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تولید و بررسی ویژگی‌های نانوکریستالهای سلولز حاصل از لینتر پنبه و استفاده از آن به عنوان عامل تقویت کننده در فیلم‌های نانوکامپوزیتی پلی‌کاپرولاکتون | ||
| تحقیقات علوم چوب و کاغذ ایران | ||
| مقاله 7، دوره 38، شماره 3 - شماره پیاپی 84، مهر 1402، صفحه 225-236 اصل مقاله (1.23 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijwpr.2023.360955.1741 | ||
| نویسندگان | ||
| بردیا صدیفی1؛ سید حسن شریفی* 2؛ نورالدین نظرنژاد3 | ||
| 1دانشجوی مقطع دکتری، رشته صنایع چوب و فراورده‌های سلولزی، گروه مهندسی چوب و کاغذ، دانشکده منابع طبیعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران | ||
| 2استادیار، گروه مهندسی چوب و کاغذ، دانشکده منابع طبیعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران | ||
| 3دانشیار، گروه مهندسی چوب و کاغذ، دانشکده منابع طبیعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران | ||
| چکیده | ||
| توسعه بسته‌بندی فعال و زیست تخریب‌پذیر با پوشش‌دهی زیست پلیمرها روی مواد بسته‌بندی امکان پذیر است. در این پژوهش به منظور بهبود ویژگی‌های مقاومتی و ممانعتی فیلم‌های پلیمری پلی‌کاپرولاکتون، نانوکریستالهای سلولز حاصل از آلفا سلولز لینتر پنبه با مقادیر (3%، 6% و 9%) به محلول کامپوزیتی پلی‌کاپرولاکتون اضافه شدند و خواص ساختاری، مقاومتی و معمانتی آنها مورد بررسی قرار گرفت. طبق نتایج آزمون میکروسکوپ الکترونی روبشی نشر میدانی (FESEM)، نانو ذرات به دست آمده میله‌ای شکل و دارای طولی در محدوده 100 تا 150 نانومتر و قطری در حدود 10 تا 50 نانومتر می‌باشند. آزمون پراش پرتو ایکس (XRD)، تشکیل نانوکریستالهای سلولز را تایید نمود. مطابق نتایج، با افزودن نانوکریستالهای سلولز به محلول کامپوزیتی؛ مقاومت به کشش، مقاومت به حلالیت در آب و نفوذ ناپذیری نسبت به بخار آب فیلم‌ها افزایش یافته و تنها تغییر طول تا نقطه شکست آنها کاهش یافت و بهترین خواص مقاومتی و ممانعتی نانوکامپوزیت‌های تولید شده در حضور ۶% نانوکریستالهای سلولز به دست آمد. | ||
| کلیدواژه‌ها | ||
| پلی‌کاپرولاکتون؛ پلیمر زیست تخریب‌پذیر؛ فیلم نانوکامپوزیتی؛ نانوکریستالهای سلولز | ||
| عنوان مقاله [English] | ||
| Production and investigation of cellulose nanocrystals properties obtained from cotton linter and their use as a reinforcing agent in polycaprolactone nanocomposite films | ||
| نویسندگان [English] | ||
| Bardia Sodeifi1؛ Seyed Hassan Sharifi2؛ Noredin Nazarnezhad3 | ||
| 1Ph.D. Student in wood industry and cellulose products, Wood and Paper Science Department, Faculty of Natural Resources, Sari Agricultural Sciences and Natural Resource University Sari, Iran | ||
| 2Assistant Prof., Wood and Paper Science Department, Faculty of Natural Resources, Sari Agricultural Sciences and Natural Resource University Sari, Iran | ||
| 3Associate Prof., Wood and Paper Science Department, Faculty of Natural Resources, Sari Agricultural Sciences and Natural Resource University Sari, Iran | ||
| چکیده [English] | ||
| Development of active and biodegradable packaging is possible by coating biopolymers on packaging materials. In this research, in order to improve the mechanical and barrier properties of polycaprolactone polymer films, cellulose nanocrystals obtained from alpha-cellulose of cotton linter were added to the poly caprolactone composite solution with amounts of (3%, 6%, and 9%), and their structural, mechanical, and barrier properties were investigated. According to the results of the field emission scanning electron microscopy (FESEM) test, the obtained nanoparticles are rod-shaped and have a length in the range of 100 to 150 nm and a diameter of 10 to 50 nm. X-ray diffraction (XRD) confirmed the formation of cellulose nanocrystals. According to the results, by adding cellulose nanocrystals to the composite solution, tensile strength, resistance to water solubility, and impermeability to the water vapor of the films increased, and only the elongation at break reduced. The best mechanical and barrier properties of the nanocomposites were obtained in the presence of 6% cellulose nanocrystals. | ||
| کلیدواژه‌ها [English] | ||
| Biodegradable polymer, Cellulose nanocrystals, Nanocomposite film, Polycaprolactone | ||
| مراجع | ||
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