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Abstract
In this work, 2-bromoisobutyryl bromide was first reacted with the hydroxyl groups on the surface of cotton fabric to obtain cotton macroinitiator (C-Br) for surface-initiated atom transfer radical polymerization (ATRP) of (2-dimethylamino) ethyl methacrylate (DMAEMA). Then C-Br was grafted with DMAEMA via the ATRP method in water aqueous. The tertiary amino groups of immobilized DMAEMA polymer on the cotton fabric were quaternized with bromomethane to produce the antibacterial function. The structure of cotton-grafted-PDMAEMA (C-g-PDMAEMA) was characterized by attenuated total reflection-Fourier transform infrared spectroscopy, scanning electron microcopy, X-ray diffraction, and X-ray photoelectron spectroscopy. The results show that DMAEMA was grafted onto the surface of cotton and the tertiary amino groups were quaternized. The C-g-PDMAEMA has good thermostability. The whiteness and strength of C-g-PDMAEMA decreased slightly, but the wrinkle recovery angle increased distinctly compared with the control sample. The quaternized grafted cotton has the great antibacterial property and good laundry resistance.
Keywords
surface modification, finishing, structure properties, atom transfer radical polymerization, cotton fabric
(ProQuest: ... denotes formulae omitted.)
Cotton is the most abundant polymeric raw material in the world. This inexpensive, biodegradable, and renewable resource has been widely studied during the past decades. Cotton fabric has many useful properties, but for some applications, it lacks advantages of synthetic fabrics, such as the wrinkle recovery property and chemical stability. Modification of cotton fabric by graftpolymerization provides a significant route to alter the physical and chemical properties, including heat resistance, elasticity, resistance to abrasion and wear, oil and water repellency, ion-exchange capabilities, and antibacterial activity.1-3
Grafted copolymerization of cotton fabric using various conventional techniques has been studied quite extensively. Conventional grafting of cotton fabric has usually been conducted by a ''graftingfrom'' technique, where radicals are generated along the cellulose backbone, followed by chemical means or by irradiation.4-7 Using this method, it is almost impossible to predetermine the molecular weight of the polymer and the molecular weight distributions are very broad. If, instead, the cotton fabric is grafted via a living/controlled polymerization technique, the properties of the grafts can be accurately controlled and thereby also tailored.8,9 Atom transfer radical polymerization (ATRP) is one of the most broadly applied methods of living/controlled polymerization technique because it has an easy experimental setup, is readily accessible, and has inexpensive catalysts and...