زبری نانومتری بر سطح الیاف پلی‌استر با عمل‌آوری فرابنفش-ازن

نوع مقاله : پژوهشی

نویسندگان

دانشگاه صنعتی اصفهان، دانشکده مهندسی نساجی، کد پستی 8311-84156

چکیده

فرضیه: در سال‌های اخیر روش‌های جدیدی مانند پلاسما، پرتودهی فرابنفش و عمل‌آوری با ازن برای اصلاح سطح پلیمرها به‌کار گرفته شده است. اصلاح سطح الیاف پلیمری برای بهبود قابلیت رنگرزی و ایجاد خواص فیزیکی مطلوب مانند جذب رطوبت زیاد و الکتریسیته ساکن کم انجام می‌شود. در این مطالعه، برای اصلاح خواص سطحی الیاف پلی‌استر و اکسایش سطحی آن‌ها، روش ترکیبی جدیدی از راه عمل‌آوری با فرابنفش-ازن با دو شیوه خشک و تر به‌کار گرفته شده است.
روش‌ها: برای اصلاح سطح الیاف پلی‌استر، عمل‌آوری با فرابنفش-ازن روی نمونه‌های خشک و نیز پیش‌آغشته‌سازی نمونه‌ها با آب و محلول‌های هیدروژن پراکسید و هیدروژن پراکسید-سدیم سیلیکات انجام شد. به‌منظور بررسی گروه‌های عاملی و شکل‌شناسی نمونه‌ها و مقایسه آن‌ها با نمونه شاهد به‌ترتیب از طیف‌نمایی زیرقرمز تبدیل فوریه (FTIR) و میکروسکوپی الکترون پویشی (SEM) استفاده شد. همچنین، جذب رطوبت و مقدار الکتریسیته ساکن نمونه‌ها بررسی شد.
یافته‌ها: نتایج طیف‌های FTIR حاکی از افزایش شایان توجه گروه‌های عاملی اکسیژن‌دار مانند هیدروکسیل و کربونیل در نمونه‌ها در اثر عمل‌آوری با فرابنفش-ازن بود. عکس‌های SEM نشان داد، زبری نانومتری روی سطح نمونه‌های عمل‌آوری‌شده ایجاد شده است. همچنین نتایج نشان داد، جذب رطوبت نمونه‌های عمل‌آوری‌شده افزایش و در پی آن مقدار الکتریسیته ساکن کاهش یافته است. طبق نتایج، پیش‌آغشته‌سازی الیاف پلی‌استر اثر زیادی بر فرایند اکسایش سطحی دارد.  

کلیدواژه‌ها


عنوان مقاله [English]

Nanoscale Roughness on the Surface of Polyester Fibers Through Ultraviolet/Ozone Treatment

نویسندگان [English]

  • Fattahi Farnaz Sadat
  • Akbar Khoddami
  • Jalal Rahmatinejad
Department of Textile Engineering, Isfahan University of Technology, Isfahan, 84156-8311, Iran
چکیده [English]

Hypothesis: In recent years, some modern techniques such as plasma, ultraviolet irradiation and ozone treatment have been used in surface modification of polymers. Surface modification of polymeric fibers is aimed to improve dying and to achieve desirable physical properties like high moisture absorption and lower anti-static. In this study in an attempt to modify the surface of polyester fibers, a new complex method through ultraviolet/ozone treatment in two wet and dry forms has been applied.
Methods: Surface modification of polyester fibers was performed by ultraviolet/ozone treatment on dry samples, as well as on samples impregnated with water, hydrogen peroxide and hydrogen peroxide/sodium silicate solutions. In order to study and compare the functional groups and morphology of the polyester fibers with those of control sample, Fourier-transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) were used. Also, the moisture absorption and static electricity of the samples were studied.
Findings: The results of FTIR spectra revealed that by ultraviolet/ozone treatment the number of oxygen-containing functional groups has increased considerably. Also, nanoscale surface roughness of the treated samples was revealed by SEM images. Additionally, the results indicated that moisture absorption of the treated polyester fibers has risen and consequently their static electricity has decreased. According to the results, the impregnation of polyester fibers can remarkably enhance surface oxidation process.

کلیدواژه‌ها [English]

  • ultraviolet/ozone
  • polyester fibers
  • nanoscale roughness
  • moisture absorption
  • static electricity
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