1
|
Liu F, Liu Y, Guo Y, Liu J, Dong J, Wang T, Hao D, Zhang Y. FTIR determination of the degree of molar substitution for hydroxypropyl chitosan. Carbohydr Polym 2024; 339:122229. [PMID: 38823904 DOI: 10.1016/j.carbpol.2024.122229] [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: 02/26/2024] [Revised: 04/28/2024] [Accepted: 04/30/2024] [Indexed: 06/03/2024]
Abstract
We developed and validated a novel Fourier transform infrared (FTIR) method to determine the degree of molar substitution (MS) for hydroxypropyl chitosan (HPCS) using nuclear magnetic resonance (1H NMR) as a reference, and investigated the factors influencing the MS assay. Through extensive screening of integration methods for candidate bands in the FTIR spectrum of HPCS using 20 HPCS samples with degrees of acetylation (DA) ranging from 0.003 to 0.139, we found that when using band area at 2970 cm-1 as a probe integral, the MS values obtained via the 1H NMR method exhibited linear correlations (R2 > 0.98) with at least 16 integral ratios derived from their FTIR spectra. The optimal reference bands with high reliability are located at 3440 cm-1 and 1415 cm-1, with R2 exceeding 0.99 and a MS range of 0.17-1.92. The band at 2875 cm-1 is less affected by the trace moisture present in HPCS samples than the others. The results of the method validation demonstrated a mean recovery of 98.9 ± 2.8 % and an RSD below 10 %, suggesting a simple, robust, and highly accurate and precise method. This method could be extendable for the determination of the MS of insoluble HPCS derivatives and other hydroxypropylated polysaccharides.
Collapse
Affiliation(s)
- Fang Liu
- State Key Laboratory Base of Eco-chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, No.53 Zhengzhou Road, Qingdao 266042, China
| | - Yinchun Liu
- State Key Laboratory Base of Eco-chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, No.53 Zhengzhou Road, Qingdao 266042, China
| | - Youli Guo
- Yantai Tianlu Food Co., Ltd., No. 2 Fenhe Road, Yantai 264000, China
| | - Jianrui Liu
- State Key Laboratory Base of Eco-chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, No.53 Zhengzhou Road, Qingdao 266042, China
| | - Jingwen Dong
- State Key Laboratory Base of Eco-chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, No.53 Zhengzhou Road, Qingdao 266042, China
| | - Tengbin Wang
- State Key Laboratory Base of Eco-chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, No.53 Zhengzhou Road, Qingdao 266042, China
| | - Di Hao
- State Key Laboratory Base of Eco-chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, No.53 Zhengzhou Road, Qingdao 266042, China
| | - Yongqin Zhang
- State Key Laboratory Base of Eco-chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, No.53 Zhengzhou Road, Qingdao 266042, China.
| |
Collapse
|
2
|
Utilization of TBDMS chitosan for synthesis of photoactive chitosan derivatives and application in photografting on ophthalmic lens material. REACT FUNCT POLYM 2020. [DOI: 10.1016/j.reactfunctpolym.2020.104600] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
3
|
Wang J, Hu H, Yang Z, Wei J, Li J. IPN hydrogel nanocomposites based on agarose and ZnO with antifouling and bactericidal properties. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 61:376-86. [PMID: 26838864 DOI: 10.1016/j.msec.2015.12.023] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Revised: 11/10/2015] [Accepted: 12/10/2015] [Indexed: 12/28/2022]
Abstract
Nanocomposite hydrogels with interpenetrating polymer network (IPN) structure based on poly(ethylene glycol) methyl ether methacrylate modified ZnO (ZnO-PEGMA) and 4-azidobenzoic agarose (AG-N3) were prepared by a one-pot strategy under UV irradiation. The hydrogels exhibited a highly macroporous spongelike structure, and the pore size decreased with the increase of the ZnO-PEGMA content. Due to the entanglement and favorable interactions between the two crosslinked networks, the IPN hydrogels exhibited excellent mechanical strength and light transmittance. The maximum compressive and tensile strengths of the IPN hydrogels reached 24.8 and 1.98 MPa respectively. The transparent IPN hydrogels transmitted more than 85% of visible light at all wavelengths (400-800 nm). The IPN hydrogels exhibited anti-adhesive property towards Gram-negative Escherichia coli (E. coli) and Gram-positive Staphylococcus aureus (S. aureus), and the bactericidal activity increased with the ZnO-PEGMA content. The incorporation of ZnO-PEGMA did not reduce the biocompatibility of the IPN hydrogels and all the IPN nanocomposites showed negligible cytotoxicity. The present study not only provided a facile method for preparing hydrogel nanocomposites with IPN structure but also developed a new hydrogel material which might be an excellent candidate for wound dressings.
Collapse
Affiliation(s)
- Jingjing Wang
- School of Materials Engineering, Key Laboratory for Ecological-Environment Materials of Jiangsu Province, Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng 224051, China.
| | - Hongkai Hu
- School of Materials Engineering, Key Laboratory for Ecological-Environment Materials of Jiangsu Province, Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng 224051, China
| | - Zhonglin Yang
- School of Materials Engineering, Key Laboratory for Ecological-Environment Materials of Jiangsu Province, Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng 224051, China
| | - Jun Wei
- School of Materials Engineering, Key Laboratory for Ecological-Environment Materials of Jiangsu Province, Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng 224051, China
| | - Juan Li
- School of Materials Engineering, Key Laboratory for Ecological-Environment Materials of Jiangsu Province, Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng 224051, China
| |
Collapse
|
4
|
Miksa B. Recent progress in designing shell cross-linked polymer capsules for drug delivery. RSC Adv 2015. [DOI: 10.1039/c5ra12882j] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
This tutorial review highlights the progress made during recent years in the development of the shell cross-linked (SCL) polymer nanocapsules and the impact of the most important scientific ideas on this field of knowledge.
Collapse
Affiliation(s)
- Beata Miksa
- Centre of Molecular and Macromolecular Studies Polish Academy of Science
- Lodz
- Poland
| |
Collapse
|
5
|
Wang M, Jia YX, Yao TT, Wang KK. The endowment of monovalent selectivity to cation exchange membrane by photo-induced covalent immobilization and self-crosslinking of chitosan. J Memb Sci 2013. [DOI: 10.1016/j.memsci.2013.04.027] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
6
|
Yi Y, Xu S, Sun H, Chang D, Yin Y, Zheng H, Xu H, Lou Y. Gelation of photocrosslinkable carboxymethyl chitosan and its application in controlled release of pesticide. Carbohydr Polym 2011. [DOI: 10.1016/j.carbpol.2011.05.057] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
7
|
Tsai WB, Chen YR, Liu HL, Lai JY. Fabrication of UV-crosslinked chitosan scaffolds with conjugation of RGD peptides for bone tissue engineering. Carbohydr Polym 2011. [DOI: 10.1016/j.carbpol.2011.02.003] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
8
|
Lu G, Ling K, Zhao P, Xu Z, Deng C, Zheng H, Huang J, Chen J. A novel in situ-formed hydrogel wound dressing by the photocross-linking of a chitosan derivative. Wound Repair Regen 2010; 18:70-9. [DOI: 10.1111/j.1524-475x.2009.00557.x] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
9
|
Yin Y, Xu S, Chang D, Zheng H, Li J, Liu X, Xu P, Xiong F. One-pot synthesis of biopolymeric hollow nanospheres by photocrosslinking. Chem Commun (Camb) 2010; 46:8222-4. [DOI: 10.1039/c0cc03129a] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
10
|
Yin Y, Lv X, Tu H, Xu S, Zheng H. Preparation and swelling kinetics of pH-sensitive photocrosslinked hydrogel based on carboxymethyl chitosan. JOURNAL OF POLYMER RESEARCH 2009. [DOI: 10.1007/s10965-009-9333-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|