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Fal J, Bulanda K, Oleksy M, Żyła G. Effect of Bentonite on the Electrical Properties of a Polylactide-Based Nanocomposite. Polymers (Basel) 2024; 16:1372. [PMID: 38794565 PMCID: PMC11124944 DOI: 10.3390/polym16101372] [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: 04/10/2024] [Revised: 05/07/2024] [Accepted: 05/08/2024] [Indexed: 05/26/2024] Open
Abstract
In this paper, a novel polylactide-based nanocomposite with the addition of bentonite as a filler, Fusabond, and glycerine as a compatibilizer and plasticizer, were prepared and investigated. Four samples with different contents of bentonite (1, 5, 10, and 15 wt.%), as well as three samples without fillers, were prepared with an easily scalable method: melt blending. The electrical properties of all prepared samples were investigated with broadband dielectric spectroscopy in the frequency range between 0.1 Hz and 1 MHz. Measurements were conducted at nine temperatures between 293.15 and 333.15 K (20 to 60 °C) with steps of 5 K. It was found that the increase in the content of bentonite in polylactide has a significant effect on the electrical properties of the prepared nanocomposites.
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Affiliation(s)
- Jacek Fal
- Department of Physics and Medical Engineering, Faculty of Mathematics and Applied Physics, Rzeszów University of Technology, 35-959 Rzeszów, Poland;
| | - Katarzyna Bulanda
- Department of Polymer Composites, Faculty of Chemistry, Rzeszów University of Technology, 35-959 Rzeszów, Poland; (K.B.); (M.O.)
| | - Mariusz Oleksy
- Department of Polymer Composites, Faculty of Chemistry, Rzeszów University of Technology, 35-959 Rzeszów, Poland; (K.B.); (M.O.)
| | - Gaweł Żyła
- Department of Physics and Medical Engineering, Faculty of Mathematics and Applied Physics, Rzeszów University of Technology, 35-959 Rzeszów, Poland;
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Eltabey RM, Abdelwahed FT, Eldefrawy MM, Elnagar MM. Fabrication of poly(maleic acid)-grafted cross-linked chitosan/montmorillonite nanospheres for ultra-high adsorption of anionic acid yellow-17 and cationic brilliant green dyes in single and binary systems. JOURNAL OF HAZARDOUS MATERIALS 2022; 439:129589. [PMID: 35853338 DOI: 10.1016/j.jhazmat.2022.129589] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 07/08/2022] [Accepted: 07/10/2022] [Indexed: 06/15/2023]
Abstract
In this contribution, poly(maleic acid)-grafted cross-linked chitosan/montmorillonite composite nanospheres (PMAL-CTS/MMT) were synthesized via a facile approach for adsorption of organic dyes. The adsorption capacity of PMAL-CTS/MMT towards anionic acid yellow-17 (AY17) and cationic brilliant green (BG) was compared to PMAL-CTS, CTS/MMT, and MMT to emphasize the role of surface functional groups introduced by poly(maleic acid) and montmorillonite. Interestingly, the adsorption efficiency of PMAL-CTS/MMT nanocomposite towards both dyes in the single and binary systems was extremely high due to plenty of functional groups. The affinity of PMAL-CTS/MMT towards cationic and anionic dyes resulted from the feasible modulation of the surface charges as a function of the solution pH. The PMAL-CTS/MMT nanocomposite exhibited a maximum adsorption capacity of 518 and 1910 mg g-1 for AY17 and BG, respectively, which is higher than most of the adsorbents reported in recent literature studies. The proposed mechanism based on the characterization of PMAL-CTS/MMT after the adsorption highlighted that the adsorption is mainly controlled by electrostatic interaction, π - π interactions, and hydrogen bonding. More importantly, the PMAL-CTS/MMT nanocomposite was successfully applied to separate the AY17 and BG dyes from real-life aquatic environments. Collectively, the simple fabrication and superior adsorption performance reveal that PMAL-CTS/MMT has the potential to treat concomitant organic dyes effectively.
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Affiliation(s)
- Rania M Eltabey
- Department of Chemistry, Faculty of Science, Mansoura University, 35516 Mansoura, Egypt
| | - Fatma T Abdelwahed
- Department of Chemistry, Faculty of Science, Mansoura University, 35516 Mansoura, Egypt
| | - Mohamed M Eldefrawy
- Department of Chemistry, Faculty of Science, Mansoura University, 35516 Mansoura, Egypt
| | - Mohamed M Elnagar
- Institute of Electrochemistry, Ulm University, Albert-Einstein-Allee 47, 89081 Ulm, Germany; Inorganic Chemistry Department, National Research Centre, Tahrir Street, Dokki, 12622 Giza, Egypt.
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3
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Altıntıg E, Ates A, Angın D, Topal Z, Aydemir Z. Kinetic, equilibrium, adsorption mechanisms of RBBR and MG dyes on Chitosan-Coated Montmorillonite with an Ecofriendly Approach. Chem Eng Res Des 2022. [DOI: 10.1016/j.cherd.2022.09.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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4
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Fabris C, Perin D, Fredi G, Rigotti D, Bortolotti M, Pegoretti A, Xanthopoulou E, Bikiaris DN, Dorigato A. Improving the Wet-Spinning and Drawing Processes of Poly(lactide)/Poly(ethylene furanoate) and Polylactide/Poly(dodecamethylene furanoate) Fiber Blends. Polymers (Basel) 2022; 14:polym14142910. [PMID: 35890686 PMCID: PMC9322962 DOI: 10.3390/polym14142910] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 07/11/2022] [Accepted: 07/12/2022] [Indexed: 02/06/2023] Open
Abstract
This work aims to produce poly(lactic acid) (PLA)/poly(alkylene furanoate)s (PAF)s fiber blends for textile applications and evaluates their microstructural, chemical, thermal, and mechanical properties. The work focuses on two PAFs with very different alkyl chain lengths, i.e., poly(ethylene 2,5−furandicarboxylate) (PEF) and poly(dodecamethylene 2,5−furandicarboxylate) (PDoF), which were blended in solution at various concentrations (in the range 2.5–10 wt %) with PLA, wet spun, and subsequently drawn. Light optical micrographs highlight that PLA/PEF blends present large and concentrate PEF domains, whereas PLA/PDoF blends show small and homogeneously distributed PDoF domains. The blends appear to be immiscible, which is confirmed also by scanning electron microscopy (SEM), Fourier−Transform Infrared (FT−IR) spectroscopy, and differential scanning calorimetry (DSC). Thermogravimetric analysis (TGA) highlights that the addition of the PAFs improves the thermal stability of the fibers. The drawing process, which was carried out at 80 °C with a heat setting step at 95 °C and at three draw ratios, improves the mechanical properties of the fibers upon the addition of the PAFs. The results obtained in this study are promising and may serve as a basis for future investigations on these novel bio−based fiber blends, which can contribute to increase the environmental sustainability of industrial textiles.
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Affiliation(s)
- Claudia Fabris
- Department of Industrial Engineering and INSTM Research Unit, University of Trento, Via Sommarive 9, 38123 Trento, Italy; (C.F.); (D.R.); (M.B.); (A.P.); (A.D.)
| | - Davide Perin
- Department of Industrial Engineering and INSTM Research Unit, University of Trento, Via Sommarive 9, 38123 Trento, Italy; (C.F.); (D.R.); (M.B.); (A.P.); (A.D.)
- Correspondence: (D.P.); (G.F.); Tel.: +39-0461283943 (G.F.)
| | - Giulia Fredi
- Department of Industrial Engineering and INSTM Research Unit, University of Trento, Via Sommarive 9, 38123 Trento, Italy; (C.F.); (D.R.); (M.B.); (A.P.); (A.D.)
- Correspondence: (D.P.); (G.F.); Tel.: +39-0461283943 (G.F.)
| | - Daniele Rigotti
- Department of Industrial Engineering and INSTM Research Unit, University of Trento, Via Sommarive 9, 38123 Trento, Italy; (C.F.); (D.R.); (M.B.); (A.P.); (A.D.)
| | - Mauro Bortolotti
- Department of Industrial Engineering and INSTM Research Unit, University of Trento, Via Sommarive 9, 38123 Trento, Italy; (C.F.); (D.R.); (M.B.); (A.P.); (A.D.)
| | - Alessandro Pegoretti
- Department of Industrial Engineering and INSTM Research Unit, University of Trento, Via Sommarive 9, 38123 Trento, Italy; (C.F.); (D.R.); (M.B.); (A.P.); (A.D.)
| | - Eleftheria Xanthopoulou
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, GR-541 24 Thessaloniki, Greece; (E.X.); (D.N.B.)
| | - Dimitrios N. Bikiaris
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, GR-541 24 Thessaloniki, Greece; (E.X.); (D.N.B.)
| | - Andrea Dorigato
- Department of Industrial Engineering and INSTM Research Unit, University of Trento, Via Sommarive 9, 38123 Trento, Italy; (C.F.); (D.R.); (M.B.); (A.P.); (A.D.)
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Jilili Y, Zhen W, Li H, Luo D. Preparation of modified hydrotalcite based on click chemistry and its effect on the shear induced crystallization, rheological behavior and thermal degradability of poly (lactic acid) film. POLYM-PLAST TECH MAT 2022. [DOI: 10.1080/25740881.2022.2033773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Affiliation(s)
- Yikelamu Jilili
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and Xinjiang Uygur Autonomous Region, School of Chemical Engineering and Technology, Xinjiang University, Urumqi, China
| | - Weijun Zhen
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and Xinjiang Uygur Autonomous Region, School of Chemical Engineering and Technology, Xinjiang University, Urumqi, China
| | - Hao Li
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and Xinjiang Uygur Autonomous Region, School of Chemical Engineering and Technology, Xinjiang University, Urumqi, China
| | - Dawei Luo
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and Xinjiang Uygur Autonomous Region, School of Chemical Engineering and Technology, Xinjiang University, Urumqi, China
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Dispenza C, Sabatino MA, Infurna G, Dintcheva NT. Control of end‐of‐life oxygen‐containing groups accumulation in biopolyesters through introduction of crosslinked polysaccharide particles. POLYM ENG SCI 2022. [DOI: 10.1002/pen.25855] [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)
| | | | - Giulia Infurna
- Dipartimento di Ingegneria Università di Palermo Palermo
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Thumwong A, Poltabtim W, Kerdsang P, Saenboonruang K. Roles of Chitosan as Bio-Fillers in Radiation-Vulcanized Natural Rubber Latex and Hybrid Radiation and Peroxide-Vulcanized Natural Rubber Latex: Physical/Mechanical Properties under Thermal Aging and Biodegradability. Polymers (Basel) 2021; 13:3940. [PMID: 34833239 PMCID: PMC8618650 DOI: 10.3390/polym13223940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 10/29/2021] [Accepted: 11/09/2021] [Indexed: 11/20/2022] Open
Abstract
Although natural rubber was regarded as biodegradable, the degradation is a time-consuming process that could take weeks or months for any degradation or substantial weight loss to be observable, resulting in the need for novel processes/methods to accelerate the rubber degradation. As a result, this work investigated the potential utilization of chitosan (CS) as a biodegradation enhancer for radiation-vulcanized natural rubber latex (R-VNRL) and hybrid radiation and peroxide-vulcanized natural rubber latex (RP-VNRL) composites, with varying CS contents (0, 2, 4, or 6 phr). The R-VNRL samples were prepared using 15 kGy gamma irradiation, while the RP-VNRL samples were prepared using a combination of 0.1 phr tert-butyl hydroperoxide (t-BHPO) and 10 kGy gamma irradiation. The properties investigated were biodegradability in the soil and the morphological, chemical, mechanical, and physical properties, both before and after undergoing thermal aging. The results indicated that the biodegradability of both the R-VNRL and RP-VNRL composites was enhanced with the addition of CS, as evidenced by increases in the percentage weight loss (% weight loss) after being buried in soil for 8 weeks from 6.5 ± 0.1% and 6.4 ± 0.1% in a pristine R-VNRL and RP-VNRL samples, respectively, to 10.5 ± 0.1% and 10.2 ± 0.1% in 6-pph CS/R-VNRL and 6-pph CS/RP-VNRL composites, respectively, indicating the biodegradation enhancement of approximately 60%. In addition, the results revealed that the addition of CS could increase the value of tensile modulus by 119%, while decrease the values of tensile strength and elongation at break by 50% and 43%, respectively, in the specimens containing 6-phr CS. In terms of the color appearances, the samples were lighter and yellower after the addition of CS, as evidenced by the noticeably increased L* and b* values, based on the CIE L*a*b* color space system. Furthermore, the investigation into the effects of thermal aging showed that the overall tensile properties for both curing systems were reduced, while varying degrees of color change were observed, with the pristine R-VNRL and RP-VNRL samples having more pronounced degradation/changes for both properties. In conclusion, the overall results suggested that CS had great potential to be applied as a bio-filler in R-VNRL and RP-VNRL composites to effectively promote the biodegradability, environmental friendliness, and resistance to thermal degradation of the composites.
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Affiliation(s)
- Arkarapol Thumwong
- Department of Applied Radiation and Isotopes, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand; (A.T.); (W.P.); (P.K.)
- Department of Materials Science, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
| | - Worawat Poltabtim
- Department of Applied Radiation and Isotopes, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand; (A.T.); (W.P.); (P.K.)
| | - Patcharaporn Kerdsang
- Department of Applied Radiation and Isotopes, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand; (A.T.); (W.P.); (P.K.)
| | - Kiadtisak Saenboonruang
- Department of Applied Radiation and Isotopes, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand; (A.T.); (W.P.); (P.K.)
- Specialized Center of Rubber and Polymer Materials in Agriculture and Industry (RPM), Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
- Special Research Unit of Radiation Technology for Advanced Materials, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
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8
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Yu F, Fei X, He Y, Li H. Poly(lactic acid)-based composite film reinforced with acetylated cellulose nanocrystals and ZnO nanoparticles for active food packaging. Int J Biol Macromol 2021; 186:770-779. [PMID: 34284052 DOI: 10.1016/j.ijbiomac.2021.07.097] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 06/29/2021] [Accepted: 07/14/2021] [Indexed: 10/20/2022]
Abstract
Poly(lactic acid) (PLA)-based composite films reinforced with acetylated cellulose nanocrystals (ACNC) (1 wt%) and ZnO nanoparticles at different content (1, 3, 5 and 7 wt%) were prepared by solution-casting method. The surface acetylation of cellulose nanocrystals improved its dispersion in the PLA matrix. The morphologies, optical, mechanical, barrier, thermal and antibacterial properties of PLA/ACNC/ZnO ternary composite films were investigated. SEM images showed that ACNC and ZnO were evenly distributed in the PLA matrix to form homogenous film when the content of ZnO was ≤5 wt%. The PLA/ACNC/ZnO composite films showed improved UV blocking, mechanical strength, oxygen and water vapor barrier. This ternary composite also exhibited excellent antibacterial activity against E. coli and S. aureus. The migration amounts of Zn2+ from PLA/ACNC/ZnO composite film to food simulants were below the specific migration limit (5 mg/kg). Overall, the desirable properties of the resulting PLA/ACNC/ZnO ternary composite film highlighted the potential application as a promising option for active food packaging materials.
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Affiliation(s)
- Fuyou Yu
- Faculty of Agriculture and Food, Kunming University of Science and Technology, Kunming 650600, China
| | - Xiang Fei
- Faculty of Agriculture and Food, Kunming University of Science and Technology, Kunming 650600, China
| | - Yunqing He
- Faculty of Agriculture and Food, Kunming University of Science and Technology, Kunming 650600, China
| | - Hui Li
- Faculty of Agriculture and Food, Kunming University of Science and Technology, Kunming 650600, China.
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Sharma S, Majumdar A, Butola BS. Tailoring the biodegradability of polylactic acid (PLA) based films and ramie- PLA green composites by using selective additives. Int J Biol Macromol 2021; 181:1092-1103. [PMID: 33892039 DOI: 10.1016/j.ijbiomac.2021.04.108] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 03/30/2021] [Accepted: 04/18/2021] [Indexed: 12/28/2022]
Abstract
This study explores the effect of plasticisers (lotader AX8900, polyethylene glycol and triethyl citrate) on biodegradability of polylactic acid (PLA) and its composites with halloysite nanotubes and ramie fabric by soil burial method. Changes in surface morphology and mechanical properties were evaluated to quantify the degradation behaviour of all samples. The results showed that the relative loss in tensile strength of ramie-PLA composites was more than that of neat PLA or plasticised PLA films. Also, ramie-PLA composite, where ramie fabric was treated with diammonium orthophosphate, had degraded entirely after 60 days of soil burial. It was also confirmed by Fourier transform infrared spectroscopy that the chemical structures of neat PLA and plasticised PLA films changed after the soil burial test. The use of these additives not only reduces the brittleness of PLA but also accelerates the biodegradation rate of PLA. Thus, PLA, along with additives, can help in reduction of carbon footprint and other environmental issues customarily associated with petro based polymers. Therefore, the finding supports the notion of PLA usage as a viable alternative to fossil fuel-based materials.
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Affiliation(s)
- Swati Sharma
- Department of Textile & Fibre Engineering, Indian Institute of Technology Delhi, 110016, India
| | - Abhijit Majumdar
- Department of Textile & Fibre Engineering, Indian Institute of Technology Delhi, 110016, India
| | - Bhupendra Singh Butola
- Department of Textile & Fibre Engineering, Indian Institute of Technology Delhi, 110016, India.
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Wang F, Li Y, Gough CR, Liu Q, Hu X. Dual-Crystallizable Silk Fibroin/Poly(L-lactic Acid) Biocomposite Films: Effect of Polymer Phases on Protein Structures in Protein-Polymer Blends. Int J Mol Sci 2021; 22:ijms22041871. [PMID: 33668676 PMCID: PMC7918901 DOI: 10.3390/ijms22041871] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 02/08/2021] [Accepted: 02/10/2021] [Indexed: 11/30/2022] Open
Abstract
Biopolymer composites based on silk fibroin have shown widespread potential due to their brilliant applications in tissue engineering, medicine and bioelectronics. In our present work, biocomposite nanofilms with different special topologies were obtained through blending silk fibroin with crystallizable poly(L-lactic acid) (PLLA) at various mixture rates using a stirring-reflux condensation blending method. The microstructure, phase components, and miscibility of the blended films were studied through thermal analysis in combination with Fourier-transform infrared spectroscopy and Raman analysis. X-ray diffraction and scanning electron microscope were also used for advanced structural analysis. Furthermore, their conformation transition, interaction mechanism, and thermal stability were also discussed. The results showed that the hydrogen bonds and hydrophobic interactions existed between silk fibroin (SF) and PLLA polymer chains in the blended films. The secondary structures of silk fibroin and phase components of PLLA in composites vary at different ratios of silk to PLLA. The β-sheet content increased with the increase of the silk fibroin content, while the glass transition temperature was raised mainly due to the rigid amorphous phase presence in the blended system. This results in an increase in thermal stability in blended films compared to the pure silk fibroin films. This study provided detailed insights into the influence of synthetic polymer phases (crystalline, rigid amorphous, and mobile amorphous) on protein secondary structures through blending, which has direct applications on the design and fabrication of novel protein–synthetic polymer composites for the biomedical and green chemistry fields.
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Affiliation(s)
- Fang Wang
- Center of Analysis and Testing, Nanjing Normal University, Nanjing 210023, China; (Y.L.); (Q.L.)
- School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
- Correspondence: (F.W.); (X.H.); Tel.: +86-25-8589-8173 (F.W.); +1-856-256-4860 (X.H.)
| | - Yingying Li
- Center of Analysis and Testing, Nanjing Normal University, Nanjing 210023, China; (Y.L.); (Q.L.)
- School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Christopher R. Gough
- Department of Physics and Astronomy, Rowan University, Glassboro, NJ 08028, USA;
- Department of Chemistry and Biochemistry, Rowan University, Glassboro, NJ 08028, USA
| | - Qichun Liu
- Center of Analysis and Testing, Nanjing Normal University, Nanjing 210023, China; (Y.L.); (Q.L.)
- School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Xiao Hu
- Department of Physics and Astronomy, Rowan University, Glassboro, NJ 08028, USA;
- Department of Biomedical Engineering, Rowan University, Glassboro, NJ 08028, USA
- Department of Molecular and Cellular Biosciences, Rowan University, Glassboro, NJ 08028, USA
- Correspondence: (F.W.); (X.H.); Tel.: +86-25-8589-8173 (F.W.); +1-856-256-4860 (X.H.)
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How Surface Properties of Silica Nanoparticles Influence Structural, Microstructural and Biological Properties of Polymer Nanocomposites. MATERIALS 2021; 14:ma14040843. [PMID: 33578744 PMCID: PMC7916496 DOI: 10.3390/ma14040843] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 01/02/2021] [Accepted: 02/04/2021] [Indexed: 11/26/2022]
Abstract
The aim of this work was to study effect of the type of silica nanoparticles on the properties of nanocomposites for application in the guided bone regeneration (GBR). Two types of nanometric silica particles with different size, morphology and specific surface area (SSA) i.e., high specific surface silica (hss-SiO2) and low specific surface silica (lss-SiO2), were used as nano-fillers for a resorbable polymer matrix: poly(L-lactide-co-D,L-lactide), called PLDLA. It was shown that higher surface specific area and morphology (including pore size distribution) recorded for hss-SiO2 influences chemical activity of the nanoparticle; in addition, hydroxyl groups appeared on the surface. The nanoparticle with 10 times lower specific surface area (lss-SiO2) characterized lower chemical action. In addition, a lack of hydroxyl groups on the surface obstructed apatite nucleation (reduced zeta potential in comparison to hss-SiO2), where an apatite layer appeared already after 48 h of incubation in the simulated body fluid (SBF), and no significant changes in crystallinity of PLDLA/lss-SiO2 nanocomposite material in comparison to neat PLDLA foil were observed. The presence and type of inorganic particles in the PLDLA matrix influenced various physicochemical properties such as the wettability, and the roughness parameter note for PLDLA/lss-SiO2 increased. The results of biological investigation show that the bioactive nanocomposites with hss-SiO2 may stimulate osteoblast and fibroblast cells’proliferation and secretion of collagen type I. Additionally, both nanocomposites with the nanometric silica inducted differentiation of mesenchymal cells into osteoblasts at a proliferation stage in in vitro conditions. A higher concentration of alkaline phosphatase (ALP) was observed on the material modified with hss-SiO2 silica.
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Banerjee R, Ray SS. An overview of the recent advances in polylactide‐based sustainable nanocomposites. POLYM ENG SCI 2021. [DOI: 10.1002/pen.25623] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Ritima Banerjee
- Department of Chemical Engineering Calcutta Institute of Technology Howrah India
| | - Suprakas Sinha Ray
- Centre for Nanostructures and Advanced Materials, DSI‐CSIR Nanotechnology Innovation Centre Council for Scientific and Industrial Research Pretoria South Africa
- Department of Chemical Sciences University of Johannesburg Johannesburg South Africa
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13
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Watai JS, Calvão PS, Rigolin TR, Bettini SHDP, Souza AMC. Retardation effect of nanohydroxyapatite on the hydrolytic degradation of poly (lactic acid). POLYM ENG SCI 2020. [DOI: 10.1002/pen.25459] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Juliana Satie Watai
- Department of Materials EngineeringCentro Universitário FEI São Bernardo do Campo SP Brazil
| | - Patrícia Schmid Calvão
- Department of Materials EngineeringCentro Universitário FEI São Bernardo do Campo SP Brazil
| | - Talita Rocha Rigolin
- Department of Materials EngineeringUniversidade Federal de São Carlos São Carlos SP Brazil
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Accelerated Weathering Effects on Poly(3-hydroxybutyrate- co-3-hydroxyvalerate) (PHBV) and PHBV/TiO 2 Nanocomposites. Polymers (Basel) 2020; 12:polym12081743. [PMID: 32764247 PMCID: PMC7464598 DOI: 10.3390/polym12081743] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 07/22/2020] [Accepted: 07/30/2020] [Indexed: 11/25/2022] Open
Abstract
The effect of accelerated weathering on poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and PHBV-based nanocomposites with rutile titanium (IV) dioxide (PHBV/TiO2) was investigated. The accelerated weathering test applied consecutive steps of UV irradiation (at 340 nm and 0.76 W m−2 irradiance) and moisture at 50 °C following the ASTM D4329 standard for up to 2000 h of exposure time. The morphology, chemical structure, crystallization, as well as the mechanical and thermal properties were studied. Samples were characterized after 500, 1000, and 2000 h of exposure time. Different degradation mechanisms were proposed to occur during the weathering exposure and were confirmed based on the experimental data. The PHBV surface revealed cracks and increasing roughness with the increasing exposure time, whereas the PHBV/TiO2 nanocomposites showed surface changes only after 2000 h of accelerated weathering. The degradation of neat PHBV under moisture and UV exposure occurred preferentially in the amorphous phase. In contrast, the presence of TiO2 in the nanocomposites retarded this process, but the degradation would occur simultaneously in both the amorphous and crystalline segments of the polymer after long exposure times. The thermal stability, as well as the temperature and rate of crystallization, decreased in the absence of TiO2. TiO2 not only provided UV protection, but also restricted the physical mobility of the polymer chains, acting as a nucleating agent during the crystallization process. It also slowed down the decrease in mechanical properties. The mechanical properties were shown to gradually decrease for the PHBV/TiO2 nanocomposites, whereas a sharp drop was observed for the neat PHBV after an accelerated weathering exposure. Atomic force microscopy (AFM), using the amplitude modulation–frequency modulation (AM–FM) tool, also confirmed the mechanical changes in the surface area of the PHBV and PHBV/TiO2 samples after accelerated weathering exposure. The changes in the physical and chemical properties of PHBV/TiO2 confirm the barrier activity of TiO2 for weathering attack and its retardation of the degradation process.
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15
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Rheological, thermal and mechanical properties of biodegradable poly(lactic acid)/poly(butylene adipate-co-terephthalate)/poly(propylene carbonate) polyurethane trinary blown films. Polym Bull (Berl) 2020. [DOI: 10.1007/s00289-019-02942-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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16
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Poly(lactic acid)/gelatin foams by non-solvent induced phase separation for biomedical applications. Polym Degrad Stab 2020. [DOI: 10.1016/j.polymdegradstab.2020.109187] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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17
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Polylactic Acid/Polycaprolactone Blends: On the Path to Circular Economy, Substituting Single-Use Commodity Plastic Products. MATERIALS 2020; 13:ma13112655. [PMID: 32532142 PMCID: PMC7321633 DOI: 10.3390/ma13112655] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 06/04/2020] [Accepted: 06/08/2020] [Indexed: 11/17/2022]
Abstract
Circular economy comes to break the linear resource to waste economy, by introducing different strategies, two of them being: using material from renewable sources and producing biodegradable products. The present work aims at developing polylactic acid (PLA), typically made from fermented plant starch, and polycaprolactone (PCL) blends, a biodegradable polyester, to study their potential to be used as substitutes of oil-based commodity plastics. For this, PLA/PCL blends were compounded in a batch and lab scale internal mixer and processed by means of injection molding. Tensile and impact characteristics were determined and compared to different thermoplastic materials, such as polypropylene, high density polyethylene, polystyrene, and others. It has been found that the incorporation of PCL into a PLA matrix can lead to materials in the range of 18.25 to 63.13 megapascals of tensile strength, 0.56 to 3.82 gigapascals of Young’s modulus, 12.65 to 3.27 percent of strain at maximum strength, and 35 to 2 kJ/m2 of notched impact strength. The evolution of the tensile strength fitted the Voigt and Reuss model, while Young’s modulus was successfully described by the rule of mixtures. Toughness of PLA was significantly improved with the incorporation of PCL, significantly increasing the energy required to fracture the specimens. Blends containing more than 20 wt% of PCL did not break when unnotched specimens were tested. Overall, it was found that the obtained PLA/PCL blends can constitute a strong and environmentally friendly alternative to oil-based commodity materials.
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Chang BP, Mohanty AK, Misra M. Studies on durability of sustainable biobased composites: a review. RSC Adv 2020; 10:17955-17999. [PMID: 35517220 PMCID: PMC9054028 DOI: 10.1039/c9ra09554c] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Accepted: 03/20/2020] [Indexed: 12/18/2022] Open
Abstract
This review provides a comprehensive discussion on the long-term durability performance and degradation behaviour of the increasingly popular sustainable biobased composites under various aging environments.
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Affiliation(s)
- Boon Peng Chang
- Bioproducts Discovery and Development Centre
- Department of Plant Agriculture
- Crop Science Building
- University of Guelph
- Guelph
| | - Amar K. Mohanty
- Bioproducts Discovery and Development Centre
- Department of Plant Agriculture
- Crop Science Building
- University of Guelph
- Guelph
| | - Manjusri Misra
- Bioproducts Discovery and Development Centre
- Department of Plant Agriculture
- Crop Science Building
- University of Guelph
- Guelph
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Vigani B, Rossi S, Sandri G, Bonferoni MC, Caramella CM, Ferrari F. Hyaluronic acid and chitosan-based nanosystems: a new dressing generation for wound care. Expert Opin Drug Deliv 2019; 16:715-740. [PMID: 31215823 DOI: 10.1080/17425247.2019.1634051] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
INTRODUCTION The main goal in the management of chronic wounds is the development of multifunctional dressings able to promote a rapid recovery of skin structure and function, improving patient compliance. AREAS COVERED This review discusses the use of nanosystems, based on hyaluronic acid and chitosan or their derivatives for the local treatment of chronic wounds. The bioactive properties of both polysaccharides will be described, as well as the results obtained in the last decade by the in vitro and in vivo evaluation of the wound healing properties of nanosystems based on such polymers. EXPERT OPINION In the last decades, there has been a progressive change in the local treatments of chronic wounds: traditional inert dressings have been replaced by more effective bioactive ones, based on biopolymers taking part in wound healing and able to release the loaded active agents in a controlled way. With the advance of nanotechnologies, the scenario has further changed: nanosystems, characterized by a large area-to-volume ratio, show an improved interaction with the biological substrates, amplifying the activity of the constituent biopolymers. In the coming years, a deeper insight into wound healing mechanisms and the development of new techniques for nanosystem manufacturing will results in the design of new scaffolds with improved performance.
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Affiliation(s)
- Barbara Vigani
- a Department of Drug Science, University of Pavia , Pavia , Italy
| | - Silvia Rossi
- a Department of Drug Science, University of Pavia , Pavia , Italy
| | | | | | | | - Franca Ferrari
- a Department of Drug Science, University of Pavia , Pavia , Italy
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20
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Zhao JL, Pan HW, Yang HL, Bian JJ, Zhang HL, Gao G, Dong LS. Studies on Rheological, Thermal, and Mechanical Properties of Polylactide/Methyl Methacrylate-Butadiene-Styrene Copolymer/Poly(propylene carbonate) Polyurethane Ternary Blends. CHINESE JOURNAL OF POLYMER SCIENCE 2019. [DOI: 10.1007/s10118-019-2276-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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21
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Poly(vinyl alcohol) Hydrogel/Chitosan-Modified Clay Nanocomposites for Wound Dressing Application and Controlled Drug Release. Macromol Res 2019. [DOI: 10.1007/s13233-019-7046-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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22
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Kausar A. Polymer and modified chitosan-based nanocomposite: impending material for technical application. POLYM-PLAST TECH MAT 2019. [DOI: 10.1080/25740881.2019.1587771] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Ayesha Kausar
- School of natural sciences, National University of Sciences and Technology, Islamabad, Pakistan
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23
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Luo Y, Lin Z, Guo G. Biodegradation Assessment of Poly (Lactic Acid) Filled with Functionalized Titania Nanoparticles (PLA/TiO 2) under Compost Conditions. NANOSCALE RESEARCH LETTERS 2019; 14:56. [PMID: 30767099 PMCID: PMC6376044 DOI: 10.1186/s11671-019-2891-4] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 02/04/2019] [Indexed: 02/05/2023]
Abstract
This paper presents a biodegradation study conducted for 90 days under standardized controlled composting conditions of poly (lactic acid) (PLA) filled with functionalized anatase-titania nanofiller (PLA/TiO2 nanocomposites). The surface morphology, thermal properties, percentage of biodegradation, and molecular weight changes at different incubation times were evaluated via visual inspection, scanning electron microscopy (SEM), X-ray diffraction (XRD), differential scanning calorimetry (DSC), and gel permeation chromatography (GPC) by taking degraded samples from compost at the end of target biodegradation time interval. The rapid increase of crystallinity indicated that the PLA and PLA/TiO2 nanocomposites had heterogeneous degradation mechanisms under controlled composting conditions. The biodegradation rate of PLA/TiO2 nanocomposites was higher than that of pure PLA because water molecules easily penetrated the nanocomposites. The dispersion of the nanoparticles in the PLA/TiO2 nanocomposites affected the biodegradation rate of PLA. Moreover, the biodegradation of PLA could be controlled by adding an amount of dispersed TiO2 nanofillers under controlled composting conditions.
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Affiliation(s)
- Yanbing Luo
- School of History and Culture, National Center for Experimental Archaeology Education, Sichuan University, Chengdu, 610064, China.
| | - Zicong Lin
- School of History and Culture, National Center for Experimental Archaeology Education, Sichuan University, Chengdu, 610064, China
| | - Gang Guo
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, 610065, China.
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Improved heat resistance properties of poly(l-lactide)/basalt fiber biocomposites with high crystallinity under forming hybrid-crystalline morphology. Int J Biol Macromol 2019; 122:848-856. [DOI: 10.1016/j.ijbiomac.2018.10.178] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 10/18/2018] [Accepted: 10/25/2018] [Indexed: 11/24/2022]
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25
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Fernández Solarte AM, Villarroel-Rocha J, Morantes CF, Montes ML, Sapag K, Curutchet G, Torres Sánchez RM. Insight into surface and structural changes of montmorillonite and organomontmorillonites loaded with Ag. CR CHIM 2019. [DOI: 10.1016/j.crci.2018.09.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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26
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Valentina I, Haroutioun A, Fabrice L, Vincent V, Roberto P. Poly(Lactic Acid)-Based Nanobiocomposites with Modulated Degradation Rates. MATERIALS 2018; 11:ma11101943. [PMID: 30314349 PMCID: PMC6213022 DOI: 10.3390/ma11101943] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 09/19/2018] [Accepted: 10/05/2018] [Indexed: 01/14/2023]
Abstract
In the field of biodegradable polymers such as poly(Lactic Acid) (PLA), it is quite well known that their kinetics of hydrolysis strongly depend on the pH of the hydrolyzing medium. The idea explored during this study focused on PLA, is the addition of additives that are able to control the pH of water when it diffuses inside the polymer. For instance, acids (i.e. succinic acid, also used as food additive) are bio- and eco- friendly additives that are able to play this role. In order to control the release of these molecules and their dispersion inside the polymer, their intercalation in biocompatible nanofillers like layered double hydroxides (LDH) is here considered. The additives have been dispersed in the polymer by melt compounding, commonly used in the plastic industry. Several composites of PLA (4032D) and LDH intercalated with organic acids (succinic, fumaric, and ascorbic acid) have been obtained by an extrusion process. From all extruded materials, PLA films obtained by compression molding were then subjected to hydrolysis tests. The results showed that the mentioned molecules, dispersed in the polymer, are able to control the rate of hydrolysis, and experimental results show an increase of degradation time for samples containing LDH-organic acid (in particular with LDH-succinic acid), making such hybrid additives an appropriate and efficient solution for PLA.
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Affiliation(s)
- Iozzino Valentina
- Department of Industrial Engineering, University of Salerno Via Giovanni Paolo II, 132, 84084 Fisciano (SA), Italy.
| | - Askanian Haroutioun
- Institut de Chimie de Clermont Ferrand (ICCF), UMR 6296 Université Clermont Auvergne, CNRS, Sigma Clermont, ICCF, F-63000 Clermont-Ferrand, France.
| | - Leroux Fabrice
- Institut de Chimie de Clermont Ferrand (ICCF), UMR 6296 Université Clermont Auvergne, CNRS, Sigma Clermont, ICCF, F-63000 Clermont-Ferrand, France.
| | - Verney Vincent
- Institut de Chimie de Clermont Ferrand (ICCF), UMR 6296 Université Clermont Auvergne, CNRS, Sigma Clermont, ICCF, F-63000 Clermont-Ferrand, France.
| | - Pantani Roberto
- Department of Industrial Engineering, University of Salerno Via Giovanni Paolo II, 132, 84084 Fisciano (SA), Italy.
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27
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Mokhtar A, Djelad A, Bengueddach A, Sassi M. CuNPs-magadiite/chitosan nanocomposite beads as advanced antibacterial agent: Synthetic path and characterization. Int J Biol Macromol 2018; 118:2149-2155. [DOI: 10.1016/j.ijbiomac.2018.07.058] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Revised: 07/04/2018] [Accepted: 07/12/2018] [Indexed: 11/28/2022]
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28
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Improving the resistance to hydrothermal ageing of flame-retarded PLA by incorporating miscible PMMA. Polym Degrad Stab 2018. [DOI: 10.1016/j.polymdegradstab.2018.07.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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29
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Ramesh S, Lungaro L, Tsikritsis D, Weflen E, Rivero IV, Elfick APD. Fabrication and evaluation of poly(lactic acid), chitosan, and tricalcium phosphate biocomposites for guided bone regeneration. J Appl Polym Sci 2018. [DOI: 10.1002/app.46692] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Srikanthan Ramesh
- Department of Industrial and Manufacturing Systems EngineeringIowa State University Ames Iowa 50011
| | - Lisa Lungaro
- Institute for Bioengineering, University of Edinburgh, Mayfield Road Edinburgh EH9 3DW UK
| | - Dimitrios Tsikritsis
- Institute for Bioengineering, University of Edinburgh, Mayfield Road Edinburgh EH9 3DW UK
| | - Eric Weflen
- Department of Industrial and Manufacturing Systems EngineeringIowa State University Ames Iowa 50011
| | - Iris V. Rivero
- Department of Industrial and Manufacturing Systems EngineeringIowa State University Ames Iowa 50011
| | - Alistair P. D. Elfick
- Institute for Bioengineering, University of Edinburgh, Mayfield Road Edinburgh EH9 3DW UK
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30
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Al Tawil E, Monnier A, Nguyen QT, Deschrevel B. Microarchitecture of poly(lactic acid) membranes with an interconnected network of macropores and micropores influences cell behavior. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.06.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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31
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Jesuraj K, Manimuthu RP. Preparation and Characterization of Hybrid Chitosan/PEO–Silica Membrane Doped with Phosphotungstic Acid for PEM Fuel Cell Application. POLYM-PLAST TECH MAT 2018. [DOI: 10.1080/03602559.2018.1455862] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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32
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Utility of Blended Polymeric Formulations Containing Cellulose Nanofibrils for Encapsulation and Controlled Release of Sweet Orange Essential Oil. FOOD BIOPROCESS TECH 2018. [DOI: 10.1007/s11947-018-2082-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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33
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D'Urso L, Acocella MR, Guerra G, Iozzino V, De Santis F, Pantani R. PLA Melt Stabilization by High-Surface-Area Graphite and Carbon Black. Polymers (Basel) 2018; 10:E139. [PMID: 30966175 PMCID: PMC6415102 DOI: 10.3390/polym10020139] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Revised: 01/24/2018] [Accepted: 01/30/2018] [Indexed: 11/17/2022] Open
Abstract
Small amounts of carbon nanofillers, specifically high-surface-area graphite (HSAG) and more effectively carbon black (CB), are able to solve the well-known problem of degradation (molecular weight reduction) during melt processing, for the most relevant biodegradable polymer, namely poly(lactic acid), PLA. This behavior is shown by rheological measurements (melt viscosity during extrusion experiments and time sweep-complex viscosity) combined with gel permeation chromatography (GPC) experiments. PLA's molecular weight, which is heavily reduced during melt extrusion of the neat polymer, can remain essentially unaltered by simple compounding with only 0.1 wt % of CB. At temperatures close to polymer melting by compounding with graphitic fillers, the observed stabilization of PLA melt could be rationalized by scavenging traces of water, which reduces hydrolysis of polyester bonds. Thermogravimetric analyses (TGA) indicate that the same carbon fillers, on the contrary, slightly destabilize PLA toward decomposition reactions, leading to the loss of volatile byproducts, which occur at temperatures higher than 300 °C, i.e., far from melt processing conditions.
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Affiliation(s)
- Luciana D'Urso
- Department of Chemistry and Biology, University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano (SA), Italy.
| | - Maria Rosaria Acocella
- Department of Chemistry and Biology, University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano (SA), Italy.
| | - Gaetano Guerra
- Department of Chemistry and Biology, University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano (SA), Italy.
| | - Valentina Iozzino
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano (SA), Italy.
| | - Felice De Santis
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano (SA), Italy.
| | - Roberto Pantani
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano (SA), Italy.
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34
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Kong J, Li Y, Bai Y, Li Z, Cao Z, Yu Y, Han C, Dong L. High-performance biodegradable polylactide composites fabricated using a novel plasticizer and functionalized eggshell powder. Int J Biol Macromol 2018; 112:46-53. [PMID: 29374566 DOI: 10.1016/j.ijbiomac.2018.01.153] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 01/20/2018] [Accepted: 01/22/2018] [Indexed: 01/16/2023]
Abstract
A novel polyester poly(diethylene glycol succinate) (PDEGS) was synthesized and evaluated as a plasticizer for polylactide (PLA) in this study. Meanwhile, an effective sustainable filler, functionalized eggshell powder (FES) with a surface layer of calcium phenyphosphonate was also prepared. Then, PLA biocomposites were prepared from FES and PDEGS using a facile melt blending process. The addition of 15 wt% PDEGS as plasticizer showed good miscibility with PLA macromolecules and increased the chain mobility of PLA. The crystallization kinetics of PLA composites revealed that the highly effective nucleating FES significantly improved the crystallization ability of PLA at both of non-isothermal and isothermal conditions. In addition, the effective plasticizer and well-dispersed FES increased the elongation at break from 6% of pure PLA to over 200% for all of the plasticized PLA composites. These biodegradable PLA biocomposites, coupled with excellent crystallization ability and tunable mechanical properties, demonstrate their potential as alternatives to traditional commodity plastics.
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Affiliation(s)
- Junjun Kong
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China; University of Chinese Academy of Science, Beijing 100049, China
| | - Yi Li
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China
| | - Yungang Bai
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China
| | - Zonglin Li
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China; University of Chinese Academy of Science, Beijing 100049, China
| | - Zengwen Cao
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China; University of Science and Technology of China, Hefei 230026, China
| | - Yancun Yu
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China.
| | - Changyu Han
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China.
| | - Lisong Dong
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China
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35
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Pal AK, Katiyar V. Melt processing of biodegradable poly(lactic acid)/functionalized chitosan nanocomposite films: mechanical modeling with improved oxygen barrier and thermal properties. JOURNAL OF POLYMER RESEARCH 2017. [DOI: 10.1007/s10965-017-1305-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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36
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Tesfaye M, Patwa R, Gupta A, Kashyap MJ, Katiyar V. Recycling of poly (lactic acid)/silk based bionanocomposites films and its influence on thermal stability, crystallization kinetics, solution and melt rheology. Int J Biol Macromol 2017; 101:580-594. [DOI: 10.1016/j.ijbiomac.2017.03.085] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 03/14/2017] [Accepted: 03/15/2017] [Indexed: 11/29/2022]
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37
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Nehra R, Maiti S, Jacob J. Poly(lactic acid)/(styrene-ethylene-butylene-styrene)-g-maleic anhydride copolymer/sepiolite nanocomposites: Investigation of thermo-mechanical and morphological properties. POLYM ADVAN TECHNOL 2017. [DOI: 10.1002/pat.4108] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Ranjana Nehra
- Centre for Polymer Science and Engineering; Indian Institute of Technology Delhi; New Delhi 110016 India
| | - S.N. Maiti
- Centre for Polymer Science and Engineering; Indian Institute of Technology Delhi; New Delhi 110016 India
| | - Josemon Jacob
- Centre for Polymer Science and Engineering; Indian Institute of Technology Delhi; New Delhi 110016 India
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38
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Song Z, Zhen W. Performance and crystallization kinetics of poly (L-lactic acid) toughened by poly (D-lactic acid). ADVANCES IN POLYMER TECHNOLOGY 2017. [DOI: 10.1002/adv.21816] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Zhongbo Song
- Key Laboratory of Oil and Gas Fine Chemicals; Ministry of Education and Xinjiang Uygur Autonomous Region; Xinjiang University; Urumqi China
| | - Weijun Zhen
- Key Laboratory of Oil and Gas Fine Chemicals; Ministry of Education and Xinjiang Uygur Autonomous Region; Xinjiang University; Urumqi China
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39
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Pal AK, Katiyar V. Thermal degradation behaviour of nanoamphiphilic chitosan dispersed poly (lactic acid) bionanocomposite films. Int J Biol Macromol 2017; 95:1267-1279. [DOI: 10.1016/j.ijbiomac.2016.11.024] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2016] [Revised: 10/05/2016] [Accepted: 11/01/2016] [Indexed: 10/20/2022]
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40
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Lv S, Gu J, Tan H, Zhang Y. The morphology, rheological, and mechanical properties of wood flour/starch/poly(lactic acid) blends. J Appl Polym Sci 2017. [DOI: 10.1002/app.44743] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Shanshan Lv
- Key Laboratory of Bio-based Material Science and Technology (Ministry of Education), College of Material Science and Engineering; Northeast Forestry University; Harbin 150040 People's Republic of China
| | - Jiyou Gu
- Key Laboratory of Bio-based Material Science and Technology (Ministry of Education), College of Material Science and Engineering; Northeast Forestry University; Harbin 150040 People's Republic of China
| | - Haiyan Tan
- Key Laboratory of Bio-based Material Science and Technology (Ministry of Education), College of Material Science and Engineering; Northeast Forestry University; Harbin 150040 People's Republic of China
| | - Yanhua Zhang
- Key Laboratory of Bio-based Material Science and Technology (Ministry of Education), College of Material Science and Engineering; Northeast Forestry University; Harbin 150040 People's Republic of China
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41
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Pal AK, Katiyar V. Nanoamphiphilic Chitosan Dispersed Poly(lactic acid) Bionanocomposite Films with Improved Thermal, Mechanical, and Gas Barrier Properties. Biomacromolecules 2016; 17:2603-18. [DOI: 10.1021/acs.biomac.6b00619] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Akhilesh Kumar Pal
- Department
of Chemical Engineering, Indian Institute of Technology Guwahati, Assam, India
| | - Vimal Katiyar
- Department
of Chemical Engineering, Indian Institute of Technology Guwahati, Assam, India
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42
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Rheological, Morphological and Mechanical Studies of Sustainably Sourced Polymer Blends Based on Poly(Lactic Acid) and Polyamide 11. Polymers (Basel) 2016; 8:polym8030061. [PMID: 30979158 PMCID: PMC6432572 DOI: 10.3390/polym8030061] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Revised: 02/06/2016] [Accepted: 02/16/2016] [Indexed: 11/16/2022] Open
Abstract
The objective of this study was to gain a deep understanding of composition and compatibilization effects on the properties of entirely sustainably sourced polymer blends based on polylactide (PLA) and polyamide 11 (PA11). Generally, PLA cannot challenge regular commodity polymers due to its weak thermo-mechanical properties and its poor elongation properties. With this work, however, we present a promising route to overcome these drawbacks in order to enhance the processability of PLA: blending the polymer with various compositions of other ductile biopolymers such as PA11, as well as mixing PLA/PA11 blends with various amounts of a chain extender, Joncryl ADR®-4368, containing reactive epoxy functions, in a laboratory-scale twin-screw extruder. The effects on the rheological, morphological and mechanical properties were investigated. Results showed that a "self compatibilization" between PLA and PA11 chains can occur but it was found to be insufficient, contrary to recent work reported in the literature. The role of Joncryl as a compatibilizer for the PLA/PA11 system has been demonstrated by the significant decrease of particle size and interfacial tension as well as the improvement of ductile properties. Moreover, a new relaxation peak appeared in the relaxation spectrum, indicating the generation of a copolymer at the polymer-polymer interface.
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Mallick SP, Pal K, Rastogi A, Srivastava P. Evaluation of poly(L-lactide) and chitosan composite scaffolds for cartilage tissue regeneration. Des Monomers Polym 2016. [DOI: 10.1080/15685551.2015.1136535] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Arjmandi R, Hassan A, Haafiz M, Zakaria Z, Islam MS. Effect of hydrolysed cellulose nanowhiskers on properties of montmorillonite/polylactic acid nanocomposites. Int J Biol Macromol 2016; 82:998-1010. [DOI: 10.1016/j.ijbiomac.2015.11.028] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Revised: 10/19/2015] [Accepted: 11/12/2015] [Indexed: 11/27/2022]
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Chitosan-Montmorillonite Polymer Composites: Formulation and Evaluation of Sustained Release Tablets of Aceclofenac. Sci Pharm 2015; 84:603-617. [PMID: 28656939 PMCID: PMC5198020 DOI: 10.3390/scipharm84040603] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Accepted: 10/22/2015] [Indexed: 11/17/2022] Open
Abstract
The present study reports the preparation and evaluation of polymer composites of chitosan and montmorillonite. The prepared polymer composites were evaluated for various powder properties and characterized by FTIR-ATR (Fourier Transform Infrared Spectroscopy- Attenuated Total Reflectance), XRD (X Ray Diffraction), and SEM (Scaning Electron Microscopy) techniques. Heckel and Kawakita equations indicated good compression characteristics of the composites. The polymer composites were employed in formulating sustained release tablets of aceclofenac. The formation of intercalated lamellar structures due to the entrapment of clay particles in the polymeric matrix network was found to be responsible for the drug release retardant behavior of the composites. The in vitro drug release data were fitted to various models like zero-order, first-order, Higuchi, Korsmeyer-Peppas, and Hixon and Crowell for studying the mechanism of drug release from the formulation. The value of release exponent (n) was found to range between 0.59 and 0.82, indicating non-Fickian (anomalous) drug release behavior. Swelling-induced diffusion of the drug through the polymer matrix and polymer matrix chain relaxation appeared to play a role in the release of the drug from the polymer composites.
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Arjmandi R, Hassan A, Mohamad Haafiz MK, Zakaria Z. Partial replacement effect of montmorillonite with cellulose nanowhiskers on polylactic acid nanocomposites. Int J Biol Macromol 2015; 81:91-9. [PMID: 26234577 DOI: 10.1016/j.ijbiomac.2015.07.062] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 07/29/2015] [Indexed: 10/23/2022]
Abstract
In this study, hybrid montmorillonite/cellulose nanowhiskers (MMT/CNW) reinforced polylactic acid (PLA) nanocomposites were produced through solution casting. The CNW filler was first isolated from microcrystalline cellulose by chemical swelling technique. The partial replacement of MMT with CNW in order to produce PLA/MMT/CNW hybrid nanocomposites was performed at 5 parts per hundred parts of polymer (phr) fillers content, based on highest tensile strength values as reported in our previous study. MMT were partially replaced with various amounts of CNW (1, 2, 3, 4 and 5phr). The tensile, thermal, morphological and biodegradability properties of PLA hybrid nanocomposites were investigated. The highest tensile strength of hybrid nanocomposites was obtained with the combination of 4phr MMT and 1phr CNW. Interestingly, the ductility of hybrid nanocomposites increased significantly by 79% at this formulation. The Young's modulus increased linearly with increasing CNW content. Thermogravimetric analysis illustrated that the partial replacement of MMT with CNW filler enhanced the thermal stability of the PLA. This is due to the relatively good dispersion of fillers in the hybrid nanocomposites samples as revealed by transmission electron microscopy. Interestingly, partial replacements of MMT with CNW improved the biodegradability of hybrid nanocomposites compared to PLA/MMT and neat PLA.
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Affiliation(s)
- Reza Arjmandi
- Department of Polymer Engineering, Faculty of Chemical Engineering, Universiti Teknologi Malaysia, Skudai UTM, Johor 81310, Malaysia
| | - Azman Hassan
- Department of Polymer Engineering, Faculty of Chemical Engineering, Universiti Teknologi Malaysia, Skudai UTM, Johor 81310, Malaysia.
| | - M K Mohamad Haafiz
- School of Industrial Technology, Universiti Sains Malaysia, 11800 Penang, Malaysia.
| | - Zainoha Zakaria
- Faculty of Science, Universiti Teknologi Malaysia, UTM Skudai, Johor 81310, Malaysia
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Li L, Wang Z, Ma P, Bai H, Dong W, Chen M. Preparation of polyvinyl alcohol/chitosan hydrogel compounded with graphene oxide to enhance the adsorption properties for Cu(II) in aqueous solution. JOURNAL OF POLYMER RESEARCH 2015. [DOI: 10.1007/s10965-015-0794-3] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Li W, Chen FQ, Yin XC, Qu JP, Yan M. Thermal and Flexural Properties and Water Absorption of Caulis Spatholobi Residue Fiber Reinforced Biodegradable Poly(propylene carbonate) Composites. INT POLYM PROC 2015. [DOI: 10.3139/217.3027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
This paper investigated and compared the thermal and flexural properties and water absorption of natural caulis spatholobi residue fibers reinforced PPC/CSRF composites. Polypropylene carbonate (PPC) was reinforced by caulis spatholobi residue fibers (CSRF) which had been pretreated by continuous steam explosion. The effect of fiber content (10 to 60 wt%) on the properties and water absorption of PPC/CSRF biodegradable composites was investigated. The thermal properties of PPC/CSRF composites indicated that the addition of CSRF could improve the thermal stability of the composites. The flexural strength and modulus of the composites were found to be improved as the content of fiber increased. From the SEM micrographs, it was found that a small amount of fibers were pulled out on fractured surfaces of the composites, showing good network structure between the fiber and PPC matrix. The water absorption amount of the composites increased with increasing the fiber content. This paper demonstrates that the incorporation of low-cost and biodegradable caulis spatholobi residue fiber into PPC provides a practical way to produce completely biodegradable and cost-competitive composites with good mechanical properties.
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Affiliation(s)
- W. Li
- National Engineering Research Center of Novel Equipment for Polymer Processing , South China University of Technology, Guangzhou, Guangdong , PRC
- Key Laboratory of Polymer Processing Engineering of Ministry of Education , South China University of Technology, Guangzhou, Guangdong , PRC
| | - F.-Q. Chen
- National Engineering Research Center of Novel Equipment for Polymer Processing , South China University of Technology, Guangzhou, Guangdong , PRC
- Key Laboratory of Polymer Processing Engineering of Ministry of Education , South China University of Technology, Guangzhou, Guangdong , PRC
| | - X.-C. Yin
- National Engineering Research Center of Novel Equipment for Polymer Processing , South China University of Technology, Guangzhou, Guangdong , PRC
- Key Laboratory of Polymer Processing Engineering of Ministry of Education , South China University of Technology, Guangzhou, Guangdong , PRC
| | - J.-P. Qu
- National Engineering Research Center of Novel Equipment for Polymer Processing , South China University of Technology, Guangzhou, Guangdong , PRC
- Key Laboratory of Polymer Processing Engineering of Ministry of Education , South China University of Technology, Guangzhou, Guangdong , PRC
| | - M. Yan
- National Engineering Research Center of Novel Equipment for Polymer Processing , South China University of Technology, Guangzhou, Guangdong , PRC
- Key Laboratory of Polymer Processing Engineering of Ministry of Education , South China University of Technology, Guangzhou, Guangdong , PRC
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Ma J, Gan C, Xu Q, Zhou J, Zhang J. Amphiphilic copolymer stabilized core–shell structural casein-based emulsion. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.02.027] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Mechanical and thermal property characterization of poly-l-lactide (PLLA) scaffold developed using pressure-controllable green foaming technology. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 49:612-622. [PMID: 25686990 DOI: 10.1016/j.msec.2015.01.025] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Revised: 12/05/2014] [Accepted: 01/06/2015] [Indexed: 02/04/2023]
Abstract
Poly-l-lactide (PLLA) is one of the most promising biological materials used for tissue engineering scaffolds (TES) because of their excellent biodegradability and tenability. Here, microcellular PLLA foams were fabricated by pressure-controllable green foaming technology. Scanning electron microscopy (SEM), dynamic mechanical analysis (DMA), differential scanning calorimetry (DSC), wide angle X-ray diffraction measurement (WAXRD), thermogravimetric (TG) analysis, reflection-Fourier transform infrared (FTIR) analysis, enzymatic degradation study and MTT assay were used to analyze the scaffolds' morphologies, structures and crystallinities, mechanical and biodegradation properties, as well as their cytotoxicity. The results showed that PLLA foams with pore sizes from 8 to 103μm diameters were produced when the saturation pressure decreased from 7.0 to 4.0MPa. Through a combination of StepScan DSC (SSDSC) and WAXRD approaches, it was observed in PLLA foams that the crystallinity, highly-oriented metastable state and rigid amorphous phase increased with the increasing foaming pressure. It was also found that both the glass transition temperature and apparent enthalpy of PLLA significantly increased after the foaming process, which suggested that the changes of microcellular structure could provide PLLA scaffolds better thermal stability and elasticity. Moreover, MTT assessments suggested that the smaller pore size should benefit cell attachment and growth in the scaffold. The results of current work will give us better understanding of the mechanisms involved in structure and property changes of PLLA at the molecular level, which enables more possibilities for the design of PLLA scaffold to satisfy various requirements in biomedical and green chemical applications.
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