| 학회 |
한국고분자학회 |
| 학술대회 |
2016년 봄 (04/06 ~ 04/08, 대전컨벤션센터) |
| 권호 |
41권 1호 |
| 발표분야 |
고분자구조 및 물성 |
| 제목 |
Supramolecular Gels with High Strength by Tuning of Calix[4]arene-Derived Networks |
| 초록 |
Supramolecular gels comprised of low-molecular weight gelators are generally regarded as mechanically weak and unable to support formation of free-standing structures, hence their practical use with applied loads has been limited. Here, we reveal a technique for in situ generation of high tensile strength supramolecular hydrogels derived from low-molecular weight gelators. By controlling the concentration of HCl during hydrazone formation between calix-[4]arene-based gelator precursors, we were able to tune the mechanical and elastic properties of the resulting gel. Organogels formed without HCl exhibited impressive tensile strengths, higher than 40 MPa, which is the strongest among self-assembled gels. Hydrogels, prepared by solvent exchange of organogels in water, showed 7,000~10,000 fold enhanced mechanical properties due to further hydrazone formation. |
| 저자 |
이지하1, kazuo Sakurai1, 정종화2
|
| 소속 |
1the Univ. of kitakyushu, 2경상대 |
| 키워드 |
calix[4]arene; hydrazone reaction
|
| E-Mail |
|
