بررسی ویژگی‌های ممانعتی کاغذهای پوشش دهی و تیمار شده با پلی‌کاپرولاکتون و نانومواد کریستال سلولز و اکسید روی

نویسندگان
بردیا صدیفی 1
نورالدین نظرنژاد 2
حسن شریفی 3
1 دانشجوی گروه مهندسی چوب و کاغذ، دانشکده منابع طبیعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری،
2 دانشیار گروه مهندس چوب و کاغذ دانشکده منابع طبیعی دانشگاه علوم کشاورزی و منابع طبیعی ساری
3 استادیار، گروه مهندسی چوب و کاغذ، دانشکده منابع طبیعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری
10.52547/fsct.17.107.91
چکیده
در این پژوهش تاثیر تیمارهای مختلف نانومواد کریستال سلولز (NCC) و اکسید روی (ZNO) در حین ساخت کاغذ و همچنین پوشش دهی نمونه‌ها با همین نانومواد و پلی‌کاپرولاکتون (PCL) بر روی خواص ممانعتی کاغذها مورد بررسی قرار گرفت. نمونه‌ها بوسیله دستگاه‌های میکروسکوپ الکترونی روبشی نشر میدانی (FESEM) و پراش پرتو ایکس (XRD)، مورد مطالعه قرار گرفتند. در این پژوهش نانومواد و پلیمر با شرایط مشخص (نانوکریستال ‌سلولز 4 و 6 درصد، نانو‌اکسید روی 3 درصد، پلی‌کاپرولاکتون 10 درصد) درحین ساخت کاغذ و به عنوان پوشش به خمیر کاغذ و کاغذهای شاهد افزوده شدند. از پلی‌اکریل آمید کاتیونی بعنوان کمک نگه دارنده نانومواد درحین ساخت کاغذ استفاده شد. نتایج حاصل از آزمایش‌ها نشان داد که ویژگی‌های ممانعتی (جذب آب، عبور هوا، جذب روغن) کاغذهای تیمار شده افزایش یافته است ولی تاثیر افزایش درصد نانوکریستال سلولز در این افزایش بارزتر بوده است و کاغذهای تیمار شده با ترکیب همزمان نانومواد بهترین ویژگی‌های ممانعتی را داشته است. همچنین ویژگی‌های ممانعتی کاغذهای پوشش دهی شده با افزودن نانومواد افزایش یافته است که در این بین نقش اصلی در این افزایش را نانوکریستال سلولز داشته است و ترکیب همزمان نانومواد با پلی‌کاپرولاکتون دارای بهترین ویژگی‌ها می‌باشد. همچنین ویژگی‌های ممانعتی کاغذهای پوشش دهی شده به مراتب بالاتر از کاغذهای تیمار شده می‌باشد.
کلیدواژه‌ها
پلی‌کاپرولاکتون
نانوکریستال سلولز
نانواکسید روی
بسته‎بندی
پلیمر زیست تخریب ‌پذیر

موضوعات

عنوان مقاله English

Investigation of barrier properties of the coated and treated papers with polycaprolactone/cellulose nanocrystals/ZnO nanoparticles

نویسندگان English

Bardia Sodifi 1
noureddin nazarnezhad 2
Hasan Sharifi 3
1 - M.S., Student, Wood and Paper Science Department, Faculty of Natural Resources, Sari Agricultural Sciences and Natural Resource University Sari
2 , Assoc. Prof., Wood and Paper Science Department, Faculty of Natural Resources, Sari Agricultural Sciences and Natural Resource University Sari, Iran
3 Assist. Prof., Wood and Paper Science Department, Faculty of Natural Resources, Sari Agricultural Sciences and Natural Resource University Sari,
چکیده English

In this study, the effect of various treatments with cellulose nanocrystals (NCC) and ZnO during papermaking and coating with these nanomaterials and polycaprolactone (PCL) on the barrier properties of the papers was investigated. The samples were studied by Field Emission Scanning Electron Microscope (FESEM) and X-ray diffraction (XRD) devices. In this research, the nanomaterials and the polymer with the specified condition (4%, 6% NCC, 3% ZnO and 10% PCL) were added to the paper pulps during the papermaking and also as a coating agent. Cationic polyacrylamide used as a nanomaterials retention aid in the papermaking process. the results showed the barrier properties (water absorption, air permeability and grease absorption) of the treated papers were improved but the effect of NCC% increment was more clear in the enhancement of the barrier properties and the treated papers with the nanomaterials mixture had the best barrier properties.furthermore the barrier properties of the coated papers were enhanced with the nanomaterials addition and the NCC nanoparticles had the main role, also the mixture of nanomaterials and PCL had the best barrier properties. Also, the barrier properties of the coated papers were higher than the treated papers.

کلیدواژه‌ها English

Polycaprolactone
Cellulose nanocrystals
ZnO
packaging
biodegradable polymer
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