The aromatic hydrocarbon resins with various hydrogenation degrees Part 1. The phase behavior and miscibility with polybutadiene and with polystyrene
The aromatic hydrocarbon resins with various hydrogenation degrees Part 1. The phase behavior and miscibility with polybutadiene and with polystyrene
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DOI：
10.1016/s0032-3861(99)00614-x
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发表时间：
2000-06-01
期刊：
影响因子：
4.6
通讯作者：
Lee, KH
中科院分区：
文献类型：
--
作者：
Kim, JK;Ryu, DY;Lee, KH
采用浊度法研究了氢化芳烃树脂（HR）与聚丁二烯（PB）和聚苯乙烯（PS）的相容性。以下，将每个单体具有9个碳原子的芳族烃树脂称为C-9树脂。我们发现，C-9树脂，只有一个有限的（或部分）与PB的相容性，成为完全混溶PB的氢化度（DH）在HR增加到最佳值的DH。在活性炭负载的钯（Pd）催化剂存在下进行的C-9树脂的氢化反应将树脂中的芳环转化为脂环。我们通过监测氢气用量和反应时间来控制C-9树脂的脱氢度。通过元素分析和密度测量确定了HR中的DH，并通过傅里叶变换红外光谱、H-1和C-13核磁共振光谱以及紫外/可见光光谱确定了HR的化学结构。根据共混体系的上临界溶解温度的结果，发现PS与HRs之间的有利相互作用随DH的增加而逐渐减弱，并存在一个最佳DH值（约0.7），其给出与PB的最有利的相互作用。PB和HR之间增强的相容性的意义，通过测量由聚苯乙烯-嵌段-聚丁二烯-嵌段-聚苯乙烯（SBS三嵌段）共聚物和HR以及由SBS三嵌段共聚物和纯C-9树脂制备的压敏粘合剂（PSA）的粘性来证明PB和C-9树脂之间的相容性。我们发现，SBS三嵌段共聚物/HRs混合物的探针粘性对于DH = 0.7的HR经历最大值（1100 g/cm（2）），在该最大值处，HR与PB具有最有利的相互作用，如由浊度测量所确定的，而SBS三嵌段共聚物/C-9树脂混合物的探针粘性小得可以忽略。用溶解度参数法和基团贡献法对实验结果进行了定性解释。(C)2000爱思唯尔科技有限公司版权所有。
The miscibility of hydrogenated aromatic hydrocarbon resin (HR) with polybutadiene (PB) and polystyrene (PS) was investigated using turbidity measurement. Hereafter, the aromatic hydrocarbon resin having nine carbon atoms per monomer is referred to as C-9 resin. We found that C-9 resin, which has only a limited (or partial) miscibility with PB, became completely miscible with PB as the degree of hydrogenation (DH) in HR was increased to the optimum value of DH. The hydrogenation reaction of C-9 resin, which was conducted in the presence of a palladium (Pd) catalyst supported by activated carbon, converted aromatic rings in the resin to alicyclic rings. We controlled DH of C-9 resin by monitoring the amount of hydrogen used and the duration of reaction. The DH in HR was determined by elemental analysis and density measurement, and the chemical structures of HRs were determined by Fourier transform infrared spectroscopy, H-1 and C-13 nuclear magnetic resonance spectroscopy, and ultraviolet/visible Light spectroscopy. On the basis of the results of the upper critical solution temperatures of the blend systems investigated, it was found that a favorable interaction between PS and HRs decreased steadily with increasing DH and that there exists an optimum value of DH (approximately 0.7) in HR that gives the most favorable interaction with PB, The significance of the enhanced miscibility between PB and HRs, compared to the miscibility between PB and C-9 resin, was demonstrated by measuring the tack property of pressure-sensitive adhesives (PSAs), which were prepared from a polystyrene-block-polybutadiene-block-polystyrene (SBS triblock) copolymer and HRs, and from an SBS triblock copolymer and neat C-9 resin. We found that the probe tack of SBS triblock copolymer/HRs mixtures goes through a maximum (1100 g/cm(2)) for HR having DH = 0.7, at which HR has the most favorable interaction with PB as determined from turbidity measurement, whereas the probe tack of SBS triblock copolymer/C-9 resin mixture is negligibly small. These results were qualitatively interpreted by the solubility parameter approach using group contribution method. (C) 2000 Elsevier Science Ltd. All rights reserved.