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- 저자 : Liangpeng Zeng (검색결과 2 건)
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Liangpeng Zeng,Hongyuan Cui,Yi Liu,Xinxing Lin,Ziang Wang,Hui Guo,Wei-Hua Li 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.114 No.-
Slippery organogels have gained increasing interest as competitive candidates for antifouling applications. However, it remains challenging to develop tough organogels suitable for fouling resistance indynamic and flexible application scenarios. Herein, a kind of physically crosslinked organogels with acombination of desirable properties, including high toughness, transparency, surface slipperiness, andfouling resistance is developed. The representative pAL organogels, constructed by poly(acrylonitrileco-lauryl acrylate) (pAL) copolymer and infiltrated with n-hexadecane as a lubricating solvent, possesshigh tensile fracture stress, fracture strain, Young’s modulus, and toughness of 4.28 MPa, 517%,2.52 MPa, and 11.19 MJ m3. In the organogels, the polar cyano groups from the pAN segments serveas physical cross-linking points, where the synergistic effects played by oleophobic and dipole–dipoleinteractions significantly toughen the materials. Meanwhile, the soft oleophilic poly(lauryl acrylate)chains offer considerable solvent content, giving rise to satisfactory surface slipperiness. Therefore, theorganogels bring about a 57.16% and 81.50% reduction of protein and bacteria adhesion in comparisonto the control. The satisfactory antifouling performance has been further confirmed with Spirulina platensis. It is deemed that this organogel may provide great potential for various applications in the future suchas anti-adhesion materials and self-cleaning coating.
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Convenient hydrogel adhesion with crystalline zones
Wen-Tao Chen,Liangpeng Zeng,Ping Li,Yi Liu,Jing-Liang Huang,Hui Guo,Ping Rao,Wei-Hua Li 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.117 No.-
Adhering soft hydrogels to hard substrates is challenging. Existing adhesion approaches mainly rely oninterfacial chemical bonds or physical interactions, which typically require complex fabrication processesor specific surface properties. Herein, we report a convenient approach to achieving effective hydrogeladhesion onto various hard substrates with in-situ formed crystalline zones by heating. Semicrystallizablepoly(vinyl alcohol) hydrogels were directly cast on various subtracts by a dryingswellingprocess, which demonstrates strong adhesion with adhesion energy as high as 890 J/m2. Theadhesion performance demonstrates an obvious positive correlation with the crystalline property. Therefore, the factors determining the crystalline degree, including the polymer type and preparationtemperature, demonstrate remarkable influences on the adhesion performance. Moreover, this adhesionperformance manifests high durability in harsh environments. Benefitting from the strong and durableadhesion performance, the crystalline gels can serve as a tie coating layer to joint various hydrogels,which demonstrate satisfactory antifouling ability. Therefore, this strategy may endow the materials withgreat potential for various practical applications in the future.
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