Hongyi Lv , Qianqian Liang , Yi He , Hao Liang , Shilin Xiang , Wanting Yuan , Sifan Li , Jing Hong , Jinrong Wu , Lijuan Zhao , Yi Wang
{"title":"用于紧急保护出土骨质文物的透明、保湿、抗菌和机械柔性水凝胶","authors":"Hongyi Lv , Qianqian Liang , Yi He , Hao Liang , Shilin Xiang , Wanting Yuan , Sifan Li , Jing Hong , Jinrong Wu , Lijuan Zhao , Yi Wang","doi":"10.1016/j.eurpolymj.2024.113590","DOIUrl":null,"url":null,"abstract":"<div><div>The excavation of bone relics holds significant implications for studying the origins, evolution, and decline of cultures. However, effectively protecting fragile unearthed bone relics like ivory remains challenging due to environmental changes from burial to exposure, which can cause dehydration and microorganism proliferation, leading to deterioration. Herein, a moisturizing and antibacterial polyacrylamide (PAM) hydrogel containing glycerol (Gly) and betaine hydrochloride (Bh) is designed for emergency conservation of unearthed bone relics. Gly forms strong hydrogen bonds with the water molecules in the hydrogel, which not only inhibits the diffusion of water molecules into the air, thereby extending their moisturizing duration, but also prevents the diffusion of water molecules into bone relics, avoiding reverse osmosis damage to the relics. Consequently, this allows the relics to maintain their initial moisture content for a prolonged period. Additionally, Gly forms hydrogen bonds with PAM, which imparts high flexibility, strength, elongation, and toughness to the hydrogel, enabling it to conform closely to curved ivory surfaces and resist external forces. In addition, the introduction of Bh significantly enhances the hydrogel’s antibacterial properties, achieving antibacterial rates of 97.96 % against <em>Salmonella</em> and 100 % against <em>Escherichia coli.</em> Based on these advantages, we have applied the hydrogel to the emergency conservation of unearthed bone relics at Sanxingdui. After applying the hydrogel to the ivory surface, the results are significant. 1 day after application, the ivory’s weight retention rate is maintained at over 95 %. Even after 7 days of protection, the appearance of the ivory remains almost unchanged, its mechanical properties are still preserved at more than 90 % of the original levels, and the growth of bacteria on the ivory surface is effectively inhibited. Therefore, this research offers a new approach to the preservation of unearthed bone relics.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"222 ","pages":"Article 113590"},"PeriodicalIF":5.8000,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A transparent, moisturizing, antibacterial and mechanically flexible hydrogel for emergency conservation of unearthed bone relics\",\"authors\":\"Hongyi Lv , Qianqian Liang , Yi He , Hao Liang , Shilin Xiang , Wanting Yuan , Sifan Li , Jing Hong , Jinrong Wu , Lijuan Zhao , Yi Wang\",\"doi\":\"10.1016/j.eurpolymj.2024.113590\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The excavation of bone relics holds significant implications for studying the origins, evolution, and decline of cultures. However, effectively protecting fragile unearthed bone relics like ivory remains challenging due to environmental changes from burial to exposure, which can cause dehydration and microorganism proliferation, leading to deterioration. Herein, a moisturizing and antibacterial polyacrylamide (PAM) hydrogel containing glycerol (Gly) and betaine hydrochloride (Bh) is designed for emergency conservation of unearthed bone relics. Gly forms strong hydrogen bonds with the water molecules in the hydrogel, which not only inhibits the diffusion of water molecules into the air, thereby extending their moisturizing duration, but also prevents the diffusion of water molecules into bone relics, avoiding reverse osmosis damage to the relics. Consequently, this allows the relics to maintain their initial moisture content for a prolonged period. Additionally, Gly forms hydrogen bonds with PAM, which imparts high flexibility, strength, elongation, and toughness to the hydrogel, enabling it to conform closely to curved ivory surfaces and resist external forces. In addition, the introduction of Bh significantly enhances the hydrogel’s antibacterial properties, achieving antibacterial rates of 97.96 % against <em>Salmonella</em> and 100 % against <em>Escherichia coli.</em> Based on these advantages, we have applied the hydrogel to the emergency conservation of unearthed bone relics at Sanxingdui. After applying the hydrogel to the ivory surface, the results are significant. 1 day after application, the ivory’s weight retention rate is maintained at over 95 %. Even after 7 days of protection, the appearance of the ivory remains almost unchanged, its mechanical properties are still preserved at more than 90 % of the original levels, and the growth of bacteria on the ivory surface is effectively inhibited. Therefore, this research offers a new approach to the preservation of unearthed bone relics.</div></div>\",\"PeriodicalId\":315,\"journal\":{\"name\":\"European Polymer Journal\",\"volume\":\"222 \",\"pages\":\"Article 113590\"},\"PeriodicalIF\":5.8000,\"publicationDate\":\"2024-11-26\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"European Polymer Journal\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0014305724008516\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"POLYMER SCIENCE\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"European Polymer Journal","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0014305724008516","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"POLYMER SCIENCE","Score":null,"Total":0}
A transparent, moisturizing, antibacterial and mechanically flexible hydrogel for emergency conservation of unearthed bone relics
The excavation of bone relics holds significant implications for studying the origins, evolution, and decline of cultures. However, effectively protecting fragile unearthed bone relics like ivory remains challenging due to environmental changes from burial to exposure, which can cause dehydration and microorganism proliferation, leading to deterioration. Herein, a moisturizing and antibacterial polyacrylamide (PAM) hydrogel containing glycerol (Gly) and betaine hydrochloride (Bh) is designed for emergency conservation of unearthed bone relics. Gly forms strong hydrogen bonds with the water molecules in the hydrogel, which not only inhibits the diffusion of water molecules into the air, thereby extending their moisturizing duration, but also prevents the diffusion of water molecules into bone relics, avoiding reverse osmosis damage to the relics. Consequently, this allows the relics to maintain their initial moisture content for a prolonged period. Additionally, Gly forms hydrogen bonds with PAM, which imparts high flexibility, strength, elongation, and toughness to the hydrogel, enabling it to conform closely to curved ivory surfaces and resist external forces. In addition, the introduction of Bh significantly enhances the hydrogel’s antibacterial properties, achieving antibacterial rates of 97.96 % against Salmonella and 100 % against Escherichia coli. Based on these advantages, we have applied the hydrogel to the emergency conservation of unearthed bone relics at Sanxingdui. After applying the hydrogel to the ivory surface, the results are significant. 1 day after application, the ivory’s weight retention rate is maintained at over 95 %. Even after 7 days of protection, the appearance of the ivory remains almost unchanged, its mechanical properties are still preserved at more than 90 % of the original levels, and the growth of bacteria on the ivory surface is effectively inhibited. Therefore, this research offers a new approach to the preservation of unearthed bone relics.
期刊介绍:
European Polymer Journal is dedicated to publishing work on fundamental and applied polymer chemistry and macromolecular materials. The journal covers all aspects of polymer synthesis, including polymerization mechanisms and chemical functional transformations, with a focus on novel polymers and the relationships between molecular structure and polymer properties. In addition, we welcome submissions on bio-based or renewable polymers, stimuli-responsive systems and polymer bio-hybrids. European Polymer Journal also publishes research on the biomedical application of polymers, including drug delivery and regenerative medicine. The main scope is covered but not limited to the following core research areas:
Polymer synthesis and functionalization
• Novel synthetic routes for polymerization, functional modification, controlled/living polymerization and precision polymers.
Stimuli-responsive polymers
• Including shape memory and self-healing polymers.
Supramolecular polymers and self-assembly
• Molecular recognition and higher order polymer structures.
Renewable and sustainable polymers
• Bio-based, biodegradable and anti-microbial polymers and polymeric bio-nanocomposites.
Polymers at interfaces and surfaces
• Chemistry and engineering of surfaces with biological relevance, including patterning, antifouling polymers and polymers for membrane applications.
Biomedical applications and nanomedicine
• Polymers for regenerative medicine, drug delivery molecular release and gene therapy
The scope of European Polymer Journal no longer includes Polymer Physics.