私密直播全婐app免费大渔直播,国产av成人无码免费视频,男女同房做爰全过程高潮,国产精品自产拍在线观看

相關(guān)鏈接
聯(lián)系方式
  • 通信地址:浙江省溫州市龍灣區(qū)金聯(lián)路1號(hào)
  • 郵編:454000
  • 電話:0391-3986910
  • 傳真:
  • Email:qiangcheneric@163.com
當(dāng)前位置:> 首頁(yè) > 論文著作 > 正文
2021-JMCA-Transforming Non-Adhesive Hydrogels to Reversible Tough Adhesives via Mixed-Solvent-Induced Phase Separation
作者:Wei Cui, Ruijie Zhu, Yong Zheng, Qifeng Mu, Menghan Pi, Qiang Chen*, Rong Ran*
關(guān)鍵字:hydrogel
論文來(lái)源:期刊
具體來(lái)源:Journal of Materials Chemistry A
發(fā)表時(shí)間:2021年
Realizing tough adhesion between hydrogels and solid surfaces is crucial for developing emerging soft–rigid hybrid devices with a high level of complexity. However, this is extremely challenging for numerous non-adhesive hydrogels due to their weak interfacial interaction with solid surfaces and negligible mechanical dissipation. Here, we report a phase-separation strategy to transform traditionally non-adhesive hydrogels to tough glues for diverse solid surfaces, without the need for chemical treatment. Equilibrating a hydrogel in a mixture of both good and poor solvents induces phase separation, resulting in a significant increment of polymer volume fraction at the surface and in the bulk of the gel. The high-density polymer chains at the gel surface facilitate the formation of dense arrays of noncovalent bonds with the solid surfaces, improving the intrinsic work of adhesion and favoring the force transmission from the crack front to the bulk gel. Meanwhile, the phase-separated structure in the bulk gel allows significant mechanical dissipation upon interfacial separation. Such a synergy contributes to a high interfacial toughness. The tough adhesion, reaching over 1000 J m?2, is instant and repeatable, with inappreciable loss in the interfacial toughness after over 100 attach/detach cycles. This facile, repeatable phase-separation approach is also universal, and can be induced by various mixed solvents and applies to multiple types of common non-adhesive hydrogels for tough yet detachable gel–solid adhesion.
主站蜘蛛池模板: 宜春市| 万源市| 兰溪市| 巴马| 南靖县| 蓬安县| 施秉县| 沂源县| 茶陵县| 石嘴山市| 曲沃县| 当阳市| 米易县| 师宗县| 华阴市| 安多县| 昭通市| 高密市| 赣州市| 连云港市| 泗洪县| 容城县| 保亭| 祥云县| 玉溪市| 嵊泗县| 东乌珠穆沁旗| 梁平县| 咸丰县| 杭州市| 定日县| 浦城县| 襄汾县| 钦州市| 黑河市| 阿克陶县| 巍山| 西华县| 枣强县| 泸西县| 扬中市|