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ABSTRACT: Recently, a novel, effective, and commercially viable antimicrobial treatment for wool was reported that used a peroxymonosulfate/sulfite
pretreatment and the biocide polyhexamethylene biguanide (PHMB). Given the polymeric nature of PHMB used in this antimicrobial
treatment, this study investigated whether the treatment would also lead to shrink resistance of woven wool fabrics. It was
shown that up to 5% PHMB (on mass of fabric) could be exhausted onto the pretreated wool at 40°C. Under scanning electron
microscope, PHMB was observed to coat the wool surface with no obvious interfiber bonding. PHMB finishing was durable to laundering,
had little effect on the tensile strength of the fabrics and only slightly increased the bending rigidity. The finishing conferred
strong antimicrobial activity to the fabrics and at the same time reduced felting shrinkage after laundering to an acceptable
level. Thus, a single finishing process achieved two important functionalities for wool fabrics, antimicrobial activity and
shrink resistance.
Journal of Materials Science 05/2012; 46(9):3020-3026. · 2.02 Impact Factor
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ABSTRACT: This work successfully prepared nanohybrids by in situ atom transfer radical polymerization (ATRP) of styrene from titanate nanotubes (TNTs). Fourier-transform infrared (FT-IR),
pronton nuclear magnetic resonance spectroscopy (1H NMR), and thermal gravimetric analysis (TGA) were used to verify the successful graft of polystyrene (PS) chains from TNTs.
Transmission electron microscopy (TEM) displayed that the obtained PS-g-TNTs nanohybrids had a core-shell structure of TNT core and PS shell. The grafted PS content was well controlled and increased
with increasing of the monomer/initiator ratio. Further copolymerization of tert-butyl acrylate (tBA) from the surface of PS-g-TNTs was studied, illustrating the “living” characteristics of the surface-induced ATRP method used in this work.
Science in China Series B Chemistry 04/2012; 52(3):344-350. · 1.20 Impact Factor
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ABSTRACT: As inspired from nature's strategy to prepare collagen, herein we report a hierarchical solution self-assembly method to prepare multi-dimensional and multi-scale supra-structures from the building blocks of pristine titanate nanotubes (TNTs) around 10 nm. With the help of amylose, the nanotubes was continuously self-assembled into helically wrapped TNTs, highly aligned fibres, large bundles, 2D crystal facets and 3D core-shell hybrid crystals. The amyloses work as the glue molecules to drive and direct the hierarchical self-assembly process extending from microscopic to macroscopic scale. The whole self-assembly process as well as the self-assembly structures were carefully characterized by the combination methods of (1)H NMR, CD, Hr-SEM, AFM, Hr-TEM, SAED pattern and EDX measurements. A hierarchical self-assembly mechanism was also proposed.
Nanoscale 11/2011; 4(1):224-30. · 5.91 Impact Factor
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ABSTRACT: Antimicrobial treatments of textiles have received substantial attention in recent years, both in academic research and in commercial productions. Such treatments prevent the odor formation and fabric deterioration that arise from the growth of microbes on the textiles during their use or storage. So far, antimicrobial treatments have mainly focused on cotton and synthetic fibers, and a viable treatment for wool is lacking. In this report, we demonstrate a novel and effective antimicrobial finishing for wool. We found that pretreatment with peroxymonosulfate and sulfite, a treatment previously developed for shrink resistance, uniquely enabled wool to exhaust up to 5% (on the weight of the fabric) of the biocide polyhexamethylene biguanide (PHMB) under mild conditions. In contrast, untreated or chlorinated wool had little affinity for this biocide. The exhaustion was facilitated by higher temperatures but was not affected by pH over a broad range. Wool fabrics finished with PHMB exhibited strong antimicrobial abilities that could deactivate the bacterium Escherichiacoli within a few minutes of contact. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010
Journal of Applied Polymer Science 04/2010; 117(5):3075 - 3082. · 1.29 Impact Factor
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ABSTRACT: Part 1 of this study reported an effective antimicrobial treatment for wool, using a pretreatment of peroxymonosulfate and sulfite to facilitate the exhaustion of polyhexamethylene biguanide (PHMB), a biocide with a long history of safe use. Here, further studies were performed to examine whether this finishing would satisfy the requirements for commercial antimicrobial textile production in terms of washing durability, its compatibility with dyeing and its effects on textile physical properties. The finishing was found to be very durable, sustaining at least 25 washing cycles without significant reduction in the antimicrobial activity. The process was compatible with reactive dyes, although other types of dyes (acid dyes, chrome dyes, and Premetalized dyes) all reduced PHMB uptake by ∼ 50%. The finishing had little adverse effect on the tensile strength, handle or whiteness of the fabrics. This process therefore meets the requirements of and holds promise for the commercial production of antimicrobial wool textiles. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010
Journal of Applied Polymer Science 04/2010; 117(5):2882 - 2887. · 1.29 Impact Factor
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Chunlai Tu,
Guolin Li,
Yunfeng Shi,
Xin Yu,
Yi Jiang,
Qi Zhu,
Jiamiao Liang, Yuan Gao,
Deyue Yan,
Jian Sun,
Xinyuan Zhu
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ABSTRACT: A facile controlled synthesis method of gold nanoparticles (AuNPs) under mild conditions has been developed by combining the stabilization ability of amphiphilic thiacalixarene and the reduction ability of phenolic moieties together, and the particle sizes of AuNPs can be readily controlled by only adjusting the feeding ratio of Au/S.
Chemical Communications 07/2009; · 6.17 Impact Factor
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ABSTRACT: This paper reports the successful preparation of core-shell hybrid nanocomposites by a 'grafting from' approach based on in situ atom transfer radical polymerization (ATRP) of methyl methacrylate (MMA) from titanate nanotubes (TNTs). Transmission electron microscope (TEM) images of the products provide direct evidence for the formation of a core-shell structure, possessing a hard core of TNTs and a soft shell of poly-MMA (PMMA). Fourier-transform infrared spectroscopy (FT-IR), hydrogen nuclear magnetic resonance ((1)H NMR), scanning electron microscopy (SEM), and thermal gravimetric analysis (TGA) were used to determine the chemical structure, morphology, and the grafted PMMA quantities of the resulting products. The grafted PMMA content was well controlled and increased with increasing monomer/initiator ratio. Further copolymerization of hydroxyethyl methacrylate (HEMA) with PMMA-coated TNTs as initiators was realized, illustrating the 'living' characteristics of the ATRP method used in this paper.
Nanotechnology 12/2008; 19(49):495604. · 3.98 Impact Factor
