Robust and recoverable dual cross‐linking networks in pressure‐sensitive adhesives,Journal of Polymer Science

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Robust and recoverable dual cross‐linking networks in pressure‐sensitive adhesives
Journal of Polymer Science ( IF 3.9 ) Pub Date : 2020-10-28 , DOI: 10.1002/pol.20200628
Eun Seon Kim _{1,

2} , Da Bin Song ₂ , Kyoung Hwan Choi ₂ , Jae Heung Lee ₁ , Dong Hack Suh ₂ , Woo Jin Choi ₁

Affiliation

Pressure‐sensitive adhesives (PSAs) demand the ability to simultaneously improve toughness and adhesion. However, these requirements of PSAs have remained a great challenge because robust and recoverable characteristics are usually contradictory properties of PSAs. Dual cross‐linking networks developed by incorporating dynamic noncovalent bonds into chemical cross‐linking networks have the potential to mitigate these requirements in a wide variety of applications including adhesives, hydrogels, and elastomers. Herein, a facile approach to achieve dual cross‐linking networks of acrylic PSAs with excellent mechanical properties and high‐adhesive performance that integrate physically cross‐linked networks into chemically cross‐linked networks is proposed. Diurethane acrylic monomer‐pentaerythritol ethoxylate (DAM‐PEEL) groups were introduced into the acrylic PSA system through photopolymerization. The PSA/DAM‐PEEL dual cross‐linking networks led to the development of the chemically cross‐linked networks for both PSA and DAM via covalent bonds and the physically cross‐linked networks between the amide groups of DAM and the hydroxyl groups of PEEL via hydrogen bonds. Consequently, the PSA/DAM‐PEEL dual cross‐linking networks were able to simultaneously improve the modulus and stretchability. This design strategy for developing dual cross‐linking networks of materials could offer potential applications for various adhesive‐related applications.

中文翻译：

压敏胶中的稳固且可回收的双交联网络

压敏胶（PSA）要求能够同时提高韧性和附着力。然而，由于稳健和可恢复的特性通常是PSA的矛盾特性，因此PSA的这些要求仍然是一个巨大的挑战。通过将动态非共价键结合到化学交联网络中而开发的双重交联网络有潜力在包括粘合剂，水凝胶和弹性体在内的各种应用中减轻这些要求。在此，提出了一种简便的方法来实现丙烯酸PSA的双重交联网络，该网络具有优异的机械性能和高粘合性能，将物理交联的网络集成到化学交联的网络中。通过光聚合将二氨基甲酸酯丙烯酸单体-季戊四醇乙氧基化物（DAM-PEEL）基团引入丙烯酸PSA体系。PSA / DAM-PEEL双重交联网络导致了PSA和DAM通过共价键的化学交联网络以及DAM酰胺基和PEEL羟基之间的物理交联网络的发展。氢键。因此，PSA / DAM-PEEL双交联网络能够同时提高模量和可拉伸性。这种开发材料双交联网络的设计策略可以为各种与胶粘剂相关的应用提供潜在的应用。PSA / DAM-PEEL双重交联网络导致了PSA和DAM通过共价键的化学交联网络以及DAM酰胺基和PEEL羟基之间的物理交联网络的发展。氢键。因此，PSA / DAM-PEEL双交联网络能够同时提高模量和可拉伸性。这种开发材料双交联网络的设计策略可以为各种与胶粘剂相关的应用提供潜在的应用。PSA / DAM-PEEL双重交联网络导致了PSA和DAM通过共价键的化学交联网络以及DAM酰胺基和PEEL羟基之间的物理交联网络的发展。氢键。因此，PSA / DAM-PEEL双交联网络能够同时提高模量和可拉伸性。这种开发材料双交联网络的设计策略可以为各种与胶粘剂相关的应用提供潜在的应用。

更新日期：2020-12-02

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