编号
020027302
推送时间
20210111
研究领域
林产化工
年份
2021
类型
期刊
语种
英语
标题
Temperature-induced structural changes of biocompatible crystallizable rosin polymer in solution and hydrogel
来源期刊 Journal of Molecular Liquids
期
第273期
发表时间
20201007
关键词
Structural changes;
Crystallization;
Hydrogel;
Hemocompatibility;
Biocompatibility;
Rosin;
摘要
In this work, the structural changes of amphiphilic polymer polyethylene glycol-acrylicpimaric acid-polyethylene glycol (PEG-APA-PEG) were studied through dynamic light scattering (DLS), rayleigh light scattering (RLS), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) technologies in a heating and cooling run. Reversible micelle to aggregation structural change was observed as the concentration was above critical micelle concentration (CMC). The structural changes including multi-chain clusters, self-seeding, disaggregate, fusion, scission and corona crystallization were thoroughly revealed as concentration was closed to or lower than CMC. In addition, the crystallization behavior and mechanism of PEG-APA-PEG polymer in solution were revealed by X-ray diffraction (XRD), Differential scanning calorimetry (DSC) and Polarized optical microscopy (POM). The acrylicpimaric acid segments formed seeds at 85 °C and the PEG corona crystallized below 25 °C. Gel–sol transition of PEG-APA-PEG occurred at 8 °C during heating were governed via the crystallization of PEG segment at 5 °C. The rosin copolymer possessing good hemocompatibility and biocompatibility might potentially was used for biomedical material.
服务人员
尚玮姣
PDF文件
浏览全文