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Pang J, Ke Z, Jiang T, Tang F, Zhang S, He K. Synthesis and catalytic performance of wood cellulose nanofibers grafted with polylactic acid in rare-earth complexes based on tetrazole carboxylic acids. Int J Biol Macromol 2023; 253:127218. [PMID: 37793529 DOI: 10.1016/j.ijbiomac.2023.127218] [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: 07/17/2023] [Revised: 09/17/2023] [Accepted: 10/01/2023] [Indexed: 10/06/2023]
Abstract
Stannous octanoate [Sn(Oct)2] and 4-dimethylamino pyridine (DMAP) were used to catalyze the synthesis of amphiphilic cellulose-based graft copolymers, but the acute toxicity of tin ions and DMAP prompts the need for the application of less harmful catalysts. Herein, green catalyst complexes 1-3 [M(H0.5L)2(H2O)5]·2(H2O) (M = Sm, 1; M = Nd, 2; M = Eu, 3; H2L = 4-(3-(tetrazol-5-yl)pyridin-5-yl)benzoic acid) were synthesized, and their properties were systematically investigated. Single-crystal X-ray diffraction showed that the complexes possessed a zero-dimensional structure, while the thermogravimetry and scanning electron microscopy results confirmed their stability after heating at 110 °C for 10 h. Using complexes 1-3 and DMAP as the catalysts, CNFs were grafted with l-lactide via homogeneous ring-opening polymerization to form wood cellulose nanofibers grafted with l-lactide (WGLAs), and the effects of the ratio of wood cellulose nanofibers (WCNFs) to l-lactide ([AGU]/[LA]) and catalyst dosage were studied. The polymerization followed the coordination-insertion mechanism. Under comparable reaction conditions, the grafting ratio of WGLA-1 reached 84.7 %, and the grafting ratio of complex 1 was found to be higher than those achieved using DMAP. WGLAs demonstrated good thermal stability without cytotoxicity, and the residual catalysts in the WGLAs exhibited fluorescence characteristics. Overall, amphiphilic cellulose-based materials with fluorescence emission offered a promising modification strategy to prepare high-performance polymer composites for agriculture and biomedical application.
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Affiliation(s)
- Jinying Pang
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, China; Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, China
| | - Zhilin Ke
- College of Chemistry, Guangdong University of Petrochemical Technology, Maoming, Guangdong 525000, China; Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, China
| | - Tanlin Jiang
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, China
| | - Fushun Tang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, China
| | - Shuhua Zhang
- College of Chemistry, Guangdong University of Petrochemical Technology, Maoming, Guangdong 525000, China.
| | - Kunhuan He
- College of petroleum and chemical Engineering, Beibu Gulf University, Qinzhou 535011, China.
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Chen D, Zhao Z, Wu Y, Prakash S, Wan J. Dissolution behaviour of corn starch with different amylose content in ionic liquids. Int J Biol Macromol 2023; 228:207-215. [PMID: 36535353 DOI: 10.1016/j.ijbiomac.2022.12.133] [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: 07/09/2022] [Revised: 12/08/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022]
Abstract
The dissolution behaviour of three corn starches, including corn starch (CS), high amylose corn starch (HACS) and waxy corn starch (WCS) with different amylose content in 1-allyl-3-methylimidazolium chloride ([AMIM]Cl) and 1-butyl-3-methylimidazolium chloride ([BMIM]Cl) were studied by comparing their dissolution state in ionic liquids (ILs). Further, the structural and thermal properties of the regenerated starch were analyzed. WCS with the lowest amylose content had the fastest dissolution rate, the most extensive structural damage, and the lowest solubility and required the maximum energy for dissolution. In the process of dissolution-regeneration, the A-type crystalline structure of WCS and CS was completely destroyed and transformed into an amorphous structure, while the B-type crystalline structure of HACS transformed into an ordered V-shaped structure. And the thermal stability of starch was improved after dissolution-regeneration in ILs. Among the two kinds of ILs, [AMIM] Cl had a better ability to dissolve starch, causing minor damage to the starch.
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Affiliation(s)
- Dan Chen
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, Jiangxi, China
| | - Zhe Zhao
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, Jiangxi, China
| | - Yingying Wu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, Jiangxi, China
| | - Sangeeta Prakash
- School of Agriculture and Food Sciences, The University of Queensland, St. Lucia, Queensland 4072, Australia
| | - Jie Wan
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, Jiangxi, China.
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3
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Effects of water/ionic liquid ratios on the physicochemical properties of high amylose maize starch-lauric acid complex. Food Hydrocoll 2023. [DOI: 10.1016/j.foodhyd.2022.108134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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4
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Sowińska-Baranowska A, Maciejewska M, Duda P. The Potential Application of Starch and Walnut Shells as Biofillers for Natural Rubber (NR) Composites. Int J Mol Sci 2022; 23:ijms23147968. [PMID: 35887318 PMCID: PMC9323199 DOI: 10.3390/ijms23147968] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/15/2022] [Accepted: 07/16/2022] [Indexed: 02/01/2023] Open
Abstract
The goal of this study was application of corn starch and ground walnut shells in various amounts by weight as biofillers of natural rubber (NR) biocomposites. Additionally, ionic liquid 1-butyl-3-methylimidazolium chloride (BmiCl) and (3-aminopropyl)-triethoxysilane (APTES) were used to increase the activity of biofillers and to improve the curing characteristics of NR composites. The effect of biofillers used and their modification with aminosilane or ionic liquid on the curing characteristics of NR composites and their functional properties, including crosslink density, mechanical properties in static and dynamic conditions, hardness, thermal stability and resistance to thermo-oxidative aging were investigated. Starch and ground walnut shells were classified as inactive fillers, which can be used alternatively to commercial inactive fillers, e.g., chalk. BmiCl and APTES were successfully used to support the vulcanization and to improve the dispersion of biofillers in NR elastomer matrix. Vulcanizates with starch, especially those containing APTES and BmiCl, exhibited improved tensile properties due to the higher crosslink density and homogenous dispersion of starch, which resulted from BmiCl addition. NR filled with ground walnut shells demonstrated improved resistance to thermo-oxidative aging. It resulted from lignin present in walnut shells, the components of which belong to polyphenols, that have an antioxidant activity.
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Cheechana N, Benchaphanthawee W, Akkravijitkul N, Rithchumpon P, Junpirom T, Limwanich W, Punyodom W, Kungwan N, Ngaojampa C, Thavornyutikarn P, Meepowpan P. Organocatalytic Ring-Opening Polymerization of ε-Caprolactone Using bis( N-( N'-butylimidazolium)alkane Dicationic Ionic Liquids as the Metal-Free Catalysts: Polymer Synthesis, Kinetics and DFT Mechanistic Study. Polymers (Basel) 2021; 13:polym13244290. [PMID: 34960841 PMCID: PMC8705680 DOI: 10.3390/polym13244290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 12/03/2021] [Accepted: 12/03/2021] [Indexed: 01/31/2023] Open
Abstract
In this work, we successfully synthesized high thermal stable 1,n-bis(N-(N′-butylimidazolium)alkane bishexafluorophosphates (1,n-bis[Bim][PF6], n = 4, 6, 8, and 10) catalysts in 55–70% yields from imidazole which were applied as non-toxic DILs catalysts with 1-butanol as initiator for the bulk ROP of ε-caprolactone (CL) in the varied ratio of CL/nBuOH/1,4-bis[Bim][PF6] from 200/1.0/0.25–4.0 to 700/1.0/0.25–4.0 by mol%. The result found that the optimal ratio of CL/nBuOH/1,4-bis[Bim][PF6] 400/1.0/0.5 mol% at 120 °C for 72 h led to the polymerization conversions higher than 95%, with the molecular weight (Mw) of PCL 20,130 g mol−1 (Đ~1.80). The polymerization rate of CL increased with the decreasing linker chain length of ionic liquids. Moreover, the mechanistic study was investigated by DFT using B3LYP (6–31G(d,p)) as basis set. The most plausible mechanism included the stepwise and coordination insertion in which the alkoxide insertion step is the rate-determining step.
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Affiliation(s)
- Nathaporn Cheechana
- Department of Chemistry, Faculty of Science, Chiang Mai University, 239 Huay Kaew Road, Chiang Mai 50200, Thailand; (N.C.); (W.B.); (N.A.); (P.R.); (T.J.); (W.P.); (N.K.); (C.N.); (P.T.)
- Graduate School, Chiang Mai University, 239 Huay Kaew Road, Chiang Mai 50200, Thailand
| | - Wachara Benchaphanthawee
- Department of Chemistry, Faculty of Science, Chiang Mai University, 239 Huay Kaew Road, Chiang Mai 50200, Thailand; (N.C.); (W.B.); (N.A.); (P.R.); (T.J.); (W.P.); (N.K.); (C.N.); (P.T.)
- Graduate School, Chiang Mai University, 239 Huay Kaew Road, Chiang Mai 50200, Thailand
| | - Natthapol Akkravijitkul
- Department of Chemistry, Faculty of Science, Chiang Mai University, 239 Huay Kaew Road, Chiang Mai 50200, Thailand; (N.C.); (W.B.); (N.A.); (P.R.); (T.J.); (W.P.); (N.K.); (C.N.); (P.T.)
- Graduate School, Chiang Mai University, 239 Huay Kaew Road, Chiang Mai 50200, Thailand
| | - Puracheth Rithchumpon
- Department of Chemistry, Faculty of Science, Chiang Mai University, 239 Huay Kaew Road, Chiang Mai 50200, Thailand; (N.C.); (W.B.); (N.A.); (P.R.); (T.J.); (W.P.); (N.K.); (C.N.); (P.T.)
- Graduate School, Chiang Mai University, 239 Huay Kaew Road, Chiang Mai 50200, Thailand
| | - Thiti Junpirom
- Department of Chemistry, Faculty of Science, Chiang Mai University, 239 Huay Kaew Road, Chiang Mai 50200, Thailand; (N.C.); (W.B.); (N.A.); (P.R.); (T.J.); (W.P.); (N.K.); (C.N.); (P.T.)
| | - Wanich Limwanich
- Faculty of Sciences and Agricultural Technology, Rajamangala University of Technology Lanna, 128 Huay Kaew Road, Chiang Mai 50300, Thailand;
| | - Winita Punyodom
- Department of Chemistry, Faculty of Science, Chiang Mai University, 239 Huay Kaew Road, Chiang Mai 50200, Thailand; (N.C.); (W.B.); (N.A.); (P.R.); (T.J.); (W.P.); (N.K.); (C.N.); (P.T.)
- Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Chiang Mai University, 239 Huay Kaew Road, Chiang Mai 50200, Thailand
- Center of Excellence in Materials Science and Technology, Chiang Mai University, 239 Huay Kaew Road, Chiang Mai 50200, Thailand
| | - Nawee Kungwan
- Department of Chemistry, Faculty of Science, Chiang Mai University, 239 Huay Kaew Road, Chiang Mai 50200, Thailand; (N.C.); (W.B.); (N.A.); (P.R.); (T.J.); (W.P.); (N.K.); (C.N.); (P.T.)
- Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Chiang Mai University, 239 Huay Kaew Road, Chiang Mai 50200, Thailand
- Center of Excellence in Materials Science and Technology, Chiang Mai University, 239 Huay Kaew Road, Chiang Mai 50200, Thailand
| | - Chanisorn Ngaojampa
- Department of Chemistry, Faculty of Science, Chiang Mai University, 239 Huay Kaew Road, Chiang Mai 50200, Thailand; (N.C.); (W.B.); (N.A.); (P.R.); (T.J.); (W.P.); (N.K.); (C.N.); (P.T.)
| | - Praput Thavornyutikarn
- Department of Chemistry, Faculty of Science, Chiang Mai University, 239 Huay Kaew Road, Chiang Mai 50200, Thailand; (N.C.); (W.B.); (N.A.); (P.R.); (T.J.); (W.P.); (N.K.); (C.N.); (P.T.)
| | - Puttinan Meepowpan
- Department of Chemistry, Faculty of Science, Chiang Mai University, 239 Huay Kaew Road, Chiang Mai 50200, Thailand; (N.C.); (W.B.); (N.A.); (P.R.); (T.J.); (W.P.); (N.K.); (C.N.); (P.T.)
- Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Chiang Mai University, 239 Huay Kaew Road, Chiang Mai 50200, Thailand
- Center of Excellence in Materials Science and Technology, Chiang Mai University, 239 Huay Kaew Road, Chiang Mai 50200, Thailand
- Correspondence:
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Wang H, Zhao X, Huang Y, Liao J, Liu Y, Pan Y. Rapid quality control of medicine and food dual purpose plant polysaccharides by matrix assisted laser desorption/ionization mass spectrometry. Analyst 2020; 145:2168-2175. [PMID: 32104793 DOI: 10.1039/c9an02440a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
With their multiple biological activities and health benefit effects, polysaccharides from medicine and food dual purpose plants (MFDPPPs) have been extensively applied in many fields, including in medical treatments, stock farming, and cosmetics. However, to date, quality issues of MFDPPPs and technologies for the analysis of polysaccharides have posed challenges to chemists. Reported herein is a rapid and high-throughput quality control method for analyzing MFDPPPs, based on matrix assisted laser desorption/ionization mass spectrometry (MALDI-MS). For the analysis of illegally added and doped substances, ferroferric oxide nanoparticles were employed as the MALDI matrix to avoid small molecule interference. Qualitatively, high sensitivity was obtained for both illegal drugs and glucose. Quantitatively, the best linear response (R2 > 0.99) was attained in the concentration range from 0.005 to 1 mg mL-1 for glucose. For the analysis of polysaccharides, 2,5-dihydroxybenzoic acid/N-methylaniline was employed as the MALDI matrix to increase the detection sensitivity and mass range coverage. Furthermore, the established method was successfully applied to the analysis of supplements from Astragalus polysaccharides and Lentinan real samples, showing its potential in quality control for MFDPPPs.
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Affiliation(s)
- Huiwen Wang
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China.
| | - Xiaoyong Zhao
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China.
| | - Yu Huang
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China.
| | - Jiancong Liao
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China.
| | - Yaqin Liu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China.
| | - Yuanjiang Pan
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China.
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7
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Yan Y, Dou Q. Effect of Peroxide on Compatibility, Microstructure, Rheology, Crystallization, and Mechanical Properties of PBS/Waxy Starch Composites. STARCH-STARKE 2020. [DOI: 10.1002/star.202000184] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Yue Yan
- College of Materials Science and Engineering Nanjing Tech University Nanjing 211816 China
| | - Qiang Dou
- College of Materials Science and Engineering Nanjing Tech University Nanjing 211816 China
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8
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Zhao Y, Chen X, Zhao Y, Jia W, Chang X, Liu H, Liu N. Optimization of extraction parameters of Pleurotus eryngii polysaccharides and evaluation of the hypolipidemic effect. RSC Adv 2020; 10:11918-11928. [PMID: 35694324 PMCID: PMC9122559 DOI: 10.1039/c9ra10991a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Accepted: 03/13/2020] [Indexed: 01/05/2023] Open
Abstract
The hot water extraction of polysaccharides from the fruiting body of Pleurotus eryngii was studied. In this paper, according to single-factor experiments, a response surface methodology and the Box–Behnken design were applied to optimize the extraction parameters of Pleurotus eryngii polysaccharides (PEP). The optimal extraction conditions were as follows: a temperature of 79 °C, a time of 3.11 h, a ratio of water to fruiting bodies of 52.6 mL g−1. Under these parameters, the yield of PEP was 7.53%. When mice with hyperlipidemia were administered low, medium or high doses of PEP, their body weight was reduced compared with the model group, and the degree of weight loss was proportional to the dose. At the 16th week of PEP treatment, blood lipid biochemical parameters such as total cholesterol, triglycerides, low-density lipoprotein-cholesterol, aspartate aminotransferase, and alanine aminotransferase levels were all decreased. However, high-density lipoprotein-cholesterol levels increased after PEP treatment. Histopathological examination of the liver showed that low, medium and high doses of PEP had a certain liver protective effect. High-dose PEP treatment had the best effect in regard to lipid-lowering and liver protection. In addition, the metabolome of the mice was analyzed by LC-MS, and the results indicated that C16 sphinganine can be used as a potential biomarker, which displayed significant differences among the six groups. In conclusion, the possible metabolic mechanism of the PEP on lipid-lowering was closely related to sphingolipid metabolism. The hot water extraction of polysaccharides from the fruiting body of Pleurotus eryngii was studied.![]()
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Affiliation(s)
- Yuanyuan Zhao
- School of Food and Biological Engineering, Shaanxi University of Science and Technology Xi'an 710021 China
| | - Xuefeng Chen
- School of Food and Biological Engineering, Shaanxi University of Science and Technology Xi'an 710021 China
| | - Yanni Zhao
- School of Food and Biological Engineering, Shaanxi University of Science and Technology Xi'an 710021 China
| | - Wei Jia
- School of Food and Biological Engineering, Shaanxi University of Science and Technology Xi'an 710021 China
| | - Xiangna Chang
- School of Food and Biological Engineering, Shaanxi University of Science and Technology Xi'an 710021 China
| | - Huan Liu
- School of Food and Biological Engineering, Shaanxi University of Science and Technology Xi'an 710021 China
| | - Ning Liu
- School of Food and Biological Engineering, Shaanxi University of Science and Technology Xi'an 710021 China
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Liu S, Zhang L, Chen X, Chu T, Guo Y, Niu M. Cationic micelles self-assembled from quaternized cellulose-g-oligo (ε-caprolactone) amphiphilic copolymers. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.08.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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10
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Wang X, Yang R, Huang L, Li J, Liu Z. Preparation of starch-graft-poly(methyl methacrylate) via SET-LRP at molecular level and its self-assembly. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.04.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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11
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Imre B, García L, Puglia D, Vilaplana F. Reactive compatibilization of plant polysaccharides and biobased polymers: Review on current strategies, expectations and reality. Carbohydr Polym 2018; 209:20-37. [PMID: 30732800 DOI: 10.1016/j.carbpol.2018.12.082] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 11/27/2018] [Accepted: 12/24/2018] [Indexed: 10/27/2022]
Abstract
Our society is amidst a technological revolution towards a sustainable economy, focused on the development of biobased products in virtually all sectors. In this context, plant polysaccharides, as the most abundant macromolecules present in biomass represent a fundamental renewable resource for the replacement of fossil-based polymeric materials in commodity and engineering applications. However, native polysaccharides have several disadvantages compared to their synthetic counterparts, including reduced thermal stability, moisture absorption and limited mechanical performance, which hinder their direct application in native form in advanced material systems. Thus, polysaccharides are generally used in a derivatized form and/or in combination with other biobased polymers, requiring the compatibilization of such blends and composites. In this review we critically explore the current status and the future outlook of reactive compatibilization strategies of the most common plant polysaccharides in blends with biobased polymers. The chemical processes for the modification and compatibilization of starch and lignocellulosic based materials are discussed, together with the practical implementation of these reactive compatibilization strategies with special emphasis on reactive extrusion. The efficiency of these strategies is critically discussed in the context on the definition of blending and compatibilization from a polymer physics standpoint; this relies on the detailed evaluation of the chemical structure of the constituent plant polysaccharides and biobased polymers, the morphology of the heterogeneous polymeric blends, and their macroscopic behavior, in terms of rheological and mechanical properties.
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Affiliation(s)
- Balázs Imre
- Division of Glycoscience, Department of Chemistry, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Lidia García
- Fundación Aitiip, Polígono Industrial Empresarium, C/Romero Nº 12, Zaragoza 50720, Spain; Tecnopackaging S.L., Polígono Industrial Empresarium, C/Romero Nº 12, Zaragoza 50720, Spain
| | - Debora Puglia
- Department of Civil and Environmental Engineering, University of Perugia, Terni, Italy
| | - Francisco Vilaplana
- Division of Glycoscience, Department of Chemistry, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm, Sweden.
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Biopolymer-Based Composite Materials Prepared Using Ionic Liquids. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2018; 168:133-176. [PMID: 30242432 DOI: 10.1007/10_2018_78] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Biopolymer-based composite materials have many potential applications in biomedical, pharmaceutical, environmental, biocatalytic, and bioelectronic fields, owing to their inherent biocompatibility and biodegradability. When used as solvents, ionic liquids can be used to fabricate biopolymers such as polysaccharides and proteins into various forms, including molded shapes, films, fibers, and beads. This article summarizes the processes for preparing biopolymer-based composite materials using ionic liquids. The processes include biopolymer dissolution using ionic liquids, regeneration of the biopolymer by an anti-solvent, formation of shapes, and drying of the regenerated biopolymer. In particular, the preparation and applications of biopolymer blend-based composite materials containing two or more biopolymers are addressed.
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Xiang F, Copeland L, Wang S, Wang S. Nature of phase transitions of waxy maize starch in water-ionic liquid mixtures. Int J Biol Macromol 2018; 112:315-325. [DOI: 10.1016/j.ijbiomac.2018.01.158] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 01/18/2018] [Accepted: 01/23/2018] [Indexed: 01/20/2023]
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14
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Yu Y, Gao X, Jiang Z, Zhang W, Ma J, Liu X, Zhang L. Homogeneous grafting of cellulose with polycaprolactone using quaternary ammonium salt systems and its application for ultraviolet-shielding composite films. RSC Adv 2018; 8:10865-10872. [PMID: 35541510 PMCID: PMC9078967 DOI: 10.1039/c8ra00120k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Accepted: 03/05/2018] [Indexed: 12/22/2022] Open
Abstract
Microcrystalline cellulose grafted polycaprolactone (MCC-g-PCL) was successfully synthesized by ring-opening copolymerization catalyzed by 4-dimethylaminopyridine in a dual tetrabutylammonium acetate/dimethyl sulfoxide solvent system. A novel ultraviolet-shielding film based on MCC-g-PCL was prepared by introducing graphene oxide (GO). The results obtained showed that the introduction of GO not only obviously influenced the inherent structure of the MCC-g-PCL but remarkably changed the surface morphology of the composite film. Moreover, the GO/MCC-g-PCL composite showed a significant improvement in tensile strength, from 2.63 to 4.55 MPa, as well as elongation-at-break, from 6.4% to 15.5%, compared with the pure MCC-g-PCL film, owing to the strong hydrogen-bonding interaction that physically crosslinked GO with MCC-g-PCL. Importantly, GO/MCC-g-PCL composite films offered an effective high-energy light-shielding capacity; in particular MCC-g-PCL film containing 1.0 wt% GO possessed good absorbance between 200 nm and 300 nm. This study provides a framework for developing cellulose-based ultraviolet-shielding polymers and better understanding the ultraviolet-shielding mechanism. Microcrystalline cellulose graft polycaprolactone (MCC-g-PCL) was successfully synthesized by ring-opening copolymerization catalyzed by 4-dimethylaminopyridine in a dual tetrabutylammonium acetate/dimethyl sulfoxide solvent system.![]()
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Affiliation(s)
- Yongqi Yu
- Department of Material Science and Technology
- MOE Key Laboratory of Wooden Material Science and Application
- Beijing Forestry University
- Beijing
- P. R. China
| | - Xin Gao
- Department of Material Science and Technology
- MOE Key Laboratory of Wooden Material Science and Application
- Beijing Forestry University
- Beijing
- P. R. China
| | - Zeming Jiang
- Department of Material Science and Technology
- MOE Key Laboratory of Wooden Material Science and Application
- Beijing Forestry University
- Beijing
- P. R. China
| | - Wentao Zhang
- Department of Material Science and Technology
- MOE Key Laboratory of Wooden Material Science and Application
- Beijing Forestry University
- Beijing
- P. R. China
| | - Jiwei Ma
- Department of Material Science and Technology
- MOE Key Laboratory of Wooden Material Science and Application
- Beijing Forestry University
- Beijing
- P. R. China
| | - Xuejiao Liu
- Department of Material Science and Technology
- MOE Key Laboratory of Wooden Material Science and Application
- Beijing Forestry University
- Beijing
- P. R. China
| | - Liping Zhang
- Department of Material Science and Technology
- MOE Key Laboratory of Wooden Material Science and Application
- Beijing Forestry University
- Beijing
- P. R. China
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15
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Zhang X, Liu C, Zhang A, Sun R. Organic Catalysis for Ring-Opening Graft Polymerization of p-Dioxanone with Xylan in Ionic liquid. Polymers (Basel) 2017; 9:E345. [PMID: 30971021 PMCID: PMC6418731 DOI: 10.3390/polym9080345] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 08/01/2017] [Accepted: 08/04/2017] [Indexed: 11/25/2022] Open
Abstract
Recently, organic catalysis has become a powerful alternative to the use of more traditional metal-based catalysts. In this study, 4-dimethylaminopyridine (DMAP), 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU), and 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) were applied to mediate the ring-opening graft polymerization (ROGP) of p-dioxanone (PDO) with xylan-based hemicelluloses in ionic liquid 1-butyl-3-methylimidazolium chloride ([Bmim]Cl). Excellent control of the molar ratio of the catalyst to anhydroxylose units (AXU) in xylan was found for a good tuning of the weight percent gain (WPG) of xylan-graft-poly(p-dioxanone) (xylan-g-PPDO) copolymers. As a result, the maximum WPG of xylan-g-PPDO copolymers was 431.07% (DMAP/AXU of 2/1), 316.72% (DBU/AXU of 0.2/1), and 323.15% (TBD/AXU of 0.2/1), respectively. The structure of xylan-g-PPDO copolymers was characterized with FT-IR and NMR. The thermal properties of copolymers were investigated using thermogravimetric analysis (TGA/DTG) and differential scanning calorimetry (DSC), and a significant difference was observed regarding the transition temperature (Tg), melting temperature (Tm), and crystallization temperature (Tc).
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Affiliation(s)
- Xueqin Zhang
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Chuanfu Liu
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Aiping Zhang
- College of Materials and Energy, Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, South China Agricultural University, Guangzhou 510642, China.
| | - Runcang Sun
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 10083, China.
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Meimoun J, Wiatz V, Saint-Loup R, Parcq J, Favrelle A, Bonnet F, Zinck P. Modification of starch by graft copolymerization. STARCH-STARKE 2017. [DOI: 10.1002/star.201600351] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Julie Meimoun
- Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois; UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide; Lille France
- Institut Français des Matériaux Agro-Sourcés; Villeneuve-d'Ascq France
| | | | | | | | - Audrey Favrelle
- Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois; UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide; Lille France
| | - Fanny Bonnet
- Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois; UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide; Lille France
| | - Philippe Zinck
- Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois; UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide; Lille France
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17
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Pal A, Pal S. Amphiphilic copolymer derived from tamarind gum and poly (methyl methacrylate) via ATRP towards selective removal of toxic dyes. Carbohydr Polym 2017; 160:1-8. [DOI: 10.1016/j.carbpol.2016.12.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2016] [Revised: 12/02/2016] [Accepted: 12/04/2016] [Indexed: 10/20/2022]
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18
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Ramírez-Hernández A, Aparicio-Saguilán A, Mata-Mata JL, González-García G, Hernández-Mendoza H, Gutiérrez-Fuentes A, Báez-García E. Chemical modification of banana starch by the in situ polymerization of ϵ-caprolactone in one step. STARCH-STARKE 2016. [DOI: 10.1002/star.201600197] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | | | - José L. Mata-Mata
- Exact Sciences Division; Department of Chemistry; University of Guanajuato; Guanajuato Mexico
| | - Gerardo González-García
- Exact Sciences Division; Department of Chemistry; University of Guanajuato; Guanajuato Mexico
| | - Héctor Hernández-Mendoza
- Laboratorio Nacional de Investigaciones en Forense Nuclear (LANAFONU); Instituto Nacional de Investigaciones Nucleares (ININ); Estado de México Mexico
| | | | - Eduardo Báez-García
- Exact Sciences Division; Department of Chemistry; University of Guanajuato; Guanajuato Mexico
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Mohammadyazdani N, Bozorgmehr MR, Momen-Heravi M. Conformation changes and diffusion of α-amylase in 1-hexyle-3-methylimidazolium chloride ionic liquid: A molecular dynamics simulation perspective. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.06.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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20
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Sheldon RA. Biocatalysis and Biomass Conversion in Alternative Reaction Media. Chemistry 2016; 22:12984-99. [DOI: 10.1002/chem.201601940] [Citation(s) in RCA: 127] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Roger A. Sheldon
- Molecular Sciences Institute; School of Chemistry; University of the Witwatersrand; 2050; Johannesburg South Africa
- Department of Biotechnology; Delft University of Technology; Julianalaan 136 2628 BL Delft Netherlands
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21
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Li D, Zhang X, Tian Y. Ionic liquids as novel solvents for biosynthesis of octenyl succinic anhydride-modified waxy maize starch. Int J Biol Macromol 2016; 86:119-25. [DOI: 10.1016/j.ijbiomac.2016.01.050] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Revised: 01/11/2016] [Accepted: 01/13/2016] [Indexed: 10/22/2022]
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22
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23
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Worzakowska M, Grochowicz M. Effect of some parameters on the synthesis and the physico-chemical properties of new amphiphilic starch-g-copolymers. Carbohydr Polym 2015; 130:344-52. [DOI: 10.1016/j.carbpol.2015.05.016] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Revised: 05/04/2015] [Accepted: 05/05/2015] [Indexed: 11/29/2022]
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24
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Morphology and phase transition of waxy cornstarch in solvents of 1-allyl-3-methylimidazolium chloride/water. Int J Biol Macromol 2015; 78:304-12. [DOI: 10.1016/j.ijbiomac.2015.04.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Revised: 04/04/2015] [Accepted: 04/12/2015] [Indexed: 11/18/2022]
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25
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Zhang X, Chen M, Wang H, Liu C, Zhang A, Sun R. Characterization of Xylan-graft-Polycaprolactone Copolymers Prepared in Ionic Liquid. Ind Eng Chem Res 2015. [DOI: 10.1021/acs.iecr.5b01323] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xueqin Zhang
- State
Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Mingjie Chen
- State
Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Huihui Wang
- State
Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Chuanfu Liu
- State
Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Aiping Zhang
- Institute
of New Energy and New Material, Guangdong Key Laboratory for Innovative
Development and Utilization of Forest Plant Germplasm, South China Agricultural University, Guangzhou 510640, China
| | - Runcang Sun
- State
Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
- Beijing
Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
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26
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Zhang X, Chen M, Liu C, Zhang A, Sun R. Homogeneous ring opening graft polymerization of ɛ-caprolactone onto xylan in dual polar aprotic solvents. Carbohydr Polym 2015; 117:701-709. [DOI: 10.1016/j.carbpol.2014.10.061] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Revised: 10/17/2014] [Accepted: 10/19/2014] [Indexed: 11/15/2022]
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27
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Men Y, Du X, Shen J, Wang L, Liu Z. Preparation of corn starch-g-polystyrene copolymer in ionic liquid: 1-ethyl-3-methylimidazolium acetate. Carbohydr Polym 2015; 121:348-54. [PMID: 25659709 DOI: 10.1016/j.carbpol.2014.12.068] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Revised: 12/23/2014] [Accepted: 12/25/2014] [Indexed: 10/24/2022]
Abstract
The copolymer of starch grafted with polystyrene (starch-g-PS) was synthesized with high grafting percentage by utilizing the ionic liquid 1-ethyl-3-methylimidazolium acetate ([EMIM]Ac) as solvent and potassium persulfate as initiator. The effect of various parameters upon the polymerization were studied including: initiator concentration, styrene:starch weight ratio, the reaction time and temperature. Grafting percentages were calculated using an FT-IR calibration method, with values up to 114%. The resulting copolymer was characterized using FT-IR, SEM, WAXD and TGA, which demonstrated that polystyrene side chains were evenly distributed on the starch backbone. Our results indicate that ionic liquid dissolution of starch, prior to polystyrene grafting, is a versatile methodology for the synthesis of amphiphilic, polysaccharide-based graft copolymers, having high grafting percent.
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Affiliation(s)
- Yongjun Men
- Institute of Polymer Chemistry and Physics, Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, PR China
| | - Xiyan Du
- Institute of Polymer Chemistry and Physics, Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, PR China
| | - Jianan Shen
- Institute of Polymer Chemistry and Physics, Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, PR China
| | - Leli Wang
- Institute of Polymer Chemistry and Physics, Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, PR China
| | - Zhengping Liu
- Institute of Polymer Chemistry and Physics, Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, PR China.
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28
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Wang L, Shen J, Men Y, Wu Y, Peng Q, Wang X, Yang R, Mahmood K, Liu Z. Corn starch-based graft copolymers prepared via ATRP at the molecular level. Polym Chem 2015. [DOI: 10.1039/c5py00184f] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Starch-g-PS and Starch-g-PMMA with controlled graft chains and high graft ratio were prepared at the molecular level.
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Affiliation(s)
- Leli Wang
- Institute of Polymer Chemistry and Physics
- Beijing Key Laboratory of Energy Conversion and Storage Materials
- College of Chemistry
- Beijing Normal University
- Beijing 100875
| | - Jianan Shen
- Institute of Polymer Chemistry and Physics
- Beijing Key Laboratory of Energy Conversion and Storage Materials
- College of Chemistry
- Beijing Normal University
- Beijing 100875
| | - Yongjun Men
- Institute of Polymer Chemistry and Physics
- Beijing Key Laboratory of Energy Conversion and Storage Materials
- College of Chemistry
- Beijing Normal University
- Beijing 100875
| | - Ying Wu
- Institute of Polymer Chemistry and Physics
- Beijing Key Laboratory of Energy Conversion and Storage Materials
- College of Chemistry
- Beijing Normal University
- Beijing 100875
| | - Qiaohong Peng
- Institute of Polymer Chemistry and Physics
- Beijing Key Laboratory of Energy Conversion and Storage Materials
- College of Chemistry
- Beijing Normal University
- Beijing 100875
| | - Xiaolin Wang
- Institute of Polymer Chemistry and Physics
- Beijing Key Laboratory of Energy Conversion and Storage Materials
- College of Chemistry
- Beijing Normal University
- Beijing 100875
| | - Rui Yang
- Institute of Polymer Chemistry and Physics
- Beijing Key Laboratory of Energy Conversion and Storage Materials
- College of Chemistry
- Beijing Normal University
- Beijing 100875
| | - Khalid Mahmood
- Institute of Polymer Chemistry and Physics
- Beijing Key Laboratory of Energy Conversion and Storage Materials
- College of Chemistry
- Beijing Normal University
- Beijing 100875
| | - Zhengping Liu
- Institute of Polymer Chemistry and Physics
- Beijing Key Laboratory of Energy Conversion and Storage Materials
- College of Chemistry
- Beijing Normal University
- Beijing 100875
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29
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Hernoux-Villière A, Lévêque JM, Kärkkäinen J, Papaiconomou N, Lajunen M, Lassi U. Task-specific ionic liquid for the depolymerisation of starch-based industrial waste into high reducing sugars. Catal Today 2014. [DOI: 10.1016/j.cattod.2013.09.027] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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30
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Wang H, Gurau G, Rogers RD. Dissolution of Biomass Using Ionic Liquids. STRUCTURE AND BONDING 2014. [DOI: 10.1007/978-3-642-38619-0_3] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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31
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Abdolmaleki A, Mohamadi Z. Acidic ionic liquids catalyst in homo and graft polymerization of ε-caprolactone. Colloid Polym Sci 2013. [DOI: 10.1007/s00396-013-2941-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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32
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Guo Y, Wang X, Shen Z, Shu X, Sun R. Preparation of cellulose-graft-poly(ɛ-caprolactone) nanomicelles by homogeneous ROP in ionic liquid. Carbohydr Polym 2013; 92:77-83. [DOI: 10.1016/j.carbpol.2012.09.058] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2012] [Revised: 09/12/2012] [Accepted: 09/24/2012] [Indexed: 11/24/2022]
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33
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Radiation effects on microcrystalline cellulose in 1-butyl-3-methylimidazolium chloride ionic liquid. Carbohydr Polym 2012; 90:1629-33. [DOI: 10.1016/j.carbpol.2012.07.042] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2012] [Revised: 07/06/2012] [Accepted: 07/16/2012] [Indexed: 11/23/2022]
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34
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Arun S, Kumar KAA, Sreekala MS. Fully biodegradable potato starch composites: effect of macro and nano fiber reinforcement on mechanical, thermal and water-sorption characteristics. ACTA ACUST UNITED AC 2012. [DOI: 10.1007/s12588-012-9026-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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35
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Guo Y, Wang X, Shu X, Shen Z, Sun RC. Self-assembly and paclitaxel loading capacity of cellulose-graft-poly(lactide) nanomicelles. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:3900-3908. [PMID: 22439596 DOI: 10.1021/jf3001873] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A series of amiphiphilic cellulose-based graft copolymers (MCC-g-PLA) with various molecular factors were synthesized in ionic liquid BmimCl and characterized by FT-IR, (1)H NMR, (13)C NMR, XRD, and TGA. Their solubility in a variety of solvents was compared. The prepared MCC-g-PLA copolymers can self-assemble into spherical nanomicelles (10-50 nm) in aqueous solution. The self-assembly behaviors of the MCC-g-PLA copolymers were systematically investigated by fluorescence probe. Furthermore, the hydrophobic antitumor drug paclitaxel (PTX) was successfully encapsulated into the MCC-g-PLA micelles. The drug encapsulation efficiency and loading content were found to be as high as 89.30% (w/w) and 4.97%, respectively. Results in this study not only suggest a promising cellulose-based antitumor drug carrier but also provide information for property-directed synthesis of the cellulose graft PLA copolymers.
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Affiliation(s)
- Yanzhu Guo
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China
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36
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Abstract
The modified starch was prepared by degradation starch with glutaraldehyde. The process conditions of degradation and modification starch were investigation. The result shows that the degradation starch was obtained through 22.5 g cornstarch and 1g ammonium persulfate (APS) in 127.5 g water at 95°C for 1h, and the modified starch was obtained by aldolization reaction of degradation starch and 4 mol/AGU glutaraldehyde at 85°C for 5h. The modified starch can be used as leather tannage. The shrink temperature (Ts) of tanned leather can be increase from 41.6 °C to 85.2°C. It may replace chrome tannage and decrease the pollution produced in chrome tanning processing. Meanwhile, the chemistry structure of modified starch was characterized by FTIR, 1H-NMR, 13C-NMR
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37
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Lv S, Gong R, Yan X, Hou M, Zhang G. Structure and properties of graft copolymer of starch and resorcinol synthesized using HRP. J Appl Polym Sci 2011. [DOI: 10.1002/app.35686] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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38
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Wilpiszewska K, Spychaj T. Ionic liquids: Media for starch dissolution, plasticization and modification. Carbohydr Polym 2011. [DOI: 10.1016/j.carbpol.2011.06.001] [Citation(s) in RCA: 126] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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39
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40
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Wu Q, Chen X, Zhang Y, Wu Z, Huang Y. Tough Thermoplastic Starch Modified with Polyurethane Microparticles: The Effects of Processing Temperatures. Ind Eng Chem Res 2011. [DOI: 10.1021/ie101149q] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Qiangxian Wu
- Green Polymer Lab, Polymer Science Department, College of Chemistry, Huazhong Normal University, Luoyu Road 152, Wuhan City, Hubei Province 430079, People’s Republic of China
| | - Xiaoxia Chen
- Green Polymer Lab, Polymer Science Department, College of Chemistry, Huazhong Normal University, Luoyu Road 152, Wuhan City, Hubei Province 430079, People’s Republic of China
| | - Yu Zhang
- Green Polymer Lab, Polymer Science Department, College of Chemistry, Huazhong Normal University, Luoyu Road 152, Wuhan City, Hubei Province 430079, People’s Republic of China
| | - Zhengshun Wu
- Green Polymer Lab, Polymer Science Department, College of Chemistry, Huazhong Normal University, Luoyu Road 152, Wuhan City, Hubei Province 430079, People’s Republic of China
| | - Yan Huang
- Green Polymer Lab, Polymer Science Department, College of Chemistry, Huazhong Normal University, Luoyu Road 152, Wuhan City, Hubei Province 430079, People’s Republic of China
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Dabirmanesh B, Daneshjou S, Sepahi AA, Ranjbar B, Khavari-Nejad RA, Gill P, Heydari A, Khajeh K. Effect of ionic liquids on the structure, stability and activity of two related α-amylases. Int J Biol Macromol 2011; 48:93-7. [DOI: 10.1016/j.ijbiomac.2010.10.001] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2010] [Revised: 10/03/2010] [Accepted: 10/04/2010] [Indexed: 11/25/2022]
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42
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43
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Ring-opening polymerization of ε-caprolactone initiated by heteropolyacid. JOURNAL OF POLYMER RESEARCH 2009. [DOI: 10.1007/s10965-009-9376-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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44
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45
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Namazi H, Dadkhah A. Surface modification of starch nanocrystals through ring-opening polymerization of ε-caprolactone and investigation of their microstructures. J Appl Polym Sci 2008. [DOI: 10.1002/app.28821] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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46
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Mallakpour S, Rafiee Z. Ionic liquids as novel and green media for clean synthesis of soluble aromatic-aliphatic poly(amide-ester)s containing hydroxynaphthalene urazole moiety. POLYM ADVAN TECHNOL 2008. [DOI: 10.1002/pat.1069] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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