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Hou M, HongLei, Zhou X, Du G, Pizzi A, Essawy H, Zhang Q, Wu D, Yan R, Xi X. Preparation and characterization on the eco-friendly corn starch based adhesive of with salient water resistance, mildew resistance. Int J Biol Macromol 2024; 269:132043. [PMID: 38702005 DOI: 10.1016/j.ijbiomac.2024.132043] [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: 02/23/2024] [Revised: 04/02/2024] [Accepted: 04/30/2024] [Indexed: 05/06/2024]
Abstract
Starch adhesive is a commonly used bonding glue that is sustainable, formaldehyde-free and biodegradable. However, there are obviously some problems related to its high viscosity, poor water and mildew resistance. Hence, exploring a starch-based adhesive with good properties that satisfies the requirements of wood processing presents the context of the current research. Thus, corn starch was used as raw material to form oxidized starch (OCS) via oxidation using sodium periodate, it was reacted with a synthesis polyurea compound that prepared from hexanediamine-urea (HU) obtained by deamination to yield a oxidized starch-hexanediamine-urea adhesive (denoted hereafter as OCSHU). The oxidation process was optimized in terms of oxidant concentration, reaction time and temperature. Furthermore, the impact of HU addition on the mechanical properties of the adhesive was explored. Results indicate adhesive exhibited outstanding shear strength, when 13 % of NaIO4 was used as an oxidant to treat starch at 55 °C for 24 h, and involved in a subsequent reaction with 40 % of HU. The dry shear strength, 24 h cold water strength, 3 h hot water strength and 3 h boiling water strength are 1.84, 1.50, 1.32, and 1.31 MPa. Meantime, OCSHU adhesive solution revealed good storage stability whereas cured resin exhibited mildew resistance. The developed adhesive is a simple and green biomass wood adhesive.
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Affiliation(s)
- Minghui Hou
- Yunnan Key Laboratory of Wood Adhesives and Glued Products, College of Material science and Chemistry Engineering, Southwest Forestry University, 650224 Kunming, China
| | - HongLei
- School of Chemistry and Material Engineering, Zhejiang A&F University, 311300 Hangzhou, China.
| | - Xiaojian Zhou
- Yunnan Key Laboratory of Wood Adhesives and Glued Products, College of Material science and Chemistry Engineering, Southwest Forestry University, 650224 Kunming, China
| | - Guanben Du
- Yunnan Key Laboratory of Wood Adhesives and Glued Products, College of Material science and Chemistry Engineering, Southwest Forestry University, 650224 Kunming, China
| | - Antonio Pizzi
- LERMAB, University of Lorraine, 88000 Epinal, France
| | - Hisham Essawy
- Department of Polymers and Pigments, National Research Centre, 12622 Dokki, Cairo, Egypt
| | - Qianyu Zhang
- Yunnan Key Laboratory of Wood Adhesives and Glued Products, College of Material science and Chemistry Engineering, Southwest Forestry University, 650224 Kunming, China
| | - Dan Wu
- Yunnan Key Laboratory of Wood Adhesives and Glued Products, College of Material science and Chemistry Engineering, Southwest Forestry University, 650224 Kunming, China
| | - Ranjun Yan
- Yunnan Key Laboratory of Wood Adhesives and Glued Products, College of Material science and Chemistry Engineering, Southwest Forestry University, 650224 Kunming, China
| | - Xuedong Xi
- Yunnan Key Laboratory of Wood Adhesives and Glued Products, College of Material science and Chemistry Engineering, Southwest Forestry University, 650224 Kunming, China.
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Ravishankar K, Km S, Sreekumar S, Sivan S, Kiran MS, Lobo NP, Jaisankar SN, Raghavachari D. Microwave-assisted synthesis of crosslinked ureido chitosan for hemostatic applications. Int J Biol Macromol 2024; 260:129648. [PMID: 38246465 DOI: 10.1016/j.ijbiomac.2024.129648] [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: 08/04/2023] [Revised: 01/15/2024] [Accepted: 01/18/2024] [Indexed: 01/23/2024]
Abstract
In this study, we present a facile method for introducing hydrophilic ureido groups (NH2-CO-NH-) into chitosan using a microwave-assisted reaction with molten urea, with the aim of enhancing chitosan's interaction with blood components for improved hemostasis. The formation of the ureido groups through nucleophilic addition reaction between the amine groups in chitosan and in situ generated isocyanic acid was confirmed by FTIR, CP/TOSS 13C NMR, and CP/MAS 15N NMR spectroscopic techniques. However, in stark contrast to the glucans, the said modification introduced extensive crosslinking in chitosan. Spectroscopic studies identified these crosslinks as carbamate bridges (-NH-COO-), which were likely formed by the reaction between the ureido groups and hydroxyl groups of adjacent chains through an isocyanate intermediate. These carbamate bridges improved ureido chitosan's environmental stability, making it particularly resistant to changes in pH and temperature. In comparison to chitosan, the crosslinked ureido chitosan synthesized here exhibited good biocompatibility and cell adhesion, rapidly arrested the bleeding in a punctured artery with minimal hemolysis, and induced early activation and aggregation of platelets. These properties render it an invaluable material for applications in hemostasis, particularly in scenarios that necessitate stability against pH variations and degradation.
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Affiliation(s)
- Kartik Ravishankar
- Polymer Science and Technology Division, CSIR-Central Leather Research Institute (CSIR-CLRI), Adyar, Chennai 600 020, Tamil Nadu, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, Uttar Pradesh, India.
| | - Shelly Km
- Department of Chemistry, Indian Institute of Technology Madras (IIT Madras), Chennai 600 036, Tamil Nadu, India
| | - Sreelekshmi Sreekumar
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, Uttar Pradesh, India; Biological Materials Laboratory, CSIR-Central Leather Research Institute (CSIR-CLRI), Adyar, Chennai 600 020, Tamil Nadu, India
| | - Sisira Sivan
- Polymer Science and Technology Division, CSIR-Central Leather Research Institute (CSIR-CLRI), Adyar, Chennai 600 020, Tamil Nadu, India
| | - Manikantan Syamala Kiran
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, Uttar Pradesh, India; Biological Materials Laboratory, CSIR-Central Leather Research Institute (CSIR-CLRI), Adyar, Chennai 600 020, Tamil Nadu, India
| | - Nitin Prakash Lobo
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, Uttar Pradesh, India; Centre for Analysis, Testing, Evaluation& Reporting Services (CATERS), CSIR-Central Leather Research Institute (CSIR-CLRI), Adyar, Chennai 600 020, Tamil Nadu, India
| | - Sellamuthu N Jaisankar
- Polymer Science and Technology Division, CSIR-Central Leather Research Institute (CSIR-CLRI), Adyar, Chennai 600 020, Tamil Nadu, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, Uttar Pradesh, India.
| | - Dhamodharan Raghavachari
- Department of Chemistry, Indian Institute of Technology Madras (IIT Madras), Chennai 600 036, Tamil Nadu, India
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Zhang B, Chen X, Pizzi A, Petrissans M, Dumarcay S, Petrissans A, Zhou X, Du G, Colin B, Xi X. Highly Branched Tannin-Tris(2-aminoethyl)amine-Urea Wood Adhesives. Polymers (Basel) 2023; 15:polym15040890. [PMID: 36850174 PMCID: PMC9960572 DOI: 10.3390/polym15040890] [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: 01/26/2023] [Revised: 02/04/2023] [Accepted: 02/08/2023] [Indexed: 02/16/2023] Open
Abstract
Condensed tannin copolymerized with hyperbranched tris(2-aminoethyl)amine-urea formed by amine-amido deamination yields a particleboard thermosetting adhesive without any aldehydes satisfying the requirements of relevant standards for the particleboard internal bond strength. The tannin-triamine-urea cures well at 180 °C, a relatively low temperature for today's particleboard hot pressing. As aldehydes were not used, the formaldehyde emission was found to be zero, not even in traces due to the heating of wood. The effect is ascribed to the presence of many reactive sites, such as amide, amino, and phenolic groups belonging to the three reagents used. The tannin appears to function as an additional cross-linking agent, almost a nucleating agent, for the triamine-urea hyperbranched oligomers. Chemical analysis by MALDI ToF and 13C NMR has shown that the predominant cross-linking reaction is that of the substitution of the tannin phenolic hydroxyls by the amino groups of the triamine. The reaction of tannin with the still-free amide groups of urea is rather rare, but it may occur with the rarer tannin flavonoid units in which the heterocyclic ring is opened. Due to the temperature gradient between the surfaces and the board core in the particleboard during hot pressing, the type and the relative balance of covalent and ionic bonds in the resin structure may differ in the surfaces and the board core.
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Affiliation(s)
- Bengang Zhang
- LERMAB, IUT Hubert Curien, University of Lorraine, 7 rue Fusillés Résistance, 88000 Epinal, France
| | - Xinyi Chen
- LERMAB-ENSTIB, University of Lorraine, 27 rue Philippe Seguin, 88000 Epinal, France
- Yunnan Key Laboratory of Wood Adhesives and Glue Products, College of Material Science and Engineering, Southwest Forestry University, Kunming 650224, China
| | - Antonio Pizzi
- LERMAB-ENSTIB, University of Lorraine, 27 rue Philippe Seguin, 88000 Epinal, France
- Correspondence:
| | - Mathieu Petrissans
- LERMAB, IUT Hubert Curien, University of Lorraine, 7 rue Fusillés Résistance, 88000 Epinal, France
| | - Stephane Dumarcay
- LERMAB, Faculté des Sciences, University of Lorraine, Blvd. des Aiguillettes, 54000 Nancy, France
| | - Anelie Petrissans
- LERMAB, IUT Hubert Curien, University of Lorraine, 7 rue Fusillés Résistance, 88000 Epinal, France
| | - Xiaojian Zhou
- Yunnan Key Laboratory of Wood Adhesives and Glue Products, College of Material Science and Engineering, Southwest Forestry University, Kunming 650224, China
| | - Guanben Du
- Yunnan Key Laboratory of Wood Adhesives and Glue Products, College of Material Science and Engineering, Southwest Forestry University, Kunming 650224, China
| | - Baptiste Colin
- LERMAB, IUT Hubert Curien, University of Lorraine, 7 rue Fusillés Résistance, 88000 Epinal, France
| | - Xuedong Xi
- Yunnan Key Laboratory of Wood Adhesives and Glue Products, College of Material Science and Engineering, Southwest Forestry University, Kunming 650224, China
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Xie K, Tang D, Zhang G. A Non‐isocyanate Strategy towards Polyurethane Vitrimers from Alkylene Bisurea and Epoxide through Eutectic‐Assisted Melting. MACROMOL CHEM PHYS 2022. [DOI: 10.1002/macp.202100452] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Kangzhou Xie
- Department of Polymer Materials Science and Engineering South China University of Technology 381 Wushan Road Guangzhou 510640 PR China
| | - Donglin Tang
- Department of Polymer Materials Science and Engineering South China University of Technology 381 Wushan Road Guangzhou 510640 PR China
- Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates (South, China University of Technology) Guangzhou 510640 PR China
- Key Laboratory of Polymer Processing Engineering (South China University of Technology) Ministry of Education Guangzhou 510640 PR China
| | - Guangzhao Zhang
- Department of Polymer Materials Science and Engineering South China University of Technology 381 Wushan Road Guangzhou 510640 PR China
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