1
|
Cheng HN, Asakura T, Suganuma K, Lagaron JM, Melendez-Rodriguez B, Biswas A. NMR Analyses and Statistical Modeling of Biobased Polymer Microstructures-A Selected Review. Polymers (Basel) 2024; 16:620. [PMID: 38475303 DOI: 10.3390/polym16050620] [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: 01/13/2024] [Revised: 02/20/2024] [Accepted: 02/21/2024] [Indexed: 03/14/2024] Open
Abstract
NMR analysis combined with statistical modeling offers a useful approach to investigate the microstructures of polymers. This article provides a selective review of the developments in both the NMR analysis of biobased polymers and the statistical models that can be used to characterize these materials. The information obtained from NMR and statistical models can provide insights into the microstructure and stereochemistry of appropriate biobased polymers and establish a systematic approach to their analysis. In suitable cases, the analysis can help optimize the synthetic procedures and facilitate the development of new or modified polymeric materials for various applications. Examples are given of the studies of poly(hydroxyalkanoates), poly(lactic acid), and selected polysaccharides, e.g., alginate, pectin, and chitosan. This article may serve as both a reference and a guide for future workers interested in the NMR sequence analysis of biobased materials.
Collapse
Affiliation(s)
- Huai N Cheng
- USDA Agricultural Research Service, Southern Regional Research Center, New Orleans, LA 70124, USA
| | - Tetsuo Asakura
- Department of Biotechnology, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan
| | - Koto Suganuma
- Material Analysis Research Center, Teijin Ltd., Hino, Tokyo 191-8512, Japan
| | - Jose M Lagaron
- Novel Materials and Nanotechnology Group, IATA, CSIC, Av. Agustín Escardino 7, 46980 Paterna, Valencia, Spain
| | - Beatriz Melendez-Rodriguez
- Novel Materials and Nanotechnology Group, IATA, CSIC, Av. Agustín Escardino 7, 46980 Paterna, Valencia, Spain
| | - Atanu Biswas
- USDA Agricultural Research Service, National Center for Agricultural Utilization Research, Peoria, IL 61604, USA
| |
Collapse
|
2
|
Li Y, Wang C, Deng X, Cai R, Cao L, Cao C, Zheng L, Zhao P, Huang Q. Preparation of Thifluzamide Polylactic Acid Glycolic Acid Copolymer Microspheres and Its Effect on the Growth of Cucumber Seedlings. Int J Mol Sci 2023; 24:10121. [PMID: 37373269 DOI: 10.3390/ijms241210121] [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: 04/30/2023] [Revised: 06/12/2023] [Accepted: 06/13/2023] [Indexed: 06/29/2023] Open
Abstract
The polylactic acid-glycolic acid copolymer (PLGA) has been proven to be applicable in medicine, but there is limited research on its application and safety in the agricultural field. In this paper, thifluzamide PLGA microspheres were prepared via phacoemulsification and solvent volatilization, using the PLGA copolymer as the carrier and thifluzamide as the active component. It was found that the microspheres had good slow-release performance and fungicidal activity against Rhizoctonia solani. A comparative study was conducted to show the effect of thifluzamide PLGA microspheres on cucumber seedlings. Physiological and biochemical indexes of cucumber seedlings, including dry weight, root length, chlorophyll, protein, flavonoids, and total phenol content, indicated that the negative effect of thifluzamide on plant growth could be mitigated when it was wrapped in PLGA microspheres. This work explores the feasibility of PLGA as carriers in fungicide applications.
Collapse
Affiliation(s)
- Yuanyuan Li
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Chaojie Wang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Xile Deng
- Hunan Agricultural Biotechnology Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China
| | - Runze Cai
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Lidong Cao
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Chong Cao
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Li Zheng
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Pengyue Zhao
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Qiliang Huang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| |
Collapse
|
3
|
Tsachouridis K, Christodoulou E, Zamboulis A, Michopoulou A, Barmpalexis P, Bikiaris DN. Evaluation of poly(lactic acid)/ and poly(lactic-co-glycolic acid)/ poly(ethylene adipate) copolymers for the preparation of paclitaxel loaded drug nanoparticles. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
4
|
Feng L, Bian X, Li G, Chen X. Compatibility and Thermal and Structural Properties of Poly(l-lactide)/Poly(l-co-d-lactide) Blends. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c02599] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lidong Feng
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, China
- Jilin Biomedical Polymers Engineering Laboratory, Changchun 130022, Jilin, China
| | - Xinchao Bian
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, China
- Jilin Biomedical Polymers Engineering Laboratory, Changchun 130022, Jilin, China
| | - Gao Li
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, China
- Jilin Biomedical Polymers Engineering Laboratory, Changchun 130022, Jilin, China
| | - Xuesi Chen
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, China
- Jilin Biomedical Polymers Engineering Laboratory, Changchun 130022, Jilin, China
| |
Collapse
|
5
|
Longo A, Dal Poggetto G, Malinconico M, Laurienzo P, Di Maio E, Di Lorenzo ML. Enhancement of crystallization kinetics of poly(l-lactic acid) by grafting with optically pure branches. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123852] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
6
|
Decomposition Factor Analysis Based on Virtual Experiments throughout Bayesian Optimization for Compost-Degradable Polymers. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11062820] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Bio-based polymers have been considered as an alternative to oil-based materials for their “carbon-neutral” environmentally degrative features. However, degradation is a complex system in which environmental factors and preparation conditions are involved, and the relationship between degradation and these factors/conditions has not yet been clarified. Moreover, an efficient system that addresses multiple degradation factors has not been developed for practical use. Thus, we constructed a decomposition degree predictive model to explore degradation factors based on analytical data and experimental conditions. The predictive model was constructed by machine learning using a dataset. The objective variable was the molecular weight, and the explanatory variables were the moisture content in a compost environment, degradation period, degree of crystallinity pre-experiment, and features of solid-state nuclear magnetic resonance spectra. The good accuracy of this predictive model was confirmed by statistical variables. The moisture content in the compost environment was a critical factor for considering initial degradation; specific scores revealed the contribution of degradation factors. Furthermore, the optimum decomposition degree, various analytical values, and experimental conditions were predictable when this predictive model was combined with Bayesian optimization. Information obtained from virtual experiments is expected to promote the material design and development of bio-based plastics.
Collapse
|
7
|
Poly( l-Lactic Acid)/Pine Wood Bio-Based Composites. MATERIALS 2020; 13:ma13173776. [PMID: 32859082 PMCID: PMC7503300 DOI: 10.3390/ma13173776] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 08/17/2020] [Accepted: 08/21/2020] [Indexed: 12/20/2022]
Abstract
Bio-based composites made of poly(l-lactic acid) (PLLA) and pine wood were prepared by melt extrusion. The composites were compatibilized by impregnation of wood with γ-aminopropyltriethoxysilane (APE). Comparison with non-compatibilized formulation revealed that APE is an efficient compatibilizer for PLLA/wood composites. Pine wood particles dispersed within PLLA act as nucleating agents able to start the growth of PLLA crystals, resulting in a faster crystallization rate and increased crystal fraction. Moreover, the composites have a slightly lower thermal stability compared to PLLA, proportional to filler content, due to the lower thermal stability of wood. Molecular dynamics was investigated using the solid-state 1H NMR technique, which revealed restrictions in the mobility of polymer chains upon the addition of wood, as well as enhanced interfacial adhesion between the filler and matrix in the composites compatibilized with APE. The enhanced interfacial adhesion in silane-treated composites was also proved by scanning electron microscopy and resulted in slightly improved deformability and impact resistance of the composites.
Collapse
|
8
|
Suganuma K, Asakura T, Oshimura M, Hirano T, Ute K, Cheng HN. NMR Analysis of Poly(Lactic Acid) via Statistical Models. Polymers (Basel) 2019; 11:polym11040725. [PMID: 31010265 PMCID: PMC6523427 DOI: 10.3390/polym11040725] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 04/15/2019] [Accepted: 04/16/2019] [Indexed: 11/16/2022] Open
Abstract
The physical properties of poly(lactic acid) (PLA) are influenced by its stereoregularity and stereosequence distribution, and its polymer stereochemistry can be effectively studied by NMR spectroscopy. In previously published NMR studies of PLA tacticity, the NMR data were fitted to pair-addition Bernoullian models. In this work, we prepared several PLA samples with a tin catalyst at different L,L-lactide and D,D-lactide ratios. Upon analysis of the tetrad intensities with the pair-addition Bernoullian model, we found substantial deviations between observed and calculated intensities due to the presence of transesterification and racemization during the polymerization processes. We formulated a two-state (pair-addition Bernoullian and single-addition Bernoullian) model, and it gave a better fit to the observed data. The use of the two-state model provides a quantitative measure of the extent of transesterification and racemization, and potentially yields useful information on the polymerization mechanism.
Collapse
Affiliation(s)
- Koto Suganuma
- Material Analysis Research Center, Teijin Ltd, Hino, Tokyo 191-8512, Japan.
| | - Tetsuo Asakura
- Department of Biotechnology, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan.
| | - Miyuki Oshimura
- Department of Applied Chemistry, Tokushima University, 2-1 Minamijosanjima, Tokushima 770-8506, Japan.
| | - Tomohiro Hirano
- Department of Applied Chemistry, Tokushima University, 2-1 Minamijosanjima, Tokushima 770-8506, Japan.
| | - Koichi Ute
- Department of Applied Chemistry, Tokushima University, 2-1 Minamijosanjima, Tokushima 770-8506, Japan.
| | - H N Cheng
- Southern Regional Research Center, USDA Agricultural Research Service, 1100 Robert E. Lee Blvd., New Orleans, LA 70124, USA.
| |
Collapse
|
9
|
Compatibility confirmation and refinement of thermal and mechanical properties of poly (lactic acid)/poly (ethylene- co -glycidyl methacrylate) blend reinforced by hexagonal boron nitride. REACT FUNCT POLYM 2017. [DOI: 10.1016/j.reactfunctpolym.2017.05.005] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
10
|
Spinella S, Cai J, Samuel C, Zhu J, McCallum SA, Habibi Y, Raquez JM, Dubois P, Gross RA. Polylactide/Poly(ω-hydroxytetradecanoic acid) Reactive Blending: A Green Renewable Approach to Improving Polylactide Properties. Biomacromolecules 2015; 16:1818-26. [PMID: 25848833 DOI: 10.1021/acs.biomac.5b00394] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A green manufacturing technique, reactive extrusion (REx), was employed to improve the mechanical properties of polylactide (PLA). To achieve this goal, a fully biosourced PLA based polymer blend was conceived by incorporating small quantities of poly(ω-hydroxytetradecanoic acid) (PC14). PLA/PC14 blends were compatibilized by transesterification reactions promoted by 200 ppm titanium tetrabutoxide (Ti(OBu)4) during REx. REx for 15 min at 150 rpm and 200 °C resulted in enhanced blend mechanical properties while minimizing losses in PLA molecular weight. SEM analysis of the resulting compatibilized phase-separated blends showed good adhesion between dispersed PC14 phases within the continuous PLA phase. Direct evidence for in situ synthesis of PLA-b-PC14 copolymers was obtained by HMBC and HSQC NMR experiments. The size of the dispersed phase was tuned by the screw speed to "tailor" the blend morphology. In the presence of 200 ppm Ti(OBu)4, inclusion of only 5% PC14 increased the elongation at break of PLA from 3 to 140% with only a slight decrease in the tensile modulus (3200 to 2900 MPa). Furthermore, PLA's impact strength was increased by 2.4× that of neat PLA for 20% PC14 blends prepared by REx. Blends of PLA and PC14 are expected to expand the potential uses of PLA-based materials.
Collapse
Affiliation(s)
- Stephen Spinella
- †Center for Biotechnology and Interdisciplinary Studies and Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, 110 Eighth Street, Troy, New York 12180, United States.,‡Department of Chemical and Biomolecular Engineering, NYU Polytechnic School of Engineering, 6 Metrotech Center, Brooklyn, New York 11201, United States.,§Centre d'Innovation et de Recherche en MAtériaux Polymères CIRMAP, Service des Matériaux Polymères et Composites, University of Mons, Place du Parc 23, B-7000 Mons, Belgium
| | - Jiali Cai
- ‡Department of Chemical and Biomolecular Engineering, NYU Polytechnic School of Engineering, 6 Metrotech Center, Brooklyn, New York 11201, United States
| | - Cedric Samuel
- §Centre d'Innovation et de Recherche en MAtériaux Polymères CIRMAP, Service des Matériaux Polymères et Composites, University of Mons, Place du Parc 23, B-7000 Mons, Belgium
| | - Jianhui Zhu
- †Center for Biotechnology and Interdisciplinary Studies and Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, 110 Eighth Street, Troy, New York 12180, United States.,‡Department of Chemical and Biomolecular Engineering, NYU Polytechnic School of Engineering, 6 Metrotech Center, Brooklyn, New York 11201, United States
| | - Scott A McCallum
- †Center for Biotechnology and Interdisciplinary Studies and Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, 110 Eighth Street, Troy, New York 12180, United States
| | - Youssef Habibi
- §Centre d'Innovation et de Recherche en MAtériaux Polymères CIRMAP, Service des Matériaux Polymères et Composites, University of Mons, Place du Parc 23, B-7000 Mons, Belgium
| | - Jean-Marie Raquez
- §Centre d'Innovation et de Recherche en MAtériaux Polymères CIRMAP, Service des Matériaux Polymères et Composites, University of Mons, Place du Parc 23, B-7000 Mons, Belgium
| | - Philippe Dubois
- §Centre d'Innovation et de Recherche en MAtériaux Polymères CIRMAP, Service des Matériaux Polymères et Composites, University of Mons, Place du Parc 23, B-7000 Mons, Belgium
| | - Richard A Gross
- †Center for Biotechnology and Interdisciplinary Studies and Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, 110 Eighth Street, Troy, New York 12180, United States
| |
Collapse
|