Puszka Andrzej, Sikora Janusz W
Department of Polymer Chemistry, Faculty of Chemistry, Institute of Chemical Sciences, Maria Curie-Skłodowska University in Lublin, Gliniana 33, 20-614 Lublin, Poland.
Department of Technology and Polymer Processing, Faculty of Mechanical Engineering, Lublin University of Technology, Nadbystrzycka 36, 20-618 Lublin, Poland.
Materials (Basel). 2022 Jul 15;15(14):4940. doi: 10.3390/ma15144940.
New segmented poly(thiourethane-urethane)s (SPTURs) were synthesized by the reaction of 1,1'-methanediylbis (4-isocyanatocyclohexane) (, HMDI) and poly(ε-caprolactone)diol (PCL) and (methanediyldibenzene-4,1-diyl)dimethanethiol as nonconventional polymer chain extender. FTIR spectroscopy was used for the structural analysis of obtained polymers. The molecular weight distribution was examined by GPC chromatography. Based on the measured contact angles, free surface energy parameters were calculated. Thermal properties of polymers were examined by DSC and TGA, while viscoelastic properties were measured by DMTA. The tensile, adhesive and optical properties were also investigated for the obtained polymers. It was shown that SPTURs were transparent or partially transparent solids with high molar masses up to 84,300 Da. These polymers showed a good resistance to hydrolysis during incubation in Optylite physiological saline over 8 weeks. Obtained polymers possessed a tensile strength of up to 43.26 MPa, hardness of up to 96.25/59.00 Sh A/D and adhesion to copper of 14.66 MPa. The surface properties of the obtained polymers show that all obtained SPTURs were hydrophilic (CAs for water between 64.07° and 73.12°) with calculated SFE up to 46.69 mN/m.
通过1,1'-亚甲基双(4-异氰酸根合环己烷)(HMDI)、聚(ε-己内酯)二醇(PCL)与(亚甲基二苯-4,1-二基)二甲硫醇作为非常规聚合物扩链剂反应，合成了新型嵌段聚(硫脲-脲)(SPTURs)。采用傅里叶变换红外光谱(FTIR)对所得聚合物进行结构分析。通过凝胶渗透色谱(GPC)测定分子量分布。根据测得的接触角计算自由表面能参数。通过差示扫描量热法(DSC)和热重分析法(TGA)研究聚合物的热性能，同时通过动态热机械分析(DMTA)测量粘弹性性能。还对所得聚合物的拉伸、粘附和光学性能进行了研究。结果表明，SPTURs是透明或部分透明的固体，摩尔质量高达84,300 Da。在Optylite生理盐水中孵育8周以上时，这些聚合物表现出良好的耐水解性。所得聚合物的拉伸强度高达43.26 MPa，硬度高达96.25/59.00邵氏A/D，与铜的粘附力为14.66 MPa。所得聚合物的表面性能表明，所有所得SPTURs均为亲水性(水接触角在64.07°至73.12°之间)，计算得到的表面自由能高达46.69 mN/m。
