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Drakopoulos SX, Vryonis O, Špitalský Z, Peidayesh H, Lendvai L. Thermoplastic Starch Processed under Various Manufacturing Conditions: Thermal and Electrical Properties. Biomacromolecules 2024; 25:5938-5948. [PMID: 39148453 DOI: 10.1021/acs.biomac.4c00602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/17/2024]
Abstract
Eco-friendly materials like carbohydrate-based polymers are important for a sustainable future. Starch is particularly promising because of its biodegradability and abundance but its processing to thermoplastic starch requires optimization. Here we developed thermoplastic maize starch materials based on three manufacturing protocols, namely: (1) starch/glycerol manual mixing and extrusion, (2) starch/glycerol manual mixing, extrusion, and kneading, (3) starch/glycerol/water manual mixing and kneading. The physical properties were investigated by differential scanning calorimetry, thermogravimetric analysis, and broadband dielectric spectroscopy. As expected from a partially miscible blend, the dielectric spectra revealed two distinct α-relaxations for the glycerol-rich and the starch-rich phases, respectively. By employing kneading after extrusion, the miscibility between the two phases was found to improve based on thermal and dielectric methods. Moreover, the addition of water during the premixing stage was observed to facilitate phase separation between starch and glycerol, with the α-relaxation dynamics of the latter being comparable to pure glycerol.
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Affiliation(s)
- Stavros X Drakopoulos
- Princeton Materials Institute, Princeton University, Princeton, New Jersey 08544, United States
| | - Orestis Vryonis
- Tony Davies High Voltage Laboratory, Department of Electronic and Computer Science, Faculty of Engineering and Physical Sciences, University of Southampton, Southampton SO17 1BJ, U.K
| | - Zdenko Špitalský
- Polymer Institute, Slovak Academy of Sciences, Dubravska cesta, 9, 845 41 Bratislava, Slovakia
| | - Hamed Peidayesh
- Polymer Institute, Slovak Academy of Sciences, Dubravska cesta, 9, 845 41 Bratislava, Slovakia
| | - László Lendvai
- Department of Materials Science and Engineering, Széchenyi István University, Egyetem tér 1, Győr H-9026, Hungary
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2
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Peidayesh H, Ondriš L, Saparová S, Kovaľaková M, Fričová O, Chodák I. Biodegradable Nanocomposites Based on Blends of Poly(Butylene Adipate-Co-Terephthalate) (PBAT) and Thermoplastic Starch Filled with Montmorillonite (MMT): Physico-Mechanical Properties. MATERIALS (BASEL, SWITZERLAND) 2024; 17:540. [PMID: 38591383 PMCID: PMC10856518 DOI: 10.3390/ma17030540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Revised: 01/01/2024] [Accepted: 01/08/2024] [Indexed: 04/10/2024]
Abstract
Poly(butylene adipate-co-terephthalate) (PBAT) is widely used for production of biodegradable films due to its high elongation, excellent flexibility, and good processability properties. An effective way to develop more accessible PBAT-based bioplastics for wide application in packaging is blending of PBAT with thermoplastic starch (TPS) since PBAT is costly with prices approximately double or even triple the prices of traditional plastics like polyethylene. This study is focused on investigating the influence of TPS/PBAT blend ratio and montmorillonite (MMT) content on the physical and mechanical properties and molecular mobility of TPS-MMT/PBAT nanocomposites. Obtained TPS-MMT/PBAT nanocomposites through the melt blending process were characterized using tensile testing, dynamic mechanical thermal analysis (DMTA), and X-ray diffraction (XRD), as well as solid-state 1H and 13C NMR spectroscopy. Mechanical properties demonstrated that the addition of TPS to PBAT leads to a substantial decrease in the tensile strength as well as in the elongation at break, while Young's modulus is rising substantially, while the effect of the MMT addition is almost negligible on the tensile stress of the blends. DMTA results confirmed the formation of TPS domains in the PBAT matrix. With increasing TPS content, mobility of starch-rich regions of TPS domains slightly increases. However, molecular mobility in glycerol-rich regions of TPS domains in the blends was slightly restricted. Moreover, the data obtained from 13C CP/MAS NMR spectra indicated that the presence of TPS in the sample decreases the mobility of the PBAT chains, mainly those located at the TPS/PBAT interfaces.
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Affiliation(s)
- Hamed Peidayesh
- Polymer Institute of the Slovak Academy of Sciences, Dúbravská Cesta 9, 845 41 Bratislava, Slovakia;
| | - Leoš Ondriš
- Department of Physics, Faculty of Electrical Engineering and Informatics, Technical University of Košice, Park Komenského 2, 042 00 Košice, Slovakia (S.S.); (M.K.); (O.F.)
| | - Simona Saparová
- Department of Physics, Faculty of Electrical Engineering and Informatics, Technical University of Košice, Park Komenského 2, 042 00 Košice, Slovakia (S.S.); (M.K.); (O.F.)
| | - Mária Kovaľaková
- Department of Physics, Faculty of Electrical Engineering and Informatics, Technical University of Košice, Park Komenského 2, 042 00 Košice, Slovakia (S.S.); (M.K.); (O.F.)
| | - Oľga Fričová
- Department of Physics, Faculty of Electrical Engineering and Informatics, Technical University of Košice, Park Komenského 2, 042 00 Košice, Slovakia (S.S.); (M.K.); (O.F.)
| | - Ivan Chodák
- Polymer Institute of the Slovak Academy of Sciences, Dúbravská Cesta 9, 845 41 Bratislava, Slovakia;
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3
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Xu X, Wang B, Gao W, Sui J, Wang J, Cui B. Effect of different proportions of glycerol and D-mannitol as plasticizer on the properties of extruded corn starch. Front Nutr 2024; 10:1335812. [PMID: 38299182 PMCID: PMC10829104 DOI: 10.3389/fnut.2023.1335812] [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: 11/09/2023] [Accepted: 12/28/2023] [Indexed: 02/02/2024] Open
Abstract
In this study, thermoplastic starch (TPS) was prepared by melt extrusion process, in which glycerol and/or D-mannitol were used as plasticizers, and the effect of different glycerol/D-mannitol ratios (4:0, 3:1, 2:2, 1:3, and 0:4) on the physicochemical properties of the extruded starch samples was investigated. The short-range molecular order, crystallization, gelatinization, thermal stability, and thermal properties of the TPS samples were analyzed through attenuated total reflection-Fourier transform infrared (ATR-FTIR) spectroscopy, X-ray diffraction (XRD), rapid visco analysis (RVA), differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA). The results showed that the crystallinity and short-range molecular order of the TPS samples increased with increasing glycerol content. Conversely, the water absorption index (WAI) and water solubility index (WSI) of the TPS samples decreased with increasing glycerol content. In addition, the TPS samples with higher glycerol content exhibited higher gel and thermal stabilities. This study provides a theoretical basis for starch extrusion and plasticization in the preparation of TPS-based materials with specific properties.
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Affiliation(s)
- Xin Xu
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
- School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, Shandong, China
| | - Bin Wang
- Department of Food Science and Engineering, Shandong Agricultural University, Taian, China
| | - Wei Gao
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
- School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, Shandong, China
| | - Jie Sui
- Shandong Academy of Agricultural Sciences, Jinan, Shandong, China
| | - Jianfei Wang
- Shandong Academy of Agricultural Sciences, Jinan, Shandong, China
| | - Bo Cui
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
- School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, Shandong, China
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4
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Saparová S, Ondriš L, Kovaľaková M, Fričová O, Peidayesh H, Baran A, Hutníková M, Chodák I. Effects of glycerol content on structure and molecular motion in thermoplastic starch-based nanocomposites during long storage. Int J Biol Macromol 2023; 253:126911. [PMID: 37716657 DOI: 10.1016/j.ijbiomac.2023.126911] [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: 06/06/2023] [Revised: 08/04/2023] [Accepted: 09/13/2023] [Indexed: 09/18/2023]
Abstract
Thermoplastic starch-based nanocomposites with varying glycerol content and montmorillonite as a nanofiller were studied using dynamic-mechanical analysis (DMA), X-ray diffraction (XRD) and nuclear magnetic resonance (NMR) during one-year storage. DMA results showed that starch-rich and glycerol-rich domains were present in the samples and during storage for up to one year the content of the amorphous phase decreased and molecular mobility changed. 13C NMR and XRD measurements confirmed that ordered structures were formed during storage and its content was larger for samples with higher glycerol content and increased with the storage time. The data obtained from deconvolutions of 1H broad line NMR spectra indicate increased overall molecular mobility in the samples up to four months of storage, while after nine months the trends were opposite. Lower free water content compared to the total water content in the samples determined according to deconvoluted 1H MAS (magic-angle spinning) NMR spectra indicated that a part of water molecules was immobilized in the ordered structures.
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Affiliation(s)
- Simona Saparová
- Department of Physics, Faculty of Electrical Engineering and Informatics, Technical University of Košice, Park Komenského 2, 042 00 Košice, Slovakia
| | - Leoš Ondriš
- Department of Physics, Faculty of Electrical Engineering and Informatics, Technical University of Košice, Park Komenského 2, 042 00 Košice, Slovakia.
| | - Mária Kovaľaková
- Department of Physics, Faculty of Electrical Engineering and Informatics, Technical University of Košice, Park Komenského 2, 042 00 Košice, Slovakia
| | - Oľga Fričová
- Department of Physics, Faculty of Electrical Engineering and Informatics, Technical University of Košice, Park Komenského 2, 042 00 Košice, Slovakia
| | - Hamed Peidayesh
- Polymer Institute, Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava 45, Slovakia
| | - Anton Baran
- Department of Physics, Faculty of Electrical Engineering and Informatics, Technical University of Košice, Park Komenského 2, 042 00 Košice, Slovakia
| | - Mária Hutníková
- Department of Mathematics and Theoretical Informatics, Faculty of Electrical Engineering and Informatics, Technical University of Košice, Boženy Němcovej 32, 042 00 Košice, Slovakia
| | - Ivan Chodák
- Polymer Institute, Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava 45, Slovakia
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5
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de las Heras RB, Ayala SF, Salazar EM, Carrillo F, Cañavate J, Colom X. Circular Economy Insights on the Suitability of New Tri-Layer Compostable Packaging Films after Degradation in Storage Conditions. Polymers (Basel) 2023; 15:4154. [PMID: 37896398 PMCID: PMC10611226 DOI: 10.3390/polym15204154] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 10/16/2023] [Accepted: 10/17/2023] [Indexed: 10/29/2023] Open
Abstract
The environmental degradation of the films used in packaging is a key factor in their commercial use. Industrial and academic research is aimed at obtaining materials that have degradation features that ensure their eco-sustainability but, at the same time, preserve their use properties during storage and distribution periods. This study analyzes the degradability behavior over time of commercial packaging that meets the requirements of the UNE 13432 standard and the prEN 17427 (2020) home composting certification requirements under standard storage conditions. The study attempts to provide insight into the durability of the films under standard storage conditions, verifying that this type of packaging has a useful life of more than 12 months and that after this storage period it still retains the usability properties for which it was conceived. The analyzed sample has been manufactured using a three-layer technology under some commercial formulations based on PBAT + STARCH + PLA and has been analyzed monthly for 12 consecutive months. The macroscopic monitoring of the degradation of the sample has been carried out through the evolution of the mechanical properties and the quantification of the color changes (very important in films) via colorimetry. The nature of the observed variations has been justified at the microstructural level from the data obtained in calorimetric analysis (DSC) and from the characterization using FTIR. The results indicate a loss of properties in the tensile, elongation and impact tests and a behavior of stability or improvement in the tear properties of the film. Analyzing the microstructural changes, it is observed that the degradation of a hydrolytic and thermo-oxidative type occurs in the amorphous part of the film. The conclusion of this study is that the proposed packaging, focused on domestic composting and stored under standard conditions, has a useful life of more than 12 months. This period should be sufficient to cover the stages of production, storage and final use.
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Affiliation(s)
- Ricardo Ballestar de las Heras
- Research Department of Sphere Group Spain, P.I El Pradillo 3 C/Sphere, Parcela 9, 50690 Pedrola, Zaragoza, Spain; (R.B.d.l.H.); (S.F.A.); (E.M.S.)
- Department of Chemical Engineering ESEIAAT, Universitat Politècnica de Catalunya BarcelonaTech. Colom 1, 08222 Terrassa, Barcelona, Spain; (F.C.); (J.C.)
| | - Sergio Fernández Ayala
- Research Department of Sphere Group Spain, P.I El Pradillo 3 C/Sphere, Parcela 9, 50690 Pedrola, Zaragoza, Spain; (R.B.d.l.H.); (S.F.A.); (E.M.S.)
| | - Estefanía Molina Salazar
- Research Department of Sphere Group Spain, P.I El Pradillo 3 C/Sphere, Parcela 9, 50690 Pedrola, Zaragoza, Spain; (R.B.d.l.H.); (S.F.A.); (E.M.S.)
| | - Fernando Carrillo
- Department of Chemical Engineering ESEIAAT, Universitat Politècnica de Catalunya BarcelonaTech. Colom 1, 08222 Terrassa, Barcelona, Spain; (F.C.); (J.C.)
| | - Javier Cañavate
- Department of Chemical Engineering ESEIAAT, Universitat Politècnica de Catalunya BarcelonaTech. Colom 1, 08222 Terrassa, Barcelona, Spain; (F.C.); (J.C.)
| | - Xavier Colom
- Department of Chemical Engineering ESEIAAT, Universitat Politècnica de Catalunya BarcelonaTech. Colom 1, 08222 Terrassa, Barcelona, Spain; (F.C.); (J.C.)
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6
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Wu Y, Tang R, Guo A, Tao X, Hu Y, Sheng X, Qu P, Wang S, Li J, Li F. Enhancing Starch-Based Packaging Materials: Optimization of Plasticizers and Process Parameters. MATERIALS (BASEL, SWITZERLAND) 2023; 16:5953. [PMID: 37687646 PMCID: PMC10488439 DOI: 10.3390/ma16175953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 08/25/2023] [Accepted: 08/29/2023] [Indexed: 09/10/2023]
Abstract
In order to actively promote green production and address these concerns, there is an urgent need for new packaging materials to replace traditional plastic products. Starch-based packaging materials, composed of starch, fiber, and plasticizers, offer a degradable and environmentally friendly alternative. However, there are challenges related to the high crystallinity and poor compatibility between thermoplastic starch and fibers, resulting in decreased mechanical properties. To address these challenges, a novel approach combining plasticizer optimization and response surface method (RSM) optimization has been proposed to enhance the mechanical properties of starch-based packaging materials. This method leverages the advantages of composite plasticizers and process parameters. Scanning electron microscopy and X-ray crystallography results demonstrate that the composite plasticizer effectively disrupts the hydrogen bonding and granule morphology of starch, leading to a significant reduction in crystallinity. Fourier transform infrared spectroscopy results show that an addition of glycerol and D-fructose to the starch can form new hydrogen bonds between them, resulting in an enhanced plasticizing effect. The optimal process parameters are determined using the RSM, resulting in a forming temperature of 198 °C, a forming time of 5.4 min, and an AC content of 0.84 g. Compared with the non-optimized values, the tensile strength increases by 12.2% and the rebound rate increases by 8.1%.
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Affiliation(s)
- Yue Wu
- School of Mechanical and Automotive Engineering, Liaocheng University, Liaocheng 252000, China; (Y.W.); (R.T.); (X.T.); (X.S.); (P.Q.); (S.W.)
| | - Rongji Tang
- School of Mechanical and Automotive Engineering, Liaocheng University, Liaocheng 252000, China; (Y.W.); (R.T.); (X.T.); (X.S.); (P.Q.); (S.W.)
| | - Anfu Guo
- School of Mechanical and Automotive Engineering, Liaocheng University, Liaocheng 252000, China; (Y.W.); (R.T.); (X.T.); (X.S.); (P.Q.); (S.W.)
| | - Xiaodong Tao
- School of Mechanical and Automotive Engineering, Liaocheng University, Liaocheng 252000, China; (Y.W.); (R.T.); (X.T.); (X.S.); (P.Q.); (S.W.)
| | - Yingbin Hu
- Department of Mechanical and Manufacturing Engineering, Miami University, Oxford, OH 45056, USA;
| | - Xianliang Sheng
- School of Mechanical and Automotive Engineering, Liaocheng University, Liaocheng 252000, China; (Y.W.); (R.T.); (X.T.); (X.S.); (P.Q.); (S.W.)
| | - Peng Qu
- School of Mechanical and Automotive Engineering, Liaocheng University, Liaocheng 252000, China; (Y.W.); (R.T.); (X.T.); (X.S.); (P.Q.); (S.W.)
| | - Shaoqing Wang
- School of Mechanical and Automotive Engineering, Liaocheng University, Liaocheng 252000, China; (Y.W.); (R.T.); (X.T.); (X.S.); (P.Q.); (S.W.)
| | - Jianfeng Li
- School of Mechanical Engineering, Shandong University, Jinan 250061, China; (J.L.); (F.L.)
| | - Fangyi Li
- School of Mechanical Engineering, Shandong University, Jinan 250061, China; (J.L.); (F.L.)
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Heydari A, KhajeHassani M, Daneshafruz H, Hamedi S, Dorchei F, Kotlár M, Kazeminava F, Sadjadi S, Doostan F, Chodak I, Sheibani H. Thermoplastic starch/bentonite clay nanocomposite reinforced with vitamin B 2: Physicochemical characteristics and release behavior. Int J Biol Macromol 2023; 242:124742. [PMID: 37148934 DOI: 10.1016/j.ijbiomac.2023.124742] [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: 02/12/2023] [Revised: 04/03/2023] [Accepted: 05/01/2023] [Indexed: 05/08/2023]
Abstract
This study presents the development and characterization of a nanocomposite material, consisting of thermoplastic starch (TPS) reinforced with bentonite clay (BC) and encapsulated with vitamin B2 (VB). The research is motivated by the potential of TPS as a renewable and biodegradable substitute for petroleum-based materials in the biopolymer industry. The effects of VB on the physicochemical properties of TPS/BC films, including mechanical and thermal properties, water uptake, and weight loss in water, were investigated. In addition, the surface morphology and chemical composition of the TPS samples were analyzed using high-resolution SEM microscopy and EDS, providing insight into the structure-property relationship of the nanocomposites. The results showed that the addition of VB significantly increased the tensile strength and Young's modulus of TPS/BC films, with the highest values observed for nanocomposites containing 5 php of VB and 3 php of BC. Furthermore, the release of VB was controlled by the BC content, with higher BC content leading to lower VB release. These findings demonstrate the potential of TPS/BC/VB nanocomposites as environmentally friendly materials with improved mechanical properties and controlled release of VB, which can have significant applications in the biopolymer industry.
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Affiliation(s)
- Abolfazl Heydari
- Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 84541 Bratislava, Slovakia; National Institute of Rheumatic Diseases, Nábrežie I. Krasku 4782/4, 921 12 Piešťany, Slovakia.
| | - Milad KhajeHassani
- Department of Chemistry, Shahid Bahonar University of Kerman, Kerman 76169, Iran
| | - Haniyeh Daneshafruz
- Department of Chemistry, Shahid Bahonar University of Kerman, Kerman 76169, Iran
| | - Sepideh Hamedi
- Faculty of New Technologies Engineering, Shahid Beheshti University, Tehran, Iran
| | - Faeze Dorchei
- Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 84541 Bratislava, Slovakia
| | - Mário Kotlár
- Centre for Nanodiagnostics of Materials, Faculty of Materials Science and Technology, Slovak University of Technology, Vazovova 5, Bratislava 81243, Slovakia
| | - Fahimeh Kazeminava
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Samahe Sadjadi
- Gas Conversion Department, Faculty of Petrochemicals, Iran polymer and Petrochemical Institute, PO Box 14975-112, Tehran, Iran
| | - Farideh Doostan
- Endocrinology and Metabolism Research Center, Institute of Basic and Clinical Physiology Sciences, Kerman University of Medical Sciences, Kerman, Iran
| | - Ivan Chodak
- Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 84541 Bratislava, Slovakia
| | - Hassan Sheibani
- Department of Chemistry, Shahid Bahonar University of Kerman, Kerman 76169, Iran
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Gómez-López RA, Montilla-Buitrago CE, Villada-Castillo HS, Sáenz-Galindo A, Avalos-Belmontes F, Serna-Cock L. Co-Plasticization of Starch with Glycerol and Isosorbide: Effect on Retrogradation in Thermo-Plastic Cassava Starch Films. Polymers (Basel) 2023; 15:polym15092104. [PMID: 37177247 PMCID: PMC10181081 DOI: 10.3390/polym15092104] [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: 12/20/2022] [Revised: 02/24/2023] [Accepted: 02/26/2023] [Indexed: 05/15/2023] Open
Abstract
Thermoplastic starch (TPS) has emerged as an essential alternative to produce environmentally friendly packaging; however, retrogradation is a disadvantage that affects its shelf life. This study analyzed the co-plasticizing effect of isosorbide on the mechanical, thermal, physicochemical, and microstructural properties and the retrogradation of films obtained by blown film extrusion from thermoplasticized starch with mixtures of glycerol and isosorbide in different ratios (3:0, 2:1, 1:2, and 0:3, respectively). The results showed that the higher concentration of isosorbide significantly increased the tensile strength; however, it reduced the elongation. Retrogradation modeled using the Avrami equation showed that the presence of isosorbide reduced the retrogradation rate (k) and modified the recrystallization mechanism (n). The relative crystallinity in the plasticized TPS films was reduced to 89%, and the adsorption significantly decreased. Isosorbide was very important in reducing the retrogradation of TPS. The best performance was obtained with the 2:1 ratio of glycerol/isosorbide due to the synergistic effect between the plasticizers. The results would allow tuning the properties of TPS films by combining glycerol/isosorbide in different ratios, which enables the design of materials tailored to potential application requirements.
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Affiliation(s)
- Rudy A Gómez-López
- Grupo de Investigación Ciencia y Tecnología de Biomoléculas de Interés Agroindustrial, (CYTBIA), Departamento de Ingeniería Agroindustrial, Facultad de Ciencias Agrarias, Universidad del Cauca, Cauca 190017, Colombia
| | - Camilo E Montilla-Buitrago
- Grupo de Investigación Ciencia y Tecnología de Biomoléculas de Interés Agroindustrial, (CYTBIA), Departamento de Ingeniería Agroindustrial, Facultad de Ciencias Agrarias, Universidad del Cauca, Cauca 190017, Colombia
| | - Héctor S Villada-Castillo
- Grupo de Investigación Ciencia y Tecnología de Biomoléculas de Interés Agroindustrial, (CYTBIA), Departamento de Ingeniería Agroindustrial, Facultad de Ciencias Agrarias, Universidad del Cauca, Cauca 190017, Colombia
| | - Aidé Sáenz-Galindo
- Facultad de Ciencias Químicas, Universidad Autónoma de Coahuila, Boulevard Venustiano Carranza y José Cárdenas Valdés, Colonia República, Saltillo 25280, México
| | - Felipe Avalos-Belmontes
- Facultad de Ciencias Químicas, Universidad Autónoma de Coahuila, Boulevard Venustiano Carranza y José Cárdenas Valdés, Colonia República, Saltillo 25280, México
| | - Liliana Serna-Cock
- Facultad de Ingeniería y Administración, Universidad Nacional de Colombia Sede Palmira, Palmira 763533, Colombia
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9
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Effect of shear and heat milling of starch on the properties of tapioca starch/cellulose nanofiber composites. Carbohydr Polym 2023; 306:120618. [PMID: 36746575 DOI: 10.1016/j.carbpol.2023.120618] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 01/10/2023] [Accepted: 01/21/2023] [Indexed: 01/27/2023]
Abstract
Thermoplastic starch was prepared from tapioca starch (TS) and thermo-mechanical modified TS (ModifiedTS) using glycerol as a plasticizer and cellulose nanofiber (CNF) as a reinforcement. The ModifiedTS was produced using shear-and-heat milling machining (SHMM), which effectively reduced starch crystallinity and transformed the granule shape without a chemical reaction. The modified starch with low crystallinity and numerous active hydrogen bonds clearly showed Vh crystal structure after blending with glycerol. The mechanical properties changed significantly upon addition of 10 wt% CNF into plasticized ModifiedTS, which enhanced the yield strength and decreased the elongation at break. A dynamic mechanical analysis revealed a higher glass transition temperature (Tg) of the ModifiedTS films. Tg for the starch film increased from 9.3 °C of the TS film to 29.8 °C of the ModifiedTS film. These results suggest that SHMM provides the ability to widely adjust the mechanical properties of glycerol plasticized starch materials by enhancing interfacial interactions with CNF.
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10
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Castro JM, Montalbán MG, Domene-López D, Martín-Gullón I, García-Quesada JC. Study of the Plasticization Effect of 1-Ethyl-3-methylimidazolium Acetate in TPS/PVA Biodegradable Blends Produced by Melt-Mixing. Polymers (Basel) 2023; 15:polym15071788. [PMID: 37050402 PMCID: PMC10098962 DOI: 10.3390/polym15071788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 03/27/2023] [Accepted: 04/02/2023] [Indexed: 04/14/2023] Open
Abstract
The first step towards the production and marketing of bioplastics based on renewable and sustainable materials is to know their behavior at a semi-industrial scale. For this reason, in this work, the properties of thermoplastic starch (TPS)/polyvinyl alcohol (PVA) films plasticized by a green solvent, as the 1-ethyl-3-methylimidazolium acetate ([Emim+][Ac-]) ionic liquid, produced by melt-mixing were studied. These blends were prepared with a different content of [Emim+][Ac-] (27.5-42.5 %wt.) as a unique plasticizer. According to the results, this ionic liquid is an excellent plasticizer due to the transformation of the crystalline structure of the starch to an amorphous state, the increase in flexibility, and the drop in Tg, as the [Emim+][Ac-] amount increases. These findings show that the properties of these biomaterials could be modified in the function of [Emim+][Ac-] content in the formulations of TPS, depending on their final use, thus becoming a functional alternative to conventional polymers.
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Affiliation(s)
- Jennifer M Castro
- Chemical Engineering Department, University of Alicante, Apartado 99, 03080 Alicante, Spain
- Institute of Chemical Process Engineering, University of Alicante, Apartado 99, 03080 Alicante, Spain
| | - Mercedes G Montalbán
- Chemical Engineering Department, Faculty of Chemistry, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, 30071 Murcia, Spain
| | - Daniel Domene-López
- Institute of Chemical Process Engineering, University of Alicante, Apartado 99, 03080 Alicante, Spain
| | - Ignacio Martín-Gullón
- Chemical Engineering Department, University of Alicante, Apartado 99, 03080 Alicante, Spain
- Institute of Chemical Process Engineering, University of Alicante, Apartado 99, 03080 Alicante, Spain
| | - Juan C García-Quesada
- Chemical Engineering Department, University of Alicante, Apartado 99, 03080 Alicante, Spain
- Institute of Chemical Process Engineering, University of Alicante, Apartado 99, 03080 Alicante, Spain
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11
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Guarás MP, Menossi M, Nicolini AT, Alvarez VA, Ludueña LN. Bio-nanocomposites films based on unmodified and modified thermoplastic starch reinforced with chemically modified nanoclays. JOURNAL OF MATERIALS SCIENCE 2023; 58:5456-5476. [PMID: 36969327 PMCID: PMC10010222 DOI: 10.1007/s10853-023-08354-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 02/27/2023] [Indexed: 06/18/2023]
Abstract
UNLABELLED The use of polymers capable of being degraded by the action of microorganisms and/or enzymes without causing harmful effects is a strategy in waste management and environmental care. In this work, bio-nanocomposites based on thermoplastic starch (TPS) were synthesized by reactive extrusion using a twin-screw extruder. Two strategies were evaluated to reduce the disadvantages of TPS for packaging applications. First, starch was chemically modified producing the reaction of native starch with chemical reagents that introduce new functional groups to reduce the water adsorption. And two, nano-fillers were incorporated into TPS in order to enhance the mechanical and barrier properties, driving to materials with improved performance/cost ratio. The synergistic strategies of chemical modification and incorporation of modified nanoclays were also effective to reduce the dependence of properties of TPS with the environment humidity and the evolution thereof over time, which influences the performance during the service life of the product. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s10853-023-08354-1.
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Affiliation(s)
- M. P. Guarás
- Grupo de Materiales Compuestos Termoplásticos (CoMP), Facultad de Ingeniería, Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA), Universidad Nacional de Mar del Plata (UNMdP) y Consejo Nacional de Investigaciones Científicas yTécnicas (CONICET), Avenida Colón 10850, 7600 Mar del Plata, Buenos Aires, Argentina
| | - M. Menossi
- Grupo de Materiales Compuestos Termoplásticos (CoMP), Facultad de Ingeniería, Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA), Universidad Nacional de Mar del Plata (UNMdP) y Consejo Nacional de Investigaciones Científicas yTécnicas (CONICET), Avenida Colón 10850, 7600 Mar del Plata, Buenos Aires, Argentina
| | - A. Torres Nicolini
- Grupo de Materiales Compuestos Termoplásticos (CoMP), Facultad de Ingeniería, Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA), Universidad Nacional de Mar del Plata (UNMdP) y Consejo Nacional de Investigaciones Científicas yTécnicas (CONICET), Avenida Colón 10850, 7600 Mar del Plata, Buenos Aires, Argentina
| | - V. A. Alvarez
- Grupo de Materiales Compuestos Termoplásticos (CoMP), Facultad de Ingeniería, Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA), Universidad Nacional de Mar del Plata (UNMdP) y Consejo Nacional de Investigaciones Científicas yTécnicas (CONICET), Avenida Colón 10850, 7600 Mar del Plata, Buenos Aires, Argentina
| | - L. N. Ludueña
- Grupo de Materiales Compuestos Termoplásticos (CoMP), Facultad de Ingeniería, Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA), Universidad Nacional de Mar del Plata (UNMdP) y Consejo Nacional de Investigaciones Científicas yTécnicas (CONICET), Avenida Colón 10850, 7600 Mar del Plata, Buenos Aires, Argentina
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12
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Iacovone C, Yulita F, Cerini D, Peña D, Candal R, Goyanes S, Pietrasanta LI, Guz L, Famá L. Effect of TiO 2 Nanoparticles and Extrusion Process on the Physicochemical Properties of Biodegradable and Active Cassava Starch Nanocomposites. Polymers (Basel) 2023; 15:polym15030535. [PMID: 36771837 PMCID: PMC9918894 DOI: 10.3390/polym15030535] [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: 11/18/2022] [Revised: 01/08/2023] [Accepted: 01/18/2023] [Indexed: 01/22/2023] Open
Abstract
Biodegradable polymers have been strongly recognized as an alternative to replace traditional petrochemical plastics, which have become a global problem due to their long persistence in the environment. In this work, the effect of the addition of titanium dioxide nanoparticles (TiO2NP) on the morphology, physicochemical properties and biodegradation under industrial composting conditions of cassava starch-based nanocomposites obtained by extrusion at different screw speeds (80 and 120 rpm) were investigated. Films performed at 120 rpm (S120 and S120-TiO2NP) showed completely processed starch and homogeneously distributed nanoparticles, leading to much more flexible nanocomposites than those obtained at 80 rpm. The incorporation of TiO2NP led to an increase in storage modulus of all films and, in the case of S120-TiO2NP, to higher strain at break values. From the Kohlrausch-Williams-Watts theoretical model (KWW), an increase in the relaxation time of the nanocomposites was observed due to a decrease in the number of polymer chains involved in the relaxation process. Additionally, S120-TiO2NP showed effective protection against UV light, greater hydrophobicity and faster biodegradation in compost, resulting in a promising material for food packaging applications.
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Affiliation(s)
- Carolina Iacovone
- Laboratorio de Polímeros y Materiales Compuestos (LPMC), Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires C1428EGA, Argentina
| | - Federico Yulita
- Laboratorio de Polímeros y Materiales Compuestos (LPMC), Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires C1428EGA, Argentina
| | - Daniel Cerini
- Laboratorio de Polímeros y Materiales Compuestos (LPMC), Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires C1428EGA, Argentina
| | - Daniel Peña
- Laboratorio de Polímeros y Materiales Compuestos (LPMC), Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires C1428EGA, Argentina
| | - Roberto Candal
- Instituto de Investigación e Ingeniería Ambiental, Escuela de Hábitat y Sostenibilidad, Campus Miguelete, Universidad Nacional de San Martín, San Martín 1650, Provincia de Buenos Aires, Argentina
| | - Silvia Goyanes
- Laboratorio de Polímeros y Materiales Compuestos (LPMC), Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires C1428EGA, Argentina
- Instituto de Física de Buenos Aires (IFIBA-CONICET), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires C1428EGA, Argentina
| | - Lía I. Pietrasanta
- Instituto de Física de Buenos Aires (IFIBA-CONICET), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires C1428EGA, Argentina
- Centro de Microscopías Avanzadas y Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires C1428EGA, Argentina
| | - Lucas Guz
- Instituto de Investigación e Ingeniería Ambiental, Escuela de Hábitat y Sostenibilidad, Campus Miguelete, Universidad Nacional de San Martín, San Martín 1650, Provincia de Buenos Aires, Argentina
| | - Lucía Famá
- Laboratorio de Polímeros y Materiales Compuestos (LPMC), Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires C1428EGA, Argentina
- Instituto de Física de Buenos Aires (IFIBA-CONICET), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires C1428EGA, Argentina
- Correspondence: ; Tel.: +54-11-5285-7511 (ext. 57511)
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13
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Šmídová N, Peidayesh H, Baran A, Fričová O, Kovaľaková M, Králiková R, Chodák I. Influence of Air Humidity Level on the Structure and Mechanical Properties of Thermoplastic Starch-Montmorillonite Nanocomposite during Storage. MATERIALS (BASEL, SWITZERLAND) 2023; 16:ma16030900. [PMID: 36769907 PMCID: PMC9917559 DOI: 10.3390/ma16030900] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Revised: 01/10/2023] [Accepted: 01/11/2023] [Indexed: 06/12/2023]
Abstract
Thermoplastic starch (TPS) consisting of corn starch and glycerol as a plasticizer, and TPS-montmorillonite (MMT) nanocomposite were stored at room temperature in the air with relative humidities (RH) of 11, 55 and 85% for seven weeks. Mechanical testing and dynamic mechanical thermal analysis (DMTA) were performed to detect changes in their mechanical properties. Solid-state NMR spectroscopy monitoring the changes in molecular mobility in the samples provided an insight into relations between mechanical properties and local structure. The results of mechanical testing indicated that the addition of MMT results in the increase in the tensile strength and Young's modulus while elongation at break decreased, indicating the reinforcing effect of MMT. DMTA experiments revealed a decrease in glass transition temperature of starch-rich phase below room temperature for samples stored at higher RH (55 and 85%). This indicates that absorbed water molecules had additional plasticizing effect on starch resulting in higher mobility of starch chain segments. Recrystallization in these samples was deduced from the shape of cross-polarization magic-angle spinning 13C NMR spectra. The shape of broad-line 1H NMR spectra reflected changes in molecular mobility in the studied samples during seven weeks of storage and revealed that a high amount of water molecules impacts the starch intermolecular hydrogen bond density.
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Affiliation(s)
- Natália Šmídová
- Department of Physics, Faculty of Electrical Engineering and Informatics, Technical University of Košice, Park Komenského 2, 042 00 Košice, Slovakia
| | - Hamed Peidayesh
- Polymer Institute, Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia
| | - Anton Baran
- Department of Physics, Faculty of Electrical Engineering and Informatics, Technical University of Košice, Park Komenského 2, 042 00 Košice, Slovakia
| | - Oľga Fričová
- Department of Physics, Faculty of Electrical Engineering and Informatics, Technical University of Košice, Park Komenského 2, 042 00 Košice, Slovakia
| | - Mária Kovaľaková
- Department of Physics, Faculty of Electrical Engineering and Informatics, Technical University of Košice, Park Komenského 2, 042 00 Košice, Slovakia
| | - Ružena Králiková
- Department of Environmental Engineering, Faculty of Mechanical Engineering, Technical University of Košice, Park Komenského 5, 042 00 Košice, Slovakia
| | - Ivan Chodák
- Polymer Institute, Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia
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Chen Y, Shull KR. Controlling the Properties of Thermoplastic Starch Films with Hydrogen Bonding Plasticizers. CARBOHYDRATE POLYMER TECHNOLOGIES AND APPLICATIONS 2023. [DOI: 10.1016/j.carpta.2023.100291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
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15
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Ma H, Qin W, Guo B, Li P. Effect of plant tannin and glycerol on thermoplastic starch: Mechanical, structural, antimicrobial and biodegradable properties. Carbohydr Polym 2022; 295:119869. [DOI: 10.1016/j.carbpol.2022.119869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 06/24/2022] [Accepted: 07/11/2022] [Indexed: 11/25/2022]
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16
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Lu J, Hu O, Hou L, Ye D, Weng S, Jiang X. Highly tough and ionic conductive starch/poly(vinyl alcohol) hydrogels based on a universal soaking strategy. Int J Biol Macromol 2022; 221:1002-1011. [PMID: 36113584 DOI: 10.1016/j.ijbiomac.2022.09.083] [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: 06/06/2022] [Revised: 08/22/2022] [Accepted: 09/09/2022] [Indexed: 11/30/2022]
Abstract
High-performance hydrogels with favorable mechanical strength, high modulus, sufficient ionic conductivity and freezing resistance have far-ranging applications in flexible electronic equipment. Nevertheless, it is challenging to combine admirable mechanical properties and high ionic conductivity into one hydrogel. Herein, a facile strategy was developed for the preparation of the hydrogel with excellent strength (1.45 MPa), super Young's modulus (8.85 MPa) and high conductivity (1.47 S/m) using starch and poly(vinyl alcohol) (PVA) as raw materials. The starch/PVA/Gly/Na3Cit (SPGN) gel was firstly cross-linked by crystalline regions of PVA upon freezing-thawing cycles. It was further immersed in the saturated Na3Cit solution to enhance the interaction between the substrates through the salting-out effect. The effect of soaking time on the crystallinity, intermolecular interactions, mechanical and electrical properties of SPGN gel was demonstrated by X-ray diffraction, Fourier transform infrared spectroscopy, tensile and impedance testing measurements. The introduction of glycerol and Na3Cit also endowed SPGN gels with favorable anti-freezing properties. The SPGN gel could maintain high mechanical flexibility and ionic conductivity at -15 °C.
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Affiliation(s)
- Jing Lu
- School of Chemical Engineering, Fuzhou University, Fuzhou 350108, China
| | - Oudong Hu
- School of Chemical Engineering, Fuzhou University, Fuzhou 350108, China
| | - Linxi Hou
- School of Chemical Engineering, Fuzhou University, Fuzhou 350108, China
| | - DeZhan Ye
- State Key Laboratory of New Textile Materials & Advanced Processing Technologies, Wuhan Textile University, No. 1 Yangguang Avenue, Jiangxia District, Wuhan, Hubei 430200, China.
| | - Sen Weng
- Qingyuan Innovation Laboratory, Quanzhou 362114, China
| | - Xiancai Jiang
- School of Chemical Engineering, Fuzhou University, Fuzhou 350108, China; Qingyuan Innovation Laboratory, Quanzhou 362114, China.
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17
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Fričová O, Hutníková M. Changes in molecular mobility of sorbitol plasticized starch during aging. J Appl Polym Sci 2022. [DOI: 10.1002/app.52948] [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)
- Ol'ga Fričová
- Faculty of Electrical Engineering and Informatics Technical University of Košice Košice Slovakia
| | - Mária Hutníková
- Faculty of Electrical Engineering and Informatics Technical University of Košice Košice Slovakia
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18
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Effective Aging Inhibition of the Thermoplastic Corn Starch Films through the Use of Green Hybrid Filler. Polymers (Basel) 2022; 14:polym14132567. [PMID: 35808613 PMCID: PMC9269058 DOI: 10.3390/polym14132567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 06/21/2022] [Accepted: 06/22/2022] [Indexed: 12/10/2022] Open
Abstract
Recently, hybrid fillers have been widely used to improve the properties of biopolymers. The synergistic effects of the hybrid fillers can have a positive impact on biopolymers, including thermoplastic corn starch film (TPCS). In this communication, we highlight the effectiveness of hybrid fillers in inhibiting the aging process of TPCS. The TPCS, thermoplastic corn starch composite films (TPCS-C), and hybrid thermoplastic corn starch composite film (TPCS-HC) were stored for 3 months to study the effect of hybrid filler on the starch retrogradation. TPCS-C and TPCS-HC were prepared by casting method with 5 wt% of fillers: nanocellulose (NC) and bentonite (BT). The alteration of the mechanical properties, aging behavior, and crystalline structure of the films were analyzed through the tensile test, Fourier transform infrared (FTIR), X-ray diffraction (XRD), differential scanning calorimetry (DSC), and water absorption analysis. The obtained data were correlated to each other to analyze the retrogradation of the TPCS, which is the main factor that contributes to the aging process of the biopolymer. Results signify that incorporating the hybrid filler (NC + BT) in the TPCS/4BT1NC films has effectively prevented retrogradation of the starch molecules after being stored for 3 months. On the contrary, the virgin TPCS film showed the highest degree of retrogradation resulting in a significant decrement in the film’s flexibility. These findings proved the capability of the green hybrid filler in inhibiting the aging of the TPCS.
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19
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Effect of starch initial moisture on thermoplastic starch film properties and its performance as agricultural mulch film. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03150-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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20
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Area MR, Montero B, Rico M, Barral L, Bouza R, López J. Isosorbide plasticized corn starch filled with poly(3-hydroxybutyrate-co-3-hydroxyvalerate) microparticles: Properties and behavior under environmental factors. Int J Biol Macromol 2022; 202:345-353. [PMID: 35032491 DOI: 10.1016/j.ijbiomac.2022.01.032] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 12/21/2021] [Accepted: 01/06/2022] [Indexed: 11/16/2022]
Abstract
In this work, new green and fully biodegradable composites, based on corn starch, plasticized with two different amounts of isosorbide and filled by poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) microparticles, were obtained by melt processing. The analysis of their morphologies, crystallinity, structural interactions and dynamomechanical properties as well as the evaluation of their moisture resistance and biodegradability in soil, were performed in function of the plasticizer and/or microparticle amount. The analysis of morphology, crystallinity and structural interactions showed that the plasticization process was completed under the melting processing conditions used. The microparticles were homogeneously dispersed in the thermoplastic starch matrix without suffering any deformation or breaking during the processing. Biocomposites with adequate storage modulus values were obtained, especially the TPS plasticized with 35% of isosorbide and filled with 5 wt% of PHBV microparticles. The incorporation of PHBV microparticles leads to biocomposites with higher moisture resistance. All the biocomposites were completely biodegraded in soil in a short period of time. The performed study demonstrated that these biocomposites could be used for applications in the packaging industry.
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Affiliation(s)
- Miguel R Area
- Universidade da Coruña, Campus Industrial de Ferrol, Grupo de Polímeros, Departamento de Física y Ciencias de la Tierra, Escuela Politécnica de Ingeniería de Ferrol, 15403, A Coruña, Spain
| | - Belén Montero
- Universidade da Coruña, Campus Industrial de Ferrol, Grupo de Polímeros, Departamento de Física y Ciencias de la Tierra, Escuela Politécnica de Ingeniería de Ferrol, 15403, A Coruña, Spain.
| | - Maite Rico
- Universidade da Coruña, Campus Industrial de Ferrol, Grupo de Polímeros, Departamento de Física y Ciencias de la Tierra, Escuela Politécnica de Ingeniería de Ferrol, 15403, A Coruña, Spain
| | - Luis Barral
- Universidade da Coruña, Campus Industrial de Ferrol, Grupo de Polímeros, Departamento de Física y Ciencias de la Tierra, Escuela Politécnica de Ingeniería de Ferrol, 15403, A Coruña, Spain; Cellular and Molecular Cardiology Research Unit, Institute of Biomedical Research (IDIS-SERGAS), University Clinical Hospital, Santiago de Compostela, Spain
| | - Rebeca Bouza
- Universidade da Coruña, Campus Industrial de Ferrol, Grupo de Polímeros, Departamento de Física y Ciencias de la Tierra, Escuela Politécnica de Ingeniería de Ferrol, 15403, A Coruña, Spain
| | - Joaquín López
- Universidade da Coruña, Campus Industrial de Ferrol, Grupo de Polímeros, Departamento de Física y Ciencias de la Tierra, Escuela Politécnica de Ingeniería de Ferrol, 15403, A Coruña, Spain
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21
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Cabrera Canales ZE, Velazquez G, Gómez Aldapa CA, Fonseca Florido HA, Hernández Hernández E, González Morones P, Méndez Montealvo MG, Rodríguez Marín ML. Preparation and Characterization of Thermoplastics Achira (
Canna indica
L.) Starch by Three Succination Methods. STARCH-STARKE 2022. [DOI: 10.1002/star.202100040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Zaira Esmeralda Cabrera Canales
- CICATA unidad Querétaro Instituto Politécnico Nacional Cerro Blanco 141, Colinas del Cimatario. Santiago de Querétaro, QRO 76090 México
| | - Gonzalo Velazquez
- CICATA unidad Querétaro Instituto Politécnico Nacional Cerro Blanco 141, Colinas del Cimatario. Santiago de Querétaro, QRO 76090 México
| | - Carlos Alberto Gómez Aldapa
- Área Académica de Química Instituto de Ciencias Básicas e Ingeniería Universidad Autónoma del Estado de Hidalgo Ciudad del Conocimiento, Carretera Pachuca – Tulancingo km 4.5, Mineral de la Reforma, Hgo, C.P. 42184 México
| | - Heidi Andrea Fonseca Florido
- Cátedras‐CONACYT
- Centro de Investigación en Química Aplicada Blvd. Enrique Reyna No. 140, San José de los Cerritos, Saltillo, Coah, C.P. 25294 México
| | - Ernesto Hernández Hernández
- Centro de Investigación en Química Aplicada Blvd. Enrique Reyna No. 140, San José de los Cerritos, Saltillo, Coah, C.P. 25294 México
| | - Pablo González Morones
- Centro de Investigación en Química Aplicada Blvd. Enrique Reyna No. 140, San José de los Cerritos, Saltillo, Coah, C.P. 25294 México
| | - Ma. Guadalupe Méndez Montealvo
- CICATA unidad Querétaro Instituto Politécnico Nacional Cerro Blanco 141, Colinas del Cimatario. Santiago de Querétaro, QRO 76090 México
| | - María Luisa Rodríguez Marín
- Área Académica de Química Instituto de Ciencias Básicas e Ingeniería Universidad Autónoma del Estado de Hidalgo Ciudad del Conocimiento, Carretera Pachuca – Tulancingo km 4.5, Mineral de la Reforma, Hgo, C.P. 42184 México
- Cátedras‐CONACYT
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22
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Thermoplastic Starch-Based Composite Reinforced by Conductive Filler Networks: Physical Properties and Electrical Conductivity Changes during Cyclic Deformation. Polymers (Basel) 2021; 13:polym13213819. [PMID: 34771374 PMCID: PMC8587407 DOI: 10.3390/polym13213819] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 10/29/2021] [Accepted: 11/01/2021] [Indexed: 12/18/2022] Open
Abstract
Conductive polymer composites (CPC) from renewable resources exhibit many interesting characteristics due to their biodegradability and conductivity changes under mechanical, thermal, chemical, or electrical stress. This study is focused on investigating the physical properties of electroconductive thermoplastic starch (TPS)–based composites and changes in electroconductive paths during cyclic deformation. TPS–based composites filled with various carbon black (CB) contents were prepared through melt processing. The electrical conductivity and physicochemical properties of TPS–CB composites, including mechanical properties and rheological behavior, were evaluated. With increasing CB content, the tensile strength and Young’s modulus were found to increase substantially. We found a percolation threshold for the CB loading of approximately 5.5 wt% based on the rheology and electrical conductivity. To observe the changing structure of the conductive CB paths during cyclic deformation, both the electrical conductivity and mechanical properties were recorded in parallel using online measurements. Moreover, the instant electrical conductivity measured online during mechanical deformation of the materials was taken as the parameter indirectly describing the structure of the conductive CB network. The electrical conductivity was found to increase during five runs of repeated cyclic mechanical deformations to constant deformation below strain at break, indicating good recovery of conductive paths and their new formation.
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23
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Ploypetchara T, Gohtani S. Effect of rice starch film blended with sugar (trehalose/allose) and oil (canola oil/coconut oil) on the physical properties and their interaction (Part II). J FOOD PROCESS PRES 2021. [DOI: 10.1111/jfpp.15795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Thongkorn Ploypetchara
- Expert Center of Innovative Health Food Thailand Institute of Scientific and Technological Research 35 Mu 3 Technopolis Pathum Thani Thailand
| | - Shoichi Gohtani
- Department of Applied Biological Science Faculty of Agriculture Kagawa University Kita‐gun, Kagawa Japan
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24
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Montilla‐Buitrago CE, Gómez‐López RA, Solanilla‐Duque JF, Serna‐Cock L, Villada‐Castillo HS. Effect of Plasticizers on Properties, Retrogradation, and Processing of Extrusion‐Obtained Thermoplastic Starch: A Review. STARCH-STARKE 2021. [DOI: 10.1002/star.202100060] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Camilo E. Montilla‐Buitrago
- Research Group in Science and Technology of Agroindustrial Interest – CYTBIA, Department of Agroindustrial Engineering, Faculty of Agrarian Sciences Universidad del Cauca Cauca 190002 Colombia
| | - Rudy A. Gómez‐López
- Research Group in Science and Technology of Agroindustrial Interest – CYTBIA, Department of Agroindustrial Engineering, Faculty of Agrarian Sciences Universidad del Cauca Cauca 190002 Colombia
- Faculty of Engineering and Administration Universidad Nacional de Colombia Sede Palmira Valle del Cauca 763533 Colombia
| | - José F. Solanilla‐Duque
- Research Group in Science and Technology of Agroindustrial Interest – CYTBIA, Department of Agroindustrial Engineering, Faculty of Agrarian Sciences Universidad del Cauca Cauca 190002 Colombia
| | - Liliana Serna‐Cock
- Faculty of Engineering and Administration Universidad Nacional de Colombia Sede Palmira Valle del Cauca 763533 Colombia
| | - Héctor S. Villada‐Castillo
- Research Group in Science and Technology of Agroindustrial Interest – CYTBIA, Department of Agroindustrial Engineering, Faculty of Agrarian Sciences Universidad del Cauca Cauca 190002 Colombia
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Lisitsyn A, Semenova A, Nasonova V, Polishchuk E, Revutskaya N, Kozyrev I, Kotenkova E. Approaches in Animal Proteins and Natural Polysaccharides Application for Food Packaging: Edible Film Production and Quality Estimation. Polymers (Basel) 2021; 13:1592. [PMID: 34063360 PMCID: PMC8156411 DOI: 10.3390/polym13101592] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 05/12/2021] [Accepted: 05/13/2021] [Indexed: 12/13/2022] Open
Abstract
Natural biopolymers are an interesting resource for edible films production, as they are environmentally friendly packaging materials. The possibilities of the application of main animal proteins and natural polysaccharides are considered in the review, including the sources, structure, and limitations of usage. The main ways for overcoming the limitations caused by the physico-chemical properties of biopolymers are also discussed, including composites approaches, plasticizers, and the addition of crosslinking agents. Approaches for the production of biopolymer-based films and coatings are classified according to wet and dried processes and considered depending on biopolymer types. The methods for mechanical, physico-chemical, hydration, and uniformity estimation of edible films are reviewed.
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Affiliation(s)
- Andrey Lisitsyn
- Department of Scientific, Applied and Technological Developments, V. M. Gorbatov Federal Research Center for Food Systems of RAS, Talalikhina st., 26, 109316 Moscow, Russia; (A.L.); (A.S.); (V.N.); (N.R.); (I.K.)
| | - Anastasia Semenova
- Department of Scientific, Applied and Technological Developments, V. M. Gorbatov Federal Research Center for Food Systems of RAS, Talalikhina st., 26, 109316 Moscow, Russia; (A.L.); (A.S.); (V.N.); (N.R.); (I.K.)
| | - Viktoria Nasonova
- Department of Scientific, Applied and Technological Developments, V. M. Gorbatov Federal Research Center for Food Systems of RAS, Talalikhina st., 26, 109316 Moscow, Russia; (A.L.); (A.S.); (V.N.); (N.R.); (I.K.)
| | - Ekaterina Polishchuk
- Experimental Clinic and Research Laboratory for Bioactive Substances of Animal Origin, V. M. Gorbatov Federal Research Center for Food Systems of RAS, Talalikhina st., 26, 109316 Moscow, Russia;
| | - Natalia Revutskaya
- Department of Scientific, Applied and Technological Developments, V. M. Gorbatov Federal Research Center for Food Systems of RAS, Talalikhina st., 26, 109316 Moscow, Russia; (A.L.); (A.S.); (V.N.); (N.R.); (I.K.)
| | - Ivan Kozyrev
- Department of Scientific, Applied and Technological Developments, V. M. Gorbatov Federal Research Center for Food Systems of RAS, Talalikhina st., 26, 109316 Moscow, Russia; (A.L.); (A.S.); (V.N.); (N.R.); (I.K.)
| | - Elena Kotenkova
- Experimental Clinic and Research Laboratory for Bioactive Substances of Animal Origin, V. M. Gorbatov Federal Research Center for Food Systems of RAS, Talalikhina st., 26, 109316 Moscow, Russia;
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Effect of different surface properties of nanosilica on retrogradation behavior and structures of thermoplastic cassava starch. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02507-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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27
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Ceballos RL, von Bilderling C, Guz L, Bernal C, Famá L. Effect of greenly synthetized silver nanoparticles on the properties of active starch films obtained by extrusion and compression molding. Carbohydr Polym 2021; 261:117871. [PMID: 33766358 DOI: 10.1016/j.carbpol.2021.117871] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 02/20/2021] [Accepted: 02/22/2021] [Indexed: 12/13/2022]
Abstract
Replacing packaging plastics with biodegradable active materials is an emerging concern. In this context, thermoplastic starch (TPS) films and nanocomposites containing different concentrations of silver nanoparticles synthetized with starch and yerba mate (TPS-AgNP1: 0.006 wt.% and TPS-AgNP2: 0.015 wt.%) were developed by extrusion and compression molding. Spherical AgNP of 20-130 nm were obtained after the green synthesis and excellent adhesion between AgNP and the matrix was observed. Consequently, both composites exhibited higher stiffness and tensile strength values than TPS, indicating a reinforcing effect of AgNP. TPS-AgNP1 showed the highest strain at break and toughness values, and TPS-AgNP2 presented the lowest moisture content and ability to delay E. coli growth. Additionally, all materials disintegrated after 4 weeks of burial and resulted thermally stable up to 240 °C. This investigation provides a convenient and inexpensive way to develop starch-based nanocomposites with improved properties which appear to be promising as active packaging materials.
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Affiliation(s)
- Rocío L Ceballos
- Laboratorio de Polímeros y Materiales Compuestos (LP&MC), Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires e Instituto de Física de Buenos Aires (IFIBA-CONICET), Intendente Güiraldes 2160 (C1428EGA), Pabellón 1, Ciudad Universitaria, Buenos Aires, Argentina.
| | - Catalina von Bilderling
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA, CONICET-UNLP), Diagonal 113, Casco Urbano, B1900, La Plata, Provincia de Buenos Aires, Argentina; Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Intendente Güiraldes 2160 (C1428EGA), Pabellón 1, Ciudad Universitaria, Buenos Aires, Argentina.
| | - Lucas Guz
- Laboratorio de Polímeros y Materiales Compuestos (LP&MC), Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires e Instituto de Física de Buenos Aires (IFIBA-CONICET), Intendente Güiraldes 2160 (C1428EGA), Pabellón 1, Ciudad Universitaria, Buenos Aires, Argentina; Instituto de Investigación e Ingeniería Ambiental (IIIA), CONICET, Universidad Nacional de San Martín, 25 de Mayo y Francia (1650), San Martín, Provincia de Buenos Aires, Argentina.
| | - Celina Bernal
- Instituto de Tecnología en Polímeros y Nanotecnología (ITPN, UBA-CONICET), Facultad de Ingeniería, Universidad de Buenos Aires, Av. Las Heras 2214 (1127), Buenos Aires, Argentina.
| | - Lucía Famá
- Laboratorio de Polímeros y Materiales Compuestos (LP&MC), Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires e Instituto de Física de Buenos Aires (IFIBA-CONICET), Intendente Güiraldes 2160 (C1428EGA), Pabellón 1, Ciudad Universitaria, Buenos Aires, Argentina.
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Javidi Z, Nazockdast H, Ghasemi I. Unraveling the Effect of Citric Acid on Microstructure, Rheology, and Structural Recovery of Thermoplastic Potato Starch. STARCH-STARKE 2021. [DOI: 10.1002/star.202000193] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Zeinab Javidi
- Department of Polymer Engineering and Color Technology Amirkabir University of Technology Tehran Iran
| | - Hossein Nazockdast
- Department of Polymer Engineering and Color Technology Amirkabir University of Technology Tehran Iran
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Xu J, Chen Y, Tian Y, Yang Z, Zhao Z, Du W, Zhang X. Effect of ionic liquid 1-buyl-3-methylimidazolium halide on the structure and tensile property of PBS/corn starch blends. Int J Biol Macromol 2021; 172:170-177. [PMID: 33450339 DOI: 10.1016/j.ijbiomac.2021.01.062] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 01/10/2021] [Accepted: 01/11/2021] [Indexed: 01/08/2023]
Abstract
As a promising biodegradable resin, poly (butylene succinate) (PBS) is often blended with starch to reduce the cost. In this paper, 1-buyl-3-methylimidazolium halide pre-plasticized corn starch (CS) was blended with PBS to prepare PBS/corn starch blend material modified by ionic liquid (PBS/CS-IL). Ionic liquid (IL) acted as plasticizer and compatibilizer, and the effects of 1-butyl-3-methylimidazolium halide with different halogen anion on PBS/Starch blends were explored. The effects of IL on the structure and tensile property of PBS/Starch blends were evaluated by FTIR, SEM, DSC, TGA and XRD, respectively. Test results showed that the addition of IL significantly reduced the crystallinity of PBS/Starch blends, and the size of starch particles in the PBS matrix was also effectively reduced. IL also acted as a compatibilizer of starch and PBS, and induced the morphology of the blends to change from "sea-island" structure to homogeneous phase. The results of the tensile test showed that compared with the PBS/Starch blend without IL, the elongation at break of PBS/CS-IL increased from 22% to 93%. This study provided a simple and feasible method for the preparation of low-cost PBS bio-composite materials, and provided theoretical support for future industrial production.
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Affiliation(s)
- Jin Xu
- State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China; Polymer Research Institute, Sichuan University, Chengdu 610065, China
| | - Yanfei Chen
- State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China; Polymer Research Institute, Sichuan University, Chengdu 610065, China
| | - Yuanfang Tian
- State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China; Polymer Research Institute, Sichuan University, Chengdu 610065, China
| | - Zhaojie Yang
- State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China; Polymer Research Institute, Sichuan University, Chengdu 610065, China
| | - Zhixin Zhao
- State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China; Polymer Research Institute, Sichuan University, Chengdu 610065, China
| | - Wenhao Du
- State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China; Polymer Research Institute, Sichuan University, Chengdu 610065, China
| | - Xi Zhang
- State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China; Polymer Research Institute, Sichuan University, Chengdu 610065, China.
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Gelatinized and nongelatinized starch/pp blends: effect of starch source and carboxylic and incorporation. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-020-02372-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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31
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Properties and behavior under environmental factors of isosorbide-plasticized starch reinforced with microcrystalline cellulose biocomposites. Int J Biol Macromol 2020; 164:2028-2037. [DOI: 10.1016/j.ijbiomac.2020.08.075] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 08/05/2020] [Accepted: 08/08/2020] [Indexed: 11/20/2022]
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32
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Altayan MM, Al Darouich T, Karabet F. Thermoplastic starch from corn and wheat: a comparative study based on amylose content. Polym Bull (Berl) 2020. [DOI: 10.1007/s00289-020-03262-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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33
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Prapruddivongs C, Wongpreedee T. Use of eggshell powder as a potential hydrolytic retardant for citric acid-filled thermoplastic starch. POWDER TECHNOL 2020. [DOI: 10.1016/j.powtec.2020.05.076] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Ploypetchara T, Gohtani S. Change in characteristics of film based on rice starch blended with sucrose, maltose, and trehalose after storage. J Food Sci 2020; 85:1470-1478. [PMID: 32282075 DOI: 10.1111/1750-3841.15021] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 11/08/2019] [Accepted: 11/26/2019] [Indexed: 01/05/2023]
Abstract
The characteristics of rice starch film blended with sucrose, maltose, and trehalose at concentrations of 0%, 10%, 20%, or 30% (w/w of the starch weight) were investigated. Relative crystallinity (RC) of the rice starch film as determined by X-ray increased with increasing sucrose concentration and the RC tended to decrease with an increasing concentration of maltose and trehalose. RC was inhibited by adding sugar in the order of trehalose, maltose, and sucrose after 28 days storage. The rice starch film with 30% added sugar showed a homogeneous matrix and a lower frequency chemical shift of the proton OH group as determined on the day of preparation; however, the film with 30% added maltose cracked after 28 days storage. Adding sugar as a plasticizer affected the properties of the rice starch film by concentration and type of sugar because of the hydroxyl groups of the sugar. PRACTICAL APPLICATION: Disaccharides, such as sucrose, maltose, and trehalose, could be used as a plasticizer in a rice starch film system. The sugar conformation might be one factor for selecting the sugar to use for starch film system. Trehalose might improve film properties by inhibiting recrystallization after storage.
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Affiliation(s)
- Thongkorn Ploypetchara
- Dept. of Applied Biological Science (Food Science), The United Graduate School of Agricultural Sciences, Ehime Univ., 2393 Ikenobe, Miki-cho, Kita-gun, Kagawa, 761-0795, Japan
| | - Shoichi Gohtani
- Dept. of Applied Biological Science, Faculty of Agriculture, Kagawa Univ., 2393 Ikenobe, Miki-cho, Kita-gun, Kagawa, 761-0795, Japan
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35
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Pavon C, Aldas M, López-Martínez J, Ferrándiz S. New Materials for 3D-Printing Based on Polycaprolactone with Gum Rosin and Beeswax as Additives. Polymers (Basel) 2020; 12:polym12020334. [PMID: 32033300 PMCID: PMC7077448 DOI: 10.3390/polym12020334] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 01/17/2020] [Accepted: 01/28/2020] [Indexed: 12/16/2022] Open
Abstract
In this work, different materials for three-dimensional (3D)-printing were studied, which based on polycaprolactone with two natural additives, gum rosin, and beeswax. During the 3D-printing process, the bed and extrusion temperatures of each formulation were established. After, the obtained materials were characterized by mechanical, thermal, and structural properties. The results showed that the formulation with containing polycaprolactone with a mixture of gum rosin and beeswax as additive behaved better during the 3D-printing process. Moreover, the miscibility and compatibility between the additives and the matrix were concluded through the thermal assessment. The mechanical characterization established that the addition of the mixture of gum rosin and beeswax provides greater tensile strength than those additives separately, facilitating 3D-printing. In contrast, the addition of beeswax increased the ductility of the material, which makes the 3D-printing processing difficult. Despite the fact that both natural additives had a plasticizing effect, the formulations containing gum rosin showed greater elongation at break. Finally, Fourier-Transform Infrared Spectroscopy assessment deduced that polycaprolactone interacts with the functional groups of the additives.
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Affiliation(s)
- Cristina Pavon
- Instituto de Tecnología de Materiales, Departamento de Ingeniería Mecánica y de Materiales, Universitat Politècnica de València, Plaza Ferrándiz y Carbonell s/n, 03801 Alcoi, Spain; (J.L.-M.); (S.F.)
- Correspondence: (C.P.); (M.A.); Tel.: +34-644-343-735 (C.P.); +593-999-736-444 (M.A.)
| | - Miguel Aldas
- Instituto de Tecnología de Materiales, Departamento de Ingeniería Mecánica y de Materiales, Universitat Politècnica de València, Plaza Ferrándiz y Carbonell s/n, 03801 Alcoi, Spain; (J.L.-M.); (S.F.)
- Departamento de Ciencia de Alimentos y Biotecnología, Facultad de Ingeniería Química y Agroindustria, Escuela Politécnica Nacional, 170517 Quito, Ecuador
- Correspondence: (C.P.); (M.A.); Tel.: +34-644-343-735 (C.P.); +593-999-736-444 (M.A.)
| | - Juan López-Martínez
- Instituto de Tecnología de Materiales, Departamento de Ingeniería Mecánica y de Materiales, Universitat Politècnica de València, Plaza Ferrándiz y Carbonell s/n, 03801 Alcoi, Spain; (J.L.-M.); (S.F.)
| | - Santiago Ferrándiz
- Instituto de Tecnología de Materiales, Departamento de Ingeniería Mecánica y de Materiales, Universitat Politècnica de València, Plaza Ferrándiz y Carbonell s/n, 03801 Alcoi, Spain; (J.L.-M.); (S.F.)
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36
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Baran A, Vrábel P, Kovaľaková M, Hutníková M, Fričová O, Olčák D. Effects of sorbitol and formamide plasticizers on molecular motion in corn starch studied using NMR and DMTA. J Appl Polym Sci 2020. [DOI: 10.1002/app.48964] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- A. Baran
- Department of Physics, Faculty of Electrical Engineering and InformaticsTechnical University of Košice Park Komenského 2 042 00 Košice Slovakia
| | - P. Vrábel
- Department of Physics, Faculty of Electrical Engineering and InformaticsTechnical University of Košice Park Komenského 2 042 00 Košice Slovakia
| | - M. Kovaľaková
- Department of Physics, Faculty of Electrical Engineering and InformaticsTechnical University of Košice Park Komenského 2 042 00 Košice Slovakia
| | - M. Hutníková
- Department of Physics, Faculty of Electrical Engineering and InformaticsTechnical University of Košice Park Komenského 2 042 00 Košice Slovakia
| | - O. Fričová
- Department of Physics, Faculty of Electrical Engineering and InformaticsTechnical University of Košice Park Komenského 2 042 00 Košice Slovakia
| | - D. Olčák
- Department of Physics, Faculty of Electrical Engineering and InformaticsTechnical University of Košice Park Komenského 2 042 00 Košice Slovakia
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37
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Fekete E, Bella É, Csiszár E, Móczó J. Improving physical properties and retrogradation of thermoplastic starch by incorporating agar. Int J Biol Macromol 2019; 136:1026-1033. [DOI: 10.1016/j.ijbiomac.2019.06.109] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 05/22/2019] [Accepted: 06/15/2019] [Indexed: 11/24/2022]
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Zdanowicz M, Staciwa P, Jędrzejewski R, Spychaj T. Sugar Alcohol-Based Deep Eutectic Solvents as Potato Starch Plasticizers. Polymers (Basel) 2019; 11:polym11091385. [PMID: 31450743 PMCID: PMC6780061 DOI: 10.3390/polym11091385] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Revised: 08/16/2019] [Accepted: 08/21/2019] [Indexed: 11/16/2022] Open
Abstract
The aim of this work was to prepare sugar alcohol-based deep eutectic solvents (DES) and test them as starch plasticizers. Thermoplastic starch (TPS) films were obtained via a simple and convenient thermocompression method. Influence of starch/DES premixtures conditioning (preheating, storage time) on TPS properties was investigated. TPS/sorbitol (S)-based DES exhibited similar tensile strength (TS) (8.6 MPa) but twice higher elongation at the break (ε) (33%) when compared with TPS plasticized only with S. Extra treatment, i.e., heating or prolonged storage time, facilitated starch/DES plasticizing. Starch with selected DES was also extruded and the influence of preconditioning and extrusion rotational speed were subsequently studied on thermocompressed films. Extrusion at 100 rpm led to films with TS up to ca. 10 MPa and ε up to 52%. Some differences in film samples morphology obtained via two processing methods were observed. X-ray diffractograms revealed that extruded samples exhibited a V-type peak at 18.2°, with intensity depending on plasticizer total molecular size. Applied techniques (mechanical tests, XRD, Dynamic Mechanical Analysis (DMA), FTIR-Attenuated Total Reflection (ATR), and moisture sorption) indicated that S-based DES forms stronger interactions with starch than glycerol (G) only used as conventional plasticizer, thus leading to better mechanical properties and inhibited tendency to starch recrystallization (studied up to one year).
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Affiliation(s)
- Magdalena Zdanowicz
- Polymer Institute, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology Szczecin, Ul. Pulaskiego 10, 70-322 Szczecin, Poland.
| | - Piotr Staciwa
- Polymer Institute, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology Szczecin, Ul. Pulaskiego 10, 70-322 Szczecin, Poland
| | - Roman Jędrzejewski
- Institute of Materials Engineering, Faculty of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology Szczecin, Al. Piastow 10, 70-310 Szczecin, Poland
| | - Tadeusz Spychaj
- Polymer Institute, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology Szczecin, Ul. Pulaskiego 10, 70-322 Szczecin, Poland
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Sun X, Jia XJ, Li FY, Li JF, Li JY, Zhang CW, Chen S, Cui JF, Sun KQ, Zhang SG. Effect of poly-methyltriethoxysilane on the waterproof property of starch/fiber composites with open cell structures. RSC Adv 2019; 9:19508-19517. [PMID: 35519392 PMCID: PMC9065402 DOI: 10.1039/c9ra03221e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 06/04/2019] [Indexed: 11/21/2022] Open
Abstract
Novel starch/fiber composites with open cell structures were proposed through thermo-cavity molding. To overcome the disadvantage of the water sensitivity of the resulting composites, poly-methyltriethoxysilane (PTS) was added as a waterproofing agent. The results showed that the addition of PTS improved the waterproof property of the composites. The composites with 15 g PTS (PTS-15) exhibited an optimal waterproof property. The water contact angle and drop absorption of the PTS-15 composites improved by 59.9% and 223.5%, respectively, compared with the values for those without PTS. Moreover, the addition of PTS could effectively prevent the degradation of the mechanical properties of the composites after water absorption. The rate of tensile property degradation for the PTS-15 composites reached 5.3%, whereas that for the PTS-0 composites totaled 56.6%. The chemical bonds and micro-structure of the composites were investigated to reveal the inherent mechanism of property changes. Fourier transform infrared spectra revealed the formation of new hydrogen bonds between starch and PTS. Hydrophobic groups, including Si-O-Si, Si-C, and Si-OH, were found in the resulting composites, thereby explaining the waterproof property changes. Scanning electron microscopy images showed that the open cell structure of the composites initially became denser and then loosened with the increase in the PTS content, resulting in the initial enhancement and the subsequent weakening of their mechanical properties.
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Affiliation(s)
- Xu Sun
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture (Ministry of Education), School of Mechanical Engineering, Shandong University Jinan 250061 China .,National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University Jinan 250061 China
| | - Xiu-Jie Jia
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture (Ministry of Education), School of Mechanical Engineering, Shandong University Jinan 250061 China .,National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University Jinan 250061 China
| | - Fang-Yi Li
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture (Ministry of Education), School of Mechanical Engineering, Shandong University Jinan 250061 China .,National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University Jinan 250061 China
| | - Jian-Feng Li
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture (Ministry of Education), School of Mechanical Engineering, Shandong University Jinan 250061 China .,National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University Jinan 250061 China
| | - Jian-Yong Li
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture (Ministry of Education), School of Mechanical Engineering, Shandong University Jinan 250061 China .,National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University Jinan 250061 China
| | - Chuan-Wei Zhang
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture (Ministry of Education), School of Mechanical Engineering, Shandong University Jinan 250061 China .,National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University Jinan 250061 China
| | - Shuai Chen
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture (Ministry of Education), School of Mechanical Engineering, Shandong University Jinan 250061 China .,National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University Jinan 250061 China
| | - Jin-Feng Cui
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture (Ministry of Education), School of Mechanical Engineering, Shandong University Jinan 250061 China .,National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University Jinan 250061 China
| | - Kai-Qiang Sun
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture (Ministry of Education), School of Mechanical Engineering, Shandong University Jinan 250061 China .,National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University Jinan 250061 China
| | - Shan-Guo Zhang
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture (Ministry of Education), School of Mechanical Engineering, Shandong University Jinan 250061 China .,National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University Jinan 250061 China
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Cui JF, Li FY, Li JY, Li JF, Zhang CW, Chen S, Sun X. Effects of magnesium hydroxide on the properties of starch/plant fiber composites with foam structure. RSC Adv 2019; 9:17405-17413. [PMID: 35519863 PMCID: PMC9064602 DOI: 10.1039/c9ra01992h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 05/28/2019] [Indexed: 11/21/2022] Open
Abstract
In this study, magnesium hydroxide (MH) flame-retarded starch/plant fiber composites containing various MH contents (0%, 5%, 15%, 15%) were prepared and named as TF-MH0, TF-MH5, TF-MH10, TF-MH15. Thermal degradation, flame retardancy, mechanical and microscopic characteristics were discussed. The reduction in the maximum thermal degradation rate revealed that the addition of MH provided improvement in the thermal stability of the composite. The horizontal burning test and the limiting oxygen index analysis suggested enhancement in flame retardancy with increasing MH content. Moreover, the density of composites initially decreased and then increased as the MH content increased. The tensile strength was positively correlated with the density, whereas the cushioning performance was negatively correlated with the density. Microscopic analysis showed that there was an interfacial interaction between MH and thermoplastic starch, which not only improves the thermal stability, but also promotes bubble nucleation as a nucleating agent. The cells of TF-MH10 were uniform and dense, thus TF-MH10 had the best buffering performance. Furthermore, the cell structure of TF-MH15 was short in diameter, small in number, and large in skeleton thickness; therefore, TF-MH15 had the highest tensile strength.
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Affiliation(s)
- Jin-Feng Cui
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture (Ministry of Education), School of Mechanical Engineering, Shandong University Jinan 250061 China
- National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University Jinan 250061 China
| | - Fang-Yi Li
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture (Ministry of Education), School of Mechanical Engineering, Shandong University Jinan 250061 China
- National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University Jinan 250061 China
| | - Jian-Yong Li
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture (Ministry of Education), School of Mechanical Engineering, Shandong University Jinan 250061 China
- National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University Jinan 250061 China
| | - Jian-Feng Li
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture (Ministry of Education), School of Mechanical Engineering, Shandong University Jinan 250061 China
- National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University Jinan 250061 China
| | - Chuan-Wei Zhang
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture (Ministry of Education), School of Mechanical Engineering, Shandong University Jinan 250061 China
- National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University Jinan 250061 China
| | - Shuai Chen
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture (Ministry of Education), School of Mechanical Engineering, Shandong University Jinan 250061 China
- National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University Jinan 250061 China
| | - Xu Sun
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture (Ministry of Education), School of Mechanical Engineering, Shandong University Jinan 250061 China
- National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University Jinan 250061 China
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Zdanowicz M, Jędrzejewski R, Pilawka R. Deep eutectic solvents as simultaneous plasticizing and crosslinking agents for starch. Int J Biol Macromol 2019; 129:1040-1046. [DOI: 10.1016/j.ijbiomac.2019.02.103] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Revised: 01/29/2019] [Accepted: 02/16/2019] [Indexed: 11/16/2022]
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Mohanty F, Swain SK. Nano silver embedded starch hybrid graphene oxide sandwiched poly(ethylmethacrylate) for packaging application. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.nanoso.2019.100300] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Merino D, Gutiérrez TJ, Alvarez VA. Structural and Thermal Properties of Agricultural Mulch Films Based on Native and Oxidized Corn Starch Nanocomposites. STARCH-STARKE 2019. [DOI: 10.1002/star.201800341] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Danila Merino
- Grupo de Materiales Compuestos Termoplásticos (CoMP)Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA)Facultad de IngenieríaUniversidad Nacional de Mar del Plata (UNMdP) y Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)Av. Colón 10850B7608FLCMar del PlataArgentina
| | - Tomy J. Gutiérrez
- Grupo de Materiales Compuestos Termoplásticos (CoMP)Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA)Facultad de IngenieríaUniversidad Nacional de Mar del Plata (UNMdP) y Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)Av. Colón 10850B7608FLCMar del PlataArgentina
| | - Vera A. Alvarez
- Grupo de Materiales Compuestos Termoplásticos (CoMP)Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA)Facultad de IngenieríaUniversidad Nacional de Mar del Plata (UNMdP) y Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)Av. Colón 10850B7608FLCMar del PlataArgentina
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Garalde RA, Thipmanee R, Jariyasakoolroj P, Sane A. The effects of blend ratio and storage time on thermoplastic starch/poly(butylene adipate- co-terephthalate) films. Heliyon 2019; 5:e01251. [PMID: 31016252 PMCID: PMC6475639 DOI: 10.1016/j.heliyon.2019.e01251] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Revised: 02/10/2019] [Accepted: 02/14/2019] [Indexed: 10/27/2022] Open
Abstract
The objective of this work was to investigate blend ratio and storage time effects on the morphological, mechanical, and thermal properties of thermoplastic starch/poly(butylene adipate-co-terephthalate) (TPS/PBAT) films. TPS was prepared from plasticized cassava starch using a twin-screw extruder. TPS was subsequently melt-blended with PBAT with varied weight ratios (i.e., 20/80, 40/60 and 60/40) and blown to form TPS/PBAT films. It was found that increasing the TPS/PBAT ratio to 40/60 led to improved distributions of polymeric components and increased PBAT crystallization temperatures while reducing TPS melting transitions and tensile properties of TPS/PBAT films. After three months of storage at 30 °C, the tensile strength and secant modulus at 2% strain of TPS/PBAT films increased due to recrystallization of both TPS and PBAT. Blend ratios were the primary determinant for changes in TPS/PBAT film elongation at break with this storage time. Elongation at break decreased at low TPS:PBAT ratios (i.e., 20/80) and increased at high blend ratios (i.e., 60/40). The recrystallization of both TPS and PBAT components were observed from XRD and DSC analyses. Results obtained from both techniques confirmed the formation of additional crystalline structures of individual components during storage. The recrystallization phenomena also affected thermal transition temperatures of blend components. The crystallization temperature of PBAT-rich phase increased as starch could act as nucleating sites for PBAT. Using DMA, the tan δ curve of TPS/PBAT film exhibited two sharp individual peaks corresponding to the glass transitions of PBAT-rich and starch-rich phases. The tan δ of TPS-rich phase shifted to higher temperature due to recrystallization of TPS-rich phase.
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Affiliation(s)
- Ray Anne Garalde
- Department of Packaging and Materials Technology, Faculty of Agro-Industry, Kasetsart University, Bangkok 10900, Thailand
| | - Ranumas Thipmanee
- Department of Packaging and Materials Technology, Faculty of Agro-Industry, Kasetsart University, Bangkok 10900, Thailand.,Center for Advanced Studies for Agriculture and Food, KU Institute for Advanced Studies (CASAF, NRU-KU, Thailand), Kasetsart University, Bangkok 10900, Thailand
| | - Piyawanee Jariyasakoolroj
- Department of Packaging and Materials Technology, Faculty of Agro-Industry, Kasetsart University, Bangkok 10900, Thailand.,Center for Advanced Studies for Agriculture and Food, KU Institute for Advanced Studies (CASAF, NRU-KU, Thailand), Kasetsart University, Bangkok 10900, Thailand
| | - Amporn Sane
- Department of Packaging and Materials Technology, Faculty of Agro-Industry, Kasetsart University, Bangkok 10900, Thailand.,Center for Advanced Studies for Agriculture and Food, KU Institute for Advanced Studies (CASAF, NRU-KU, Thailand), Kasetsart University, Bangkok 10900, Thailand
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Chueangchayaphan N, Ting KA, Yusoff M, Chueangchayaphan W. Influence of Al2O3 particle size on properties of thermoplastic starch–TiO2–Al2O3 composites. Polym Bull (Berl) 2019. [DOI: 10.1007/s00289-019-02688-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Lendvai L, Sajó I, Karger-Kocsis J. Effect of Storage Time on the Structure and Mechanical Properties of Starch/Bentonite Nanocomposites. STARCH-STARKE 2018. [DOI: 10.1002/star.201800123] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- László Lendvai
- Department of Polymer Engineering; Faculty of Mechanical Engineering; Budapest University of Technology and Economics; Műegyetem rkp. 3., H-1111 Budapest Hungary
- Department of Materials Science and Technology; Széchenyi István University; Egyetem tér 1., H-9026 Győr Hungary
| | - István Sajó
- Szentágothai Research Centre; University of Pécs; Ifjúság útja 20., H-7624 Pécs Hungary
| | - József Karger-Kocsis
- Department of Polymer Engineering; Faculty of Mechanical Engineering; Budapest University of Technology and Economics; Műegyetem rkp. 3., H-1111 Budapest Hungary
- MTA-BME Research Group for Composite Science and Technology; Műegyetem rkp. 3., H-1111 Budapest Hungary
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Effect of hyperbranched poly(trimellitic glyceride) with different molecular weight on starch plasticization and compatibility with polyester. Carbohydr Polym 2018; 195:107-113. [DOI: 10.1016/j.carbpol.2018.04.080] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2017] [Revised: 04/19/2018] [Accepted: 04/21/2018] [Indexed: 11/18/2022]
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Zhang K, Zhang K, Cheng F, Lin Y, Zhou M, Zhu P. Aging properties and hydrophilicity of maize starch plasticized by hyperbranched poly(citrate glyceride). J Appl Polym Sci 2018. [DOI: 10.1002/app.46899] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kang Zhang
- Textile Institute; Sichuan University; Chengdu 610065 China
| | - Kairui Zhang
- Textile Institute; Sichuan University; Chengdu 610065 China
| | - Fei Cheng
- Textile Institute; Sichuan University; Chengdu 610065 China
| | - Yi Lin
- Textile Institute; Sichuan University; Chengdu 610065 China
| | - Mi Zhou
- Textile Institute; Sichuan University; Chengdu 610065 China
| | - Puxin Zhu
- Textile Institute; Sichuan University; Chengdu 610065 China
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A new biodegradable sisal fiber-starch packing composite with nest structure. Carbohydr Polym 2018; 189:56-64. [PMID: 29580426 DOI: 10.1016/j.carbpol.2018.01.063] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2017] [Revised: 01/06/2018] [Accepted: 01/20/2018] [Indexed: 11/22/2022]
Abstract
A new completely biodegradable sisal fiber-starch packing composite was proposed. The effects of fiber content and alkaline treatment on the cushioning property of the composites were studied from energy absorption efficiency, cellular microstructure and compatibility between fiber and starch. With increasing fiber content, the nest structure of composites becomes dense first and then loosens, resulting in initial enhancement and subsequent weakening of the cushioning property of the composites. The composite with 4:13 mass ratio of fiber and thermoplastic starch (TPS) exhibit the optimal cushioning property. Alkaline treatment increases the compatibility between sisal fiber and TPS, promotes the formation of dense nest structure, thereby enhances the cushioning property of the composites. After biodegradability tests for 28 days, the weight loss of the composites was 62.36%. It's found that the composites are a promising replacement for expandable polystyrene (EPS) as packing material, especially under large compression load (0.7-6 MPa).
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