Ghamarpoor Reza, Jamshidi Masoud, Sayyadian Mohammad, Razavizadeh Mahmoud
Constructional Polymers and Composites Research Lab, School of Chemical, Petroleum and Gas Engineering, Iran University of Science and Technology (IUST), Tehran, Iran.
Department of Polymer Engineering, Faculty of Materials and Manufacturing, Malek Ashtar University of Technology, Tehran, Iran.
Sci Rep. 2023 Sep 4;13(1):14533. doi: 10.1038/s41598-023-41432-7.
The aim of this work is to compare the effects of chemical and photochemical functionalization on the mechanical properties of PET fabric and its adhesion to nitrile rubber (NBR). The photochemical functionalization was performed by UV irradiation of PET fabric in the presence of glutaric acid peroxide at a temperature of 60 °C for different exposure times (i.e. 60, 90 and 120 min). The chemical functionalization (i.e. hydrolysis) of PET fabrics was performed by NaOH solution at a temperature of 60 °C for different times (i.e. 60, 120, 240 and 360 min). The tensile properties of the functionalized fibers were also evaluated. The functionalized PETs were evaluated for H-pull and T-peel adhesion to NBR. It was found that both treatment methods created functional groups on the PET surface. However, carboxylation of PET under GAP/UV irradiation generated much more OH groups on the PET surface (i.e. 4.5 times). The hydrolysis of PET in NaOH solution for more than 60 min caused a significant decrement in the tensile strength contrary to carboxylation under GAP/UV irradiation. It was also found that pullout and T-peel adhesions to NBR decreased in the case of hydrolysis of PET while they increased about 33 and 12% for GAP/UV irradiated PET, respectively.
这项工作的目的是比较化学功能化和光化学功能化对聚酯（PET）织物机械性能及其与丁腈橡胶（NBR）附着力的影响。光化学功能化是在60°C的温度下，于过氧化戊二酸存在的情况下，对PET织物进行不同照射时间（即60、90和120分钟）的紫外线照射来实现的。PET织物的化学功能化（即水解）是在60°C的温度下，用氢氧化钠溶液处理不同时间（即60、120、240和360分钟）来进行的。还评估了功能化纤维的拉伸性能。对功能化的PET进行了与NBR的H型剥离和T型剥离附着力评估。结果发现，两种处理方法都在PET表面产生了官能团。然而，在GAP/紫外线照射下PET的羧基化在PET表面产生了更多的羟基（即4.5倍）。与GAP/紫外线照射下的羧基化相反，PET在氢氧化钠溶液中水解超过60分钟会导致拉伸强度显著下降。还发现，PET水解时与NBR的拔出和T型剥离附着力下降，而对于GAP/紫外线照射的PET，它们分别增加了约33%和12%。
