持久的聚乙基-树脂结合是通过硫,多面寡合物丝素接种和预处理实现的
Hongshu Jiang1, Jie Chen1, Wafa Ali Asaad1
1Yunnan Key Laboratory of Stomatology, School and Hospital of Stomatology, Kunming Medical University, Kunming 650106, China.
概括
这项研究通过硫化和接种增强了聚乙乙基 (PEEK) -树脂的结合,提高了耐用性,但没有影响PEEK.
科学领域:
- 生物材料科学是生物材料的科学.
- 聚合物化学 聚合物化学
- 牙科材料 牙科材料
背景情况:
- 聚乙基 (PEEK) 是一种用于牙科修复的高性能聚合物.
- 提高PEEK和树脂复合材料之间的粘合耐久性对于长期的临床成功至关重要.
- 目前用于PEEK的表面处理可能会损害其机械性能或生物相容性.
研究的目的:
- 为了评估硫酸硫化,紫外线启动的甲烯酸功能化的多面体寡合体丝素 (MA-POSS) 接种和酸盐预处理对PEEK树脂粘合耐久性的有效性.
- 评估这些表面修改对PEEK的界面特性,机械性能和体内细胞相容性的影响.
- 为了确定组合处理是否为PEEK树脂粘合提供协同效益.
主要方法:
- PEEK标本经过了硫化,MA-POSS接种,乙预处理,或它们的组合.
- 切割键强度 (SBS) 被立即测量,并经过10,000个热循环.
- 分析了表面形态 (SEM),化学 (XPS,FTIR),可湿性和粗性 (AFM).
- 评估了柔性特性和与人类牙纤维细胞的细胞相容性.
主要成果:
- 硫化制造了多孔表面;MA-POSS接种引入了甲基酸盐群.
- 乙预处理显著增加了粘合剂的透率,减少了空隙.
- 与未经处理的PEEK相比,结合的硫化和接种处理导致SBS的高.
- 在热循环后,发生了最小的键强度损失,对PEEK的柔性特性或细胞兼容性没有不利影响.
结论:
- 结合微机械保留和共价合,增强通过乙湿,显著提高PEEK树脂的界面耐用性.
- 这种表面修饰策略可以提高结合强度,而不会损害PEEK的内在特性或细胞兼容性.
- 开发的方法对临床应用有希望,需要进一步研究.
相关概念视频
Types of Step-Growth Polymers: Polyesters
2.6K
The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the polymer...
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the polymer...
2.6K
Olefin Metathesis Polymerization: Ring-Opening Metathesis Polymerization (ROMP)
3.3K
Ring-opening metathesis polymerization or ROMP involves strained cycloalkenes as starting materials. The mechanism of ROMP proceeds by reacting cycloalkene with Grubbs catalyst to give metallacyclobutane intermediate which undergoes a ring-opening reaction to form new carbene. The new carbene reacts with another molecule of cycloalkene. Repetition of these steps leads to the formation of an unsaturated open-chain polymer product. All these steps are reversible, however, relieving the ring...
3.3K
Anionic Chain-Growth Polymerization: Overview
2.7K
The polymerization process that involves carbanion as an intermediate is called anionic polymerization. It is also a type of addition or chain-growth polymerization. Anionic polymerization gets initiated by a strong nucleophile such as an organolithium or a Grignard reagent. The most commonly used initiator for anionic polymerization is butyl lithium. Monomers involved in anionic polymerization must possess a vinyl group bonded to one or two electron-withdrawing groups. For instance,...
2.7K


