CAJ | 학술논문

以脂肪胺聚氧乙烯醚（PAE）替换部分聚己二酸新戊二醇酯（POL7112）为软段，甲苯-2,4-二异氰酸酯（TDI）为硬段，合成了系列侧链含长链烷基与主链嵌入聚醚结构（EO）的阳离子聚氨酯乳液。通过红外（FTIR）、粒径、力学性能、热重分析（TGA）、吸水率及接触角等测试对乳液及胶膜进行分析。研究发现，在PU大分子中引入PAE，热稳定性明显提高；当PAE烷基碳链增长，断裂伸长率显著增大，拉伸强度有所减小；随着PAE用量的增加及其分子中EO加合度的增大，乳液粒径变小，稳定性增强，胶膜的亲水性显著提高。
이지방알취양을희미（PAE）체환부분취기이산신무이순지（POL7112）위연단，갑분-2,4-이이청산지（TDI）위경단，합성료계렬측련함장련완기여주련감입취미결구（EO）적양리자취안지유액。통과홍외（FTIR）、립경、역학성능、열중분석（TGA）、흡수솔급접촉각등측시대유액급효막진행분석。연구발현，재PU대분자중인입PAE，열은정성명현제고；당PAE완기탄련증장，단렬신장솔현저증대，랍신강도유소감소；수착PAE용량적증가급기분자중EO가합도적증대，유액립경변소，은정성증강，효막적친수성현저제고。
A series of PAE-based cationic waterborne polyurethane with long side chain alkyl group and the structure of polyether (EO) embedded in main chain were designed and synthesized based on poly(neopentylglycol adipate) (POL7112) , PAE and TDI. The properties of emulsion and film were measured by infrared spectroscopy (FTIR) , laser-particle size analyzer,tensile mechanical analyzer, thermogravimetry analyses (TGA) and contact angle analysis. Improved thermal stability of WPU-PAE could be attributed to the incorporation of PAE in PU. With increasing alkyl carbon chain of PAE, elongation at break of film increased remarkably while tensile strength reduced. Emulsion particle size decreased,emulsion stability was enhanced,hydrophilicity of film was improved remarkably with increasing quantity of EO and dosage in PEA.