Direct visualization of nano and microscale polymer morphologies in as-prepared and dialyzed polyampholyte hydrogels by electron microscopy techniques
| Autor: | Thuy Nguyen Thanh Tran, Byeongdu Lee, Jae-Young Cho, Hemant Charaya, Xinda Li, Hyun-Joong Chung |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
chemistry.chemical_classification
Potassium hydroxide Materials science Salt (chemistry) 02 engineering and technology Polymer 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Chloride 0104 chemical sciences chemistry.chemical_compound chemistry Chemical engineering Nano Self-healing hydrogels medicine General Materials Science 0210 nano-technology Nanoscopic scale Microscale chemistry medicine.drug |
| Zdroj: | MRS Communications. 8:1079-1084 |
| ISSN: | 2159-6867 2159-6859 |
| DOI: | 10.1557/mrc.2018.149 |
| Popis: | The structure of polymer networks in hydrogels determines the properties. In this study, we investigated the structure of a charge-balanced polyampholyte, poly(4-vinylbenzenesulfonate-co-[3-(methacryloylamino) propyl] trimethylammonium chloride). From as-prepared samples, nanoscale globules were visualized in polyampholyte hydrogels for the first time. The impact of dialyses processes on polymer structures were also studied. In deionized water, salt ions are leached out, thus polymer chains undergo zipping process to form cellular structure with micrometer-thick polymer walls that allow mechanical toughness to the hydrogel. Samples dialyzed in 6 M potassium hydroxide solution did not show such cellular structure, as in the case of as-prepared samples. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink