Abstract
In order to realize the immobilization of collagen, chitosan and sericin on the surface of polypropylene fabric, the fabric is treated by ammonia and nitrogen low temperature plasma to produce reactive groups, and then the epoxy compounds (ethylene glycol diglycidyl ether, trimethylolpropane triglycidyl ether) are used as crosslinkers for a bridging process. Single factor experiment is carried out to investigate the influence of crosslinking parameters (temperature, time and the dosage of crosslinker) on immobilization yield. Chemical composition changes on the surface of the treated samples is analyzed by infrared spectroscopy, which indicated that the ammonia plasma treatment can produce more active groups. The results showed that immobilization rate of samples crosslinked by ethylene glycol diglycidyl ether is superior to that of trimethylolpropane triglycidyl ether. It also can be found that the fabric had a better wettability and antimicrobial properties. The whiteness and comfort property of chitosan-polypropylene fabric decreased slightly.
Highlights
Compared with other synthetic fibers, polypropylene (PP) fiber has unique competitiveness due to its convenient spinning technology, rich raw materials, low processing cost, and excellent properties including light texture, strong strength, good chemical corrosion resistance as well as high temperature resistance.[1]. These characteristics make PP fiber used in many fields, such as carpets for interior decoration, workwear for clothing, blended fabrics, non-woven fabrics, and medical care dressing.[2]
In case some functional agents linked to PP fabric, the practicabllity of fiber will advance extremely
Regardless of the atmosphere of NH3 or N2, two new peaks of 3400 cm−1 and 1640 cm−1 can be seen from the spectra of plasma-treated PP, which can be attributed to the stretch vibration and bend vibration of -NH2. This indicated that -NH2 is introduced into the surface of PP after N2 and NH3 plasma modification
Summary
Compared with other synthetic fibers, polypropylene (PP) fiber has unique competitiveness due to its convenient spinning technology, rich raw materials, low processing cost, and excellent properties including light texture, strong strength, good chemical corrosion resistance as well as high temperature resistance.[1]. In case some functional agents linked to PP fabric, the practicabllity of fiber will advance extremely. Owing to the inert nature of commercial PP fiber, it’s of great significance to modify it to obtain the desired reactive functional groups prior to attachment of a functional agent.[3]. Several surface modification techniques such as wet chemical,[4,5,6] ozone,[7,8] plasma,[9,10,11,12] and surface grafting[13,14,15,16] have been developed to introduce polar groups on PP surface. When surface modification is a precursor to attaching a functional agent, these techniques must be tailored to introduce a specific functional group.
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