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Abstract
As a key component in laminated glass, plasticized polyvinyl butyral (PVB) interlayer is a kind of impact resistant polymer material with high toughness. Recently, by using ultra-small angle X-ray scattering (USAXS) technique, we have reported that stretch-induced phase separated structure on the scale of hundreds of nanometers formed in plasticized PVB for the first time. In this work, the multiscale relaxation behavior of plasticized PVB was further investigated. The relaxation behavior of deformed plasticized PVB was studied from macroscopic stress, mesoscopic phase separated structure and microscopic chain segment by combining USAXS, birefringence with in-situ stretching device. The contributions of chain segments and hydrogen bonding clusters for the multiscale relaxation behavior are discussed. This article is protected by copyright. All rights reserved.
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