CAJ | 학술논문

以二乙醇胺、丙烯酸丁酯、甲苯二异氰酸酯、聚氧化丙烯二醇及对甲酚为原料，合成了对甲酚封闭的聚氨酯预聚物，然后与不同用量的1，3?丙磺酸内酯发生反应，获得不同离子化程度的封闭型磺酸甜菜碱内盐聚氨酯，并利用自制含季铵盐基、氨基的固化剂固化，得到磺酸甜菜碱内盐聚氨酯离聚体。测试了材料的亲水性能、拉伸性能和动态力学性能。结果表明，随着1，3?丙磺酸内酯用量的增加，聚氨酯的拉伸强度和吸水率增加，而断裂伸长率和与水的接触角下降。磺酸甜菜碱内盐聚氨酯的形态结构受离子化程度影响较大，随1，3?丙磺酸内酯用量的增加，相分离程度增大。
이이을순알、병희산정지、갑분이이청산지、취양화병희이순급대갑분위원료，합성료대갑분봉폐적취안지예취물，연후여불동용량적1，3?병광산내지발생반응，획득불동리자화정도적봉폐형광산첨채감내염취안지，병이용자제함계안염기、안기적고화제고화，득도광산첨채감내염취안지리취체。측시료재료적친수성능、랍신성능화동태역학성능。결과표명，수착1，3?병광산내지용량적증가，취안지적랍신강도화흡수솔증가，이단렬신장솔화여수적접촉각하강。광산첨채감내염취안지적형태결구수리자화정도영향교대，수1，3?병광산내지용량적증가，상분리정도증대。
With toluene diisocynate, diethanolamine, butyl acrylate and polyoxypropylene glycol as the mono?mers and p?cresol as the blocking agent, the blocked polyurethane prepolymers( BPU) were prepared by multi?step reactions. The polyurethanes containing sulfobetaine zwitterions with different degrees of ionization were prepared by controlling the ratio of BPU and 1,3?propane sultone(1,3?PS), and then cured with the self?made curing agent containing quaternary ammonium salt and amino group. The experimental results showed that the tensile strength and water?absorption ratio of the polyurethanes increased, and elongation and contact angle with water decreased when the amount of 1,3?PS increased. The dynamic mechanical analyses showed that the degree of phase separation between soft and hard segments in the polyurethanes increased with the amount of 1,3?PS increasing.