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Fengler C, Spange S, Sommer M, Wilhelm M. Synthesis of Superabsorbent Poly(vinylamine) Core–Shell Particles Monitored by Time-Domain NMR. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c02008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christian Fengler
- Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology, Engesserstr. 18, 76131 Karlsruhe, Germany
| | - Stefan Spange
- Institute for Chemistry, Polymer Chemistry, Chemnitz University of Technology, Straße der Nationen 62, 09111 Chemnitz, Germany
| | - Michael Sommer
- Institute for Chemistry, Polymer Chemistry, Chemnitz University of Technology, Straße der Nationen 62, 09111 Chemnitz, Germany
| | - Manfred Wilhelm
- Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology, Engesserstr. 18, 76131 Karlsruhe, Germany
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Du Y, Zeng Q, Yuan L, He L. Post-polymerization modification based on reactive fluorinated polymers reaction. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2021. [DOI: 10.1080/10601325.2021.1903328] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Yiying Du
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, China
| | - Qiugui Zeng
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, China
| | - Ling Yuan
- Key Laboratory of Advanced Technology of Materials (Ministry of Education of China), School of Materials Science and Engineering, Superconductivity and New Energy R&D Center, Southwest Jiaotong University, Chengdu, China
| | - Lirong He
- Polymer Research Insititute, Sichuan University, Chengdu, China
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Kim JS, Kim DH, Lee YS. The Influence of Monomer Composition and Surface-CrossLinking Condition on Biodegradation and Gel Strength of Super Absorbent Polymer. Polymers (Basel) 2021; 13:polym13040663. [PMID: 33672256 PMCID: PMC7927004 DOI: 10.3390/polym13040663] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 02/11/2021] [Accepted: 02/16/2021] [Indexed: 11/28/2022] Open
Abstract
In this study, a superabsorbent polymer (SAP) comprising poly (IA-co-cellulose-co-VSA-co-AA; ICVA) core-SAP (CSAP) was synthesized through radical polymerization using itaconic acid (IA), acrylic acid (AA), cellulose, and vinyl sulfonic acid (VSA) as monomers. The absorption performances and relative biodegradability of various compositions prepared by adjusting the amounts of cellulose and VSA with constant IA and AA content were compared. Increasing the cellulose content in CSAP contributed to improved biodegradation of the surface-crosslinked SAP (SSAP) and gel strength, although the free absorbency (FA) and centrifuge retention capacity (CRC) decreased. Increasing the VSA content resulted in strong anionicity, which enables the absorption of large amounts of water. Surface-crosslinking technology was applied to the CSAP synthesized with the optimal composition ratio to increase its absorption performance and gel strength. Improved performance of the synthesized SSAP (a CRC of 30.4 g/g, absorbency under load (AUL) of 23.3 g/g, and permeability of 55 s) was achieved by selecting the optimal surface-crosslinking treatment time and the amount of distilled water in the surface-crosslinking solution: as the latter was increased in the surface-crosslinking solution, the AUL and permeability of the SSAP were improved, and its biodegradability was found to be 54% compared to the 100% biodegradable cellulose hydrogel in the control group.
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Affiliation(s)
- Jung Soo Kim
- Department of Packaging, Yonsei University, Wonju 26493, Korea;
- Human Convergence Technology R&D Departments, Korea Institute of Industrial Technology (KITECH), Ansan 15588, Korea;
| | - Dong Hyun Kim
- Human Convergence Technology R&D Departments, Korea Institute of Industrial Technology (KITECH), Ansan 15588, Korea;
| | - Youn Suk Lee
- Department of Packaging, Yonsei University, Wonju 26493, Korea;
- Correspondence: ; Tel.: +82-33-760-2395
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Mitrea L, Călinoiu LF, Martău GA, Szabo K, Teleky BE, Mureșan V, Rusu AV, Socol CT, Vodnar DC. Poly(vinyl alcohol)-Based Biofilms Plasticized with Polyols and Colored with Pigments Extracted from Tomato By-Products. Polymers (Basel) 2020; 12:E532. [PMID: 32131384 PMCID: PMC7182853 DOI: 10.3390/polym12030532] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 02/20/2020] [Accepted: 02/27/2020] [Indexed: 01/19/2023] Open
Abstract
In the current work the physicochemical features of poly(vinyl alcohol) (PVOH) biofilms, enriched with eco-friendly polyols and with carotenoid-rich extracts, were investigated. The polyols, such as glycerol (Gly), 1,3-propanediol (PDO), and 2,3-butanediol (BDO) were used as plasticizers and the tomato-based pigments (TP) as coloring agents. The outcomes showed that β-carotene was the major carotenoid in the TP (1.605 mg β-carotene/100 DW), which imprinted the orange color to the biofilms. The flow behavior indicated that with the increase of shear rate the viscosity of biofilm solutions also increased until 50 s-1, reaching values at 37 °C of approximately 9 ± 0.5 mPa·s for PVOH, and for PVOH+TP, 14 ± 0.5 mPa·s in combination with Gly, PDO, and BDO. The weight, thickness, and density of samples increased with the addition of polyols and TP. Biofilms with TP had lower transparency values compared with control biofilms (without vegetal pigments). The presence of BDO, especially, but also of PDO and glycerol in biofilms created strong bonds within the PVOH matrix by increasing their mechanical resistance. The novelty of the present approach relies on the replacement of synthetic colorants with natural pigments derived from agro-industrial by-products, and the use of a combination of biodegradable polymers and polyols, as an integrated solution for packaging application in the bioplastic industry.
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Affiliation(s)
- Laura Mitrea
- Institute of Life Sciences, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Cluj-Napoca, Romania; (L.M.); (L.-F.C.); (G.-A.M.); (K.S.); (B.-E.T.)
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Clu-Napoca, Romania;
| | - Lavinia-Florina Călinoiu
- Institute of Life Sciences, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Cluj-Napoca, Romania; (L.M.); (L.-F.C.); (G.-A.M.); (K.S.); (B.-E.T.)
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Clu-Napoca, Romania;
| | - Gheorghe-Adrian Martău
- Institute of Life Sciences, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Cluj-Napoca, Romania; (L.M.); (L.-F.C.); (G.-A.M.); (K.S.); (B.-E.T.)
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Clu-Napoca, Romania;
| | - Katalin Szabo
- Institute of Life Sciences, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Cluj-Napoca, Romania; (L.M.); (L.-F.C.); (G.-A.M.); (K.S.); (B.-E.T.)
| | - Bernadette-Emoke Teleky
- Institute of Life Sciences, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Cluj-Napoca, Romania; (L.M.); (L.-F.C.); (G.-A.M.); (K.S.); (B.-E.T.)
| | - Vlad Mureșan
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Clu-Napoca, Romania;
| | - Alexandru-Vasile Rusu
- CENCIRA Agrofood Research and Innovation Centre, Ion Meșter 6, 400650 Cluj-Napoca, Romania; (A.-V.R.); (C.-T.S.)
| | - Claudia-Terezia Socol
- CENCIRA Agrofood Research and Innovation Centre, Ion Meșter 6, 400650 Cluj-Napoca, Romania; (A.-V.R.); (C.-T.S.)
| | - Dan-Cristian Vodnar
- Institute of Life Sciences, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Cluj-Napoca, Romania; (L.M.); (L.-F.C.); (G.-A.M.); (K.S.); (B.-E.T.)
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Clu-Napoca, Romania;
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