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Jinmei He,Yi Zhang,Yichen Zhou,Jiaxin Wang,Yu Zhao,Lili Ma,Ansar Abbas,Mengnan Qu 한국섬유공학회 2019 Fibers and polymers Vol.20 No.5
In recent years, the superhydrophobic fabrics with specific wetting property had attracted extensive attention of theresearcher and industry for their extraordinary performance. In this report, a robust superhydrophobic fabric with oil/waterseparation property and load carrying capacity had been successfully prepared by introducing the modified magnesium oxide(MgO) and aluminate. It has proved that the modified fabric has excellent stability through tape peeling test, folding test,washing experiment and pH test. In particular, the fabric weight of 200 g could be moved by 22 m on 600 # sandpaperwithout losing superhydrophobic property. Besides, the fabric can separate oil and water from different oil-water mixtureswith a separation efficiency of over 90 %, using superhydrophilic-superoleophobic properties. Otherwise, it is 66.8 N/m2 thatloadable pressure of the fabric in water. The superhydrophobic fabric has tremendously wide applications in the field of oilcontainingwastewater and diving equipment.
Eco-friendly and Durable Antibacterial Cotton Fabrics Prepared with Polysulfopropylbetaine
Li Zhou,Hongbo Wang,Jinmei Du,Jiajia Fu,Wencong Wang 한국섬유공학회 2018 Fibers and polymers Vol.19 No.6
A novel antibacterial agent polysulfopropylbetaine (PSPB) bearing carboxyl groups was synthesized and its application on cotton fabric to provide durable antibacterial property was also presented. The successful synthesis of PSPB and its immobilization onto the cotton fabric surface were verified by a series of tests including FTIR, 1H NMR, XPS and SEM. Viable cell counting method was employed to investigate antibacterial properties of the finished cotton fabrics. It was found that the cotton fabrics treated with PSPB were endowed with desirable antibacterial activity against both gram-negative bacteria Esherichia coli (E.coli, AATCC 6538) and gram-positive bacteria Staphylococcus aureus (S.aureus, AATCC 25922), with the bacterisotatic rates of 99.69 % and 99.95 %, respectively. Notably, the bacterial reduction rates still maintained over 90 % against both bacteria even after 50 consecutive laundering cycles. Moreover, tests concerning the hydrophilicity, air permeability, water vapor transmission, mechanical properties as well as thermal properties were carried out systematically. The experimental results indicated the hydrophilic performance, air permeability and moisture penetrability of the cotton fabrics finished with PSPB were improved greatly in spite of a slight reduction in thermal performance and little obvious influence on mechanical performance. The antibacterial cotton fabric has the potential to be applied in sportswear, underwear, household textiles, medical fields and much more.
Mengnan Qu,Yichen Zhou,Lili Ma,Yi Zhang,Jiaxin Wang,Shanxin Xiong,Lihua Shen,Jinmei He 한국섬유공학회 2021 Fibers and polymers Vol.22 No.3
Stimulus-responsive materials with controllable oil/water separation performance have prodigious potentialapplication. Here, a new thought for low-cost, time-saving, flexible approach has been developed to prepare a pH-responsivematerial with switchable superamphiphobicity and superoleophobicity-superhydrophilicity. The as-prepared material can beeasily applied onto multifarious substrates and presents stable superamphiphobicity. However, when the modified material istreated by alkaline solution, its surface wettability turns superhydrophilicity and superoleophobicity, thus water is allowed topenetrate through the material whereas the oil was blocked on the surface. Moreover, the surface wettability can be recoveredto superamphiphobicity quickly via treating the material with acidic aqueous. Hence, such a controllable water wettabilityand stable oil repellency property endows the as-prepared material with excellent capability to separate water from oil/watermixture. In addition, the pH-responsive materials can maintain switchable wettability after being treated by acid and alkalinumerous cycles. Furthermore, the obtained materials also exhibit excellent recyclable, self-cleaning and flame-resistantperformance, which shows potential applications for smart water-oil separators and fire-shielding protectors.
Xiaogang Zheng,Liping Wang,Yuanliang Zhou,Meiyin Luo,Hongyan Li,Zongyang Bo,Weixin Zheng,Chenggong Chang,Jing Wen,Jinmei Dong 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.126 No.-
Biochar-based composites have been intensively applied in wastewater treatment. To boost theadsorption-photocatalytic capacity of biochar for dyes elimination, S-doped biochar was commodifiedby NiS and MgO (NiS-Mg/S-BC) via the one-pot sulfurization at high temperature. The functional groupsin NiS-Mg/S-BC provided the abundant vacant sites for RhB adsorption and photocatalysis, and the junctioninterface among NiS, MgO, and S-doped biochar was likely to form the channels for the separationand transfer of photo-induced e-/h+ pairs. NiS-Mg/S-BC presented the better adsorption-photocatalyticcapacity of RhB than S-doped biochar, NiS and MgO modified biochar. Langmuir and second-order modelswell described the adsorption behaviors of NiS-Mg/S-BC. The removal efficiency of optimal 2b-NiS-Mg/SBCfor 400 mg/L RhB solution was 96.98% within 120 min, and its adsorption capacity based on secondordermodel was 802.49 mg g1. The photo-corrosion induced to the declined removal efficiency of 2b-NiS-Mg/S-BC to 94.13% after five cycles.