Wang Lili, Zhou Bobo, Du Yuliu, Bai Miao, Xu Xiang, Guan Yong, Liu Xiucai
School of Materials Science and Engineering, Shanghai Key Laboratory of Advanced Polymeric Materials, East China University of Science and Technology, Shanghai 200237, China.
Shanghai Cathay Biotech Inc., Ltd., Shanghai 201144, China.
Polymers (Basel). 2024 Sep 25;16(19):2707. doi: 10.3390/polym16192707.
Bacterial damage has significantly impacted humanity, prompting the control of harmful microorganisms and infectious diseases. In this study, antibacterial bio-based PA56 fibres were prepared with high-speed spinning using ethylene-methyl acrylate-glycidyl methacrylate terpolymer (EMA) as the compatibiliser and polypentamethylene guanidine sulphate (PPGS) as the antibacterial agent. The effects of PPGS content on the properties of PA56 draw-textured yarns (DTYs) were investigated. The compatibility between PPGS and PA greatly improved with EMA incorporation. Compared with PA56 fibres, the elongation at break of the sample containing 2.0 wt% EMA and PPGS increased by 25.93%. The inhibition rates of the fibres with 1.0 wt% PPGS against and reached over 99.99%. Samples were easily coloured with dyes, exhibiting good colour fastness, regardless of the EMA content. However, the antibacterial performances of dyed DTYs decreased to varying degrees. the inhibition rates of samples of 0.5wt% addition of PPGS against were reduced from 99.99% to 28.50% and 25.36% after dyeing with Acid Blue 80 and Dispersible Blue 2BLN, respectively. The EMA-modified fibres exhibited the best antibacterial activity after dyeing with neutral gray 2BL. These findings are expected to promote the wider use of biobased PA56 in practical applications that require antibacterial performance and to guide the dyeing process of antimicrobial fibres.
细菌危害对人类产生了重大影响，促使人们对有害微生物和传染病进行控制。在本研究中，以乙烯-甲基丙烯酸甲酯-甲基丙烯酸缩水甘油酯三元共聚物（EMA）为增容剂、聚戊亚甲基胍硫酸盐（PPGS）为抗菌剂，通过高速纺丝制备了抗菌生物基PA56纤维。研究了PPGS含量对PA56拉伸变形丝（DTY）性能的影响。加入EMA后，PPGS与PA之间的相容性大大提高。与PA56纤维相比，含有2.0 wt% EMA和PPGS的样品的断裂伸长率提高了25.93%。含1.0 wt% PPGS的纤维对大肠杆菌和金黄色葡萄球菌的抑菌率均达到99.99%以上。无论EMA含量如何，样品都易于用染料染色，色牢度良好。然而，染色后的DTY的抗菌性能有不同程度的下降。添加0.5wt% PPGS的样品在用酸性蓝80和分散蓝2BLN染色后，对大肠杆菌的抑菌率分别从99.99%降至28.50%和25.36%。EMA改性纤维在用中性灰2BL染色后表现出最佳的抗菌活性。这些研究结果有望促进生物基PA56在需要抗菌性能的实际应用中的更广泛应用，并指导抗菌纤维的染色工艺。
