定制生物相容聚乙烯的热敏度:线性甘和乙烯基甘乙烯的共聚物
Verena Müller1, Rebecca Matthes1, Manfred Wagner2
1Department of Chemistry, Johannes Gutenberg University Duesbergweg 10-14 D-55128 Mainz Germany hfrey@uni-mainz.de.
线性甘和乙烯基甘乙烯的新生物相容性共聚物表现出可调节的热敏反应行为. 这些P ((linG-co-EGE) 聚合物显示出在医疗应用中作为聚乙烯甘醇 (PEG) 的替代品的潜力.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
- 生物医学工程 生物医学工程
背景情况:
- 线性多糖醇是一种含水性,生物相容的聚合物,具有重要的医疗应用潜力.
- 热敏聚合物为先进的应用提供可调节的特性.
- 聚乙烯甘醇 (PEG) 是生物医学应用中广泛使用的基准.
研究的目的:
- 合成基于线性甘油的新型热敏聚乙烯共聚物.
- 为了研究共聚合动力学和微观结构.
- 评估潜在的生物医学用途的生物相容性和免疫性质.
主要方法:
- 乙基甘乙烯 (EGE) 和乙氧乙基甘乙烯 (EEGE) 的统计阳离子环开放共聚化.
- 通过乙烯酸脱保护产生P ((linG-co-EGE) kopo 聚合物.
- 在现场1H NMR动力学,度测量和温度依赖的1H NMR进行表征.
- DOSY NMR光谱学用于研究水力动力学半径变化.
- 细胞活力和免疫学测试.
主要成果:
- 合成具有狭窄分子量分布 (Đ ≤1.07) 的P(linG-co-EGE) 共聚合物.
- 反应性比率表明EEGE的纳入略有有利 (rEEGE=1.787,rEGE=0.560).
- 可调节的热敏反应行为在云点在9.0-71.4°C之间实现.
- 在达到云点温度时观察到的水力动力半径变化.
- 模范性共聚物显示细胞活力和免疫学与PEG.相比.
结论:
- 成功合成了新型生物相容性和热敏性P ((linG-co-EGE) 共聚合物.
- 可调节的热敏反应行为使它们适应各种应用.
- 已证明的生物相容性和免疫学特征表明它适合作为生物医学领域的PEG替代品.
更多相关视频
15:33Microwave-assisted Functionalization of Polyethylene glycol and On-resin Peptides for Use in Chain Polymerizations and Hydrogel Formation
Published on: October 29, 2013
12:22Synthesis of Thermogelling PolyN-isopropylacrylamide-graft-chondroitin Sulfate Composites with Alginate Microparticles for Tissue Engineering
Published on: October 26, 2016
相关概念视频
Types of Step-Growth Polymers: Polyesters
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 Classification: Stereospecificity
Polymer Classification: Architecture
Step-Growth Polymerization: Overview
Many natural and synthetic polymers are produced by...
Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)
Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...
Olefin Metathesis Polymerization: Overview
Ruthenium-based Grubbs catalyst is the most commonly used catalyst for olefin metathesis polymerization. Grubbs catalyst consists...
