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Niu K, Song K. Synthesis and Characterization of Maleic Anhydride-Methyl Methacrylate Co-Monomer Grafted Polyethylene Wax for Hot Waxed Wood Process. MATERIALS (BASEL, SWITZERLAND) 2022; 15:6962. [PMID: 36234305 PMCID: PMC9572140 DOI: 10.3390/ma15196962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 09/21/2022] [Accepted: 10/01/2022] [Indexed: 06/16/2023]
Abstract
The beeswax used in Chinese traditional hot waxed wood technology has several drawbacks, such as high price, scarce resources, and poor heat resistance. To expand the application of hot waxing technology in the field of wood decoration and protection, polyethylene wax was modified by a grafted maleic anhydride-methyl methacrylate co-monomer. A type of modified polyethylene wax with low cost, high melting point, high stability, and strong polarity suitable for hot waxed wood was prepared as a replacement for beeswax. The effects of the grafting conditions on the chemical properties, thermal properties, chemical structure, and crystallization properties of modified polyethylene wax were studied and compared to those of beeswax. The results show that maleic anhydride-methyl methacrylate co-monomer grafting can effectively improve the acid value of polyethylene wax. For the ratio of two monomers of 1/1, the total amount of monomer of 8 wt%, the amount of initiator of 2 wt%, the reaction temperature of 150 °C, and the acid value of modified polyethylene wax was consistent with that of beeswax, realizing the simulation of the main chemical properties of beeswax. The thermal stability and melting temperature of the modified polyethylene wax are significantly higher than those of beeswax, its crystal structure is similar to that of beeswax, and the cyclic anhydride groups and ester groups introduced by co-monomer grafting endow it with polar groups that play an important role in the wood hot waxing process.
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Poly(Lactic Acid)-Based Graft Copolymers: Syntheses Strategies and Improvement of Properties for Biomedical and Environmentally Friendly Applications: A Review. Molecules 2022; 27:molecules27134135. [PMID: 35807380 PMCID: PMC9268542 DOI: 10.3390/molecules27134135] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 06/23/2022] [Accepted: 06/23/2022] [Indexed: 11/16/2022] Open
Abstract
As a potential replacement for petroleum-based plastics, biodegradable bio-based polymers such as poly(lactic acid) (PLA) have received much attention in recent years. PLA is a biodegradable polymer with major applications in packaging and medicine. Unfortunately, PLA is less flexible and has less impact resistance than petroleum-based plastics. To improve the mechanical properties of PLA, PLA-based blends are very often used, but the outcome does not meet expectations because of the non-compatibility of the polymer blends. From a chemical point of view, the use of graft copolymers as a compatibilizer with a PLA backbone bearing side chains is an interesting option for improving the compatibility of these blends, which remains challenging. This review article reports on the various graft copolymers based on a PLA backbone and their syntheses following two chemical strategies: the synthesis and polymerization of modified lactide or direct chemical post-polymerization modification of PLA. The main applications of these PLA graft copolymers in the environmental and biomedical fields are presented.
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Lee KI, Koo TH, Chen P, D'Lima DD. Subcutaneous toxicity of a dual ionically cross-linked atelocollagen and sodium hyaluronate gel: Rat in vivo study for biological safety evaluation of the injectable hydrogel. Toxicol Rep 2021; 8:1651-1656. [PMID: 34567979 PMCID: PMC8449164 DOI: 10.1016/j.toxrep.2021.09.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 08/29/2021] [Accepted: 09/12/2021] [Indexed: 11/30/2022] Open
Abstract
Hydrogel wound dressings are commonly used to stop bleeding and enhance healing. Hyaluronic acid and collagen are beneficial for wound healing, however, each polymer has limitations. A dual hydrogel combining the benefits of both biopolymers can be more effective for the treatment of various wound types. A composite of collagen and sodium hyaluronate did not generate significant subacute toxicity or reactivity in vivo.
Hydrogels are commonly used in wound dressing, as they retain moisture, accelerate healing, and break down necrotic tissue. This process enhances patient comfort levels while simultaneously reducing pain caused by dead tissue. The purpose of this study was to investigate the in vivo toxicity of a dual hydrogel consisting of type I atelocollagen cross-linked with sodium hyaluronate hydrogel used for wound dressing. Porcine type I atelocollagen was cross-linked with sodium hyaluronate to form the hydrogel. For subcutaneous implantation, 0.5 ml of dual hydrogel was injected into two different sites of twenty rats per group. High density polyethylene rods were implanted subcutaneously to serve as a control material. Hematological assessment, blood biochemistry, histopathological, and histological evaluations were scored and graded after 4 weeks. A bioreactivity rating was used for evaluation of subacute toxicity. Differences observed in blood chemical analysis and hematological analysis between control and test groups were within normal variations and considered unrelated to the test article implantation. No significant implantation-related lesions were observed in any of the major organs of all test animals. The overall histopathological index of the test article implantation sites was evaluated as 0. The bioreactivity rating was evaluated as non-irritant after 4-week subcutaneous implantation. Overall, these results indicate that the dual hydrogel of type I atelocollagen and sodium hyaluronate is biologically and chemically safe for clinical application as a wound dressing.
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Affiliation(s)
- Kwang-Il Lee
- Institute for Biomedical Sciences, San Diego, CA 92121, USA.,Shiley Center for Orthopaedic Research and Education at Scripps Clinic, La Jolla, CA 92037, USA
| | - Tae-Hoon Koo
- D-med, 143-48 Samseong-dong, Gangnam-gu, Seoul, 06159, Republic of Korea
| | - Peter Chen
- Institute for Biomedical Sciences, San Diego, CA 92121, USA
| | - Darryl D D'Lima
- Shiley Center for Orthopaedic Research and Education at Scripps Clinic, La Jolla, CA 92037, USA
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Ruiz-Cantu L, F Trindade G, Taresco V, Zhou Z, He Y, Burroughs L, Clark EA, Rose FRAJ, Tuck C, Hague R, Roberts CJ, Alexander M, Irvine DJ, Wildman RD. Bespoke 3D-Printed Polydrug Implants Created via Microstructural Control of Oligomers. ACS APPLIED MATERIALS & INTERFACES 2021; 13:38969-38978. [PMID: 34399054 DOI: 10.1021/acsami.1c07850] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Controlling the microstructure of materials by means of phase separation is a versatile tool for optimizing material properties. Phase separation has been exploited to fabricate intricate microstructures in many fields including cell biology, tissue engineering, optics, and electronics. The aim of this study was to use phase separation to tailor the spatial location of drugs and thereby generate release profiles of drug payload over periods ranging from 1 week to months by exploiting different mechanisms: polymer degradation, polymer diluent dissolution, and control of microstructure. To achieve this, we used drop-on-demand inkjet three-dimensional (3D) printing. We predicted the microstructure resulting from phase separation using high-throughput screening combined with a model based on the Flory-Huggins interaction parameter and were able to show that drug release from 3D-printed objects can be predicted from observations based on single drops of mixtures. We demonstrated for the first time that inkjet 3D printing yields controllable phase separation using picoliter droplets of blended photoreactive oligomers/monomers. This new understanding gives us hierarchical compositional control, from droplet to device, allowing release to be "dialled up" without manipulation of device geometry. We exemplify this approach by fabricating a biodegradable, long-term, multiactive drug delivery subdermal implant ("polyimplant") for combination therapy and personalized treatment of coronary heart disease. This is an important advance for implants that need to be delivered by cannula, where the shape is highly constrained and thus the usual geometrical freedoms associated with 3D printing cannot be easily exploited, which brings a hitherto unseen level of understanding to emergent material properties of 3D printing.
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Affiliation(s)
- Laura Ruiz-Cantu
- Centre for Additive Manufacturing, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, U.K
| | | | - Vincenzo Taresco
- School of Chemistry, University of Nottingham, Nottingham NG7 2RD, U.K
| | - Zuoxin Zhou
- Centre for Additive Manufacturing, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, U.K
| | - Yinfeng He
- Centre for Additive Manufacturing, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, U.K
| | | | - Elizabeth A Clark
- Centre for Additive Manufacturing, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, U.K
| | | | - Christopher Tuck
- Centre for Additive Manufacturing, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, U.K
| | - Richard Hague
- Centre for Additive Manufacturing, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, U.K
| | - Clive J Roberts
- School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, U.K
| | - Morgan Alexander
- School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, U.K
| | - Derek J Irvine
- Centre for Additive Manufacturing, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, U.K
| | - Ricky D Wildman
- Centre for Additive Manufacturing, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, U.K
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Liu J, Liu Y, Guo Z, Chen X, Li Z, Xu Y, Wang Y, Zhao J. Development of On-Line Solid Phase Extraction (SPE) Coupled with High-Performance Liquid Chromatography (HPLC) for the Determination of Phenols in River Water. ANAL LETT 2020. [DOI: 10.1080/00032719.2020.1844224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Jie Liu
- College of Chemistry and Material Science, Northwest University, Xi'an, China
| | - Yufeng Liu
- College of Chemistry and Material Science, Northwest University, Xi'an, China
| | - Zhian Guo
- College of Chemistry and Material Science, Northwest University, Xi'an, China
| | - Xiaomei Chen
- College of Chemistry and Material Science, Northwest University, Xi'an, China
| | - Zhiqiang Li
- College of Chemistry and Material Science, Northwest University, Xi'an, China
| | - Yidong Xu
- College of Chemistry and Material Science, Northwest University, Xi'an, China
| | - Yi Wang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, China
| | - Jingchan Zhao
- College of Chemistry and Material Science, Northwest University, Xi'an, China
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Song X, Bian Z, Hui Y, Wang H, Liu F, Yu S. Zn-Acetate-Containing ionic liquid as highly active catalyst for fast and mild methanolysis of Poly(lactic acid). Polym Degrad Stab 2019. [DOI: 10.1016/j.polymdegradstab.2019.108937] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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7
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Engineering antimicrobial and biocompatible electrospun PLGA fibrous membranes by irradiation grafting polyvinylpyrrolidone and periodate. Colloids Surf B Biointerfaces 2019; 181:918-926. [DOI: 10.1016/j.colsurfb.2019.06.059] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 06/16/2019] [Accepted: 06/25/2019] [Indexed: 12/24/2022]
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8
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Liavitskaya T, Birx L, Vyazovkin S. Thermal Stability of Malonic Acid Dissolved in Poly(vinylpyrrolidone) and Other Polymeric Matrices. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b00516] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tatsiana Liavitskaya
- Department of Chemistry, University of Alabama at Birmingham, 901 S. 14th Street, Birmingham, Alabama 35294, United States
| | - Lily Birx
- Department of Chemistry, University of Alabama at Birmingham, 901 S. 14th Street, Birmingham, Alabama 35294, United States
| | - Sergey Vyazovkin
- Department of Chemistry, University of Alabama at Birmingham, 901 S. 14th Street, Birmingham, Alabama 35294, United States
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Stankevich KS, Danilenko NV, Gadirov RM, Goreninskii SI, Tverdokhlebov SI, Filimonov VD. A new approach for the immobilization of poly(acrylic) acid as a chemically reactive cross-linker on the surface of poly(lactic) acid-based biomaterials. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 71:862-869. [DOI: 10.1016/j.msec.2016.10.078] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 10/17/2016] [Accepted: 10/30/2016] [Indexed: 11/29/2022]
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10
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In-situ formation of silver nanoparticles on poly (lactic acid) film by γ-radiation induced grafting of N-vinyl pyrrolidone. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 63:142-9. [DOI: 10.1016/j.msec.2016.01.077] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Revised: 12/14/2015] [Accepted: 01/27/2016] [Indexed: 11/18/2022]
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11
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Ninaya Z, Hamid ZA, Ahmad Z, Jaafar M, Yahaya B. Development and Evaluation of Surface Modified Poly (lactic acid) Microsphere via Irradiation Techniques for Drug Delivery System. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.proche.2016.03.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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12
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Mao H, Ji C, Liu M, Sun Y, Liu D, Wu S, Zhang Y, Song XM. Hydrophilic polymer/polypyrrole/graphene oxide nanosheets with different performances in electrocatalytic applications to simultaneously determine dopamine and ascorbic acid. RSC Adv 2016. [DOI: 10.1039/c6ra23341d] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Hydrophilic polymers functionalized polypyrrole/graphene oxide nanosheets were successfully synthesized and presented different performance for simultaneous determination to DA and AA.
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Affiliation(s)
- Hui Mao
- Liaoning Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials
- College of Chemistry
- Liaoning University
- Shenyang 110036
- China
| | - Chunguang Ji
- Liaoning Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials
- College of Chemistry
- Liaoning University
- Shenyang 110036
- China
| | - Meihong Liu
- Liaoning Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials
- College of Chemistry
- Liaoning University
- Shenyang 110036
- China
| | - Ying Sun
- Liaoning Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials
- College of Chemistry
- Liaoning University
- Shenyang 110036
- China
| | - Daliang Liu
- Liaoning Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials
- College of Chemistry
- Liaoning University
- Shenyang 110036
- China
| | - Shuyao Wu
- Liaoning Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials
- College of Chemistry
- Liaoning University
- Shenyang 110036
- China
| | - Yu Zhang
- Liaoning Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials
- College of Chemistry
- Liaoning University
- Shenyang 110036
- China
| | - Xi-Ming Song
- Liaoning Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials
- College of Chemistry
- Liaoning University
- Shenyang 110036
- China
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Nugroho RWN, Odelius K, Höglund A, Albertsson A. The nature of polymer grafts and substrate shape on the surface degradation of poly(
l
‐lactide). J Appl Polym Sci 2015. [DOI: 10.1002/app.42736] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Robertus Wahyu N. Nugroho
- Department of Fibre and Polymer TechnologyKTH Royal Institute of TechnologySE‐10044 Stockholm Sweden
| | - Karin Odelius
- Department of Fibre and Polymer TechnologyKTH Royal Institute of TechnologySE‐10044 Stockholm Sweden
| | - Anders Höglund
- Department of Fibre and Polymer TechnologyKTH Royal Institute of TechnologySE‐10044 Stockholm Sweden
| | - Ann‐Christine Albertsson
- Department of Fibre and Polymer TechnologyKTH Royal Institute of TechnologySE‐10044 Stockholm Sweden
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14
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Ferric chloride as an efficient and reusable catalyst for methanolysis of poly(lactic acid) waste. JOURNAL OF POLYMER RESEARCH 2015. [DOI: 10.1007/s10965-015-0783-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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15
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Melt Free-Radical Grafting of Maleic Anhydride onto Biodegradable Poly(lactic acid) by Using Styrene as A Comonomer. Polymers (Basel) 2014. [DOI: 10.3390/polym6051528] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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16
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Song X, Wang H, Zheng X, Liu F, Yu S. Methanolysis of poly(lactic acid) using acidic functionalized ionic liquids as catalysts. J Appl Polym Sci 2014. [DOI: 10.1002/app.40817] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Xiuyan Song
- College of Chemical Engineering; Qingdao University of Science and Technology; Qingdao 266042 China
| | - Hui Wang
- College of Chemical Engineering; Qingdao University of Science and Technology; Qingdao 266042 China
- College of Chemistry and Pharmaceutical Sciences; Qingdao Agricultural University; Qingdao 266109 China
| | - Xiaodi Zheng
- College of Chemical Engineering; Qingdao University of Science and Technology; Qingdao 266042 China
| | - Fusheng Liu
- College of Chemical Engineering; Qingdao University of Science and Technology; Qingdao 266042 China
| | - Shitao Yu
- College of Chemical Engineering; Qingdao University of Science and Technology; Qingdao 266042 China
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