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首页> 外文期刊>Journal of Applied Polymer Science >Polycondensation and autocondensation networks in polyflavonoid tannins. I. Final networks
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Polycondensation and autocondensation networks in polyflavonoid tannins. I. Final networks

机译：多黄酮类鞣质中的缩聚和自缩网络。一，最终网络

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摘要

A thermomechanical analysis (TMA) study, directly on a bonded joint during the process of adhesive hardening, on the sinergy and interference between polycondensation and autocondensation on procyanidin, and profisetinidin-prorobinetinidin-type polyflavonoid tannins network formation and hardening, confirmed that also at the higher curing temperatures characteristic of the hardening of tannin-based wood adhesives, hardening by polycondensation can be coupled with simultaneous hardening of tannins by autocondensation. Some coreactants appear to depress the tannin autocondensation while still leaving a small contribution of this reaction to the formation of the final crosslinked network. Other coreactants instead appear to enhance formation of the final network by sinergy between the 2 condensation mechanisms, while still others do not show any interference between the 2 types of reaction. (C) 1998 John Wiley & Sons, Inc. [References: 34]
机译：热力学分析（TMA）研究直接在粘合剂硬化过程中的键合接头上进行，对原花青素缩聚和自缩合与profisetinidin-prorobinetinidin型聚类黄酮单宁网络的形成和硬化之间的相互影响和干扰，证实了在单宁基木质胶粘剂硬化的较高固化温度，缩聚硬化可与自动缩合同时使单宁硬化。一些共反应剂似乎抑制了单宁的自缩，同时仍然对该反应对最终交联网络形成的贡献很小。相反，其他共反应物似乎通过两种缩合机理之间的正弦反应增强了最终网络的形成，而其他共反应物则未显示这两种反应类型之间的任何干扰。 （C）1998 John Wiley＆Sons，Inc. [参考：34]

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