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首页> 外文期刊>Journal of Applied Polymer Science >Synthesis and molecular interaction of tung oil-based anionic waterborne polyurethane dispersion
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Synthesis and molecular interaction of tung oil-based anionic waterborne polyurethane dispersion

机译：桐油基阴离子水性聚氨酯分散体的合成与分子相互作用

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In the present work, four types of anionic waterborne polyurethane dispersions (APUD) based on polytetramethylene ether glycol (PTMG) and two aliphatic diisocyanates, dicyclohexylmethane diisocyanate (HMDI) or isophorone diisocyanate (IPDI), were prepared by polymerization methods which for the first time controlled the location (soft or hard segment) of hydroxylated tung oil (HTO) incorporation into the final APUD. The resulting HTO-containing APUD polymers (HTO-APUDs) with postpolymerization crosslinking capability were characterized using FTIR, DMA, AFM and water imbibition methods, and compared to model compounds synthesized to have the same parts of chemical structural linkages for band assignment. A common PUD sample, as well as polypropylene oxide (PPG) with molecular weight similar to HTO (Mn = 400), was used to replace it for preparing control samples to highlight the role of long branched chains and conjugated double bonds in HTO. Based on the analysis of multiple H-bond interactions, the relationship of HTO location in the APUD polymer structure to the soft/hard segment compatibility and the diisocyanate structure was further studied. This work is expected to provide basic data for properties regulation in practical applications by adjusting the chain and phase structure, as well as the intermolecular interactions, in these APUDs.
机译：在本作研究中，通过聚合方法制备，基于聚甲基醚二醇（PTMG）和两种脂族二异氰酸酯，二氯己基甲烷二异氰酸酯（HMDI）或异佛酮二异氰酸酯（IPDI）的四种阴离子水性聚氨酯分散体（APUD）。将羟基化汤油（HTO）掺入最终APOD的位置（软或硬链段）。使用FTIR，DMA，AFM和水性吸收方法表征了具有后共聚交联能力的含HTO的贫聚合物（HTO-APODS），并与合成的模型化合物进行比较，以具有与频带分配的相同部分的化学结构联系。使用与HTO（Mn = 400）类似的常见的PUD样品以及具有分子量的聚环氧丙烷（PPG），以替代其制备对照样品以突出HTO中长支链和共轭双键的作用。基于多种H键相互作用的分析，进一步研究了APUD聚合物结构中HTO位置与软/硬链段相容性和二异氰酸酯结构的关系。预计这项工作将通过调整链和相结构以及这些APOD的分子间相互作用，为实际应用提供实际应用中的性质规定的基本数据。

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