The influence of the polymerization on properties of an ethylacrylate/2-ethyl hexylacrylate pressure-sensitive adhesive suspension

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• 作者：J. Kajtna ; B. Likozar ; J. Golob ; M. Krajnc
• 关键词：A. Pressure-sensitive ; A. Water based ; M. Infrared spectra ; M. Peel ; A. Microsphere
• 刊名：International Journal of Adhesion and Adhesives
• 出版年：2008
• 期刊代码：75_01437496
• 类别：et
• 出版时间：October 2008
• 卷：28
• 期：7
• 页码：382-390
• 文件大小：170 K

摘要

In this paper, the batch suspension copolymerization process for production of microsphere acrylic pressure-sensitive adhesives (PSA) is presented. The effects of different process and chemical parameters on adhesion properties are discussed. The reaction was monitored in-line by using attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy. Properties of the adhesive suspension (particle size), adhesive (gel phase, molecular weight, glass transition temperature (T_g)) and adhesion properties (tack, peel strength and shear) were determined. The results have shown that reaction kinetics strongly depends on polymerization temperature and initiator concentration. On the other hand, adhesion properties depend mainly on the T_g of the polymer and on the amount of insoluble gel fraction in the adhesive.