ACS Applied Polymer Materials
·
2025
·
IF 4.7
Jin Han,Fang Chen,Weipeng Qin,Lei Wang,Dan Wu,Kun Shen,Xiaoxue Yin,Qingquan Xue
The practical application of tea tree oil (TTO) as a natural broad-spectrum antimicrobial agent is limited by high volatility, chemical instability, and compatibility challenges with conventional polymer matrices. In this study, an antimicrobial thermosetting system with controlled hydrolysis was constructed. The N,N,N′,N″,N″-pentamethyldipropylenetriamine (PMD) cured samples exhibited superior mechanical and thermal properties in comparison to the N,N,N′,N′-tetramethyl-1,6-hexanediamine (TMHDA) or N,N,N′,N′-tetramethyl-1,3-propanediamine (TMPDA) cured samples. The TTO-loaded β-cyclodextrin (β-CD) was cross-linked by a rapid quaternization reaction to give the thermoset with quaternary ammonium contact-mode antimicrobial and TTO pharmaceutical antimicrobial properties. The remaining tertiary amine groups in the system provide a weakly alkaline environment, while the quaternary ammonium ester (Quat Ester) groups undergo weak base accelerated hydrolysis. The tensile strength of the cured system reached 23.69 MPa, and the antimicrobial activity against Escherichia coli and Staphylococcus aureus reached 95.27 and 95.63%, respectively; the antimicrobial performance could be further enhanced when long-chain cetyl chloroacetate (CCA) was involved in the curing (the antimicrobial activity reached 98.33 and 98.07%, respectively). The antimicrobial and pH-responsive degradation properties provide ideas for the development of degradable and antimicrobial materials for three-dimensional (3D) printing, solid disinfectants and so on.
研究领域:
高分子材料科学
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生物医学工程
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抗菌材料
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药物递送
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可降解材料
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2023
·Vol. 13
·期 13
·1985
·
IF 5.3
Hong-Lan Huang,Qi-Kai Shi,Yan Deng,Xiang-Yang Lei,Qing-Huang Zhang,Jin-Ju Chen,Xue-Ran Deng
In order to improve laser transmission efficiency at 1053 nm and 527 nm, a potassium deuterium phosphate (DKDP) crystal (a key component of high-power laser systems) needs a bi-layer antireflection coating system on its incident surface. UV-curable polysiloxane coatings with a refractive index varying from 1.500 to 1.485 were prepared through the polycondensation of a methacryloxy propyl trimethoxylsilane (MPS) monomer with a controllable degree of hydrolysis. Additionally, the influence rule of the coating structure on the refractive index was intensively studied, and the primary factors that dominate the hydrolysis process were discussed. Further refractive index adjustment was achieved using only a small amount of dopant based on the polysiloxane coating with refractive index of 1.485, allowing for high antireflection of the bi-layer coating system at desired wavelengths to be achieved. In addition, high laser damage resistance and remarkable mechanical properties of the coating were simultaneously realized through the incorporation of a minor quantity of dopants, which benefited from the successful modulation of the intrinsic refractive index of the polysiloxane coating.Keywords:controllable hydrolysis;UV-curable polysiloxane coating;refractive index modulation;laser damage resistance;mechanical property
研究领域:
材料科学
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光学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Zhenyu Hu,Hongfei Wang,Yao Li,Xiaolu Liu,Jing Tian,Xu Fei,Cong Wang,Longquan Xu,Sheng Cheng
Egg white protein is widely utilized in the food industry, particularly in aerated confectionery, owing to its excellent foaming properties. However, foam, as a highly unstable thermodynamic system, inevitably undergoes collapse, severely compromising the production quality of related food products. In this study, magnetic inorganic-organic hybrid biomimetic mineralized immobilized papain with zinc phosphate as the inorganic component were synthesized by self-assembly method, exhibiting a 300 % higher relative activity compared to free enzymes. The molecular weight distribution of hydrolyzed protein was precisely regulated by the space selective catalysis of immobilized papain, and the foaming properties of hydrolyzed protein were significantly improved. The foaming capability was increased by approximately 200 %, and the foam demonstrated exceptional stability, maintaining its volume unchanged for 3 h.
研究领域:
食品科学
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蛋白质工程
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酶催化
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材料科学
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食品化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）