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- 저자 : Xinghuan Lin (검색결과 2 건)
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Xinghuan Lin,Maoli Yin,Ying Liu,Lin Li,Xuehong Ren,Yuyu Sun,Tung-Shi Huang 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.63 No.-
Fibrous membranes based on polyhydroxybutyrate/poly-ε-caprolactone (PHB/PCL) blends were obtained by electrospinning. Composite nanoparticles produced from N-halamine precursors and silane precursors were used to modify silica hydrosol which were obtained by the condensation of tetraethylorthosilicate followed the Stöber method. The produced composite nanoparticles were characterized by TEM and FT-IR. The dip-pad process was used to coat the synthesized silica composite nanoparticles onto the fibrous membrane. The coated PHB/PCL fibrous membranes were characterized by SEM, FT-IR and TGA. After chlorination, the chlorinated fibrous membranes showed excellent hydrophobicity with water contact angle of 151° ± 1° and exhibited effective antimicrobial activity against Escherichia coli O157:H7 and Staphylococcus aureus with 99.95% and 99.91% bacterial reduction within 60 min of contact time, respectively. The coated membranes showed good stability and durability toward UVA light exposure and storage. The cell biocompatibility test indicated that the membranes have no cytotoxicity. Therefore, the designed antibacterial fibrous membranes with super hydrophobicity may have great potential for use in food packaging and biomedical materials.
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Shanshan Li,Fang Ding,Xinghuan Lin,Zhiguang Li,Xuehong Ren 한국섬유공학회 2019 Fibers and polymers Vol.20 No.3
In this study, a novel organic-inorganic hybrid intumescent flame-retardant composed of nanosilica (SiO2) coveredwith polyethyleneimine (PEI) and phytic acid (PA) was coated on cotton fabrics by layer-by-layer (LbL) self-assembly toimprove flame retardancy of cotton fabrics. FT-IR, SEM and EDX were used to characterize the deposition of SiO2-PEI/PA on the surface of cotton fabrics. The LbL assembly process had a minor effect on the tensile strength of cotton fabrics. With the synergistic effect of phosphorus, nitrogen and silicon, the coated cotton fabrics with only 7 bilayers exhibited excellent flame retardancy with an LOI value of 33.7 % and a char length of 7.5 cm. TG analysis results showed that cotton/(SiO2-PEI/PA)7 had 40.7 % char residue at 600 oC, compared with 8 % char residue of uncoated cotton fabrics. Cone calorimetry test confirmed that cotton/(SiO2-PEI/PA)7 displayed a major reduction in peak of heat release rate (pHRR) of 75 % and total heat release (THR) of 52 %.
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