMCID: PMC8659978 DOI: 10.3390/polym13234271] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 11/25/2021] [Accepted: 11/30/2021] [Indexed: 01/01/2023] Open
Abstract
The high price of petroleum, overconsumption of plastic products, recent climate change regulations, the lack of landfill spaces in addition to the ever-growing population are considered the driving forces for introducing sustainable biodegradable solutions for greener environment. Due to the harmful impact of petroleum waste plastics on human health, environment and ecosystems, societies have been moving towards the adoption of biodegradable natural based polymers whose conversion and consumption are environmentally friendly. Therefore, biodegradable biobased polymers such as poly(lactic acid) (PLA) and polyhydroxyalkanoates (PHAs) have gained a significant amount of attention in recent years. Nonetheless, some of the vital limitations to the broader use of these biopolymers are that they are less flexible and have less impact resistance when compared to petroleum-based plastics (e.g., polypropylene (PP), high-density polyethylene (HDPE) and polystyrene (PS)). Recent advances have shown that with appropriate modification methods-plasticizers and fillers, polymer blends and nanocomposites, such limitations of both polymers can be overcome. This work is meant to widen the applicability of both polymers by reviewing the available materials on these methods and their impacts with a focus on the mechanical properties. This literature investigation leads to the conclusion that both PLA and PHAs show strong candidacy in expanding their utilizations to potentially substitute petroleum-based plastics in various applications, including but not limited to, food, active packaging, surgical implants, dental, drug delivery, biomedical as well as antistatic and flame retardants applications.
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Affiliation(s)
| | | | | | - Sheng Yang
- School of Engineering, University of Guelph, Guelph, ON N1G 2W1, Canada; (A.Z.N.); (I.D.); (F.D.)
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14
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Gueche YA, Sanchez-Ballester NM, Bataille B, Aubert A, Rossi JC, Soulairol I. Investigating the Potential Plasticizing Effect of Di-Carboxylic Acids for the Manufacturing of Solid Oral Forms with Copovidone and Ibuprofen by Selective Laser Sintering. Polymers (Basel) 2021; 13:polym13193282. [PMID: 34641098 PMCID: PMC8513101 DOI: 10.3390/polym13193282] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 09/21/2021] [Accepted: 09/24/2021] [Indexed: 12/11/2022] Open
Abstract
In selective laser sintering (SLS), the heating temperature is a critical parameter for printability but can also be deleterious for the stability of active ingredients. This work aims to explore the plasticizing effect of di-carboxylic acids on reducing the optimal heating temperature (OHT) of polymer powder during SLS. First, mixtures of copovidone and di-carboxylic acids (succinic, fumaric, maleic, malic and tartaric acids) as well as formulations with two forms of ibuprofen (acid and sodium salt) were prepared to sinter solid oral forms (SOFs), and their respective OHT was determined. Plasticization was further studied by differential scanning calorimetry (DSC) and Fourier-transform infrared spectroscopy (FTIR). Following this, the printed SOFs were characterized (solid state, weight, hardness, disintegration time, drug content and release). It was found that all acids (except tartaric acid) reduced the OHT, with succinic acid being the most efficient. In the case of ibuprofen, only the acid form demonstrated a plasticizing effect. DSC and FTIR corroborated these observations showing a decrease in the glass transition temperature and the presence of interactions, respectively. Furthermore, the properties of the sintered SOFs were not affected by plasticization and the API was not degraded in all formulations. In conclusion, this study is a proof-of-concept that processability in SLS can improve with the use of di-carboxylic acids.
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Affiliation(s)
- Yanis Abdelhamid Gueche
- ICGM, University Montpellier, CNRS, ENSCM, 34000 Montpellier, France; (Y.A.G.); (N.M.S.-B.); (B.B.); (A.A.)
| | - Noelia M. Sanchez-Ballester
- ICGM, University Montpellier, CNRS, ENSCM, 34000 Montpellier, France; (Y.A.G.); (N.M.S.-B.); (B.B.); (A.A.)
- Department of Pharmacy, Nîmes University Hospital, 30900 Nimes, France
| | - Bernard Bataille
- ICGM, University Montpellier, CNRS, ENSCM, 34000 Montpellier, France; (Y.A.G.); (N.M.S.-B.); (B.B.); (A.A.)
| | - Adrien Aubert
- ICGM, University Montpellier, CNRS, ENSCM, 34000 Montpellier, France; (Y.A.G.); (N.M.S.-B.); (B.B.); (A.A.)
| | | | - Ian Soulairol
- ICGM, University Montpellier, CNRS, ENSCM, 34000 Montpellier, France; (Y.A.G.); (N.M.S.-B.); (B.B.); (A.A.)
- Department of Pharmacy, Nîmes University Hospital, 30900 Nimes, France
- Correspondence:
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15
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Xuan W, Odelius K, Hakkarainen M. Tunable polylactide plasticizer design: Rigid stereoisomers. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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16
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Moghaddam SM, Quelennec B, Delpouve N, Atawa B, Delbreilh L, Saiter–Fourcin A, Passaglia E, Fiori S. Fragility of short‐chain poly(lactic acid)s derivatives by combining dielectric spectroscopy and fast scanning calorimetry. JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20210129] [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]
Affiliation(s)
| | - Blandine Quelennec
- Groupe de Physique des Matériaux Normandie Univ, UNIROUEN Normandie, INSA Rouen, CNRS Rouen France
| | - Nicolas Delpouve
- Groupe de Physique des Matériaux Normandie Univ, UNIROUEN Normandie, INSA Rouen, CNRS Rouen France
| | - Bienvenu Atawa
- Groupe de Physique des Matériaux Normandie Univ, UNIROUEN Normandie, INSA Rouen, CNRS Rouen France
| | - Laurent Delbreilh
- Groupe de Physique des Matériaux Normandie Univ, UNIROUEN Normandie, INSA Rouen, CNRS Rouen France
| | - Allisson Saiter–Fourcin
- Groupe de Physique des Matériaux Normandie Univ, UNIROUEN Normandie, INSA Rouen, CNRS Rouen France
| | - Elisa Passaglia
- Institute for the Chemistry of OrganoMetallic Compounds (CNR‐ICCOM) SS Pisa Italian National Council for Research Pisa Italy
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Sánchez-Rodríguez C, Avilés MD, Pamies R, Carrión-Vilches FJ, Sanes J, Bermúdez MD. Extruded PLA Nanocomposites Modified by Graphene Oxide and Ionic Liquid. Polymers (Basel) 2021; 13:polym13040655. [PMID: 33671778 PMCID: PMC7926343 DOI: 10.3390/polym13040655] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 02/15/2021] [Accepted: 02/16/2021] [Indexed: 01/14/2023] Open
Abstract
Polylactic acid (PLA)-based nanocomposites were prepared by twin-screw extrusion. Graphene oxide (GO) and an ionic liquid (IL) were used as additives separately and simultaneously. The characterization of the samples was carried out by means of Fourier transform infrared (FT-IR) and Raman spectroscopies, thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). The viscoelastic behavior was determined using dynamic mechanical analysis (DMA) and rheological measurements. IL acted as internal lubricant increasing the mobility of PLA chains in the solid and rubbery states; however, the effect was less dominant when the composites were melted. When GO and IL were included, the viscosity of the nanocomposites at high temperatures presented a quasi-Newtonian behavior and, therefore, the processability of PLA was highly improved.
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Zhou M, Yang J, Li Y. A model for phthalic acid esters' biodegradability and biotoxicity multi-effect pharmacophore and its application in molecular modification. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2021; 56:361-378. [PMID: 33563085 DOI: 10.1080/10934529.2021.1881352] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 12/31/2020] [Accepted: 01/13/2021] [Indexed: 06/12/2023]
Abstract
The objective of this study was to investigate 13 phthalic acid esters (PAEs) with medium or long straight-alkyl-chain, branching or unsaturated side chains, because their structural characteristics make them difficult to biodegrade or highly toxic. A biodegradability and biotoxicity multi-effect pharmacophore model was built using comprehensive evaluation method. The results suggested that introducing hydrophobic groups to the side chains of the PAEs could improve the molecules' biodegradability and biotoxicity effects simultaneously. Thus, 40 target PAE (HEHP, DNOP, DUP) derivatives were designed. Two environmentally friendly PAE derivatives (HEHP-Anthryl and HEHP-Naphthyl) were screened via the test of environmental friendliness and functionality. In addition, the biodegradation and biotoxicity of derivatives were found to have improved as a result of the change in van der Waals forces between molecules and their corresponding proteins. Moreover, the environmental safety of the screened PAE derivatives was confirmed by predicting the toxicity of their intermediates and calculating the energy barrier values for biodegradation and metabolic pathways. This study could provide theoretical guidance for the practical development of environmentally friendly plasticizer.
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Affiliation(s)
- Mengying Zhou
- MOE Key Laboratory of Resources and Environmental Systems Optimization, North China Electric Power University, Beijing, China
- College of Environmental Science and Engineering, North China Electric Power University, Beijing, China
| | - Jiawen Yang
- MOE Key Laboratory of Resources and Environmental Systems Optimization, North China Electric Power University, Beijing, China
- College of Environmental Science and Engineering, North China Electric Power University, Beijing, China
| | - Yu Li
- MOE Key Laboratory of Resources and Environmental Systems Optimization, North China Electric Power University, Beijing, China
- College of Environmental Science and Engineering, North China Electric Power University, Beijing, China
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