1
|
Sole R, Buranello C, Di Michele A, Beghetto V. Boosting physical-mechanical properties of adipic acid/chitosan films by DMTMM cross-linking. Int J Biol Macromol 2022; 209:2009-19. [PMID: 35513101 DOI: 10.1016/j.ijbiomac.2022.04.181] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 04/20/2022] [Accepted: 04/25/2022] [Indexed: 12/26/2022]
Abstract
In this paper we present a novel strategy to easily prepare biodegradable chitosan derived films as new packaging systems. Combination of chitosan, adipic acid and 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methyl-morpholinium chloride (DMTMM) allowed to obtain high-performing cross-linked films. Biobased glycerol was employed as plasticizer. An in-depth study was performed on ten different samples in order to evaluate the role of DMTMM as cross-linking agent. Experimental data showed that 15 wt% of DMTMM enhanced moisture content and moisture uptake (10.42% and 11.11%), water vapor permeability (0.13 10-7 g m-1 h-1 Pa-1) and good UV barrier properties. Additionally, 30 wt% of DMTMM significantly increased the tensile strength of films up to 83 MPa and elongation at break values reached 39.7%. Thermogravimetric, IR, XRD and SEM analysis confirmed that physical-mechanical properties of the obtained films were considerably improved, due to cross-linking by DMTMM, demonstrating promising properties for packaging applications.
Collapse
|
2
|
Sun H, Ji Z, He Y, Wang L, Zhan J, Chen L, Zhao Y. Preparation of PAMAM modified PVDF membrane and its adsorption performance for copper ions. Environ Res 2022; 204:111943. [PMID: 34478725 DOI: 10.1016/j.envres.2021.111943] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 08/13/2021] [Accepted: 08/20/2021] [Indexed: 06/13/2023]
Abstract
As one of the main pollutants of water pollution, the potential toxicity of heavy metal ions always threatens the safety of human and nature. Therefore, how to effectively remove heavy metal ions has become an important research topic in environmental protection. In the existing research, adsorption method is outstanding from many methods because of its high adsorption efficiency and easy operation. In this study, different generations of hyperbranched polyamide-amine (PAMAM) were grafted onto PVDF membrane to obtain the membrane with high adsorption capacity for heavy metal ions. The structure and physicochemical properties of the membranes were evaluated by means of fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (FE-SEM), element analyzer and X-ray photoelectron spectroscopy (EDX). At the same time, various factors affecting the adsorption process were studied, and it was found that the adsorption behavior of copper ion (Cu2+) on the membrane conformed to the pseudo-first-order kinetic model and Langmuir isotherm model. Moreover, after comparing the adsorption effect of the modified membranes grafted with different generations of PAMAM, it was found that the membrane grafted with the third generation PAMAM had the best adsorption when the solution pH was 5, and its maximum adsorption capacity could reach 153.8 mg/g. After five adsorption-desorption cycles, its adsorption capacity can reach 72.83% of the first test, indicating that it has good recycling performance. The results show that the adsorption membrane has good application potential and research value.
Collapse
Affiliation(s)
- Heyu Sun
- State Key Laboratory of Separation Membranes and Membrane Processes/National Center for International Joint Research on Separation Membranes, School of Materials Science and Engineering, Tiangong University, Tianjin, 300387, China
| | - Zhicheng Ji
- State Key Laboratory of Separation Membranes and Membrane Processes/National Center for International Joint Research on Separation Membranes, School of Materials Science and Engineering, Tiangong University, Tianjin, 300387, China
| | - Yang He
- State Key Laboratory of Separation Membranes and Membrane Processes/National Center for International Joint Research on Separation Membranes, School of Materials Science and Engineering, Tiangong University, Tianjin, 300387, China
| | - Lianhuan Wang
- State Key Laboratory of Separation Membranes and Membrane Processes/National Center for International Joint Research on Separation Membranes, School of Materials Science and Engineering, Tiangong University, Tianjin, 300387, China
| | - Jiang Zhan
- State Key Laboratory of Separation Membranes and Membrane Processes/National Center for International Joint Research on Separation Membranes, School of Materials Science and Engineering, Tiangong University, Tianjin, 300387, China
| | - Li Chen
- State Key Laboratory of Separation Membranes and Membrane Processes/National Center for International Joint Research on Separation Membranes, School of Materials Science and Engineering, Tiangong University, Tianjin, 300387, China
| | - Yiping Zhao
- State Key Laboratory of Separation Membranes and Membrane Processes/National Center for International Joint Research on Separation Membranes, School of Materials Science and Engineering, Tiangong University, Tianjin, 300387, China.
| |
Collapse
|
3
|
Ren Y, Qin X, Barbeck M, Hou Y, Xu H, Liu L, Liu C. Mussel-Inspired Carboxymethyl Chitosan Hydrogel Coating of Titanium Alloy with Antibacterial and Bioactive Properties. Materials (Basel) 2021; 14:ma14226901. [PMID: 34832302 PMCID: PMC8624938 DOI: 10.3390/ma14226901] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/02/2021] [Accepted: 11/10/2021] [Indexed: 11/16/2022]
Abstract
Infection-related titanium implant failure rates remain exceedingly high in the clinic. Functional surface coating represents a very promising strategy to improve the antibacterial and bioactive properties of titanium alloy implants. Here, we describe a novel bioactive surface coating that consists of a mussel-inspired carboxymethyl chitosan hydrogel loaded with silver nanoparticles (AgNPs) to enhance the bioactive properties of the titanium alloy. The preparation of hydrogel is based on gallic acid grafted carboxymethyl chitosan (CMCS-GA) catalyzed by DMTMM (4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium chloride). To build a firm bonding between the hydrogel and titanium alloy plate, a polydopamine layer was introduced onto the surface of the titanium alloy. With HRP/H2O2 catalysis, CMCS-GA can simply form a firm gel layer on the titanium alloy plate through the catechol groups. The surface properties of titanium alloy were characterized by scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS), and water contact angle. Silver nanoparticles were loaded into the gel layer by in situ reduction to enhance the antibacterial properties. In vitro antibacterial and cell viability experiments showed that the AgNPs-loaded Ti-gel possesses excellent antibacterial properties and did not affect the proliferation of rabbit mesenchymal stem cells (MSCs).
Collapse
Affiliation(s)
- Yanru Ren
- Beijing Bioprocess Key Laboratory, Beijing University of Chemical Technology, Beijing 100029, China; (Y.R.); (X.Q.); (Y.H.); (H.X.)
- Institute of Material Science and Technology, Technical University of Berlin, Hardenbergstrasse 40, Sekr. BA3, 10623 Berlin, Germany;
| | - Xiaoyan Qin
- Beijing Bioprocess Key Laboratory, Beijing University of Chemical Technology, Beijing 100029, China; (Y.R.); (X.Q.); (Y.H.); (H.X.)
| | - Mike Barbeck
- Institute of Material Science and Technology, Technical University of Berlin, Hardenbergstrasse 40, Sekr. BA3, 10623 Berlin, Germany;
| | - Yi Hou
- Beijing Bioprocess Key Laboratory, Beijing University of Chemical Technology, Beijing 100029, China; (Y.R.); (X.Q.); (Y.H.); (H.X.)
| | - Haijun Xu
- Beijing Bioprocess Key Laboratory, Beijing University of Chemical Technology, Beijing 100029, China; (Y.R.); (X.Q.); (Y.H.); (H.X.)
| | - Luo Liu
- Beijing Bioprocess Key Laboratory, Beijing University of Chemical Technology, Beijing 100029, China; (Y.R.); (X.Q.); (Y.H.); (H.X.)
- Correspondence: (L.L.); (C.L.)
| | - Chaoyong Liu
- Beijing Bioprocess Key Laboratory, Beijing University of Chemical Technology, Beijing 100029, China; (Y.R.); (X.Q.); (Y.H.); (H.X.)
- Correspondence: (L.L.); (C.L.)
| |
Collapse
|
4
|
Matusiak M, Rurarz BP, Kadłubowski S, Wolszczak M, Karczmarczyk U, Maurin M, Kolesińska B, Ulański P. Synthesis and Properties of Targeted Radioisotope Carriers Based on Poly(Acrylic Acid) Nanogels. Pharmaceutics 2021; 13:1240. [PMID: 34452201 DOI: 10.3390/pharmaceutics13081240] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 08/04/2021] [Accepted: 08/06/2021] [Indexed: 12/01/2022] Open
Abstract
Radiation crosslinking was employed to obtain nanocarriers based on poly(acrylic acid)—PAA—for targeted delivery of radioactive isotopes. These nanocarriers are internally crosslinked hydrophilic macromolecules—nanogels—bearing carboxylic groups to facilitate functionalization. PAA nanogels were conjugated with an engineered bombesin-derivative—oligopeptide combined with 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetate chelating moiety, aimed to provide selective radioligand transport. 4-(4,6-Dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium (DMTMM) toluene-4-sulfonate was used as the coupling agent. After tests on a model amine—p-toluidine—both commercial and home-synthesized DOTA-bombesin were successfully coupled to the nanogels and the obtained products were characterized. The radiolabeling efficiency of nanocarriers with 177Lu, was chromatographically tested. The results provide a proof of concept for the synthesis of radiation-synthesized nanogel-based radioisotope nanocarriers for theranostic applications.
Collapse
|
5
|
Beghetto V, Gatto V, Conca S, Bardella N, Buranello C, Gasparetto G, Sole R. Development of 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methyl-morpholinium chloride cross-linked carboxymethyl cellulose films. Carbohydr Polym 2020; 249:116810. [PMID: 32933659 DOI: 10.1016/j.carbpol.2020.116810] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 07/21/2020] [Accepted: 07/21/2020] [Indexed: 11/18/2022]
Abstract
First example of the use of 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methyl-morpholinium chloride (DMTMM) as cross-linking agent for the development of carboxymethyl cellulose (CMC) films for food packaging is reported. Influence of different wt % of DMTMM and glycerol on the physical-mechanical properties of CMC films was investigated. The presence of DMTMM effectively improved moisture uptake, moisture content, water vapour permeability, water solubility of the films, oil resistance together with good biodegradability. Best compromise between high water resistance, vapour permeability and mechanical properties was accomplished with 5 wt % DMTMM and 50 wt % glycerol giving tensile strength and elongation at break of 52.25 ± 4.33 and 37.32 ± 2.04 respectively. DSC, TGA and SEM analysis further confirmed CMC cross-linking by DMTMM. All films prepared showed low opacity and high transparencies. Therefore, data reported show that DMTMM can efficiently cross-link CMC to produce films for food packaging.
Collapse
Affiliation(s)
- Valentina Beghetto
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia, Via Torino 155, 30170, Venezia, Italy; Crossing S.r.l., Viale della Repubblica 193/b, 31100, Treviso, Italy.
| | - Vanessa Gatto
- Crossing S.r.l., Viale della Repubblica 193/b, 31100, Treviso, Italy.
| | - Silvia Conca
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia, Via Torino 155, 30170, Venezia, Italy.
| | - Noemi Bardella
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia, Via Torino 155, 30170, Venezia, Italy.
| | - Chiara Buranello
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia, Via Torino 155, 30170, Venezia, Italy.
| | - Giulia Gasparetto
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia, Via Torino 155, 30170, Venezia, Italy.
| | - Roberto Sole
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia, Via Torino 155, 30170, Venezia, Italy.
| |
Collapse
|
6
|
Beghetto V, Gatto V, Conca S, Bardella N, Scrivanti A. Polyamidoamide Dendrimers and Cross-Linking Agents for Stabilized Bioenzymatic Resistant Metal-Free Bovine Collagen. Molecules 2019; 24:molecules24193611. [PMID: 31591356 PMCID: PMC6803940 DOI: 10.3390/molecules24193611] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 09/30/2019] [Accepted: 10/02/2019] [Indexed: 01/27/2023] Open
Abstract
The work reports the use of polyamidoamine dendrimers (PAMAM) and a cross-linking agent, 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide/N-hydroxysuccinimide (EDC/NHS) or 4-(4,6-dimethoxy[1,3,5]triazin-2-yl)-4-methyl-morpholinium chloride (DMTMM), for the thermal stabilization of dermal bovine collagen. The efficiency of EDC/NHS/PAMAM and DMTMM/PAMAM in the cross-linking of collagen is correlated to the increase of the collagen shrinkage temperature (Ts), measured by differential scanning calorimetry (DSC). An alternative enzymatic protocol was adopted to measure the degradability of EDC/NHS/PAMAM tanned hides; these data are correlated to the thermal stability values measured by DSC. In the presence of PAMAMs, EDC/NHS provides very high stabilization of bovine dermal collagen, giving Ts of up to 95 °C, while DMTMM achieves lower stabilization. Preliminary tanning tests carried out in best reaction conditions show that EDC/NHS/PAMAM could be an interesting, environmentally-sustainable tanning system which is completely free of metals, formaldehyde, and phenols. Two new unreported dendrimeric species were synthesized and employed.
Collapse
Affiliation(s)
- Valentina Beghetto
- Department of Molecular Sciences and Nanosystems, University Ca' Foscari Venice, Via Torino 155, 30172 Mestre (Venice), Italy.
- Crossing Ltd., Viale della Repubblica 193/b, 31100 Treviso, Italy.
| | - Vanessa Gatto
- Department of Molecular Sciences and Nanosystems, University Ca' Foscari Venice, Via Torino 155, 30172 Mestre (Venice), Italy.
- Crossing Ltd., Viale della Repubblica 193/b, 31100 Treviso, Italy.
| | - Silvia Conca
- Department of Molecular Sciences and Nanosystems, University Ca' Foscari Venice, Via Torino 155, 30172 Mestre (Venice), Italy.
| | - Noemi Bardella
- Department of Molecular Sciences and Nanosystems, University Ca' Foscari Venice, Via Torino 155, 30172 Mestre (Venice), Italy.
| | - Alberto Scrivanti
- Department of Molecular Sciences and Nanosystems, University Ca' Foscari Venice, Via Torino 155, 30172 Mestre (Venice), Italy.
| |
Collapse
|
7
|
D'Este M, Eglin D, Alini M. A systematic analysis of DMTMM vs EDC/NHS for ligation of amines to hyaluronan in water. Carbohydr Polym 2014; 108:239-46. [PMID: 24751270 DOI: 10.1016/j.carbpol.2014.02.070] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Revised: 02/19/2014] [Accepted: 02/25/2014] [Indexed: 01/20/2023]
Abstract
The activation of carboxyl groups with N-(3-dimethylaminopropyl)-N'-ethylcarbodiimide hydrochloride and N-hydroxysuccinimide (EDC/NHS) for amide formation is the standard method for amine ligation to hyaluronan (HA), and a very well established wide-ranging bioconjugation method. In this paper we compare 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium chloride (DMTMM) to EDC/NHS activation chemistry for HA ligation using an array of substrates including small, large and functional molecules. For all the substrates tested DMTMM yields were superior at parity of feed ratio. DMTMM chemistry resulted effective also in absence of pH control, which is essential for EDC/NHS conjugation. Overall our results demonstrate that DMTMM is more efficient than EDC/NHS for ligation of amines to HA and does not require accurate pH control or pH shift during the reaction to be effective. DMTMM-mediated ligation is a new promising chemical tool to synthesize HA derivatives for biomedical and pharmaceutical applications.
Collapse
Affiliation(s)
- Matteo D'Este
- AO Research Institute Davos, Davos Platz, Switzerland; Collaborative Research Partner Acute Cartilage Injury Program of AO Foundation, Davos, Switzerland.
| | - David Eglin
- AO Research Institute Davos, Davos Platz, Switzerland; Collaborative Research Partner Acute Cartilage Injury Program of AO Foundation, Davos, Switzerland
| | - Mauro Alini
- AO Research Institute Davos, Davos Platz, Switzerland; Collaborative Research Partner Acute Cartilage Injury Program of AO Foundation, Davos, Switzerland
| |
Collapse
|