Wen, Jie; Zhang, Xiaopeng; Pan, Mingwang; Yuan, Jinfeng; Jia, Zhanyu; Zhu, Lei published the artcile< A robust, tough and multifunctional polyurethane/tannic acid hydrogel fabricated by physical-chemical dual crosslinking>, Application of C19H34O2, the main research area is polyurethane tannic acid hydrogel fabricated robust tough property; double crosslinking; mechanical properties; multifunction; polyurethane hydrogel; tannic acid.
Commonly synthetic polyethylene glycol polyurethane (PEG-PU) hydrogels possess poor mech. properties, such as robustness and toughness, which limits their load-bearing application. Hence, it remains a challenge to prepare PEG-PU hydrogels with excellent mech. properties. Herein, a novel double-crosslinked (DC) PEG-PU hydrogel was fabricated by combining chem. with phys. crosslinking, where trimethylolpropane (TMP) was used as the first chem. crosslinker and polyphenol compound tannic acid (TA) was introduced into the single crosslinked PU network by simple immersion process. The second phys. crosslinking was formed by numerous hydrogen bonds between urethane groups of PU and phenol hydroxyl groups in TA, which can endow PEG-PU hydrogel with good mech. properties, self-recovery and a self-healing capability. The research results indicated that as little as a 30 mg·mL-1 TA solution enhanced the tensile strength and fracture energy of PEG-PU hydrogel from 0.27 to 2.2 MPa, 2.0 to 9.6 KJ·m-2, resp. Moreover, the DC PEG-PU hydrogel possessed good adhesiveness to diverse substrates because of TA abundant catechol groups. This work shows a simple and versatile method to prepare a multifunctional DC single network PEG-PU hydrogel with excellent mech. properties, and is expected to facilitate developments in the biomedical field.
Polymers (Basel, Switzerland) published new progress about Adhesives. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Application of C19H34O2.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics