Ultra-Strong and Proton Conductive Aqua-Based Adhesives from Facile Blending of Polyvinyl Alcohol and Tungsten Oxide Clusters

Jiadong Chen; Zhenchuan Dong; Mu LiXinpei LiKun ChenPanchao Yin

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Ultra-Strong and Proton Conductive Aqua-Based Adhesives from Facile Blending of Polyvinyl Alcohol and Tungsten Oxide Clusters

机译：Ultra-Strong and Proton Conductive Aqua-Based Adhesives from Facile Blending of Polyvinyl Alcohol and Tungsten Oxide Clusters

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The explosive growth of binder industry spurs the development of strongadhesives with the integration of multi-functionalities as well as costeffectiveand eco-friendly processability. Here, polyvinyl alcohol (PVA) andsub-nanoscale metal oxide cluster, phosphotungstic acid (PTA), both withbroad commercial availability, are complexed through hydrogen bonding inwater. The obtained nanocomposites demonstrate promising light transmittanceand proton conductivity, and most importantly, unprecedentedly highadhesive strengths as ≈4 kN m~（–1） for peeling strength and 8.2 ± 1.7 MPa forsingle lap shear strength on typical glass substrate. The supramolecularcomplexation of PVA with PTA can significantly reduce its crystallinity andaccelerate PVA chain dynamics for negligible internal stress and membraneshrinkage upon drying, leading to close contact with glass substrates forstrong adhesion. Meanwhile, the supramolecular interaction between PVAand PTA contributes to the nanocomposites’ enhanced mechanical strengthand resolves the issue of cohesion failure to ensure high adhesive strengths.The fast chain dynamics also benefit rapid proton transportation, contributingto the high proton conductivities. The binder design protocol can be extendedto general polymer systems integrated with desired functionalities and allowsscale up processing, providing great opportunities for functional adhesivesfor safety glass and electronic industry.

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来源
《Advanced functional materials》 |2022年第33期|2111892.1-2111892.8|共8页
作者
Jiadong Chen; Zhenchuan Dong; Mu LiXinpei LiKun ChenPanchao Yin;
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State Key Laboratory of Luminescent Materials and DevicesSchool of Molecular Science and EngineeringSouth China University of TechnologyGuangzhou 510640, China;

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正文语种英语
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aqua-based adhesives; metal oxide clusters; polyvinyl alcohol; supramolecular interactions; ultra-strong adhesions;

Ultra-Strong and Proton Conductive Aqua-Based Adhesives from Facile Blending of Polyvinyl Alcohol and Tungsten Oxide Clusters

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