材料科学
胶粘剂
光致聚合物
单体
环境友好型
聚合
玻璃化转变
化学工程
聚合物
复合材料
纳米技术
图层(电子)
生态学
工程类
生物
作者
Young Joo Park,Junkyu Kim,Dongchan Ahn,Youngchang Yu,Wonjoo Lee,Min Sang Kwon
标识
DOI:10.1002/cssc.202301795
摘要
Acrylic pressure sensitive adhesives (PSAs) are the most widely used and play a crucial role in ensuring the stable operation of foldable displays. With a focus on product sustainability, numerous studies have aimed to enhance eco-friendliness of acrylic PSAs. However, few studies specifically address the development of environmentally friendly acrylic PSAs for foldable devices. In this work, we synthesized new monomers by modifying citronellol, a terpenoid, for use as functional monomers and low glass transition temperature (Tg) monomers in acrylic optical clear adhesives (OCAs). We prepared OCAs using these monomers via an environmentally friendly visible-light-driven polymerization process due to its greater energy efficiency and reduced harm to humans, as opposed to the ultraviolet light that is normally used in conventional photopolymerization processes. Their properties were confirmed through rheological analysis. The resultant OCAs exhibit low Tg, appropriate storage modulus across a wide temperature range, reliable adhesion force to various substrates, and decent creep and recovery properties. These characteristics indicate their potential to enhance the eco-friendliness of foldable devices.
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